Toolchain: Upgrade to GCC 12.1.0

This release brings support for various C++23 constructs like `if
consteval` and multidimensional subscript operators. Vectorization is
now enabled for O2 too, and `-ftrivial-auto-var-init` has been added
which can help us find and prevent security issues coming from
uninitialized variables.

Toolchain/Patches/gcc.patch is now significanly smaller as some unused,
autoconf-generated code has been removed.

2 files changed, 90 insertions, 6301 deletions

diff --git a/Toolchain/Patches/gcc-support-mold-linker.patch b/Toolchain/Patches/gcc-support-mold-linker.patch
deleted file mode 100644
index d4914ec7ae..0000000000
--- a/Toolchain/Patches/gcc-support-mold-linker.patch
+++ /dev/null
@@ -1,129 +0,0 @@
-From 37f6a0c24bb07efb29a2222d984e4d793c165aef Mon Sep 17 00:00:00 2001
-From: Martin Liska <mliska@suse.cz>
-Date: Tue, 21 Dec 2021 17:43:55 +0100
-Subject: [PATCH] Support ld.mold linker.
-
-gcc/ChangeLog:
-
-	* collect2.c (main): Add ld.mold.
-	* common.opt: Add -fuse-ld=mold.
-	* doc/invoke.texi: Document it.
-	* gcc.c (driver_handle_option): Handle -fuse-ld=mold.
-	* opts.c (common_handle_option): Likewise.
----
- gcc/collect2.c      | 10 +++++++---
- gcc/common.opt      |  4 ++++
- gcc/doc/invoke.texi |  4 ++++
- gcc/gcc.c           |  4 ++++
- gcc/opts.c          |  1 +
- 5 files changed, 20 insertions(+), 3 deletions(-)
-
-diff --git a/gcc/collect2.c b/gcc/collect2.c
-index 0c8af2987..6bb5cf9a4 100644
---- a/gcc/collect2.c
-+++ b/gcc/collect2.c
-@@ -785,6 +785,7 @@ main (int argc, char **argv)
-       USE_GOLD_LD,
-       USE_BFD_LD,
-       USE_LLD_LD,
-+      USE_MOLD_LD,
-       USE_LD_MAX
-     } selected_linker = USE_DEFAULT_LD;
-   static const char *const ld_suffixes[USE_LD_MAX] =
-@@ -793,7 +794,8 @@ main (int argc, char **argv)
-       PLUGIN_LD_SUFFIX,
-       "ld.gold",
-       "ld.bfd",
--      "ld.lld"
-+      "ld.lld",
-+      "ld.mold"
-     };
-   static const char *const real_ld_suffix = "real-ld";
-   static const char *const collect_ld_suffix = "collect-ld";
-@@ -970,6 +972,8 @@ main (int argc, char **argv)
- 	  selected_linker = USE_GOLD_LD;
- 	else if (strcmp (argv[i], "-fuse-ld=lld") == 0)
- 	  selected_linker = USE_LLD_LD;
-+	else if (strcmp (argv[i], "-fuse-ld=mold") == 0)
-+	  selected_linker = USE_MOLD_LD;
- 	else if (strncmp (argv[i], "-o", 2) == 0)
- 	  {
- 	    /* Parse the output filename if it's given so that we can make
-@@ -1082,7 +1086,7 @@ main (int argc, char **argv)
-   ld_file_name = 0;
- #ifdef DEFAULT_LINKER
-   if (selected_linker == USE_BFD_LD || selected_linker == USE_GOLD_LD ||
--      selected_linker == USE_LLD_LD)
-+      selected_linker == USE_LLD_LD || selected_linker == USE_MOLD_LD)
-     {
-       char *linker_name;
- # ifdef HOST_EXECUTABLE_SUFFIX
-@@ -1317,7 +1321,7 @@ main (int argc, char **argv)
- 	      else if (!use_collect_ld
- 		       && strncmp (arg, "-fuse-ld=", 9) == 0)
- 		{
--		  /* Do not pass -fuse-ld={bfd|gold|lld} to the linker. */
-+		  /* Do not pass -fuse-ld={bfd|gold|lld|mold} to the linker. */
- 		  ld1--;
- 		  ld2--;
- 		}
-diff --git a/gcc/common.opt b/gcc/common.opt
-index 6fab7c3ca..8617124f9 100644
---- a/gcc/common.opt
-+++ b/gcc/common.opt
-@@ -2967,6 +2967,10 @@ fuse-ld=lld
- Common Driver Negative(fuse-ld=lld)
- Use the lld LLVM linker instead of the default linker.
- 
-+fuse-ld=mold
-+Common Driver Negative(fuse-ld=mold)
-+Use the Modern linker (MOLD) linker instead of the default linker.
-+
- fuse-linker-plugin
- Common Undocumented Var(flag_use_linker_plugin)
- 
-diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
-index 7f13ffb79..31932cf2c 100644
---- a/gcc/doc/invoke.texi
-+++ b/gcc/doc/invoke.texi
-@@ -15601,6 +15601,10 @@ Use the @command{gold} linker instead of the default linker.
- @opindex fuse-ld=lld
- Use the LLVM @command{lld} linker instead of the default linker.
- 
-+@item -fuse-ld=mold
-+@opindex fuse-ld=mold
-+Use the Modern Linker (@command{mold}) instead of the default linker.
-+
- @cindex Libraries
- @item -l@var{library}
- @itemx -l @var{library}
-diff --git a/gcc/gcc.c b/gcc/gcc.c
-index 4d790f9dd..ce6366946 100644
---- a/gcc/gcc.c
-+++ b/gcc/gcc.c
-@@ -4189,6 +4189,10 @@ driver_handle_option (struct gcc_options *opts,
-        use_ld = ".gold";
-        break;
- 
-+    case OPT_fuse_ld_mold:
-+       use_ld = ".mold";
-+       break;
-+
-     case OPT_fcompare_debug_second:
-       compare_debug_second = 1;
-       break;
-diff --git a/gcc/opts.c b/gcc/opts.c
-index 24bb64198..9192ca757 100644
---- a/gcc/opts.c
-+++ b/gcc/opts.c
-@@ -2875,6 +2875,7 @@ common_handle_option (struct gcc_options *opts,
-     case OPT_fuse_ld_bfd:
-     case OPT_fuse_ld_gold:
-     case OPT_fuse_ld_lld:
-+    case OPT_fuse_ld_mold:
-     case OPT_fuse_linker_plugin:
-       /* No-op. Used by the driver and passed to us because it starts with f.*/
-       break;
--- 
-2.34.1
-
diff --git a/Toolchain/Patches/gcc.patch b/Toolchain/Patches/gcc.patch
index bba1c4d4ab..e7dea0504e 100644
--- a/Toolchain/Patches/gcc.patch
+++ b/Toolchain/Patches/gcc.patch
@@ -1,25 +1,3 @@
-diff --git a/config.sub b/config.sub
-index 63c1f1c8b..a82d7fd08 100755
---- a/config.sub
-+++ b/config.sub
-@@ -2,7 +2,7 @@
- # Configuration validation subroutine script.
- #   Copyright 1992-2021 Free Software Foundation, Inc.
- 
--timestamp='2021-01-08'
-+timestamp='2021-04-22'
- 
- # This file is free software; you can redistribute it and/or modify it
- # under the terms of the GNU General Public License as published by
-@@ -1725,7 +1725,7 @@ case $os in
- 	     | skyos* | haiku* | rdos* | toppers* | drops* | es* \
- 	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
- 	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
--	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx*)
-+	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | serenity*)
- 		;;
- 	# This one is extra strict with allowed versions
- 	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
 diff --git a/fixincludes/mkfixinc.sh b/fixincludes/mkfixinc.sh
 index df90720b7..a45cdd0de 100755
 --- a/fixincludes/mkfixinc.sh
@@ -33,10 +11,10 @@ index df90720b7..a45cdd0de 100755
      i?86-*-mingw32* | \
      x86_64-*-mingw32* | \
 diff --git a/gcc/common.opt b/gcc/common.opt
-index a75b44ee4..6fab7c3ca 100644
+index 8a0dafc52..a4f888953 100644
 --- a/gcc/common.opt
 +++ b/gcc/common.opt
-@@ -3490,4 +3490,8 @@ fipa-ra
+@@ -3607,4 +3607,8 @@ fipa-ra
  Common Var(flag_ipa_ra) Optimization
  Use caller save register across calls if possible.
  
@@ -46,10 +24,10 @@ index a75b44ee4..6fab7c3ca 100644
 +
  ; This comment is to ensure we retain the blank line above.
 diff --git a/gcc/config.gcc b/gcc/config.gcc
-index 357b0bed0..8e96b74e5 100644
+index c5064dd37..f8a468c6f 100644
 --- a/gcc/config.gcc
 +++ b/gcc/config.gcc
-@@ -686,6 +686,13 @@ x86_cpus="generic intel"
+@@ -673,6 +673,13 @@ x86_cpus="generic intel"
  
  # Common parts for widely ported systems.
  case ${target} in
@@ -63,7 +41,7 @@ index 357b0bed0..8e96b74e5 100644
  *-*-darwin*)
    tmake_file="t-darwin "
    tm_file="${tm_file} darwin.h"
-@@ -1084,6 +1091,23 @@ case ${target} in
+@@ -1087,6 +1094,19 @@ case ${target} in
  esac
  
  case ${target} in
@@ -75,10 +53,6 @@ index 357b0bed0..8e96b74e5 100644
 +    default_gnu_indirect_function=yes
 +    tm_file="${tm_file} i386/unix.h i386/att.h dbxelf.h elfos.h glibc-stdint.h i386/i386elf.h i386/x86-64.h serenity.h i386/serenity.h"
 +    ;;
-+arm-*-serenity*)
-+    default_gnu_indirect_function=yes
-+    tm_file="dbxelf.h elfos.h arm/elf.h arm/aout.h glibc-stdint.h arm/serenity-elf.h ${tm_file} serenity.h"
-+    ;;
 +aarch64-*-serenity*)
 +    default_gnu_indirect_function=yes
 +    tm_file="${tm_file} dbxelf.h elfos.h aarch64/aarch64-elf.h glibc-stdint.h serenity.h"
@@ -87,80 +61,9 @@ index 357b0bed0..8e96b74e5 100644
  aarch64*-*-elf | aarch64*-*-fuchsia* | aarch64*-*-rtems*)
  	tm_file="${tm_file} dbxelf.h elfos.h newlib-stdint.h"
  	tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-errata.h aarch64/aarch64-elf-raw.h"
-diff --git a/gcc/config/arm/serenity-elf.h b/gcc/config/arm/serenity-elf.h
-new file mode 100644
-index 000000000..24b29c3da
---- /dev/null
-+++ b/gcc/config/arm/serenity-elf.h
-@@ -0,0 +1,65 @@
-+/* Definitions of target machine for GNU compiler, NetBSD/arm ELF version.
-+   Copyright (C) 2002-2018 Free Software Foundation, Inc.
-+   Contributed by Wasabi Systems, Inc.
-+
-+   This file is part of GCC.
-+
-+   GCC is free software; you can redistribute it and/or modify it
-+   under the terms of the GNU General Public License as published
-+   by the Free Software Foundation; either version 3, or (at your
-+   option) any later version.
-+
-+   GCC is distributed in the hope that it will be useful, but WITHOUT
-+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-+   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
-+   License for more details.
-+
-+   Under Section 7 of GPL version 3, you are granted additional
-+   permissions described in the GCC Runtime Library Exception, version
-+   3.1, as published by the Free Software Foundation.
-+
-+   You should have received a copy of the GNU General Public License and
-+   a copy of the GCC Runtime Library Exception along with this program;
-+   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-+   <http://www.gnu.org/licenses/>.  */
-+
-+/* Run-time Target Specification.  */
-+
-+/* arm.h defaults to ARM6 CPU.  */
-+
-+/* This defaults us to little-endian.  */
-+#ifndef TARGET_ENDIAN_DEFAULT
-+#define TARGET_ENDIAN_DEFAULT 0
-+#endif
-+
-+#undef MULTILIB_DEFAULTS
-+
-+/* Default it to use ATPCS with soft-VFP.  */
-+#undef TARGET_DEFAULT
-+#define TARGET_DEFAULT			\
-+  (MASK_APCS_FRAME			\
-+   | TARGET_ENDIAN_DEFAULT)
-+
-+#undef ARM_DEFAULT_ABI
-+#define ARM_DEFAULT_ABI ARM_ABI_ATPCS
-+
-+#undef SUBTARGET_CPP_SPEC
-+#define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT -D_PTHREADS}"
-+
-+#undef SUBTARGET_EXTRA_ASM_SPEC
-+#define SUBTARGET_EXTRA_ASM_SPEC	\
-+  "%{" FPIE_OR_FPIC_SPEC ":-k}"
-+
-+/* Default to full VFP if -mfloat-abi=hard is specified.  */
-+#undef SUBTARGET_ASM_FLOAT_SPEC
-+#define SUBTARGET_ASM_FLOAT_SPEC	\
-+  "%{mfloat-abi=hard:{!mfpu=*:-mfpu=vfp}}"
-+
-+
-+/* Make GCC agree with <machine/ansi.h>.  */
-+
-+#undef SIZE_TYPE
-+#define SIZE_TYPE "long unsigned int"
-+
-+#undef PTRDIFF_TYPE
-+#define PTRDIFF_TYPE "long int"
 diff --git a/gcc/config/i386/serenity.h b/gcc/config/i386/serenity.h
 new file mode 100644
-index 000000000..dc2f5361e
+index 000000000..53a4b8e93
 --- /dev/null
 +++ b/gcc/config/i386/serenity.h
 @@ -0,0 +1,7 @@
@@ -171,21 +74,6 @@ index 000000000..dc2f5361e
 +/* Ensure that ptrdiff_t matches the actual pointer size */
 +#undef PTRDIFF_TYPE
 +#define PTRDIFF_TYPE    (TARGET_64BIT ? "long int" : "int")
-diff --git a/gcc/config/host-darwin.c b/gcc/config/host-darwin.c
-index 14a01fe71..3f8e44288 100644
---- a/gcc/config/host-darwin.c
-+++ b/gcc/config/host-darwin.c
-@@ -22,6 +22,10 @@
- #include "coretypes.h"
- #include "diagnostic-core.h"
- #include "config/host-darwin.h"
-+#include "hosthooks.h"
-+#include "hosthooks-def.h"
-+
-+const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER;
- 
- /* Yes, this is really supposed to work.  */
- /* This allows for a pagesize of 16384, which we have on Darwin20, but should
 diff --git a/gcc/config/serenity.h b/gcc/config/serenity.h
 new file mode 100644
 index 000000000..dc2f5361e
@@ -281,10 +169,10 @@ index 000000000..2756a5575
 +
 +; This comment is to ensure we retain the blank line above.
 diff --git a/gcc/configure b/gcc/configure
-index 9b28369e3..6821ed4ba 100755
+index 5ce055771..2deaac5bc 100755
 --- a/gcc/configure
 +++ b/gcc/configure
-@@ -30992,6 +30992,9 @@ case "$target" in
+@@ -31608,6 +31608,9 @@ case "$target" in
    *-linux-musl*)
      gcc_cv_target_dl_iterate_phdr=yes
      ;;
@@ -295,10 +183,10 @@ index 9b28369e3..6821ed4ba 100755
  
  if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
 diff --git a/libgcc/config.host b/libgcc/config.host
-index 50f000622..fa30ef089 100644
+index 8c56fcae5..f5855cfa6 100644
 --- a/libgcc/config.host
 +++ b/libgcc/config.host
-@@ -1504,6 +1504,30 @@ nvptx-*)
+@@ -1534,6 +1534,22 @@ nvptx-*)
  	tmake_file="$tmake_file nvptx/t-nvptx"
  	extra_parts="crt0.o"
  	;;
@@ -310,14 +198,6 @@ index 50f000622..fa30ef089 100644
 +	extra_parts="$extra_parts crti.o crtbegin.o crtbeginS.o crtend.o crtendS.o crtn.o"
 +	tmake_file="$tmake_file i386/t-crtstuff t-crtstuff-pic t-libgcc-pic t-slibgcc t-eh-dw2-dip"
 +	;;
-+arm-*-serenity*)
-+	tmake_file="${tmake_file} t-fixedpoint-gnu-prefix t-crtfm"
-+	tmake_file="$tmake_file arm/t-arm arm/t-elf t-softfp-sfdf t-softfp-excl arm/t-softfp t-softfp"
-+	tmake_file="${tmake_file} arm/t-bpabi t-eh-dw2-dip"
-+	tm_file="$tm_file arm/bpabi-lib.h"
-+	unwind_header=config/arm/unwind-arm.h
-+	extra_parts="$extra_parts crti.o crtn.o"
-+	;;
 +aarch64-*-serenity*)
 +	extra_parts="$extra_parts crti.o crtbegin.o crtend.o crtn.o"
 +	extra_parts="$extra_parts crtfastmath.o"
@@ -330,7 +210,7 @@ index 50f000622..fa30ef089 100644
  	echo "*** Configuration ${host} not supported" 1>&2
  	exit 1
 diff --git a/libgcc/config/t-slibgcc b/libgcc/config/t-slibgcc
-index c59b43b7b..31c6eb5ad 100644
+index 4efd7b43d..932fa0cfb 100644
 --- a/libgcc/config/t-slibgcc
 +++ b/libgcc/config/t-slibgcc
 @@ -26,7 +26,6 @@ SHLIB_MAP = @shlib_map_file@
@@ -341,17 +221,8 @@ index c59b43b7b..31c6eb5ad 100644
  SHLIB_MAKE_SOLINK = $(LN_S) $(SHLIB_SONAME) $(SHLIB_DIR)/$(SHLIB_SOLINK)
  SHLIB_INSTALL_SOLINK = $(LN_S) $(SHLIB_SONAME) \
  	$(DESTDIR)$(slibdir)$(SHLIB_SLIBDIR_QUAL)/$(SHLIB_SOLINK)
-@@ -34,7 +33,7 @@ SHLIB_INSTALL_SOLINK = $(LN_S) $(SHLIB_SONAME) \
- SHLIB_LINK = $(CC) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
- 	$(SHLIB_LDFLAGS) \
- 	-o $(SHLIB_DIR)/$(SHLIB_SONAME).tmp @multilib_flags@ \
--	$(SHLIB_OBJS) $(SHLIB_LC) && \
-+	$(SHLIB_OBJS) && \
- 	rm -f $(SHLIB_DIR)/$(SHLIB_SOLINK) && \
- 	if [ -f $(SHLIB_DIR)/$(SHLIB_SONAME) ]; then \
- 	  mv -f $(SHLIB_DIR)/$(SHLIB_SONAME) \
 diff --git a/libgcc/unwind-dw2-fde-dip.c b/libgcc/unwind-dw2-fde-dip.c
-index 5095b6830..d19942eee 100644
+index 7f9be5e6b..817c3fe21 100644
 --- a/libgcc/unwind-dw2-fde-dip.c
 +++ b/libgcc/unwind-dw2-fde-dip.c
 @@ -57,6 +57,12 @@
@@ -367,6048 +238,95 @@ index 5095b6830..d19942eee 100644
  #if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
      && defined(TARGET_DL_ITERATE_PHDR) \
      && defined(__linux__)
+diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
+index 138bd58d8..6cd7564b6 100644
+--- a/libstdc++-v3/acinclude.m4
++++ b/libstdc++-v3/acinclude.m4
+@@ -1374,7 +1374,7 @@ AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
+         ac_has_nanosleep=yes
+         ac_has_sched_yield=yes
+         ;;
+-      freebsd*|netbsd*|dragonfly*|rtems*)
++      freebsd*|netbsd*|dragonfly*|rtems*|serenity*)
+         ac_has_clock_monotonic=yes
+         ac_has_clock_realtime=yes
+         ac_has_nanosleep=yes
+@@ -2421,7 +2421,7 @@ AC_DEFUN([GLIBCXX_ENABLE_CLOCALE], [
+       dragonfly* | freebsd*)
+ 	enable_clocale_flag=dragonfly
+ 	;;
+-      openbsd*)
++      openbsd* | serenity*)
+ 	enable_clocale_flag=newlib
+ 	;;
+       *)
 diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
-index 326a279c5..4379c25c8 100755
+index 9b94fd71e..51e45878f 100755
 --- a/libstdc++-v3/configure
 +++ b/libstdc++-v3/configure
-@@ -4219,15 +4219,7 @@ printf ("hello world\n");
- }
- _ACEOF
- # FIXME: Cleanup?
--if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
--  (eval $ac_link) 2>&5
--  ac_status=$?
--  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
--  test $ac_status = 0; }; then :
--  gcc_no_link=no
--else
--  gcc_no_link=yes
--fi
-+gcc_no_link=yes
- if test x$gcc_no_link = xyes; then
-   # Setting cross_compile will disable run tests; it will
-   # also disable AC_CHECK_FILE but that's generally
-@@ -29264,12 +29256,5990 @@ else
- 
-     $as_echo "#define HAVE_ICONV 1" >>confdefs.h
- 
--    $as_echo "#define HAVE_MEMALIGN 1" >>confdefs.h
--
-   else
+@@ -11914,6 +11914,11 @@ else
+     lt_cv_dlopen_libs=
+     ;;
  
- # Base decisions on target environment.
- case "${host}" in
-+
-+  *-serenity*)
-+
-+  # All these tests are for C++; save the language and the compiler flags.
-+  # The CXXFLAGS thing is suspicious, but based on similar bits previously
-+  # found in GLIBCXX_CONFIGURE.
-+
-+  ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-+  ac_save_CXXFLAGS="$CXXFLAGS"
-+
-+  # Check for maintainer-mode bits.
-+  if test x"$USE_MAINTAINER_MODE" = xno; then
-+    WERROR=''
-+  else
-+    WERROR='-Werror'
-+  fi
-+
-+  # Check for -ffunction-sections -fdata-sections
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
-+$as_echo_n "checking for g++ that supports -ffunction-sections -fdata-sections... " >&6; }
-+  CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections'
-+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+int foo; void bar() { };
-+int
-+main ()
-+{
-+
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  ac_fdsections=yes
-+else
-+  ac_fdsections=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+  if test "$ac_test_CXXFLAGS" = set; then
-+    CXXFLAGS="$ac_save_CXXFLAGS"
-+  else
-+    # this is the suspicious part
-+    CXXFLAGS=''
-+  fi
-+  if test x"$ac_fdsections" = x"yes"; then
-+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_fdsections" >&5
-+$as_echo "$ac_fdsections" >&6; }
-+
-+  ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+
-+
-+
-+  # If we're not using GNU ld, then there's no point in even trying these
-+  # tests.  Check for that first.  We should have already tested for gld
-+  # by now (in libtool), but require it now just to be safe...
-+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-+
-+
-+
-+  # The name set by libtool depends on the version of libtool.  Shame on us
-+  # for depending on an impl detail, but c'est la vie.  Older versions used
-+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-+  # set (hence we're using an older libtool), then set it.
-+  if test x${with_gnu_ld+set} != xset; then
-+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-+      with_gnu_ld=no
-+    else
-+      with_gnu_ld=$ac_cv_prog_gnu_ld
-+    fi
-+  fi
-+
-+  # Start by getting the version number.  I think the libtool test already
-+  # does some of this, but throws away the result.
-+  glibcxx_ld_is_gold=no
-+  if test x"$with_gnu_ld" = x"yes"; then
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld version" >&5
-+$as_echo_n "checking for ld version... " >&6; }
-+
-+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-+      glibcxx_ld_is_gold=yes
-+    fi
-+    ldver=`$LD --version 2>/dev/null |
-+	   sed -e 's/GNU gold /GNU ld /;s/GNU ld version /GNU ld /;s/GNU ld ([^)]*) /GNU ld /;s/GNU ld \([0-9.][0-9.]*\).*/\1/; q'`
-+
-+    glibcxx_gnu_ld_version=`echo $ldver | \
-+	   $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_gnu_ld_version" >&5
-+$as_echo "$glibcxx_gnu_ld_version" >&6; }
-+  fi
-+
-+  # Set --gc-sections.
-+  glibcxx_have_gc_sections=no
-+  if test "$glibcxx_ld_is_gold" = "yes"; then
-+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-+      glibcxx_have_gc_sections=yes
-+    fi
-+  else
-+    glibcxx_gcsections_min_ld=21602
-+    if test x"$with_gnu_ld" = x"yes" &&
-+	test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-+      glibcxx_have_gc_sections=yes
-+    fi
-+  fi
-+  if test "$glibcxx_have_gc_sections" = "yes"; then
-+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-+    # NB: This flag only works reliably after 2.16.1. Configure tests
-+    # for this are difficult, so hard wire a value that should work.
-+
-+    ac_test_CFLAGS="${CFLAGS+set}"
-+    ac_save_CFLAGS="$CFLAGS"
-+    CFLAGS='-Wl,--gc-sections'
-+
-+    # Check for -Wl,--gc-sections
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld that supports -Wl,--gc-sections" >&5
-+$as_echo_n "checking for ld that supports -Wl,--gc-sections... " >&6; }
-+    if test x$gcc_no_link = xyes; then
-+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
-+fi
-+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+ int one(void) { return 1; }
-+     int two(void) { return 2; }
-+
-+int
-+main ()
-+{
-+ two();
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_c_try_link "$LINENO"; then :
-+  ac_gcsections=yes
-+else
-+  ac_gcsections=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext \
-+    conftest$ac_exeext conftest.$ac_ext
-+    if test "$ac_gcsections" = "yes"; then
-+      rm -f conftest.c
-+      touch conftest.c
-+      if $CC -c conftest.c; then
-+	if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-+	   grep "Warning: gc-sections option ignored" > /dev/null; then
-+	  ac_gcsections=no
-+	fi
-+      fi
-+      rm -f conftest.c conftest.o conftest
-+    fi
-+    if test "$ac_gcsections" = "yes"; then
-+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-+    fi
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_gcsections" >&5
-+$as_echo "$ac_gcsections" >&6; }
-+
-+    if test "$ac_test_CFLAGS" = set; then
-+      CFLAGS="$ac_save_CFLAGS"
-+    else
-+      # this is the suspicious part
-+      CFLAGS=''
-+    fi
-+  fi
-+
-+  # Set -z,relro.
-+  # Note this is only for shared objects.
-+  ac_ld_relro=no
-+  if test x"$with_gnu_ld" = x"yes"; then
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld that supports -Wl,-z,relro" >&5
-+$as_echo_n "checking for ld that supports -Wl,-z,relro... " >&6; }
-+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-+    if test -n "$cxx_z_relo"; then
-+      OPT_LDFLAGS="-Wl,-z,relro"
-+      ac_ld_relro=yes
-+    fi
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ld_relro" >&5
-+$as_echo "$ac_ld_relro" >&6; }
-+  fi
-+
-+  # Set linker optimization flags.
-+  if test x"$with_gnu_ld" = x"yes"; then
-+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-+  fi
-+
-+
-+
-+
-+
-+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-+  ac_save_CXXFLAGS="$CXXFLAGS"
-+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sin in -lm" >&5
-+$as_echo_n "checking for sin in -lm... " >&6; }
-+if test "${ac_cv_lib_m_sin+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+  ac_check_lib_save_LIBS=$LIBS
-+LIBS="-lm  $LIBS"
-+if test x$gcc_no_link = xyes; then
-+  as_fn_error "Link tests are not allowed after GCC_NO_EXECUTABLES." "$LINENO" 5
-+fi
-+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+
-+/* Override any GCC internal prototype to avoid an error.
-+   Use char because int might match the return type of a GCC
-+   builtin and then its argument prototype would still apply.  */
-+#ifdef __cplusplus
-+extern "C"
-+#endif
-+char sin ();
-+int
-+main ()
-+{
-+return sin ();
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_c_try_link "$LINENO"; then :
-+  ac_cv_lib_m_sin=yes
-+else
-+  ac_cv_lib_m_sin=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext \
-+    conftest$ac_exeext conftest.$ac_ext
-+LIBS=$ac_check_lib_save_LIBS
-+fi
-+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_m_sin" >&5
-+$as_echo "$ac_cv_lib_m_sin" >&6; }
-+if test "x$ac_cv_lib_m_sin" = x""yes; then :
-+  libm="-lm"
-+fi
-+
-+  ac_save_LIBS="$LIBS"
-+  LIBS="$LIBS $libm"
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isinf declaration" >&5
-+$as_echo_n "checking for isinf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_isinf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ isinf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_isinf_use=yes
-+else
-+  glibcxx_cv_func_isinf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_isinf_use" >&5
-+$as_echo "$glibcxx_cv_func_isinf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
-+    for ac_func in isinf
-+do :
-+  ac_fn_c_check_func "$LINENO" "isinf" "ac_cv_func_isinf"
-+if test "x$ac_cv_func_isinf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_ISINF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _isinf declaration" >&5
-+$as_echo_n "checking for _isinf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__isinf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _isinf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__isinf_use=yes
-+else
-+  glibcxx_cv_func__isinf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__isinf_use" >&5
-+$as_echo "$glibcxx_cv_func__isinf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
-+      for ac_func in _isinf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_isinf" "ac_cv_func__isinf"
-+if test "x$ac_cv_func__isinf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__ISINF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isnan declaration" >&5
-+$as_echo_n "checking for isnan declaration... " >&6; }
-+  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
-+    if test "${glibcxx_cv_func_isnan_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ isnan(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_isnan_use=yes
-+else
-+  glibcxx_cv_func_isnan_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_isnan_use" >&5
-+$as_echo "$glibcxx_cv_func_isnan_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
-+    for ac_func in isnan
-+do :
-+  ac_fn_c_check_func "$LINENO" "isnan" "ac_cv_func_isnan"
-+if test "x$ac_cv_func_isnan" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_ISNAN 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _isnan declaration" >&5
-+$as_echo_n "checking for _isnan declaration... " >&6; }
-+  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
-+    if test "${glibcxx_cv_func__isnan_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _isnan(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__isnan_use=yes
-+else
-+  glibcxx_cv_func__isnan_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__isnan_use" >&5
-+$as_echo "$glibcxx_cv_func__isnan_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
-+      for ac_func in _isnan
-+do :
-+  ac_fn_c_check_func "$LINENO" "_isnan" "ac_cv_func__isnan"
-+if test "x$ac_cv_func__isnan" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__ISNAN 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for finite declaration" >&5
-+$as_echo_n "checking for finite declaration... " >&6; }
-+  if test x${glibcxx_cv_func_finite_use+set} != xset; then
-+    if test "${glibcxx_cv_func_finite_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ finite(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_finite_use=yes
-+else
-+  glibcxx_cv_func_finite_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_finite_use" >&5
-+$as_echo "$glibcxx_cv_func_finite_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_finite_use = x"yes"; then
-+    for ac_func in finite
-+do :
-+  ac_fn_c_check_func "$LINENO" "finite" "ac_cv_func_finite"
-+if test "x$ac_cv_func_finite" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FINITE 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _finite declaration" >&5
-+$as_echo_n "checking for _finite declaration... " >&6; }
-+  if test x${glibcxx_cv_func__finite_use+set} != xset; then
-+    if test "${glibcxx_cv_func__finite_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _finite(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__finite_use=yes
-+else
-+  glibcxx_cv_func__finite_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__finite_use" >&5
-+$as_echo "$glibcxx_cv_func__finite_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__finite_use = x"yes"; then
-+      for ac_func in _finite
-+do :
-+  ac_fn_c_check_func "$LINENO" "_finite" "ac_cv_func__finite"
-+if test "x$ac_cv_func__finite" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FINITE 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sincos declaration" >&5
-+$as_echo_n "checking for sincos declaration... " >&6; }
-+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
-+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ sincos(0, 0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_sincos_use=yes
-+else
-+  glibcxx_cv_func_sincos_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_sincos_use" >&5
-+$as_echo "$glibcxx_cv_func_sincos_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
-+    for ac_func in sincos
-+do :
-+  ac_fn_c_check_func "$LINENO" "sincos" "ac_cv_func_sincos"
-+if test "x$ac_cv_func_sincos" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_SINCOS 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _sincos declaration" >&5
-+$as_echo_n "checking for _sincos declaration... " >&6; }
-+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
-+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _sincos(0, 0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__sincos_use=yes
-+else
-+  glibcxx_cv_func__sincos_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__sincos_use" >&5
-+$as_echo "$glibcxx_cv_func__sincos_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
-+      for ac_func in _sincos
-+do :
-+  ac_fn_c_check_func "$LINENO" "_sincos" "ac_cv_func__sincos"
-+if test "x$ac_cv_func__sincos" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__SINCOS 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fpclass declaration" >&5
-+$as_echo_n "checking for fpclass declaration... " >&6; }
-+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
-+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ fpclass(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_fpclass_use=yes
-+else
-+  glibcxx_cv_func_fpclass_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_fpclass_use" >&5
-+$as_echo "$glibcxx_cv_func_fpclass_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
-+    for ac_func in fpclass
-+do :
-+  ac_fn_c_check_func "$LINENO" "fpclass" "ac_cv_func_fpclass"
-+if test "x$ac_cv_func_fpclass" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FPCLASS 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _fpclass declaration" >&5
-+$as_echo_n "checking for _fpclass declaration... " >&6; }
-+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
-+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _fpclass(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__fpclass_use=yes
-+else
-+  glibcxx_cv_func__fpclass_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__fpclass_use" >&5
-+$as_echo "$glibcxx_cv_func__fpclass_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
-+      for ac_func in _fpclass
-+do :
-+  ac_fn_c_check_func "$LINENO" "_fpclass" "ac_cv_func__fpclass"
-+if test "x$ac_cv_func__fpclass" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FPCLASS 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for qfpclass declaration" >&5
-+$as_echo_n "checking for qfpclass declaration... " >&6; }
-+  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
-+    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ qfpclass(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_qfpclass_use=yes
-+else
-+  glibcxx_cv_func_qfpclass_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_qfpclass_use" >&5
-+$as_echo "$glibcxx_cv_func_qfpclass_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
-+    for ac_func in qfpclass
-+do :
-+  ac_fn_c_check_func "$LINENO" "qfpclass" "ac_cv_func_qfpclass"
-+if test "x$ac_cv_func_qfpclass" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_QFPCLASS 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _qfpclass declaration" >&5
-+$as_echo_n "checking for _qfpclass declaration... " >&6; }
-+  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
-+    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _qfpclass(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__qfpclass_use=yes
-+else
-+  glibcxx_cv_func__qfpclass_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__qfpclass_use" >&5
-+$as_echo "$glibcxx_cv_func__qfpclass_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
-+      for ac_func in _qfpclass
-+do :
-+  ac_fn_c_check_func "$LINENO" "_qfpclass" "ac_cv_func__qfpclass"
-+if test "x$ac_cv_func__qfpclass" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__QFPCLASS 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for hypot declaration" >&5
-+$as_echo_n "checking for hypot declaration... " >&6; }
-+  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
-+    if test "${glibcxx_cv_func_hypot_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ hypot(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_hypot_use=yes
-+else
-+  glibcxx_cv_func_hypot_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_hypot_use" >&5
-+$as_echo "$glibcxx_cv_func_hypot_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
-+    for ac_func in hypot
-+do :
-+  ac_fn_c_check_func "$LINENO" "hypot" "ac_cv_func_hypot"
-+if test "x$ac_cv_func_hypot" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_HYPOT 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _hypot declaration" >&5
-+$as_echo_n "checking for _hypot declaration... " >&6; }
-+  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
-+    if test "${glibcxx_cv_func__hypot_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _hypot(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__hypot_use=yes
-+else
-+  glibcxx_cv_func__hypot_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__hypot_use" >&5
-+$as_echo "$glibcxx_cv_func__hypot_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
-+      for ac_func in _hypot
-+do :
-+  ac_fn_c_check_func "$LINENO" "_hypot" "ac_cv_func__hypot"
-+if test "x$ac_cv_func__hypot" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__HYPOT 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for float trig functions" >&5
-+$as_echo_n "checking for float trig functions... " >&6; }
-+  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+    ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+acosf (0); asinf (0); atanf (0); cosf (0); sinf (0); tanf (0); coshf (0); sinhf (0); tanhf (0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_float_trig_use=yes
-+else
-+  glibcxx_cv_func_float_trig_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+    ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+fi
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_float_trig_use" >&5
-+$as_echo "$glibcxx_cv_func_float_trig_use" >&6; }
-+  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
-+    for ac_func in acosf asinf atanf cosf sinf tanf coshf sinhf tanhf
-+do :
-+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-+eval as_val=\$$as_ac_var
-+   if test "x$as_val" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _float trig functions" >&5
-+$as_echo_n "checking for _float trig functions... " >&6; }
-+    if test "${glibcxx_cv_func__float_trig_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+_acosf (0); _asinf (0); _atanf (0); _cosf (0); _sinf (0); _tanf (0); _coshf (0); _sinhf (0); _tanhf (0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__float_trig_use=yes
-+else
-+  glibcxx_cv_func__float_trig_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+fi
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__float_trig_use" >&5
-+$as_echo "$glibcxx_cv_func__float_trig_use" >&6; }
-+    if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
-+      for ac_func in _acosf _asinf _atanf _cosf _sinf _tanf _coshf _sinhf _tanhf
-+do :
-+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-+eval as_val=\$$as_ac_var
-+   if test "x$as_val" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for float round functions" >&5
-+$as_echo_n "checking for float round functions... " >&6; }
-+  if test "${glibcxx_cv_func_float_round_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+    ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ceilf (0); floorf (0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_float_round_use=yes
-+else
-+  glibcxx_cv_func_float_round_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+    ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+fi
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_float_round_use" >&5
-+$as_echo "$glibcxx_cv_func_float_round_use" >&6; }
-+  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
-+    for ac_func in ceilf floorf
-+do :
-+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-+eval as_val=\$$as_ac_var
-+   if test "x$as_val" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _float round functions" >&5
-+$as_echo_n "checking for _float round functions... " >&6; }
-+    if test "${glibcxx_cv_func__float_round_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+_ceilf (0); _floorf (0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__float_round_use=yes
-+else
-+  glibcxx_cv_func__float_round_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+fi
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__float_round_use" >&5
-+$as_echo "$glibcxx_cv_func__float_round_use" >&6; }
-+    if test x$glibcxx_cv_func__float_round_use = x"yes"; then
-+      for ac_func in _ceilf _floorf
-+do :
-+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-+eval as_val=\$$as_ac_var
-+   if test "x$as_val" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for expf declaration" >&5
-+$as_echo_n "checking for expf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_expf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_expf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ expf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_expf_use=yes
-+else
-+  glibcxx_cv_func_expf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_expf_use" >&5
-+$as_echo "$glibcxx_cv_func_expf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_expf_use = x"yes"; then
-+    for ac_func in expf
-+do :
-+  ac_fn_c_check_func "$LINENO" "expf" "ac_cv_func_expf"
-+if test "x$ac_cv_func_expf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_EXPF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _expf declaration" >&5
-+$as_echo_n "checking for _expf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__expf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__expf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _expf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__expf_use=yes
-+else
-+  glibcxx_cv_func__expf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__expf_use" >&5
-+$as_echo "$glibcxx_cv_func__expf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__expf_use = x"yes"; then
-+      for ac_func in _expf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_expf" "ac_cv_func__expf"
-+if test "x$ac_cv_func__expf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__EXPF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isnanf declaration" >&5
-+$as_echo_n "checking for isnanf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ isnanf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_isnanf_use=yes
-+else
-+  glibcxx_cv_func_isnanf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_isnanf_use" >&5
-+$as_echo "$glibcxx_cv_func_isnanf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
-+    for ac_func in isnanf
-+do :
-+  ac_fn_c_check_func "$LINENO" "isnanf" "ac_cv_func_isnanf"
-+if test "x$ac_cv_func_isnanf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_ISNANF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _isnanf declaration" >&5
-+$as_echo_n "checking for _isnanf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _isnanf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__isnanf_use=yes
-+else
-+  glibcxx_cv_func__isnanf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__isnanf_use" >&5
-+$as_echo "$glibcxx_cv_func__isnanf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
-+      for ac_func in _isnanf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_isnanf" "ac_cv_func__isnanf"
-+if test "x$ac_cv_func__isnanf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__ISNANF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isinff declaration" >&5
-+$as_echo_n "checking for isinff declaration... " >&6; }
-+  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
-+    if test "${glibcxx_cv_func_isinff_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ isinff(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_isinff_use=yes
-+else
-+  glibcxx_cv_func_isinff_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_isinff_use" >&5
-+$as_echo "$glibcxx_cv_func_isinff_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
-+    for ac_func in isinff
-+do :
-+  ac_fn_c_check_func "$LINENO" "isinff" "ac_cv_func_isinff"
-+if test "x$ac_cv_func_isinff" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_ISINFF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _isinff declaration" >&5
-+$as_echo_n "checking for _isinff declaration... " >&6; }
-+  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
-+    if test "${glibcxx_cv_func__isinff_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _isinff(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__isinff_use=yes
-+else
-+  glibcxx_cv_func__isinff_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__isinff_use" >&5
-+$as_echo "$glibcxx_cv_func__isinff_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
-+      for ac_func in _isinff
-+do :
-+  ac_fn_c_check_func "$LINENO" "_isinff" "ac_cv_func__isinff"
-+if test "x$ac_cv_func__isinff" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__ISINFF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for atan2f declaration" >&5
-+$as_echo_n "checking for atan2f declaration... " >&6; }
-+  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
-+    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ atan2f(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_atan2f_use=yes
-+else
-+  glibcxx_cv_func_atan2f_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_atan2f_use" >&5
-+$as_echo "$glibcxx_cv_func_atan2f_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
-+    for ac_func in atan2f
-+do :
-+  ac_fn_c_check_func "$LINENO" "atan2f" "ac_cv_func_atan2f"
-+if test "x$ac_cv_func_atan2f" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_ATAN2F 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _atan2f declaration" >&5
-+$as_echo_n "checking for _atan2f declaration... " >&6; }
-+  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
-+    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _atan2f(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__atan2f_use=yes
-+else
-+  glibcxx_cv_func__atan2f_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__atan2f_use" >&5
-+$as_echo "$glibcxx_cv_func__atan2f_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
-+      for ac_func in _atan2f
-+do :
-+  ac_fn_c_check_func "$LINENO" "_atan2f" "ac_cv_func__atan2f"
-+if test "x$ac_cv_func__atan2f" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__ATAN2F 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fabsf declaration" >&5
-+$as_echo_n "checking for fabsf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ fabsf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_fabsf_use=yes
-+else
-+  glibcxx_cv_func_fabsf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_fabsf_use" >&5
-+$as_echo "$glibcxx_cv_func_fabsf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
-+    for ac_func in fabsf
-+do :
-+  ac_fn_c_check_func "$LINENO" "fabsf" "ac_cv_func_fabsf"
-+if test "x$ac_cv_func_fabsf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FABSF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _fabsf declaration" >&5
-+$as_echo_n "checking for _fabsf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _fabsf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__fabsf_use=yes
-+else
-+  glibcxx_cv_func__fabsf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__fabsf_use" >&5
-+$as_echo "$glibcxx_cv_func__fabsf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
-+      for ac_func in _fabsf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_fabsf" "ac_cv_func__fabsf"
-+if test "x$ac_cv_func__fabsf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FABSF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fmodf declaration" >&5
-+$as_echo_n "checking for fmodf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ fmodf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_fmodf_use=yes
-+else
-+  glibcxx_cv_func_fmodf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_fmodf_use" >&5
-+$as_echo "$glibcxx_cv_func_fmodf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
-+    for ac_func in fmodf
-+do :
-+  ac_fn_c_check_func "$LINENO" "fmodf" "ac_cv_func_fmodf"
-+if test "x$ac_cv_func_fmodf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FMODF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _fmodf declaration" >&5
-+$as_echo_n "checking for _fmodf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _fmodf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__fmodf_use=yes
-+else
-+  glibcxx_cv_func__fmodf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__fmodf_use" >&5
-+$as_echo "$glibcxx_cv_func__fmodf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
-+      for ac_func in _fmodf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_fmodf" "ac_cv_func__fmodf"
-+if test "x$ac_cv_func__fmodf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FMODF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for frexpf declaration" >&5
-+$as_echo_n "checking for frexpf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ frexpf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_frexpf_use=yes
-+else
-+  glibcxx_cv_func_frexpf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_frexpf_use" >&5
-+$as_echo "$glibcxx_cv_func_frexpf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
-+    for ac_func in frexpf
-+do :
-+  ac_fn_c_check_func "$LINENO" "frexpf" "ac_cv_func_frexpf"
-+if test "x$ac_cv_func_frexpf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FREXPF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _frexpf declaration" >&5
-+$as_echo_n "checking for _frexpf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _frexpf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__frexpf_use=yes
-+else
-+  glibcxx_cv_func__frexpf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__frexpf_use" >&5
-+$as_echo "$glibcxx_cv_func__frexpf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
-+      for ac_func in _frexpf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_frexpf" "ac_cv_func__frexpf"
-+if test "x$ac_cv_func__frexpf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FREXPF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for hypotf declaration" >&5
-+$as_echo_n "checking for hypotf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ hypotf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_hypotf_use=yes
-+else
-+  glibcxx_cv_func_hypotf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_hypotf_use" >&5
-+$as_echo "$glibcxx_cv_func_hypotf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
-+    for ac_func in hypotf
-+do :
-+  ac_fn_c_check_func "$LINENO" "hypotf" "ac_cv_func_hypotf"
-+if test "x$ac_cv_func_hypotf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_HYPOTF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _hypotf declaration" >&5
-+$as_echo_n "checking for _hypotf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _hypotf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__hypotf_use=yes
-+else
-+  glibcxx_cv_func__hypotf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__hypotf_use" >&5
-+$as_echo "$glibcxx_cv_func__hypotf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
-+      for ac_func in _hypotf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_hypotf" "ac_cv_func__hypotf"
-+if test "x$ac_cv_func__hypotf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__HYPOTF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ldexpf declaration" >&5
-+$as_echo_n "checking for ldexpf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ ldexpf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_ldexpf_use=yes
-+else
-+  glibcxx_cv_func_ldexpf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_ldexpf_use" >&5
-+$as_echo "$glibcxx_cv_func_ldexpf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
-+    for ac_func in ldexpf
-+do :
-+  ac_fn_c_check_func "$LINENO" "ldexpf" "ac_cv_func_ldexpf"
-+if test "x$ac_cv_func_ldexpf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_LDEXPF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _ldexpf declaration" >&5
-+$as_echo_n "checking for _ldexpf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _ldexpf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__ldexpf_use=yes
-+else
-+  glibcxx_cv_func__ldexpf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__ldexpf_use" >&5
-+$as_echo "$glibcxx_cv_func__ldexpf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
-+      for ac_func in _ldexpf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_ldexpf" "ac_cv_func__ldexpf"
-+if test "x$ac_cv_func__ldexpf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__LDEXPF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for logf declaration" >&5
-+$as_echo_n "checking for logf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_logf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_logf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ logf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_logf_use=yes
-+else
-+  glibcxx_cv_func_logf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_logf_use" >&5
-+$as_echo "$glibcxx_cv_func_logf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_logf_use = x"yes"; then
-+    for ac_func in logf
-+do :
-+  ac_fn_c_check_func "$LINENO" "logf" "ac_cv_func_logf"
-+if test "x$ac_cv_func_logf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_LOGF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _logf declaration" >&5
-+$as_echo_n "checking for _logf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__logf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__logf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _logf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__logf_use=yes
-+else
-+  glibcxx_cv_func__logf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__logf_use" >&5
-+$as_echo "$glibcxx_cv_func__logf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__logf_use = x"yes"; then
-+      for ac_func in _logf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_logf" "ac_cv_func__logf"
-+if test "x$ac_cv_func__logf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__LOGF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for log10f declaration" >&5
-+$as_echo_n "checking for log10f declaration... " >&6; }
-+  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
-+    if test "${glibcxx_cv_func_log10f_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ log10f(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_log10f_use=yes
-+else
-+  glibcxx_cv_func_log10f_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_log10f_use" >&5
-+$as_echo "$glibcxx_cv_func_log10f_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
-+    for ac_func in log10f
-+do :
-+  ac_fn_c_check_func "$LINENO" "log10f" "ac_cv_func_log10f"
-+if test "x$ac_cv_func_log10f" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_LOG10F 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _log10f declaration" >&5
-+$as_echo_n "checking for _log10f declaration... " >&6; }
-+  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
-+    if test "${glibcxx_cv_func__log10f_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _log10f(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__log10f_use=yes
-+else
-+  glibcxx_cv_func__log10f_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__log10f_use" >&5
-+$as_echo "$glibcxx_cv_func__log10f_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
-+      for ac_func in _log10f
-+do :
-+  ac_fn_c_check_func "$LINENO" "_log10f" "ac_cv_func__log10f"
-+if test "x$ac_cv_func__log10f" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__LOG10F 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for modff declaration" >&5
-+$as_echo_n "checking for modff declaration... " >&6; }
-+  if test x${glibcxx_cv_func_modff_use+set} != xset; then
-+    if test "${glibcxx_cv_func_modff_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ modff(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_modff_use=yes
-+else
-+  glibcxx_cv_func_modff_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_modff_use" >&5
-+$as_echo "$glibcxx_cv_func_modff_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_modff_use = x"yes"; then
-+    for ac_func in modff
-+do :
-+  ac_fn_c_check_func "$LINENO" "modff" "ac_cv_func_modff"
-+if test "x$ac_cv_func_modff" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_MODFF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _modff declaration" >&5
-+$as_echo_n "checking for _modff declaration... " >&6; }
-+  if test x${glibcxx_cv_func__modff_use+set} != xset; then
-+    if test "${glibcxx_cv_func__modff_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _modff(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__modff_use=yes
-+else
-+  glibcxx_cv_func__modff_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__modff_use" >&5
-+$as_echo "$glibcxx_cv_func__modff_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__modff_use = x"yes"; then
-+      for ac_func in _modff
-+do :
-+  ac_fn_c_check_func "$LINENO" "_modff" "ac_cv_func__modff"
-+if test "x$ac_cv_func__modff" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__MODFF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for modf declaration" >&5
-+$as_echo_n "checking for modf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_modf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_modf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ modf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_modf_use=yes
-+else
-+  glibcxx_cv_func_modf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_modf_use" >&5
-+$as_echo "$glibcxx_cv_func_modf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_modf_use = x"yes"; then
-+    for ac_func in modf
-+do :
-+  ac_fn_c_check_func "$LINENO" "modf" "ac_cv_func_modf"
-+if test "x$ac_cv_func_modf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_MODF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _modf declaration" >&5
-+$as_echo_n "checking for _modf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__modf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__modf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _modf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__modf_use=yes
-+else
-+  glibcxx_cv_func__modf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__modf_use" >&5
-+$as_echo "$glibcxx_cv_func__modf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__modf_use = x"yes"; then
-+      for ac_func in _modf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_modf" "ac_cv_func__modf"
-+if test "x$ac_cv_func__modf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__MODF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for powf declaration" >&5
-+$as_echo_n "checking for powf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_powf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_powf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ powf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_powf_use=yes
-+else
-+  glibcxx_cv_func_powf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_powf_use" >&5
-+$as_echo "$glibcxx_cv_func_powf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_powf_use = x"yes"; then
-+    for ac_func in powf
-+do :
-+  ac_fn_c_check_func "$LINENO" "powf" "ac_cv_func_powf"
-+if test "x$ac_cv_func_powf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_POWF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _powf declaration" >&5
-+$as_echo_n "checking for _powf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__powf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__powf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _powf(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__powf_use=yes
-+else
-+  glibcxx_cv_func__powf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__powf_use" >&5
-+$as_echo "$glibcxx_cv_func__powf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__powf_use = x"yes"; then
-+      for ac_func in _powf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_powf" "ac_cv_func__powf"
-+if test "x$ac_cv_func__powf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__POWF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqrtf declaration" >&5
-+$as_echo_n "checking for sqrtf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ sqrtf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_sqrtf_use=yes
-+else
-+  glibcxx_cv_func_sqrtf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_sqrtf_use" >&5
-+$as_echo "$glibcxx_cv_func_sqrtf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
-+    for ac_func in sqrtf
-+do :
-+  ac_fn_c_check_func "$LINENO" "sqrtf" "ac_cv_func_sqrtf"
-+if test "x$ac_cv_func_sqrtf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_SQRTF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _sqrtf declaration" >&5
-+$as_echo_n "checking for _sqrtf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _sqrtf(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__sqrtf_use=yes
-+else
-+  glibcxx_cv_func__sqrtf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__sqrtf_use" >&5
-+$as_echo "$glibcxx_cv_func__sqrtf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
-+      for ac_func in _sqrtf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_sqrtf" "ac_cv_func__sqrtf"
-+if test "x$ac_cv_func__sqrtf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__SQRTF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sincosf declaration" >&5
-+$as_echo_n "checking for sincosf declaration... " >&6; }
-+  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
-+    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ sincosf(0, 0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_sincosf_use=yes
-+else
-+  glibcxx_cv_func_sincosf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_sincosf_use" >&5
-+$as_echo "$glibcxx_cv_func_sincosf_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
-+    for ac_func in sincosf
-+do :
-+  ac_fn_c_check_func "$LINENO" "sincosf" "ac_cv_func_sincosf"
-+if test "x$ac_cv_func_sincosf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_SINCOSF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _sincosf declaration" >&5
-+$as_echo_n "checking for _sincosf declaration... " >&6; }
-+  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
-+    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _sincosf(0, 0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__sincosf_use=yes
-+else
-+  glibcxx_cv_func__sincosf_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__sincosf_use" >&5
-+$as_echo "$glibcxx_cv_func__sincosf_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
-+      for ac_func in _sincosf
-+do :
-+  ac_fn_c_check_func "$LINENO" "_sincosf" "ac_cv_func__sincosf"
-+if test "x$ac_cv_func__sincosf" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__SINCOSF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for finitef declaration" >&5
-+$as_echo_n "checking for finitef declaration... " >&6; }
-+  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
-+    if test "${glibcxx_cv_func_finitef_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ finitef(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_finitef_use=yes
-+else
-+  glibcxx_cv_func_finitef_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_finitef_use" >&5
-+$as_echo "$glibcxx_cv_func_finitef_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
-+    for ac_func in finitef
-+do :
-+  ac_fn_c_check_func "$LINENO" "finitef" "ac_cv_func_finitef"
-+if test "x$ac_cv_func_finitef" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FINITEF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _finitef declaration" >&5
-+$as_echo_n "checking for _finitef declaration... " >&6; }
-+  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
-+    if test "${glibcxx_cv_func__finitef_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _finitef(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__finitef_use=yes
-+else
-+  glibcxx_cv_func__finitef_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__finitef_use" >&5
-+$as_echo "$glibcxx_cv_func__finitef_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
-+      for ac_func in _finitef
-+do :
-+  ac_fn_c_check_func "$LINENO" "_finitef" "ac_cv_func__finitef"
-+if test "x$ac_cv_func__finitef" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FINITEF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for long double trig functions" >&5
-+$as_echo_n "checking for long double trig functions... " >&6; }
-+  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+    ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+acosl (0); asinl (0); atanl (0); cosl (0); sinl (0); tanl (0); coshl (0); sinhl (0); tanhl (0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_long_double_trig_use=yes
-+else
-+  glibcxx_cv_func_long_double_trig_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+    ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+fi
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_long_double_trig_use" >&5
-+$as_echo "$glibcxx_cv_func_long_double_trig_use" >&6; }
-+  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
-+    for ac_func in acosl asinl atanl cosl sinl tanl coshl sinhl tanhl
-+do :
-+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-+eval as_val=\$$as_ac_var
-+   if test "x$as_val" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _long double trig functions" >&5
-+$as_echo_n "checking for _long double trig functions... " >&6; }
-+    if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+_acosl (0); _asinl (0); _atanl (0); _cosl (0); _sinl (0); _tanl (0); _coshl (0); _sinhl (0); _tanhl (0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__long_double_trig_use=yes
-+else
-+  glibcxx_cv_func__long_double_trig_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+fi
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__long_double_trig_use" >&5
-+$as_echo "$glibcxx_cv_func__long_double_trig_use" >&6; }
-+    if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
-+      for ac_func in _acosl _asinl _atanl _cosl _sinl _tanl _coshl _sinhl _tanhl
-+do :
-+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-+eval as_val=\$$as_ac_var
-+   if test "x$as_val" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for long double round functions" >&5
-+$as_echo_n "checking for long double round functions... " >&6; }
-+  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+    ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ceill (0); floorl (0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_long_double_round_use=yes
-+else
-+  glibcxx_cv_func_long_double_round_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+    ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+fi
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_long_double_round_use" >&5
-+$as_echo "$glibcxx_cv_func_long_double_round_use" >&6; }
-+  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
-+    for ac_func in ceill floorl
-+do :
-+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-+eval as_val=\$$as_ac_var
-+   if test "x$as_val" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _long double round functions" >&5
-+$as_echo_n "checking for _long double round functions... " >&6; }
-+    if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+_ceill (0); _floorl (0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__long_double_round_use=yes
-+else
-+  glibcxx_cv_func__long_double_round_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+fi
-+
-+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__long_double_round_use" >&5
-+$as_echo "$glibcxx_cv_func__long_double_round_use" >&6; }
-+    if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
-+      for ac_func in _ceill _floorl
-+do :
-+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-+eval as_val=\$$as_ac_var
-+   if test "x$as_val" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isnanl declaration" >&5
-+$as_echo_n "checking for isnanl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ isnanl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_isnanl_use=yes
-+else
-+  glibcxx_cv_func_isnanl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_isnanl_use" >&5
-+$as_echo "$glibcxx_cv_func_isnanl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
-+    for ac_func in isnanl
-+do :
-+  ac_fn_c_check_func "$LINENO" "isnanl" "ac_cv_func_isnanl"
-+if test "x$ac_cv_func_isnanl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_ISNANL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _isnanl declaration" >&5
-+$as_echo_n "checking for _isnanl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _isnanl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__isnanl_use=yes
-+else
-+  glibcxx_cv_func__isnanl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__isnanl_use" >&5
-+$as_echo "$glibcxx_cv_func__isnanl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
-+      for ac_func in _isnanl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_isnanl" "ac_cv_func__isnanl"
-+if test "x$ac_cv_func__isnanl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__ISNANL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isinfl declaration" >&5
-+$as_echo_n "checking for isinfl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ isinfl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_isinfl_use=yes
-+else
-+  glibcxx_cv_func_isinfl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_isinfl_use" >&5
-+$as_echo "$glibcxx_cv_func_isinfl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
-+    for ac_func in isinfl
-+do :
-+  ac_fn_c_check_func "$LINENO" "isinfl" "ac_cv_func_isinfl"
-+if test "x$ac_cv_func_isinfl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_ISINFL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _isinfl declaration" >&5
-+$as_echo_n "checking for _isinfl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _isinfl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__isinfl_use=yes
-+else
-+  glibcxx_cv_func__isinfl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__isinfl_use" >&5
-+$as_echo "$glibcxx_cv_func__isinfl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
-+      for ac_func in _isinfl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_isinfl" "ac_cv_func__isinfl"
-+if test "x$ac_cv_func__isinfl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__ISINFL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for atan2l declaration" >&5
-+$as_echo_n "checking for atan2l declaration... " >&6; }
-+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
-+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ atan2l(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_atan2l_use=yes
-+else
-+  glibcxx_cv_func_atan2l_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_atan2l_use" >&5
-+$as_echo "$glibcxx_cv_func_atan2l_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
-+    for ac_func in atan2l
-+do :
-+  ac_fn_c_check_func "$LINENO" "atan2l" "ac_cv_func_atan2l"
-+if test "x$ac_cv_func_atan2l" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_ATAN2L 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _atan2l declaration" >&5
-+$as_echo_n "checking for _atan2l declaration... " >&6; }
-+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
-+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _atan2l(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__atan2l_use=yes
-+else
-+  glibcxx_cv_func__atan2l_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__atan2l_use" >&5
-+$as_echo "$glibcxx_cv_func__atan2l_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
-+      for ac_func in _atan2l
-+do :
-+  ac_fn_c_check_func "$LINENO" "_atan2l" "ac_cv_func__atan2l"
-+if test "x$ac_cv_func__atan2l" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__ATAN2L 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for expl declaration" >&5
-+$as_echo_n "checking for expl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_expl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ expl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_expl_use=yes
-+else
-+  glibcxx_cv_func_expl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_expl_use" >&5
-+$as_echo "$glibcxx_cv_func_expl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
-+    for ac_func in expl
-+do :
-+  ac_fn_c_check_func "$LINENO" "expl" "ac_cv_func_expl"
-+if test "x$ac_cv_func_expl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_EXPL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _expl declaration" >&5
-+$as_echo_n "checking for _expl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__expl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _expl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__expl_use=yes
-+else
-+  glibcxx_cv_func__expl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__expl_use" >&5
-+$as_echo "$glibcxx_cv_func__expl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
-+      for ac_func in _expl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_expl" "ac_cv_func__expl"
-+if test "x$ac_cv_func__expl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__EXPL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fabsl declaration" >&5
-+$as_echo_n "checking for fabsl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ fabsl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_fabsl_use=yes
-+else
-+  glibcxx_cv_func_fabsl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_fabsl_use" >&5
-+$as_echo "$glibcxx_cv_func_fabsl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
-+    for ac_func in fabsl
-+do :
-+  ac_fn_c_check_func "$LINENO" "fabsl" "ac_cv_func_fabsl"
-+if test "x$ac_cv_func_fabsl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FABSL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _fabsl declaration" >&5
-+$as_echo_n "checking for _fabsl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _fabsl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__fabsl_use=yes
-+else
-+  glibcxx_cv_func__fabsl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__fabsl_use" >&5
-+$as_echo "$glibcxx_cv_func__fabsl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
-+      for ac_func in _fabsl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_fabsl" "ac_cv_func__fabsl"
-+if test "x$ac_cv_func__fabsl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FABSL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for fmodl declaration" >&5
-+$as_echo_n "checking for fmodl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ fmodl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_fmodl_use=yes
-+else
-+  glibcxx_cv_func_fmodl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_fmodl_use" >&5
-+$as_echo "$glibcxx_cv_func_fmodl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
-+    for ac_func in fmodl
-+do :
-+  ac_fn_c_check_func "$LINENO" "fmodl" "ac_cv_func_fmodl"
-+if test "x$ac_cv_func_fmodl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FMODL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _fmodl declaration" >&5
-+$as_echo_n "checking for _fmodl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _fmodl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__fmodl_use=yes
-+else
-+  glibcxx_cv_func__fmodl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__fmodl_use" >&5
-+$as_echo "$glibcxx_cv_func__fmodl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
-+      for ac_func in _fmodl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_fmodl" "ac_cv_func__fmodl"
-+if test "x$ac_cv_func__fmodl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FMODL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for frexpl declaration" >&5
-+$as_echo_n "checking for frexpl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ frexpl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_frexpl_use=yes
-+else
-+  glibcxx_cv_func_frexpl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_frexpl_use" >&5
-+$as_echo "$glibcxx_cv_func_frexpl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
-+    for ac_func in frexpl
-+do :
-+  ac_fn_c_check_func "$LINENO" "frexpl" "ac_cv_func_frexpl"
-+if test "x$ac_cv_func_frexpl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FREXPL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _frexpl declaration" >&5
-+$as_echo_n "checking for _frexpl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _frexpl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__frexpl_use=yes
-+else
-+  glibcxx_cv_func__frexpl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__frexpl_use" >&5
-+$as_echo "$glibcxx_cv_func__frexpl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
-+      for ac_func in _frexpl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_frexpl" "ac_cv_func__frexpl"
-+if test "x$ac_cv_func__frexpl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FREXPL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for hypotl declaration" >&5
-+$as_echo_n "checking for hypotl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ hypotl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_hypotl_use=yes
-+else
-+  glibcxx_cv_func_hypotl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_hypotl_use" >&5
-+$as_echo "$glibcxx_cv_func_hypotl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
-+    for ac_func in hypotl
-+do :
-+  ac_fn_c_check_func "$LINENO" "hypotl" "ac_cv_func_hypotl"
-+if test "x$ac_cv_func_hypotl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_HYPOTL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _hypotl declaration" >&5
-+$as_echo_n "checking for _hypotl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _hypotl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__hypotl_use=yes
-+else
-+  glibcxx_cv_func__hypotl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__hypotl_use" >&5
-+$as_echo "$glibcxx_cv_func__hypotl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
-+      for ac_func in _hypotl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_hypotl" "ac_cv_func__hypotl"
-+if test "x$ac_cv_func__hypotl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__HYPOTL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ldexpl declaration" >&5
-+$as_echo_n "checking for ldexpl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ ldexpl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_ldexpl_use=yes
-+else
-+  glibcxx_cv_func_ldexpl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_ldexpl_use" >&5
-+$as_echo "$glibcxx_cv_func_ldexpl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
-+    for ac_func in ldexpl
-+do :
-+  ac_fn_c_check_func "$LINENO" "ldexpl" "ac_cv_func_ldexpl"
-+if test "x$ac_cv_func_ldexpl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_LDEXPL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _ldexpl declaration" >&5
-+$as_echo_n "checking for _ldexpl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _ldexpl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__ldexpl_use=yes
-+else
-+  glibcxx_cv_func__ldexpl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__ldexpl_use" >&5
-+$as_echo "$glibcxx_cv_func__ldexpl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
-+      for ac_func in _ldexpl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_ldexpl" "ac_cv_func__ldexpl"
-+if test "x$ac_cv_func__ldexpl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__LDEXPL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for logl declaration" >&5
-+$as_echo_n "checking for logl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_logl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ logl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_logl_use=yes
-+else
-+  glibcxx_cv_func_logl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_logl_use" >&5
-+$as_echo "$glibcxx_cv_func_logl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
-+    for ac_func in logl
-+do :
-+  ac_fn_c_check_func "$LINENO" "logl" "ac_cv_func_logl"
-+if test "x$ac_cv_func_logl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_LOGL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _logl declaration" >&5
-+$as_echo_n "checking for _logl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__logl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _logl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__logl_use=yes
-+else
-+  glibcxx_cv_func__logl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__logl_use" >&5
-+$as_echo "$glibcxx_cv_func__logl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
-+      for ac_func in _logl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_logl" "ac_cv_func__logl"
-+if test "x$ac_cv_func__logl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__LOGL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for log10l declaration" >&5
-+$as_echo_n "checking for log10l declaration... " >&6; }
-+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
-+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ log10l(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_log10l_use=yes
-+else
-+  glibcxx_cv_func_log10l_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_log10l_use" >&5
-+$as_echo "$glibcxx_cv_func_log10l_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
-+    for ac_func in log10l
-+do :
-+  ac_fn_c_check_func "$LINENO" "log10l" "ac_cv_func_log10l"
-+if test "x$ac_cv_func_log10l" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_LOG10L 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _log10l declaration" >&5
-+$as_echo_n "checking for _log10l declaration... " >&6; }
-+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
-+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _log10l(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__log10l_use=yes
-+else
-+  glibcxx_cv_func__log10l_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__log10l_use" >&5
-+$as_echo "$glibcxx_cv_func__log10l_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
-+      for ac_func in _log10l
-+do :
-+  ac_fn_c_check_func "$LINENO" "_log10l" "ac_cv_func__log10l"
-+if test "x$ac_cv_func__log10l" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__LOG10L 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for modfl declaration" >&5
-+$as_echo_n "checking for modfl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ modfl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_modfl_use=yes
-+else
-+  glibcxx_cv_func_modfl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_modfl_use" >&5
-+$as_echo "$glibcxx_cv_func_modfl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
-+    for ac_func in modfl
-+do :
-+  ac_fn_c_check_func "$LINENO" "modfl" "ac_cv_func_modfl"
-+if test "x$ac_cv_func_modfl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_MODFL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _modfl declaration" >&5
-+$as_echo_n "checking for _modfl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _modfl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__modfl_use=yes
-+else
-+  glibcxx_cv_func__modfl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__modfl_use" >&5
-+$as_echo "$glibcxx_cv_func__modfl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
-+      for ac_func in _modfl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_modfl" "ac_cv_func__modfl"
-+if test "x$ac_cv_func__modfl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__MODFL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for powl declaration" >&5
-+$as_echo_n "checking for powl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_powl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ powl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_powl_use=yes
-+else
-+  glibcxx_cv_func_powl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_powl_use" >&5
-+$as_echo "$glibcxx_cv_func_powl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
-+    for ac_func in powl
-+do :
-+  ac_fn_c_check_func "$LINENO" "powl" "ac_cv_func_powl"
-+if test "x$ac_cv_func_powl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_POWL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _powl declaration" >&5
-+$as_echo_n "checking for _powl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__powl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _powl(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__powl_use=yes
-+else
-+  glibcxx_cv_func__powl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__powl_use" >&5
-+$as_echo "$glibcxx_cv_func__powl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
-+      for ac_func in _powl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_powl" "ac_cv_func__powl"
-+if test "x$ac_cv_func__powl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__POWL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqrtl declaration" >&5
-+$as_echo_n "checking for sqrtl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ sqrtl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_sqrtl_use=yes
-+else
-+  glibcxx_cv_func_sqrtl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_sqrtl_use" >&5
-+$as_echo "$glibcxx_cv_func_sqrtl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
-+    for ac_func in sqrtl
-+do :
-+  ac_fn_c_check_func "$LINENO" "sqrtl" "ac_cv_func_sqrtl"
-+if test "x$ac_cv_func_sqrtl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_SQRTL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _sqrtl declaration" >&5
-+$as_echo_n "checking for _sqrtl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _sqrtl(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__sqrtl_use=yes
-+else
-+  glibcxx_cv_func__sqrtl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__sqrtl_use" >&5
-+$as_echo "$glibcxx_cv_func__sqrtl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
-+      for ac_func in _sqrtl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_sqrtl" "ac_cv_func__sqrtl"
-+if test "x$ac_cv_func__sqrtl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__SQRTL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sincosl declaration" >&5
-+$as_echo_n "checking for sincosl declaration... " >&6; }
-+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
-+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ sincosl(0, 0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_sincosl_use=yes
-+else
-+  glibcxx_cv_func_sincosl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_sincosl_use" >&5
-+$as_echo "$glibcxx_cv_func_sincosl_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
-+    for ac_func in sincosl
-+do :
-+  ac_fn_c_check_func "$LINENO" "sincosl" "ac_cv_func_sincosl"
-+if test "x$ac_cv_func_sincosl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_SINCOSL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _sincosl declaration" >&5
-+$as_echo_n "checking for _sincosl declaration... " >&6; }
-+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
-+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+int
-+main ()
-+{
-+ _sincosl(0, 0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__sincosl_use=yes
-+else
-+  glibcxx_cv_func__sincosl_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__sincosl_use" >&5
-+$as_echo "$glibcxx_cv_func__sincosl_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
-+      for ac_func in _sincosl
-+do :
-+  ac_fn_c_check_func "$LINENO" "_sincosl" "ac_cv_func__sincosl"
-+if test "x$ac_cv_func__sincosl" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__SINCOSL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for finitel declaration" >&5
-+$as_echo_n "checking for finitel declaration... " >&6; }
-+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
-+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ finitel(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_finitel_use=yes
-+else
-+  glibcxx_cv_func_finitel_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_finitel_use" >&5
-+$as_echo "$glibcxx_cv_func_finitel_use" >&6; }
-+
-+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
-+    for ac_func in finitel
-+do :
-+  ac_fn_c_check_func "$LINENO" "finitel" "ac_cv_func_finitel"
-+if test "x$ac_cv_func_finitel" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_FINITEL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  else
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _finitel declaration" >&5
-+$as_echo_n "checking for _finitel declaration... " >&6; }
-+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
-+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <math.h>
-+		      #ifdef HAVE_IEEEFP_H
-+		      #include <ieeefp.h>
-+		      #endif
-+
-+int
-+main ()
-+{
-+ _finitel(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func__finitel_use=yes
-+else
-+  glibcxx_cv_func__finitel_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func__finitel_use" >&5
-+$as_echo "$glibcxx_cv_func__finitel_use" >&6; }
-+
-+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
-+      for ac_func in _finitel
-+do :
-+  ac_fn_c_check_func "$LINENO" "_finitel" "ac_cv_func__finitel"
-+if test "x$ac_cv_func__finitel" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE__FINITEL 1
-+_ACEOF
-+
-+fi
-+done
-+
-+    fi
-+  fi
-+
-+
-+
-+
-+  LIBS="$ac_save_LIBS"
-+  CXXFLAGS="$ac_save_CXXFLAGS"
-+
-+
-+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-+  ac_save_CXXFLAGS="$CXXFLAGS"
-+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for at_quick_exit declaration" >&5
-+$as_echo_n "checking for at_quick_exit declaration... " >&6; }
-+  if test x${glibcxx_cv_func_at_quick_exit_use+set} != xset; then
-+    if test "${glibcxx_cv_func_at_quick_exit_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <stdlib.h>
-+int
-+main ()
-+{
-+ at_quick_exit(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_at_quick_exit_use=yes
-+else
-+  glibcxx_cv_func_at_quick_exit_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_at_quick_exit_use" >&5
-+$as_echo "$glibcxx_cv_func_at_quick_exit_use" >&6; }
-+  if test x$glibcxx_cv_func_at_quick_exit_use = x"yes"; then
-+    for ac_func in at_quick_exit
-+do :
-+  ac_fn_c_check_func "$LINENO" "at_quick_exit" "ac_cv_func_at_quick_exit"
-+if test "x$ac_cv_func_at_quick_exit" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_AT_QUICK_EXIT 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  fi
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for quick_exit declaration" >&5
-+$as_echo_n "checking for quick_exit declaration... " >&6; }
-+  if test x${glibcxx_cv_func_quick_exit_use+set} != xset; then
-+    if test "${glibcxx_cv_func_quick_exit_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <stdlib.h>
-+int
-+main ()
-+{
-+ quick_exit(0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_quick_exit_use=yes
-+else
-+  glibcxx_cv_func_quick_exit_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_quick_exit_use" >&5
-+$as_echo "$glibcxx_cv_func_quick_exit_use" >&6; }
-+  if test x$glibcxx_cv_func_quick_exit_use = x"yes"; then
-+    for ac_func in quick_exit
-+do :
-+  ac_fn_c_check_func "$LINENO" "quick_exit" "ac_cv_func_quick_exit"
-+if test "x$ac_cv_func_quick_exit" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_QUICK_EXIT 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  fi
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for strtold declaration" >&5
-+$as_echo_n "checking for strtold declaration... " >&6; }
-+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
-+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <stdlib.h>
-+int
-+main ()
-+{
-+ strtold(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_strtold_use=yes
-+else
-+  glibcxx_cv_func_strtold_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_strtold_use" >&5
-+$as_echo "$glibcxx_cv_func_strtold_use" >&6; }
-+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
-+    for ac_func in strtold
-+do :
-+  ac_fn_c_check_func "$LINENO" "strtold" "ac_cv_func_strtold"
-+if test "x$ac_cv_func_strtold" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_STRTOLD 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  fi
-+
-+
-+
-+
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for strtof declaration" >&5
-+$as_echo_n "checking for strtof declaration... " >&6; }
-+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
-+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then :
-+  $as_echo_n "(cached) " >&6
-+else
-+
-+
-+      ac_ext=cpp
-+ac_cpp='$CXXCPP $CPPFLAGS'
-+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-+
-+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-+/* end confdefs.h.  */
-+#include <stdlib.h>
-+int
-+main ()
-+{
-+ strtof(0, 0);
-+  ;
-+  return 0;
-+}
-+_ACEOF
-+if ac_fn_cxx_try_compile "$LINENO"; then :
-+  glibcxx_cv_func_strtof_use=yes
-+else
-+  glibcxx_cv_func_strtof_use=no
-+fi
-+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-+      ac_ext=c
-+ac_cpp='$CPP $CPPFLAGS'
-+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-+ac_compiler_gnu=$ac_cv_c_compiler_gnu
-+
-+
-+fi
-+
-+  fi
-+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_func_strtof_use" >&5
-+$as_echo "$glibcxx_cv_func_strtof_use" >&6; }
-+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
-+    for ac_func in strtof
-+do :
-+  ac_fn_c_check_func "$LINENO" "strtof" "ac_cv_func_strtof"
-+if test "x$ac_cv_func_strtof" = x""yes; then :
-+  cat >>confdefs.h <<_ACEOF
-+#define HAVE_STRTOF 1
-+_ACEOF
-+
-+fi
-+done
-+
-+  fi
-+
-+
-+
-+
-+  CXXFLAGS="$ac_save_CXXFLAGS"
-+
++  serenity*)
++    lt_cv_dlopen="dlopen"
++    lt_cv_dlopen_libs="-ldl"
 +    ;;
 +
-+
-   arm*-*-symbianelf*)
+   darwin*)
+   # if libdl is installed we need to link against it
+     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+@@ -16478,7 +16483,7 @@ fi
+       dragonfly* | freebsd*)
+ 	enable_clocale_flag=dragonfly
+ 	;;
+-      openbsd*)
++      openbsd* | serenity*)
+ 	enable_clocale_flag=newlib
+ 	;;
+       *)
+@@ -20569,7 +20574,7 @@ fi
+         ac_has_nanosleep=yes
+         ac_has_sched_yield=yes
+         ;;
+-      freebsd*|netbsd*|dragonfly*|rtems*)
++      freebsd*|netbsd*|dragonfly*|rtems*|serenity*)
+         ac_has_clock_monotonic=yes
+         ac_has_clock_realtime=yes
+         ac_has_nanosleep=yes
+@@ -29245,7 +29250,7 @@ case "${host}" in
      # This is a freestanding configuration; there is nothing to do here.
      ;;
+ 
+-  avr*-*-*)
++  avr*-*-* | *serenity*)
+     $as_echo "#define HAVE_ACOSF 1" >>confdefs.h
+ 
+     $as_echo "#define HAVE_ASINF 1" >>confdefs.h
+diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
+index ec32980aa..e060300f3 100644
+--- a/libstdc++-v3/configure.host
++++ b/libstdc++-v3/configure.host
+@@ -297,6 +297,9 @@ case "${host_os}" in
+     # Use libatomic if necessary and avoid libstdc++ specific atomicity support
+     atomicity_dir="cpu/generic/atomicity_builtins"
+     ;;
++  serenity*)
++    os_include_dir="os/newlib"
++    ;;
+   solaris2*)
+     os_include_dir="os/solaris"
+     ;;
 diff --git a/libstdc++-v3/crossconfig.m4 b/libstdc++-v3/crossconfig.m4
-index ff44d5ae0..2ca1a4262 100644
+index ae5283b7a..b9fc96e94 100644
 --- a/libstdc++-v3/crossconfig.m4
 +++ b/libstdc++-v3/crossconfig.m4
-@@ -5,6 +5,13 @@ dnl
- AC_DEFUN([GLIBCXX_CROSSCONFIG],[
- # Base decisions on target environment.
- case "${host}" in
-+  *-serenity*)
-+    GLIBCXX_CHECK_COMPILER_FEATURES
-+    GLIBCXX_CHECK_LINKER_FEATURES
-+    GLIBCXX_CHECK_MATH_SUPPORT
-+    GLIBCXX_CHECK_STDLIB_SUPPORT
-+    ;;
-+
-   arm*-*-symbianelf*)
+@@ -9,7 +9,7 @@ case "${host}" in
      # This is a freestanding configuration; there is nothing to do here.
      ;;
-diff -ru a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
---- a/gcc/config/aarch64/aarch64.h	2021-04-08 13:56:28.000000000 +0200
-+++ b/gcc/config/aarch64/aarch64.h	2021-04-20 22:41:03.000000000 +0200
-@@ -1200,7 +1200,7 @@
- #define MCPU_TO_MARCH_SPEC_FUNCTIONS \
-   { "rewrite_mcpu", aarch64_rewrite_mcpu },
  
--#if defined(__aarch64__)
-+#if defined(__aarch64__) && ! defined(__APPLE__)
- extern const char *host_detect_local_cpu (int argc, const char **argv);
- #define HAVE_LOCAL_CPU_DETECT
- # define EXTRA_SPEC_FUNCTION
- 
\ No newline at end of file
+-  avr*-*-*)
++  avr*-*-* | *serenity*)
+     AC_DEFINE(HAVE_ACOSF)
+     AC_DEFINE(HAVE_ASINF)
+     AC_DEFINE(HAVE_ATAN2F)