# Copyright (c) 2003-2006 FlashCode <flashcode@flashtux.org>
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#

#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ(2.56)
AC_INIT(WeeChat, 0.2.1, flashcode@flashtux.org)
AC_CONFIG_SRCDIR([src/common/weechat.c])
AM_CONFIG_HEADER(config.h)
AM_INIT_AUTOMAKE([weechat], [0.2.1])

# Checks for programs
AC_PROG_CC
AC_PROG_MAKE_SET
AC_GNU_SOURCE
AM_PROG_LIBTOOL

# Add some flags for some OS
case "$host_os" in
freebsd* | openbsd*)
	CFLAGS="$CFLAGS -I/usr/local/include"
	LDFLAGS="$LDFLAGS -L/usr/local/lib"
        ;;
netbsd*)
	CFLAGS="$CFLAGS -I/usr/pkg/include"
	LDFLAGS="$LDFLAGS -L/usr/pkg/lib"
        ;;
solaris*)
	LDFLAGS="$LDFLAGS -lsocket -lxnet"
	;;
*)
        ;;
esac

# Gettext
ALL_LINGUAS="fr es cs hu de ru"
AM_GNU_GETTEXT

# Checks for libraries
AC_CHECK_LIB(ncurses, initscr, LIBNCURSES_FOUND=1, LIBNCURSES_FOUND=0)
AC_CHECK_LIB(ncursesw, initscr, LIBNCURSESW_FOUND=1, LIBNCURSESW_FOUND=0)

# Checks for header files
AC_HEADER_STDC
AC_CHECK_HEADERS([arpa/inet.h libintl.h limits.h locale.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h sys/time.h sys/types.h unistd.h pwd.h errno.h regex.h wchar.h sys/file.h])

if echo "$host_os" | grep "^openbsd" 1>/dev/null 2>&1 ; then
   AC_CHECK_HEADER(utf8/wchar.h, LDFLAGS="$LDFLAGS -lutf8", [AC_MSG_ERROR([
*** on OpenBSD systems, package libutf8 must be installed to compile WeeChat])])
fi

# Checks for typedefs, structures, and compiler characteristics
AC_HEADER_TIME
AC_STRUCT_TM

AC_MSG_CHECKING([for socklen_t])
AC_CACHE_VAL(ac_cv_type_socklen_t,
[AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>],
[socklen_t t;],
ac_cv_type_socklen_t=yes,
ac_cv_type_socklen_t=no,
)])
if test $ac_cv_type_socklen_t = no; then
AC_DEFINE(socklen_t, int, Define to 'int' if <sys/socket.h> doesn't define.)
fi
AC_MSG_RESULT($ac_cv_type_socklen_t)

# Checks for library functions.
AC_FUNC_SELECT_ARGTYPES
AC_TYPE_SIGNAL
AC_CHECK_FUNCS([gethostbyname gethostname getsockname gettimeofday inet_ntoa memset mkdir select setlocale socket strcasecmp strchr strdup strncasecmp strpbrk strrchr strstr uname regexec])

# Variables in config.h

AH_VERBATIM([PREFIX], [#undef PREFIX])
AH_VERBATIM([WEECHAT_LIBDIR], [#undef WEECHAT_LIBDIR])
AH_VERBATIM([WEECHAT_SHAREDIR], [#undef WEECHAT_SHAREDIR])
AH_VERBATIM([PLUGINS], [#undef PLUGINS])
AH_VERBATIM([PLUGIN_PERL], [#undef PLUGIN_PERL])
AH_VERBATIM([PLUGIN_PYTHON], [#undef PLUGIN_PYTHON])
AH_VERBATIM([PLUGIN_RUBY], [#undef PLUGIN_RUBY])
AH_VERBATIM([PLUGIN_LUA], [#undef PLUGIN_LUA])
AH_VERBATIM([PLUGIN_ASPELL], [#undef PLUGIN_ASPELL])
AH_VERBATIM([HAVE_GNUTLS], [#undef HAVE_GNUTLS])
AH_VERBATIM([HAVE_FLOCK], [#undef HAVE_FLOCK])
AH_VERBATIM([DEBUG], [#undef DEBUG])

# Arguments for ./configure

AC_ARG_ENABLE(ncurses,      [  --disable-ncurses         Turn off ncurses interface (default=compiled if found)],enable_ncurses=$enableval,enable_ncurses=yes)
AC_ARG_ENABLE(wxwidgets,    [  --enable-wxwidgets        Turn on WxWidgets interface (default=no wxwidgets)],enable_wxwidgets=$enableval,enable_wxwidgets=no)
AC_ARG_ENABLE(gtk,          [  --enable-gtk              Turn on Gtk interface (default=no Gtk)],enable_gtk=$enableval,enable_gtk=no)
AC_ARG_ENABLE(qt,           [  --enable-qt               Turn on Qt interface (default=no Qt)],enable_qt=$enableval,enable_qt=no)
AC_ARG_ENABLE(plugins,      [  --disable-plugins         Turn off plugins support (default=plugins enabled)],enable_plugins=$enableval,enable_plugins=yes)
AC_ARG_ENABLE(perl,         [  --disable-perl            Turn off Perl script plugin (default=compiled if found)],enable_perl=$enableval,enable_perl=yes)
AC_ARG_ENABLE(python,       [  --disable-python          Turn off Python script plugin (default=compiled if found)],enable_python=$enableval,enable_python=yes)
AC_ARG_ENABLE(ruby,         [  --disable-ruby            Turn off Ruby script plugin (default=compiled if found)],enable_ruby=$enableval,enable_ruby=yes)
AC_ARG_ENABLE(lua,          [  --disable-lua             Turn off Lua script plugin (default=compiled if found)],enable_lua=$enableval,enable_lua=yes)
AC_ARG_WITH(lua-inc,        [  --with-lua-inc=DIR,       Lua include files are in DIR (default=autodetect)],lua_inc=$withval,lua_inc='')
AC_ARG_WITH(lua-lib,        [  --with-lua-lib=DIR,       Lua library files are in DIR (default=autodetect)],lua_lib=$withval,lua_lib='')
AC_ARG_WITH(lua-suffix,     [  --with-lua-suffix=ARG     Lua is suffixed with ARG (default=autodetect)],lua_suffix=$withval,lua_suffix='')
AC_ARG_ENABLE(aspell,       [  --disable-aspell          Turn off Aspell plugin (default=compiled if found)],enable_aspell=$enableval,enable_aspell=yes)
AC_ARG_ENABLE(gnutls,       [  --disable-gnutls          Turn off gnutls support (default=compiled if found)],enable_gnutls=$enableval,enable_gnutls=yes)
AC_ARG_WITH(doc_xsl_prefix, [  --with-doc-xsl-prefix=DIR Docbook html/chunk.xsl is in DIR (default=autodetect)],doc_xsl_prefix=$withval,doc_xsl_prefix='')
AC_ARG_WITH(debug,          [  --with-debug              Debugging: 0=no debug, 1=debug compilation, 2=debug compilation + verbose msgs (default=1)],debug=$withval,debug=1)

not_found=""

# ------------------------------------------------------------------------------
#                                    GUI
# ------------------------------------------------------------------------------

if test "x$enable_ncurses" = "xyes" ; then
    if test "$LIBNCURSESW_FOUND" = "0" ; then
        if test "$LIBNCURSES_FOUND" = "0" ; then
            AC_MSG_WARN([
*** ncurses library not found!
*** WeeChat will be built without ncurses support.])
            enable_ncurses="no"
            not_found="$not_found ncurses"
        else
            AC_MSG_WARN([
*** ncursesw library not found! Falling back to "ncurses"
*** Be careful, UTF-8 display may not work properly if your locale is UTF-8.])
            NCURSES_LIBS="-lncurses"
        fi
    else
        NCURSES_LIBS="-lncursesw"
    fi
    AC_CHECK_HEADERS([ncurses.h ncursesw/curses.h])
    AC_SUBST(NCURSES_LIBS)
fi

#if test "x$enable_wxwidgets" = "xyes" ; then
#    AM_OPTIONS_WXCONFIG
#    AM_PATH_WXCONFIG(2.3.4, wxWin=1)
#
#    if test "$wxWin" != 1; then
#        AC_MSG_ERROR([
#*** wxWindows must be installed on your system
#*** but wx-config script couldn't be found.
#
#*** Please check that wx-config is in path, the directory
#*** where wxWindows libraries are installed (returned by
#*** 'wx-config --libs' command) is in LD_LIBRARY_PATH or
#*** equivalent variable and wxWindows version is 2.3.4 or above.
#        ])
#    fi
#
#    CPPFLAGS="$CPPFLAGS $WX_CPPFLAGS"
#    CXXFLAGS="$CXXFLAGS $WX_CXXFLAGS_ONLY"
#    CFLAGS="$CFLAGS $WX_CFLAGS_ONLY"
#    LDFLAGS="$LDFLAGS $WX_LIBS"
#
#    WXWIDGETS_CFLAGS=""
#    WXWIDGETS_LIBS=""
#fi

if test "x$enable_gtk" = "xyes" ; then
    AM_PATH_GTK_2_0(2.4.0, LIBGTK_FOUND=1, LIBGTK_FOUND=0)
    if test "$LIBGTK_FOUND" = "0" ; then
        AC_MSG_WARN([
*** Gtk library not found!
*** WeeChat will be built without Gtk support.])
        enable_gtk="no"
        not_found="$not_found gtk"
    else
        GTK_CFLAGS=`pkg-config --cflags gtk+-2.0`
        GTK_LIBS=`pkg-config --libs gtk+-2.0`
        AC_SUBST(GTK_CFLAGS)
        AC_SUBST(GTK_LIBS)
    fi
fi

# ------------------------------------------------------------------------------
#                                  iconv
# ------------------------------------------------------------------------------

iconv_found="no"

AC_CHECK_HEADER(iconv.h,ac_found_iconv_header="yes",ac_found_iconv_header="no")
if test "x$ac_found_iconv_header" = "xyes" ; then
   AC_CHECK_LIB(iconv,iconv_open,ac_found_iconv_lib="yes",ac_found_iconv_lib="no")
   if test "x$ac_found_iconv_lib" = "xyes" ; then
      LIBS="$LIBS -liconv"
   fi
   AC_MSG_CHECKING(for iconv usability in programs)   
   AC_TRY_RUN([
	#include <iconv.h>
	int main(int argc, char **argv) {
	    iconv_t conv = iconv_open("ISO8859-1", "UTF-8");
            if (conv != (iconv_t) -1) {
	      return 0;
            }
	    return 1;
      }],iconv_found="yes")
  if test "x$iconv_found" = "xno" ; then
     AC_MSG_RESULT(no)
  else
     AC_MSG_RESULT(yes)
  fi
fi

if test "x$iconv_found" = "xno" ; then
   AC_MSG_ERROR([
*** Iconv headers and/or libraries couldn't be found in your system.
*** Try to install them with your software package manager.
*** WeeChat can't be built without Iconv support.])
fi

# ------------------------------------------------------------------------------
#                                   plugins
# ------------------------------------------------------------------------------

PLUGINS_LIBS=

if test "x$enable_plugins" != "xyes" ; then
    enable_plugins="no"
    enable_perl="no"
    enable_python="no"
    enable_ruby="no"
    enable_lua="no"
    enable_aspell="no"
fi

# ---------------------------------- perl --------------------------------------

if test "x$enable_perl" = "xyes" ; then
    enable_plugins="yes"
    
    AC_PATH_PROGS(PERL, perl perl5)
    if test -z $PERL ; then
        AC_MSG_WARN([
*** Perl must be installed on your system but perl interpreter couldn't be found in path.
*** Please check that perl is in path, or install it with your software package manager.
*** WeeChat will be built without Perl support.])
        enable_perl="no"
        not_found="$not_found perl"
    else
        AC_MSG_CHECKING(for Perl headers files)
        
        PERL_HEADER_TEST=`PT=perltest.c ; echo "#include <EXTERN.h>" > $PT;  echo "#include <perl.h>" >> $PT;  echo "#include <XSUB.h>" >> $PT ;  echo "int main() { return 0; }" >> $PT ; $CC -Wall $PT -o $PT.out $($PERL -MExtUtils::Embed -e ccopts) 1>/dev/null 2>&1; echo $?; rm -f $PT $PT.out 1>/dev/null 2>&1`
        
        if test "x$PERL_HEADER_TEST" = "x0" ; then
            PERL_CFLAGS=`$PERL -MExtUtils::Embed -e ccopts`
            AC_MSG_RESULT(found)
            AC_MSG_CHECKING(for Perl library)
            PERL_LIB_TEST=`PT=perltest.c ; echo "int main() { return 0; }" > $PT ; $CC -Wall $PT -o $PT.out $($PERL -MExtUtils::Embed -e ldopts) 1>/dev/null 2>&1; echo $?; rm -f $PT $PT.out 1>/dev/null 2>&1`
            if test "x$PERL_LIB_TEST" = "x0" ; then
                PERL_LFLAGS=`$PERL -MExtUtils::Embed -e ldopts`
                AC_MSG_RESULT(found)
            else
                AC_MSG_WARN([
*** Perl library couldn't be found in your system.
*** Try to install it with your software package manager.
*** WeeChat will be built without Perl support.])
                enable_perl="no"
                not_found="$not_found perl"
            fi
        else
            AC_MSG_WARN([
*** Perl headers couldn't be found in your system.
*** Try to install it with your software package manager.
*** WeeChat will be built without Perl support.])
            enable_perl="no"
            not_found="$not_found perl"
        fi
    fi
fi

if test "x$enable_perl" = "xyes" ; then
    AC_SUBST(PERL_CFLAGS)
    AC_SUBST(PERL_LFLAGS)
    AC_DEFINE(PLUGIN_PERL)
fi

# --------------------------------- python -------------------------------------

if test "x$enable_python" = "xyes" ; then
    enable_plugins="yes"
    
    AC_PATH_PROGS(PYTHON, python python2.4 python2.3 python2.2)
    if test -z $PYTHON ; then
        AC_MSG_WARN([
*** Python must be installed on your system but python interpreter couldn't be found in path.
*** Please check that python is in path, or install it with your software package manager.
*** WeeChat will be built without Python support.])
        enable_python="no"
        not_found="$not_found python"
    else
        PYTHON_SYSPREFIX=`$PYTHON -c 'import sys; print "%s" % sys.prefix'`
        PYTHON_VERSION=`$PYTHON -c 'import sys ; print sys.version[[:3]]'`
        PYTHON_INCLUDE=`$PYTHON -c "import distutils.sysconfig,string; print distutils.sysconfig.get_config_var('CONFINCLUDEPY')"`
        
        AC_MSG_CHECKING(for Python header files)
        if test -r "$PYTHON_INCLUDE/Python.h"; then
            PYTHON_CFLAGS="-I$PYTHON_INCLUDE"
            AC_MSG_RESULT(found)
            PYTHON_LIB=`$PYTHON -c "import distutils.sysconfig; print distutils.sysconfig.get_config_var('LIBPL')"`
            PYTHON_LFLAGS="-lpython$PYTHON_VERSION "`$PYTHON -c "import distutils.sysconfig; print distutils.sysconfig.get_config_var('LIBS')+' '+distutils.sysconfig.get_config_var('SYSLIBS')+' '+distutils.sysconfig.get_config_var('LINKFORSHARED')"`
            AC_MSG_CHECKING(for Python library)
            if test -r "$PYTHON_LIB/libpython$PYTHON_VERSION.so"; then
               PYTHON_LFLAGS="-L$PYTHON_LIB $PYTHON_LFLAGS"
               AC_MSG_RESULT(found)
            elif test -r "$PYTHON_LIB/libpython$PYTHON_VERSION.a"; then
               PYTHON_LFLAGS="-L$PYTHON_LIB $PYTHON_LFLAGS"
               AC_MSG_RESULT(found)
            elif test -r "$PYTHON_SYSPREFIX/lib/libpython$PYTHON_VERSION.so"; then
               PYTHON_LFLAGS="-L$PYTHON_SYSPREFIX/lib/ $PYTHON_LFLAGS"
               AC_MSG_RESULT(found)
            else
                AC_MSG_WARN([
*** Python library couldn't be found in your system.            
*** Try to install it with your software package manager.
*** WeeChat will be built without Python support.])
                enable_python="no"
                not_found="$not_found python"
            fi
        else
            AC_MSG_WARN([
*** Python header files couldn't be found in your system.
*** Try to install them with your software package manager.
*** WeeChat will be built without Python support.])
            enable_python="no"
            not_found="$not_found python"
        fi
    fi
fi

if test "x$enable_python" = "xyes" ; then
    AC_SUBST(PYTHON_CFLAGS)
    AC_SUBST(PYTHON_LFLAGS)
    AC_DEFINE(PLUGIN_PYTHON)
fi

# ---------------------------------- ruby --------------------------------------

if test "x$enable_ruby" = "xyes" ; then
    enable_plugins="yes"

    AC_PATH_PROGS(RUBY, ruby ruby1.8 ruby1.9)
    if test -z $RUBY ; then
        AC_MSG_WARN([
*** Ruby must be installed on your system but ruby interpreter couldn't be found in path.
*** Please check that ruby is in path, or install it with your software package manager.
*** WeeChat will be built without Ruby support.])
        enable_ruby="no"
        not_found="$not_found ruby"
    else
        RUBY_INCLUDE=`$RUBY -rrbconfig -e "puts Config::CONFIG[['archdir']]"`
        AC_MSG_CHECKING(for Ruby header files)
        if test -r "$RUBY_INCLUDE/ruby.h"; then
            RUBY_CFLAGS="-I$RUBY_INCLUDE"
        else
            AC_MSG_WARN([
*** Ruby header files couldn't be found in your system.
*** Try to install them with your software package manager.
*** WeeChat will be built without Ruby support.])
            enable_ruby="no"
            not_found="$not_found ruby"
        fi
        AC_MSG_RESULT(found)
        RUBY_LFLAGS=`$RUBY -rrbconfig -e "puts Config::CONFIG[['LIBRUBYARG_SHARED']]"`
    fi
fi

if test "x$enable_ruby" = "xyes" ; then
    AC_SUBST(RUBY_CFLAGS)
    AC_SUBST(RUBY_LFLAGS)
    AC_DEFINE(PLUGIN_RUBY)
fi

# ---------------------------------- lua --------------------------------------

if test "x$enable_lua" = "xyes" ; then
    enable_plugins="yes"

    ac_save_CPPFLAGS="$CPPFLAGS"
    ac_save_CFLAGS="$CFLAGS"
    ac_save_LDFLAGS="$LDFLAGS"

    LUA_CFLAGS=""
    LUA_LFLAGS=""

    if test -n "$lua_inc"; then
       CFLAGS="$CFLAGS -I$lua_inc"
       CPPFLAGS="$CPPFLAGS -I$lua_inc"
    fi
    if test -n "$lua_lib"; then
       LDFLAGS="$LDFLAGS -L$lua_lib"
    fi
    
    if test "x$LUA_CFLAGS" = "x" -o "x$LUA_LFLAGS" = "x" ; then
        PKGCONFIG=""
        AC_CHECK_PROGS(PKGCONFIG, pkg-config)
        if test "x$PKGCONFIG" != "x"; then
	    AC_MSG_CHECKING(for Lua headers and librairies with pkg-config)
	    echo
	    for l in "$lua_suffix" "" "50" "5.0" "51" "5.1" ; do
	        pkgconfig_lua_found=`$PKGCONFIG --exists lua$l 2>/dev/null && $PKGCONFIG --exists lualib$l 2>/dev/null`
	        if test "x$?" = "x0" ; then
                    LUA_CFLAGS="$LUA_CFLAGS "`$PKGCONFIG --cflags lua$l`
                    LUA_CFLAGS="$LUA_CFLAGS "`$PKGCONFIG --cflags lualib$l`
                    LUA_LFLAGS="$LUA_LFLAGS "`$PKGCONFIG --libs lua$l`
                    LUA_LFLAGS="$LUA_LFLAGS "`$PKGCONFIG --libs lualib$l`
                    break
                fi
            done
        fi
    fi    

    if test "x$LUA_CFLAGS" = "x" -o "x$LUA_LFLAGS" = "x" ; then
        LUACONFIG=""
        AC_CHECK_PROGS(LUACONFIG, lua-config lua-config50 lua-config5.0 lua-config51 lua-config5.1)
        if test "x$LUACONFIG" != "x" ; then
            AC_MSG_CHECKING(for Lua headers and librairies with lua-config)
	    echo
            LUA_CFLAGS=`$LUACONFIG --include`
            LUA_LFLAGS=`$LUACONFIG --libs`
        fi
    fi

    if test "x$LUA_CFLAGS" = "x" -o "x$LUA_LFLAGS" = "x" ; then       
        AC_MSG_CHECKING(for Lua headers and librairies)
	echo
        AC_CHECK_HEADER(lua.h,ac_found_lua_header="yes",ac_found_lua_header="no")
        AC_CHECK_HEADER(lualib.h,ac_found_liblua_header="yes",ac_found_liblua_header="no")
        if test "x$ac_found_lua_header" = "xyes" -a "x$ac_found_liblua_header" = "xyes"; then
            LUA_CFLAGS="$CFLAGS"
        fi
        for l in "$lua_suffix" "" "50" "5.0" "51" "5.1" ; do
            AC_CHECK_LIB(lua$l,lua_call,ac_found_lua_lib="yes",ac_found_lua_lib="no")
            if test "x$ac_found_lua_lib" = "xyes" ; then
	        LUA_LFLAGS="$LDFLAGS -llua$l -lm"
		
		ac2_save_LDFLAGS="$LDFLAGS"
		LDFLAGS="$LDFLAGS -llua$l -lm"		

		if echo "$host_os" | grep "^linux" 1>/dev/null 2>&1 ; then
		   LDFLAGS="$LDFLAGS -ldl"
		fi

		AC_CHECK_LIB(lualib$l,luaL_openlib,ac_found_liblua_lib="yes",ac_found_liblua_lib="no")
		if test "x$ac_found_liblua_lib" = "xyes" ; then
		   LUA_LFLAGS="$LUA_LFLAGS -llualib$l"

		   if echo "$host_os" | grep "^linux" 1>/dev/null 2>&1 ; then
		      LUA_LFLAGS="$LUA_LFLAGS -ldl"
		   fi		   
		fi

		LDFLAGS="$ac2_save_LDFLAGS"
		break
	    fi
        done
    fi
    
    AC_MSG_CHECKING(for Lua compiling and linking)
    LUA_TEST=`LT=luatest.c ; echo "#include <lua.h>" > $LT;  echo "#include <lualib.h>" >> $LT; echo "int main() { luaopen_base((lua_State *)lua_open()); return 0; }" >> $LT ; $CC -Wall $LT -o $LT.out $LUA_CFLAGS $LUA_LFLAGS $CFLAGS $LDFLAGS 1>/dev/null 2>&1 ; echo $?; rm -f $LT $LT.out 1>/dev/null 2>&1`
    if test "x$LUA_TEST" != "x0" ; then
        AC_MSG_RESULT(no)
        AC_MSG_WARN([
*** Lua (>=5.0) headers and/or librairies couldn't be found in your system.
*** Try to install liblua, liblualib and liblua-dev with your software package manager.
*** WeeChat will be built without Lua support.])
        enable_lua="no"
        not_found="$not_found lua"
    else
        AC_MSG_RESULT(yes)
    fi

    CFLAGS="$ac_save_CFLAGS"
    CPPFLAGS="$ac_save_CPPFLAGS"
    LDFLAGS="$ac_save_LDFLAGS"
fi

if test "x$enable_lua" = "xyes" ; then
    AC_SUBST(LUA_CFLAGS)
    AC_SUBST(LUA_LFLAGS)
    AC_DEFINE(PLUGIN_LUA)
fi

# ------------------------------------------------------------------------------
#                                   aspell
# ------------------------------------------------------------------------------

if test "x$enable_aspell" = "xyes" ; then
    ASPELL_CFLAGS=""
    ASPELL_LFLAGS=""

    AC_CHECK_HEADER(aspell.h,ac_found_aspell_header="yes",ac_found_aspell_header="no")
    AC_CHECK_LIB(aspell,new_aspell_speller,ac_found_aspell_lib="yes",ac_found_aspell_lib="no")

    AC_MSG_CHECKING(for aspell headers and librairies)    
    if test "x$ac_found_aspell_header" = "xno" -o "x$ac_found_aspell_lib" = "xno" ; then
       AC_MSG_RESULT(no)
       AC_MSG_WARN([
*** Aspell headers and/or libraries couldn't be found in your system.
*** Try to install them with your software package manager.
*** WeeChat will be built without Aspell support.])
       enable_aspell="no"
       not_found="$not_found aspell"
    else
	AC_MSG_RESULT(yes)
	ASPELL_LFLAGS="$ASPELL_LFLAGS -laspell"
    fi
fi

if test "x$enable_aspell" = "xyes" ; then
    AC_SUBST(ASPELL_CFLAGS)
    AC_SUBST(ASPELL_LFLAGS)
    AC_DEFINE(PLUGIN_ASPELL)
fi

# ------------------------------------------------------------------------------
#                                dynamic loader
# ------------------------------------------------------------------------------

if test "x$enable_plugins" = "xyes" ; then
    AC_CHECK_FUNCS(dlopen, LIBDL_FOUND=yes, LIBDL_FOUND=no)
    if test "$LIBDL_FOUND" != "yes"; then
        AC_CHECK_LIB(dl, dlopen, [LIBDL_FOUND=yes; PLUGINS_LIBS=-ldl], LIBDL_FOUND=no)
    fi
    if test "$LIBDL_FOUND" = "yes"; then
        AC_DEFINE(PLUGINS)
        AC_SUBST(PLUGINS_LIBS)
    else
        AC_MSG_WARN([
*** "dl" library (dynamic library loader) couldn't be found in your system.
*** Try to install it with your software package manager or disable plugins.
*** WeeChat will be built without any plugin.])
        enable_plugins="no"
        enable_perl="no"
        enable_python="no"
        enable_ruby="no"
        enable_lua="no"
	enable_aspell="no"
        not_found="$not_found plugins"
    fi
fi

# ------------------------------------------------------------------------------
#                                   gnutls
# ------------------------------------------------------------------------------

if test "x$enable_gnutls" = "xyes" ; then
    found_gnutls="no"
    AM_PATH_LIBGNUTLS( 1.0.0, found_gnutls=yes, AC_MSG_WARN([[
*** libgnutls was not found. You may want to get it from ftp://ftp.gnutls.org/pub/gnutls/
*** WeeChat will be built without GnuTLS support.]]))
    if test "x$found_gnutls" = "xyes" ; then
        GNUTLS_CFLAGS=`libgnutls-config --cflags`
        GNUTLS_LFLAGS=`libgnutls-config --libs`
        AC_SUBST(GNUTLS_CFLAGS)
        AC_SUBST(GNUTLS_LFLAGS)
        AC_DEFINE(HAVE_GNUTLS)
    else
        enable_gnutls="no"
        not_found="$not_found gnutls"
    fi
fi

# ------------------------------------------------------------------------------
#                                   flock
# ------------------------------------------------------------------------------

enable_flock="no"
AC_CACHE_CHECK([for flock() support], ac_have_flock, [
AC_TRY_COMPILE(
[ #include <sys/file.h>       
],
[ flock(0, LOCK_SH); ],
[ ac_have_flock="yes" ],
[ ac_have_flock="no" ])])

if test "x$ac_have_flock" = "xyes"; then
   enable_flock="yes"
   AC_DEFINE(HAVE_FLOCK)
fi

# ------------------------------------------------------------------------------
#                                  backtrace
# ------------------------------------------------------------------------------

enable_backtrace="no"
if test "x$debug" != "x0" ; then
    AC_CACHE_CHECK([for execinfo.h and backtrace], ac_have_backtrace, [
        AC_TRY_COMPILE(
            [ #include <execinfo.h>       
            ],
            [ void *trace[128]; int n = backtrace(trace, 128); ],
            [ ac_have_backtrace="yes" ],
            [ ac_have_backtrace="no"  ])])
    if test "x$ac_have_backtrace" = "xyes"; then
        enable_backtrace="yes"
        AC_DEFINE(HAVE_BACKTRACE,1,[glibc backtrace function])
    fi
fi

# ------------------------------------------------------------------------------
#                               documentation
# ------------------------------------------------------------------------------

AC_MSG_CHECKING(for html/chunk.xsl)
DOC_XSL_PREFIX=""

if test -n "$doc_xsl_prefix"; then
    doc_xsl_prefix_path="$doc_xsl_prefix"
else
    doc_xsl_prefix_path="/usr/share/xml/docbook/xsl-stylesheets-1.69"
    doc_xsl_prefix_path="${doc_xsl_prefix_arr} /usr/share/xml/docbook/stylesheet/nwalsh"
fi

for p in $doc_xsl_prefix_path; do
    if test -f ${p}/html/chunk.xsl; then
        DOC_XSL_PREFIX="$p"
    fi
done

if test "x$DOC_XSL_PREFIX" == "x"; then
    AC_MSG_RESULT(no)
    enable_doc="no"
    AC_MSG_WARN([
*** Docbook XSL files not found
*** WeeChat will be built without documentation.
*** Try ./configure --with-doc-xsl-prefix=DIR if you have DIR/html/chunk.xsl file])
else
    AC_MSG_RESULT($DOC_XSL_PREFIX)
    AC_SUBST(DOC_XSL_PREFIX)
    enable_doc="yes"
fi

# ------------------------------------------------------------------------------
#                                general vars
# ------------------------------------------------------------------------------

if test "x$prefix" = "xNONE" ; then
   prefix="$ac_default_prefix"
fi

if test "x$exec_prefix" = "xNONE" ; then
   exec_prefix="$prefix"
fi

AC_DEFINE_UNQUOTED(PREFIX, "${prefix}")

WEECHAT_LIBDIR=`eval eval echo ${libdir}/weechat`
AC_DEFINE_UNQUOTED(WEECHAT_LIBDIR, "$WEECHAT_LIBDIR")

WEECHAT_SHAREDIR=`eval eval echo ${datadir}/weechat`
AC_DEFINE_UNQUOTED(WEECHAT_SHAREDIR, "$WEECHAT_SHAREDIR")

weechat_libdir=${libdir}/weechat
AC_SUBST(weechat_libdir)

COMMON_CFLAGS="-Wall -W"
AC_MSG_CHECKING([whether we have GNU assembler])
GAS=`as --version < /dev/null 2>/dev/null | grep GNU`
if test "$GAS"; then
    COMMON_CFLAGS="${COMMON_CFLAGS} -pipe"
    AC_MSG_RESULT(yes)
else
    AC_MSG_RESULT(no)
fi
 
CFLAGS=`echo $CFLAGS | sed s/-g//g`
if test "x$CFLAGS" = "x" ; then
    CFLAGS="-O2"
fi
if test "x$debug" = "x1" || test "x$debug" = "x2" ; then
    CFLAGS="$COMMON_CFLAGS $CFLAGS -g"
else
    CFLAGS="$COMMON_CFLAGS $CFLAGS"
fi

if test "x$debug" = "x2" ; then
    AC_DEFINE(DEBUG)
fi

LIBS="$LIBS $INTLLIBS"

case "$host_os" in
freebsd*)
        if test "x$enable_perl" = "xyes" -o "x$enable_python" = "xyes" ; then
	   CFLAGS="$CFLAGS -pthread"
        fi
        CFLAGS="$CFLAGS $CPPFLAGS"
        ;;
openbsd*)
        if test "x$enable_python" = "xyes" ; then
           CFLAGS="$CFLAGS -pthread"
        fi
        ;;
netbsd*)
        if test "x$enable_perl" = "xyes" -o "x$enable_python" = "xyes" ; then
	   CFLAGS="$CFLAGS -pthread"
        fi
        CFLAGS="$CFLAGS $CPPFLAGS"
	;;
gnu*)	
	if test "x$enable_plugins" = "xyes" ; then
	   LDFLAGS="$LDFLAGS -lpthread"
	fi
	;;
*)
        ;;
esac

# ------------------------------------------------------------------------------
#                                output Makefiles
# ------------------------------------------------------------------------------

AM_CONDITIONAL(GUI_NCURSES,    test "$enable_ncurses" = "yes")
AM_CONDITIONAL(GUI_WXWIDGETS,  test "$enable_wxwidgets" = "yes")
AM_CONDITIONAL(GUI_GTK,        test "$enable_gtk" = "yes")
AM_CONDITIONAL(GUI_QT,         test "$enable_qt" = "yes")
AM_CONDITIONAL(PLUGINS,        test "$enable_plugins" = "yes")
AM_CONDITIONAL(PLUGIN_PERL,    test "$enable_perl" = "yes")
AM_CONDITIONAL(PLUGIN_PYTHON,  test "$enable_python" = "yes")
AM_CONDITIONAL(PLUGIN_RUBY,    test "$enable_ruby" = "yes")
AM_CONDITIONAL(PLUGIN_LUA,     test "$enable_lua" = "yes")
AM_CONDITIONAL(PLUGIN_ASPELL,  test "$enable_aspell" = "yes")
AM_CONDITIONAL(HAVE_GNUTLS,    test "$enable_gnutls" = "yes")
AM_CONDITIONAL(HAVE_FLOCK,     test "$enable_flock" = "yes")

AC_OUTPUT([Makefile
           doc/Makefile
           doc/en/Makefile
           doc/fr/Makefile
           doc/de/Makefile
           doc/ru/Makefile
           doc/pl/Makefile
           doc/cs/Makefile
           src/Makefile
           src/common/Makefile
           src/irc/Makefile
           src/plugins/Makefile
           src/plugins/scripts/Makefile
           src/plugins/scripts/perl/Makefile
           src/plugins/scripts/python/Makefile
           src/plugins/scripts/ruby/Makefile
           src/plugins/scripts/lua/Makefile
	   src/plugins/aspell/Makefile
           src/gui/Makefile
           src/gui/curses/Makefile
           src/gui/wxwidgets/Makefile
           src/gui/gtk/Makefile
           src/gui/qt/Makefile
           intl/Makefile
           po/Makefile.in])

# ------------------------------------------------------------------------------
#                                  end message
# ------------------------------------------------------------------------------

listgui=""
if test "x$enable_ncurses" = "xyes" ; then
    listgui="$listgui ncurses"
fi
if test "x$enable_wxwidgets" = "xyes"; then
   listgui="$listgui WxWidgets"
fi
if test "x$enable_gtk" = "xyes" ; then
    listgui="$listgui Gtk"
fi
if test "x$enable_qt" = "xyes" ; then
    listgui="$listgui Qt"
fi

if test "x$listgui" = "x" ; then
    AC_MSG_ERROR([
*** No interface specified...
*** Please enable at least ncurses, WxWidgets, Gtk or Qt.])
fi

if test "x$not_found" != "x" ; then
    echo ""
    echo "Following components were asked but not found, they will not be built:"
    echo "$not_found"
fi

msg_debug_compiler="no"
msg_debug_verbose="no"
if test "x$debug" = "x1" || test "x$debug" = "x2" ; then
    msg_debug_compiler="yes"
fi
if test "x$debug" = "x2" ; then
    msg_debug_verbose="yes"
fi

echo ""
echo "Interfaces........................ :$listgui"
echo "Build with GNUtls support......... : $enable_gnutls"
echo "Build with flock support.......... : $enable_flock"
echo "Build with Plugin support......... : $enable_plugins"
echo "              Perl plugin......... : $enable_perl"
echo "              Python plugin....... : $enable_python"
echo "              Ruby plugin......... : $enable_ruby"
echo "              Lua plugin.......... : $enable_lua"
echo "              Aspell plugin....... : $enable_aspell"
echo "Compile with debug info........... : $msg_debug_compiler"
echo "              Backtrace........... : $enable_backtrace"
echo "Build doc..........................: $enable_doc"
echo "Print debugging messages.......... : $msg_debug_verbose"
echo ""
eval echo "WeeChat will be installed in $bindir."
echo ""
echo "configure complete, now type 'make' to build WeeChat $VERSION"
echo ""