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Diffstat (limited to 'm4/libotr.m4')
| -rw-r--r-- | m4/libotr.m4 | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/m4/libotr.m4 b/m4/libotr.m4 new file mode 100644 index 00000000..80b25f86 --- /dev/null +++ b/m4/libotr.m4 @@ -0,0 +1,134 @@ +dnl +dnl Off-the-Record Messaging library +dnl Copyright (C) 2004-2007 Ian Goldberg, Chris Alexander, Nikita Borisov +dnl <otr@cypherpunks.ca> +dnl +dnl This library is free software; you can redistribute it and/or +dnl modify it under the terms of version 2.1 of the GNU Lesser General +dnl Public License as published by the Free Software Foundation. +dnl +dnl This library is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +dnl Lesser General Public License for more details. +dnl +dnl You should have received a copy of the GNU Lesser General Public +dnl License along with this library; if not, write to the Free Software +dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +dnl + +dnl AM_PATH_LIBOTR([MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]]) +dnl Test for libotr, and define LIBOTR_CFLAGS and LIBOTR_LIBS as appropriate. +dnl enables arguments --with-libotr-prefix= +dnl --with-libotr-inc-prefix= +dnl +dnl You must already have found libgcrypt with AM_PATH_LIBGCRYPT +dnl +dnl Adapted from alsa.m4, originally by +dnl Richard Boulton <richard-alsa@tartarus.org> +dnl Christopher Lansdown <lansdoct@cs.alfred.edu> +dnl Jaroslav Kysela <perex@suse.cz> + +AC_DEFUN([AM_PATH_LIBOTR], +[dnl Save the original CFLAGS, LDFLAGS, and LIBS +libotr_save_CFLAGS="$CFLAGS" +libotr_save_LDFLAGS="$LDFLAGS" +libotr_save_LIBS="$LIBS" +libotr_found=yes + +dnl +dnl Get the cflags and libraries for libotr +dnl +AC_ARG_WITH(libotr-prefix, +[ --with-libotr-prefix=PFX Prefix where libotr is installed(optional)], +[libotr_prefix="$withval"], [libotr_prefix=""]) + +AC_ARG_WITH(libotr-inc-prefix, +[ --with-libotr-inc-prefix=PFX Prefix where libotr includes are (optional)], +[libotr_inc_prefix="$withval"], [libotr_inc_prefix=""]) + +dnl Add any special include directories +AC_MSG_CHECKING(for libotr CFLAGS) +if test "$libotr_inc_prefix" != "" ; then + LIBOTR_CFLAGS="$LIBOTR_CFLAGS -I$libotr_inc_prefix" + CFLAGS="$CFLAGS $LIBOTR_CFLAGS" +fi +AC_MSG_RESULT($LIBOTR_CFLAGS) + +dnl add any special lib dirs +AC_MSG_CHECKING(for libotr LIBS) +if test "$libotr_prefix" != "" ; then + LIBOTR_LIBS="$LIBOTR_LIBS -L$libotr_prefix" + LDFLAGS="$LDFLAGS $LIBOTR_LIBS" +fi + +dnl add the libotr library +LIBOTR_LIBS="$LIBOTR_LIBS -lotr" +LIBS="$LIBOTR_LIBS $LIBS" +AC_MSG_RESULT($LIBOTR_LIBS) + +dnl Check for a working version of libotr that is of the right version. +min_libotr_version=ifelse([$1], ,3.0.0,$1) +no_libotr="" + libotr_min_major_version=`echo $min_libotr_version | \ + sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` + libotr_min_minor_version=`echo $min_libotr_version | \ + sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` + libotr_min_sub_version=`echo $min_libotr_version | \ + sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'` +AC_MSG_CHECKING(for libotr headers version $libotr_min_major_version.x >= $min_libotr_version) + +AC_LANG_SAVE +AC_LANG_C +AC_TRY_COMPILE([ +#include <stdlib.h> +#include <libotr/version.h> +], [ +# if(OTRL_VERSION_MAJOR != $libotr_min_major_version) +# error not present +# else + +# if(OTRL_VERSION_MINOR > $libotr_min_minor_version) + exit(0); +# else +# if(OTRL_VERSION_MINOR < $libotr_min_minor_version) +# error not present +# endif + +# if(OTRL_VERSION_SUB < $libotr_min_sub_version) +# error not present +# endif +# endif +# endif +exit(0); +], + [AC_MSG_RESULT(found.)], + [AC_MSG_RESULT(not present.) + ifelse([$3], , [AC_MSG_ERROR(Sufficiently new version of libotr not found.)]) + libotr_found=no] +) +AC_LANG_RESTORE + +dnl Now that we know that we have the right version, let's see if we have the library and not just the headers. +AC_CHECK_LIB([otr], [otrl_message_receiving],, + [ifelse([$3], , [AC_MSG_ERROR(No linkable libotr was found.)]) + libotr_found=no], + $LIBGCRYPT_LIBS +) + +LDFLAGS="$libotr_save_LDFLAGS" +LIBS="$libotr_save_LIBS" + +if test "x$libotr_found" = "xyes" ; then + ifelse([$2], , :, [$2]) +else + LIBOTR_CFLAGS="" + LIBOTR_LIBS="" + ifelse([$3], , :, [$3]) +fi + +dnl That should be it. Now just export our symbols: +AC_SUBST(LIBOTR_CFLAGS) +AC_SUBST(LIBOTR_LIBS) +]) + |