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dnl Autoconf macros for libgnutls
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# Modified for mutt 20050210 Brendan Cully
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# Modified for LIBGNUTLS -- nmav
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# Configure paths for LIBGCRYPT
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# Shamelessly stolen from the one of XDELTA by Owen Taylor
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dnl MUTT_AM_PATH_GNUTLS([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
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dnl Test for libgnutls, and define LIBGNUTLS_CFLAGS and LIBGNUTLS_LIBS
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AC_DEFUN([MUTT_AM_PATH_GNUTLS],
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dnl Get the cflags and libraries from the libgnutls-config script
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libgnutls_config_prefix=$1
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min_libgnutls_version=0.1.0
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if test x$libgnutls_config_prefix != x ; then
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if test x${LIBGNUTLS_CONFIG+set} != xset ; then
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LIBGNUTLS_CONFIG=$libgnutls_config_prefix/bin/libgnutls-config
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AC_PATH_PROG(LIBGNUTLS_CONFIG, libgnutls-config, no)
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AC_MSG_CHECKING(for libgnutls - version >= $min_libgnutls_version)
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if test "$LIBGNUTLS_CONFIG" = "no" ; then
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LIBGNUTLS_CFLAGS=`$LIBGNUTLS_CONFIG $libgnutls_config_args --cflags`
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LIBGNUTLS_LIBS=`$LIBGNUTLS_CONFIG $libgnutls_config_args --libs`
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libgnutls_config_version=`$LIBGNUTLS_CONFIG $libgnutls_config_args --version`
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ac_save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
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LIBS="$LIBS $LIBGNUTLS_LIBS"
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dnl Now check if the installed libgnutls is sufficiently new. Also sanity
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dnl checks the results of libgnutls-config to some extent
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rm -f conf.libgnutlstest
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#include <gnutls/gnutls.h>
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system ("touch conf.libgnutlstest");
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if( strcmp( gnutls_check_version(NULL), "$libgnutls_config_version" ) )
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printf("\n*** 'libgnutls-config --version' returned %s, but LIBGNUTLS (%s)\n",
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"$libgnutls_config_version", gnutls_check_version(NULL) );
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printf("*** was found! If libgnutls-config was correct, then it is best\n");
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printf("*** to remove the old version of LIBGNUTLS. You may also be able to fix the error\n");
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printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
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printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
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printf("*** required on your system.\n");
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printf("*** If libgnutls-config was wrong, set the environment variable LIBGNUTLS_CONFIG\n");
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printf("*** to point to the correct copy of libgnutls-config, and remove the file config.cache\n");
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printf("*** before re-running configure\n");
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else if ( strcmp(gnutls_check_version(NULL), LIBGNUTLS_VERSION ) )
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printf("\n*** LIBGNUTLS header file (version %s) does not match\n", LIBGNUTLS_VERSION);
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printf("*** library (version %s)\n", gnutls_check_version(NULL) );
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if ( gnutls_check_version( "$min_libgnutls_version" ) )
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printf("no\n*** An old version of LIBGNUTLS (%s) was found.\n",
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gnutls_check_version(NULL) );
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printf("*** You need a version of LIBGNUTLS newer than %s. The latest version of\n",
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"$min_libgnutls_version" );
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printf("*** LIBGNUTLS is always available from ftp://gnutls.hellug.gr/pub/gnutls.\n");
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printf("*** If you have already installed a sufficiently new version, this error\n");
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printf("*** probably means that the wrong copy of the libgnutls-config shell script is\n");
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printf("*** being found. The easiest way to fix this is to remove the old version\n");
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printf("*** of LIBGNUTLS, but you can also set the LIBGNUTLS_CONFIG environment to point to the\n");
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printf("*** correct copy of libgnutls-config. (In this case, you will have to\n");
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printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
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printf("*** so that the correct libraries are found at run-time))\n");
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],, no_libgnutls=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
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CFLAGS="$ac_save_CFLAGS"
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if test "x$no_libgnutls" = x ; then
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dnl some openssl compatibility code was moved in gnutls 1.2
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AC_CHECK_HEADERS([gnutls/openssl.h])
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ifelse([$2], , :, [$2])
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if test -f conf.libgnutlstest ; then
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if test "$LIBGNUTLS_CONFIG" = "no" ; then
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echo "*** The libgnutls-config script installed by LIBGNUTLS could not be found"
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echo "*** If LIBGNUTLS was installed in PREFIX, make sure PREFIX/bin is in"
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echo "*** your path, or set the LIBGNUTLS_CONFIG environment variable to the"
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echo "*** full path to libgnutls-config."
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if test -f conf.libgnutlstest ; then
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echo "*** Could not run libgnutls test program, checking why..."
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CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
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LIBS="$LIBS $LIBGNUTLS_LIBS"
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#include <gnutls/gnutls.h>
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], [ return !!gnutls_check_version(NULL); ],
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[ echo "*** The test program compiled, but did not run. This usually means"
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echo "*** that the run-time linker is not finding LIBGNUTLS or finding the wrong"
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echo "*** version of LIBGNUTLS. If it is not finding LIBGNUTLS, you'll need to set your"
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echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
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echo "*** to the installed location Also, make sure you have run ldconfig if that"
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echo "*** is required on your system"
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echo "*** If you have an old version installed, it is best to remove it, although"
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echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
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[ echo "*** The test program failed to compile or link. See the file config.log for the"
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echo "*** exact error that occured. This usually means LIBGNUTLS was incorrectly installed"
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echo "*** or that you have moved LIBGNUTLS since it was installed. In the latter case, you"
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echo "*** may want to edit the libgnutls-config script: $LIBGNUTLS_CONFIG" ])
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CFLAGS="$ac_save_CFLAGS"
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ifelse([$3], , :, [$3])
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rm -f conf.libgnutlstest
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AC_SUBST(LIBGNUTLS_CFLAGS)
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AC_SUBST(LIBGNUTLS_LIBS)
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dnl *-*wedit:notab*-* Please keep this as the last line.
added
removed
m4/libgnutls.m4
