m4/lib-prelude.m4
f4265a5a
 dnl Autoconf macros for libprelude
 dnl $id$
 
 # Modified for LIBPRELUDE -- Yoann Vandoorselaere
 # Modified for LIBGNUTLS -- nmav
 # Configure paths for LIBGCRYPT
 # Shamelessly stolen from the one of XDELTA by Owen Taylor
 # Werner Koch   99-12-09
 
 dnl AM_PATH_LIBPRELUDE([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]], THREAD_SUPPORT)
 dnl Test for libprelude, and define LIBPRELUDE_PREFIX, LIBPRELUDE_CFLAGS, LIBPRELUDE_PTHREAD_CFLAGS,
 dnl LIBPRELUDE_LDFLAGS, and LIBPRELUDE_LIBS
 dnl
 AC_DEFUN([AM_PATH_LIBPRELUDE],
 [dnl
 dnl Get the cflags and libraries from the libprelude-config script
 dnl
 AC_ARG_WITH(libprelude-prefix, AC_HELP_STRING(--with-libprelude-prefix=PFX,
             Prefix where libprelude is installed (optional)),
             libprelude_config_prefix="$withval", libprelude_config_prefix="")
 
   if test x$libprelude_config_prefix != x ; then
      if test x${LIBPRELUDE_CONFIG+set} != xset ; then
         LIBPRELUDE_CONFIG=$libprelude_config_prefix/bin/libprelude-config
      fi
   fi
 
   AC_PATH_PROG(LIBPRELUDE_CONFIG, libprelude-config, no)
   if test "$LIBPRELUDE_CONFIG" != "no"; then
 	if $($LIBPRELUDE_CONFIG --thread > /dev/null 2>&1); then
 		LIBPRELUDE_PTHREAD_CFLAGS=`$LIBPRELUDE_CONFIG --thread --cflags`
 
 		if test x$4 = xtrue || test x$4 = xyes; then
 			libprelude_config_args="--thread"
 		else
 			libprelude_config_args="--no-thread"
 		fi
 	else
 		LIBPRELUDE_PTHREAD_CFLAGS=`$LIBPRELUDE_CONFIG --pthread-cflags`
 	fi
   fi
 
   min_libprelude_version=ifelse([$1], ,0.1.0,$1)
   AC_MSG_CHECKING(for libprelude - version >= $min_libprelude_version)
   no_libprelude=""
   if test "$LIBPRELUDE_CONFIG" = "no" ; then
     no_libprelude=yes
   else
     LIBPRELUDE_CFLAGS=`$LIBPRELUDE_CONFIG $libprelude_config_args --cflags`
     LIBPRELUDE_LDFLAGS=`$LIBPRELUDE_CONFIG $libprelude_config_args --ldflags`
     LIBPRELUDE_LIBS=`$LIBPRELUDE_CONFIG $libprelude_config_args --libs`
     LIBPRELUDE_PREFIX=`$LIBPRELUDE_CONFIG $libprelude_config_args --prefix`
     LIBPRELUDE_CONFIG_PREFIX=`$LIBPRELUDE_CONFIG $libprelude_config_args --config-prefix`
     libprelude_config_version=`$LIBPRELUDE_CONFIG $libprelude_config_args --version`
 
 
       ac_save_CFLAGS="$CFLAGS"
       ac_save_LDFLAGS="$LDFLAGS"
       ac_save_LIBS="$LIBS"
       CFLAGS="$CFLAGS $LIBPRELUDE_CFLAGS"
       LDFLAGS="$LDFLAGS $LIBPRELUDE_LDFLAGS"
       LIBS="$LIBS $LIBPRELUDE_LIBS"
 dnl
 dnl Now check if the installed libprelude is sufficiently new. Also sanity
 dnl checks the results of libprelude-config to some extent
 dnl
       rm -f conf.libpreludetest
       AC_TRY_RUN([
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <libprelude/prelude.h>
 
 int
 main ()
 {
     system ("touch conf.libpreludetest");
 
     if( strcmp( prelude_check_version(NULL), "$libprelude_config_version" ) )
     {
       printf("\n*** 'libprelude-config --version' returned %s, but LIBPRELUDE (%s)\n",
              "$libprelude_config_version", prelude_check_version(NULL) );
       printf("*** was found! If libprelude-config was correct, then it is best\n");
       printf("*** to remove the old version of LIBPRELUDE. You may also be able to fix the error\n");
       printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
       printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
       printf("*** required on your system.\n");
       printf("*** If libprelude-config was wrong, set the environment variable LIBPRELUDE_CONFIG\n");
       printf("*** to point to the correct copy of libprelude-config, and remove the file config.cache\n");
       printf("*** before re-running configure\n");
     }
     else if ( strcmp(prelude_check_version(NULL), LIBPRELUDE_VERSION ) ) {
         printf("\n*** LIBPRELUDE header file (version %s) does not match\n", LIBPRELUDE_VERSION);
         printf("*** library (version %s)\n", prelude_check_version(NULL) );
     }
     else {
       if ( prelude_check_version( "$min_libprelude_version" ) )
         return 0;
       else {
         printf("no\n*** An old version of LIBPRELUDE (%s) was found.\n",
                 prelude_check_version(NULL) );
         printf("*** You need a version of LIBPRELUDE newer than %s. The latest version of\n",
                "$min_libprelude_version" );
         printf("*** LIBPRELUDE is always available from http://www.prelude-ids.com/development/download/\n");
         printf("*** \n");
         printf("*** If you have already installed a sufficiently new version, this error\n");
         printf("*** probably means that the wrong copy of the libprelude-config shell script is\n");
         printf("*** being found. The easiest way to fix this is to remove the old version\n");
         printf("*** of LIBPRELUDE, but you can also set the LIBPRELUDE_CONFIG environment to point to the\n");
         printf("*** correct copy of libprelude-config. (In this case, you will have to\n");
         printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
         printf("*** so that the correct libraries are found at run-time))\n");
       }
     }
     return 1;
 }
 ],, no_libprelude=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
        CFLAGS="$ac_save_CFLAGS"
        LIBS="$ac_save_LIBS"
        LDFLAGS="$ac_save_LDFLAGS"
   fi
 
   if test "x$no_libprelude" = x ; then
      AC_MSG_RESULT(yes)
      ifelse([$2], , :, [$2])
   else
      if test -f conf.libpreludetest ; then
         :
      else
         AC_MSG_RESULT(no)
      fi
      if test "$LIBPRELUDE_CONFIG" = "no" ; then
        echo "*** The libprelude-config script installed by LIBPRELUDE could not be found"
        echo "*** If LIBPRELUDE was installed in PREFIX, make sure PREFIX/bin is in"
        echo "*** your path, or set the LIBPRELUDE_CONFIG environment variable to the"
        echo "*** full path to libprelude-config."
      else
        if test -f conf.libpreludetest ; then
         :
        else
           echo "*** Could not run libprelude test program, checking why..."
           CFLAGS="$CFLAGS $LIBPRELUDE_CFLAGS"
           LDFLAGS="$LDFLAGS $LIBPRELUDE_LDFLAGS"
           LIBS="$LIBS $LIBPRELUDE_LIBS"
           AC_TRY_LINK([
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <libprelude/prelude.h>
 ],      [ return !!prelude_check_version(NULL); ],
         [ echo "*** The test program compiled, but did not run. This usually means"
           echo "*** that the run-time linker is not finding LIBPRELUDE or finding the wrong"
           echo "*** version of LIBPRELUDE. If it is not finding LIBPRELUDE, you'll need to set your"
           echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
           echo "*** to the installed location  Also, make sure you have run ldconfig if that"
           echo "*** is required on your system"
           echo "***"
           echo "*** If you have an old version installed, it is best to remove it, although"
           echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
           echo "***" ],
         [ echo "*** The test program failed to compile or link. See the file config.log for the"
           echo "*** exact error that occured. This usually means LIBPRELUDE was incorrectly installed"
           echo "*** or that you have moved LIBPRELUDE since it was installed. In the latter case, you"
           echo "*** may want to edit the libprelude-config script: $LIBPRELUDE_CONFIG" ])
           CFLAGS="$ac_save_CFLAGS"
           LDFLAGS="$ac_save_LDFLAGS"
           LIBS="$ac_save_LIBS"
        fi
      fi
      LIBPRELUDE_CFLAGS=""
      LIBPRELUDE_LDFLAGS=""
      LIBPRELUDE_LIBS=""
      ifelse([$3], , :, [$3])
   fi
   rm -f conf.libpreludetest
   AC_SUBST(LIBPRELUDE_CFLAGS)
   AC_SUBST(LIBPRELUDE_PTHREAD_CFLAGS)
   AC_SUBST(LIBPRELUDE_LDFLAGS)
   AC_SUBST(LIBPRELUDE_LIBS)
   AC_SUBST(LIBPRELUDE_PREFIX)
   AC_SUBST(LIBPRELUDE_CONFIG_PREFIX)
 
   m4_ifdef([LT_INIT],
            [AC_DEFINE([PRELUDE_APPLICATION_USE_LIBTOOL2], [], [Define whether application use libtool >= 2.0])],
            [])
 
 ])
 
 dnl *-*wedit:notab*-*  Please keep this as the last line.