2 files changed, 175 insertions, 1 deletions

diff --git a/Makefile.am b/Makefile.am
index 205da9d..a19e755 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,7 @@
 AUTOMAKE_OPTIONS = foreign dist-bzip2
 
 EXTRA_DIST = m4/outoforder.m4 m4/apache.m4 \
-                m4/libgnutls.m4 m4/apr_memcache.m4 \
+                libgnutls.m4 m4/apr_memcache.m4 \
                 m4/apache_test.m4 m4/lua.m4 \
                 include/mod_gnutls.h.in \
                 README README.ENV NEWS \
diff --git a/libgnutls.m4 b/libgnutls.m4
new file mode 100644
index 0000000..dd86431
--- /dev/null
+++ b/libgnutls.m4
@@ -0,0 +1,174 @@
+dnl Autoconf macros for libgnutls-extra
+dnl $id$
+
+# Modified for LIBGNUTLS_EXTRA -- nmav
+# Configure paths for LIBGCRYPT
+# Shamelessly stolen from the one of XDELTA by Owen Taylor
+# Werner Koch   99-12-09
+
+dnl AM_PATH_LIBGNUTLS_EXTRA([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
+dnl Test for libgnutls-extra, and define LIBGNUTLS_EXTRA_CFLAGS and LIBGNUTLS_EXTRA_LIBS
+dnl
+AC_DEFUN([AM_PATH_LIBGNUTLS_EXTRA],
+[dnl
+dnl Get the cflags and libraries from the libgnutls-extra-config script
+dnl
+AC_ARG_WITH(libgnutls-extra-prefix,
+          [  --with-libgnutls-extra-prefix=PFX   Prefix where libgnutls-extra is installed (optional)],
+          libgnutls_extra_config_prefix="$withval", libgnutls_extra_config_prefix="")
+
+  if test x$libgnutls_extra_config_prefix != x ; then
+     if test x${LIBGNUTLS_EXTRA_CONFIG+set} != xset ; then
+        LIBGNUTLS_EXTRA_CONFIG=$libgnutls_extra_config_prefix/bin/libgnutls-extra-config
+     fi
+  fi
+
+  AC_PATH_PROG(LIBGNUTLS_EXTRA_CONFIG, libgnutls-extra-config, no)
+  min_libgnutls_version=ifelse([$1], ,0.1.0,$1)
+  AC_MSG_CHECKING(for libgnutls - version >= $min_libgnutls_version)
+  no_libgnutls=""
+  if test "$LIBGNUTLS_EXTRA_CONFIG" = "no" ; then
+    no_libgnutls=yes
+  else
+    LIBGNUTLS_EXTRA_CFLAGS=`$LIBGNUTLS_EXTRA_CONFIG $libgnutls_extra_config_args --cflags`
+    LIBGNUTLS_EXTRA_LIBS=`$LIBGNUTLS_EXTRA_CONFIG $libgnutls_extra_config_args --libs`
+    libgnutls_extra_config_version=`$LIBGNUTLS_EXTRA_CONFIG $libgnutls_extra_config_args --version`
+
+
+      ac_save_CFLAGS="$CFLAGS"
+      ac_save_LIBS="$LIBS"
+      CFLAGS="$CFLAGS $LIBGNUTLS_EXTRA_CFLAGS"
+      LIBS="$LIBS $LIBGNUTLS_EXTRA_LIBS"
+dnl
+dnl Now check if the installed libgnutls is sufficiently new. Also sanity
+dnl checks the results of libgnutls-extra-config to some extent
+dnl
+      rm -f conf.libgnutlstest
+      AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gnutls/extra.h>
+
+int
+main ()
+{
+    system ("touch conf.libgnutlstest");
+
+    if( strcmp( gnutls_extra_check_version(NULL), "$libgnutls_extra_config_version" ) )
+    {
+      printf("\n*** 'libgnutls-extra-config --version' returned %s, but LIBGNUTLS_EXTRA (%s)\n",
+             "$libgnutls_extra_config_version", gnutls_extra_check_version(NULL) );
+      printf("*** was found! If libgnutls-extra-config was correct, then it is best\n");
+      printf("*** to remove the old version of LIBGNUTLS_EXTRA. You may also be able to fix the error\n");
+      printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
+      printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
+      printf("*** required on your system.\n");
+      printf("*** If libgnutls-extra-config was wrong, set the environment variable LIBGNUTLS_EXTRA_CONFIG\n");
+      printf("*** to point to the correct copy of libgnutls-extra-config, and remove the file config.cache\n");
+      printf("*** before re-running configure\n");
+    }
+    else if ( strcmp(gnutls_extra_check_version(NULL), LIBGNUTLS_EXTRA_VERSION ) )
+    {
+      printf("\n*** LIBGNUTLS_EXTRA header file (version %s) does not match\n", LIBGNUTLS_EXTRA_VERSION);
+      printf("*** library (version %s). This is may be due to a different version of gnutls\n", gnutls_extra_check_version(NULL) );
+      printf("*** and gnutls-extra.\n");
+    }
+    else
+    {
+      if ( gnutls_extra_check_version( "$min_libgnutls_version" ) )
+      {
+        return 0;
+      }
+     else
+      {
+        printf("no\n*** An old version of LIBGNUTLS_EXTRA (%s) was found.\n",
+                gnutls_extra_check_version(NULL) );
+        printf("*** You need a version of LIBGNUTLS_EXTRA newer than %s. The latest version of\n",
+               "$min_libgnutls_version" );
+        printf("*** LIBGNUTLS_EXTRA is always available from ftp://gnutls.hellug.gr/pub/gnutls.\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 libgnutls-extra-config shell script is\n");
+        printf("*** being found. The easiest way to fix this is to remove the old version\n");
+        printf("*** of LIBGNUTLS_EXTRA, but you can also set the LIBGNUTLS_EXTRA_CONFIG environment to point to the\n");
+        printf("*** correct copy of libgnutls-extra-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_libgnutls=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+  fi
+
+  if test "x$no_libgnutls" = x ; then
+     AC_MSG_RESULT(yes)
+     ifelse([$2], , :, [$2])
+  else
+     if test -f conf.libgnutlstest ; then
+        :
+     else
+        AC_MSG_RESULT(no)
+     fi
+     if test "$LIBGNUTLS_EXTRA_CONFIG" = "no" ; then
+       echo "*** The libgnutls-extra-config script installed by LIBGNUTLS_EXTRA could not be found"
+       echo "*** If LIBGNUTLS_EXTRA was installed in PREFIX, make sure PREFIX/bin is in"
+       echo "*** your path, or set the LIBGNUTLS_EXTRA_CONFIG environment variable to the"
+       echo "*** full path to libgnutls-extra-config."
+     else
+       if test -f conf.libgnutlstest ; then
+        :
+       else
+          echo "*** Could not run libgnutls test program, checking why..."
+          CFLAGS="$CFLAGS $LIBGNUTLS_EXTRA_CFLAGS"
+          LIBS="$LIBS $LIBGNUTLS_EXTRA_LIBS"
+          AC_TRY_LINK([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <gnutls/extra.h>
+],      [ return !!gnutls_extra_check_version(NULL); ],
+        [ echo "*** The test program compiled, but did not run. This usually means"
+          echo "*** that the run-time linker is not finding LIBGNUTLS_EXTRA or finding the wrong"
+          echo "*** version of LIBGNUTLS_EXTRA. If it is not finding LIBGNUTLS_EXTRA, 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 LIBGNUTLS_EXTRA was incorrectly installed"
+          echo "*** or that you have moved LIBGNUTLS_EXTRA since it was installed. In the latter case, you"
+          echo "*** may want to edit the libgnutls-extra-config script: $LIBGNUTLS_EXTRA_CONFIG" ])
+          CFLAGS="$ac_save_CFLAGS"
+          LIBS="$ac_save_LIBS"
+       fi
+     fi
+     LIBGNUTLS_EXTRA_CFLAGS=""
+     LIBGNUTLS_EXTRA_LIBS=""
+     ifelse([$3], , :, [$3])
+  fi
+  rm -f conf.libgnutlstest
+  AC_SUBST(LIBGNUTLS_EXTRA_CFLAGS)
+  AC_SUBST(LIBGNUTLS_EXTRA_LIBS)
+  
+  LIBGNUTLS_LIBS=$LIBGNUTLS_EXTRA_LIBS
+  LIBGNUTLS_CFLAGS=$LIBGNUTLS_EXTRA_CFLAGS
+  LIBGNUTLS_VERSION=`$LIBGNUTLS_EXTRA_CONFIG $libgnutls_extra_config_args --version`
+  LIBGNUTLS_PREFIX="`$LIBGNUTLS_EXTRA_CONFIG $libgnutls_extra_config_args --prefix`"
+  GNUTLS_CERTTOOL="${LIBGNUTLS_PREFIX}/bin/certtool"
+  
+  AC_SUBST(LIBGNUTLS_CFLAGS)
+  AC_SUBST(LIBGNUTLS_LIBS)
+  AC_SUBST(LIBGNUTLS_VERSION)
+  AC_SUBST(LIBGNUTLS_PREFIX)
+  AC_SUBST(LIBGNUTLS_CERTTOOL)
+  
+])
+
+dnl *-*wedit:notab*-*  Please keep this as the last line.