Added libhnj.m4 to allow Go to compile. Hope this is not baaad. please, let me know...

svn path=/trunk/; revision=1019

diff --git a/macros/libhnj.m4 b/macros/libhnj.m4
new file mode 100644 (file)
index 0000000..8f17d14
--- /dev/null
+++ b/macros/libhnj.m4
@@ -0,0 +1,165 @@
+# Configure paths for LIBHNJ
+# Chris Lahey  99-2-5
+# stolen from Manish Singh again
+# stolen back from Frank Belew
+# stolen from Manish Singh
+# Shamelessly stolen from Owen Taylor
+
+dnl AM_PATH_LIBHNJ([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for LIBHNJ, and define LIBHNJ_CFLAGS and LIBHNJ_LIBS
+dnl
+AC_DEFUN(AM_PATH_LIBHNJ,
+[dnl 
+dnl Get the cflags and libraries from the libhnj-config script
+dnl
+AC_ARG_WITH(libhnj-prefix,[  --with-libhnj-prefix=PFX   Prefix where LIBHNJ is installed (optional)],
+            libhnj_prefix="$withval", libhnj_prefix="")
+AC_ARG_WITH(libhnj-exec-prefix,[  --with-libhnj-exec-prefix=PFX Exec prefix where LIBHNJ is installed (optional)],
+            libhnj_exec_prefix="$withval", libhnj_exec_prefix="")
+AC_ARG_ENABLE(libhnjtest, [  --disable-libhnjtest       Do not try to compile and run a test LIBHNJ program],
+                   , enable_libhnjtest=yes)
+
+  if test x$libhnj_exec_prefix != x ; then
+     libhnj_args="$libhnj_args --exec-prefix=$libhnj_exec_prefix"
+     if test x${LIBHNJ_CONFIG+set} != xset ; then
+        LIBHNJ_CONFIG=$libhnj_exec_prefix/bin/libhnj-config
+     fi
+  fi
+  if test x$libhnj_prefix != x ; then
+     libhnj_args="$libhnj_args --prefix=$libhnj_prefix"
+     if test x${LIBHNJ_CONFIG+set} != xset ; then
+        LIBHNJ_CONFIG=$libhnj_prefix/bin/libhnj-config
+     fi
+  fi
+
+  AC_PATH_PROG(LIBHNJ_CONFIG, libhnj-config, no)
+  min_libhnj_version=ifelse([$1], ,0.1.0,$1)
+  AC_MSG_CHECKING(for LIBHNJ - version >= $min_libhnj_version)
+  no_libhnj=""
+  if test "$LIBHNJ_CONFIG" = "no" ; then
+    no_libhnj=yes
+  else
+    LIBHNJ_CFLAGS=`$LIBHNJ_CONFIG $libhnjconf_args --cflags`
+    LIBHNJ_LIBS=`$LIBHNJ_CONFIG $libhnjconf_args --libs`
+
+    libhnj_major_version=`$LIBHNJ_CONFIG $libhnj_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+    libhnj_minor_version=`$LIBHNJ_CONFIG $libhnj_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+    libhnj_micro_version=`$LIBHNJ_CONFIG $libhnj_config_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+    if test "x$enable_libhnjtest" = "xyes" ; then
+      ac_save_CFLAGS="$CFLAGS"
+      ac_save_LIBS="$LIBS"
+      CFLAGS="$CFLAGS $LIBHNJ_CFLAGS"
+      LIBS="$LIBS $LIBHNJ_LIBS"
+dnl
+dnl Now check if the installed LIBHNJ is sufficiently new. (Also sanity
+dnl checks the results of libhnj-config to some extent
+dnl
+      rm -f conf.libhnjtest
+      AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <libhnj/just.h>
+
+char*
+my_strdup (char *str)
+{
+  char *new_str;
+  
+  if (str)
+    {
+      new_str = malloc ((strlen (str) + 1) * sizeof(char));
+      strcpy (new_str, str);
+    }
+  else
+    new_str = NULL;
+  
+  return new_str;
+}
+
+int main ()
+{
+  int major, minor, micro;
+  char *tmp_version;
+
+  system ("touch conf.libhnjtest");
+
+  /* HP/UX 9 (%@#!) writes to sscanf strings */
+  tmp_version = my_strdup("$min_libhnj_version");
+  if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
+     printf("%s, bad version string\n", "$min_libhnj_version");
+     exit(1);
+   }
+
+   if (($libhnj_major_version > major) ||
+      (($libhnj_major_version == major) && ($libhnj_minor_version > minor)) ||
+      (($libhnj_major_version == major) && ($libhnj_minor_version == minor) && ($libhnj_micro_version >= micro)))
+    {
+      return 0;
+    }
+  else
+    {
+      printf("\n*** 'libhnj-config --version' returned %d.%d.%d, but the minimum version\n", $libhnj_major_version, $libhnj_minor_version, $libhnj_micro_version);
+      printf("*** of LIBHNJ required is %d.%d.%d. If libhnj-config is correct, then it is\n", major, minor, micro);
+      printf("*** best to upgrade to the required version.\n");
+      printf("*** If libhnj-config was wrong, set the environment variable LIBHNJ_CONFIG\n");
+      printf("*** to point to the correct copy of libhnj-config, and remove the file\n");
+      printf("*** config.cache before re-running configure\n");
+      return 1;
+    }
+}
+
+],, no_libhnj=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+     fi
+  fi
+  if test "x$no_libhnj" = x ; then
+     AC_MSG_RESULT(yes)
+     ifelse([$2], , :, [$2])     
+  else
+     AC_MSG_RESULT(no)
+     if test "$LIBHNJ_CONFIG" = "no" ; then
+       echo "*** The libhnj-config script installed by LIBHNJ could not be found"
+       echo "*** If LIBHNJ was installed in PREFIX, make sure PREFIX/bin is in"
+       echo "*** your path, or set the LIBHNJ_CONFIG environment variable to the"
+       echo "*** full path to libhnj-config."
+     else
+       if test -f conf.libhnjtest ; then
+        :
+       else
+          echo "*** Could not run LIBHNJ test program, checking why..."
+          CFLAGS="$CFLAGS $LIBHNJ_CFLAGS"
+          LIBS="$LIBS $LIBHNJ_LIBS"
+          AC_TRY_LINK([
+#include <stdio.h>
+#include <libhnj/just.h>
+],      [ return 0; ],
+        [ echo "*** The test program compiled, but did not run. This usually means"
+          echo "*** that the run-time linker is not finding LIBHNJ or finding the wrong"
+          echo "*** version of LIBHNJ. If it is not finding LIBHNJ, 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 "*** The test program failed to compile or link. See the file config.log for the"
+          echo "*** exact error that occured. This usually means LIBHNJ was incorrectly installed"
+          echo "*** or that you have moved LIBHNJ since it was installed. In the latter case, you"
+          echo "*** may want to edit the libhnj-config script: $LIBHNJ_CONFIG" ])
+          CFLAGS="$ac_save_CFLAGS"
+          LIBS="$ac_save_LIBS"
+       fi
+     fi
+     LIBHNJ_CFLAGS=""
+     LIBHNJ_LIBS=""
+     ifelse([$3], , :, [$3])
+  fi
+  AC_SUBST(LIBHNJ_CFLAGS)
+  AC_SUBST(LIBHNJ_LIBS)
+  rm -f conf.libhnjtest
+])