--- libgig/trunk/configure.in	2004/07/02 19:37:09	168
+++ libgig/trunk/configure.in	2005/05/08 16:19:34	518
@@ -1,7 +1,31 @@
 AC_INIT(configure.in)
 AM_CONFIG_HEADER(config.h)
 
-AM_INIT_AUTOMAKE(libgig, 0.7.1)
+AM_INIT_AUTOMAKE(libgig, 1.0.0, cuse@users.sourceforge.net)
+AC_PROG_LIBTOOL
+
+
+#------------------------------------------------------------------------------------
+# Rules for library version information:
+#
+#  1. Start with version information of `0:0:0' for each libtool library.
+#  2. Update the version information only immediately before a public release of
+#     your software. More frequent updates are unnecessary, and only guarantee
+#     that the current interface number gets larger faster.
+#  3. If the library source code has changed at all since the last update, then
+#     increment revision (`c:r:a' becomes `c:r+1:a').
+#  4. If any interfaces have been added, removed, or changed since the last update,
+#     increment current, and set revision to 0.
+#  5. If any interfaces have been added since the last public release, then increment
+#     age.
+#  6. If any interfaces have been removed since the last public release, then set age
+#     to 0.
+
+LIBGIG_CURRENT=1
+LIBGIG_REVISION=0
+LIBGIG_AGE=0
+SHARED_VERSION_INFO="$LIBGIG_CURRENT:$LIBGIG_REVISION:$LIBGIG_AGE"
+
 
 AC_C_BIGENDIAN
 
@@ -9,4 +33,37 @@
 AC_PROG_CXX
 AM_PROG_LIBTOOL
 
-AC_OUTPUT(Makefile src/Makefile libgig.spec libgig.pc Doxyfile)
+AC_SUBST(SHLIB_VERSION_ARG)
+AC_SUBST(SHARED_VERSION_INFO)
+
+have_audio_file_lib="false"
+
+# check for presence of libsndfile
+PKG_CHECK_MODULES(SNDFILE, sndfile >= 1.0.2, ac_cv_sndfile=1, ac_cv_sndfile=0)
+AM_CONDITIONAL(HAVE_SNDFILE, test $ac_cv_sndfile = "1")
+AC_DEFINE_UNQUOTED([HAVE_SNDFILE],${ac_cv_sndfile}, [Set to 1 if you have libsndfile.])
+AC_SUBST(SNDFILE_CFLAGS)
+AC_SUBST(SNDFILE_LIBS)
+if test "$ac_cv_sndfile" = "1"; then
+    have_audio_file_lib="true";
+fi
+
+# check for presence of libaudiofile
+PKG_CHECK_MODULES(AUDIOFILE, audiofile >= 0.2.3, ac_cv_audiofile=1, ac_cv_audiofile=0)
+AC_DEFINE_UNQUOTED([HAVE_AUDIOFILE],${ac_cv_audiofile}, [Set to 1 if you have libaudiofile.])
+AC_SUBST(AUDIOFILE_CFLAGS)
+AC_SUBST(AUDIOFILE_LIBS)
+if test "$ac_cv_audiofile" = "1"; then
+    have_audio_file_lib="true";
+fi
+
+if test "$have_audio_file_lib" = "false"; then
+    echo "No audio file library found!"
+    echo "Sorry, you need either libsndfile or libaudiofile to compile libgig."
+    echo "This is needed for the gigextract utility to write audio files."
+    exit -1;
+fi
+
+AM_INIT_AUTOMAKE(libgig, "$LIBGIG_CURRENT.$LIBGIG_REVISION.$LIBGIG_AGE")
+
+AC_OUTPUT(Makefile doc/Makefile man/Makefile src/Makefile libgig.spec gig.pc Doxyfile man/dlsdump.1 man/gigdump.1 man/gigextract.1 man/rifftree.1)