--- gigedit/trunk/configure.ac	2007/04/09 18:52:39	1152
+++ gigedit/trunk/configure.ac	2007/05/30 00:14:05	1213
@@ -1,9 +1,33 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(gigedit,0.0.3)
-AC_CONFIG_SRCDIR(src/main.cpp)
 
-AC_CONFIG_HEADERS(config.h)
+#------------------------------------------------------------------------------------
+# The following is the libtool / shared library version. This doesn't have to
+# do anything with the release version. It MUST conform to the following rules:
+#
+#  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.
+
+LIBGIGEDIT_LT_CURRENT=0
+LIBGIGEDIT_LT_REVISION=0
+LIBGIGEDIT_LT_AGE=0
+SHARED_VERSION_INFO="$LIBGIGEDIT_LT_CURRENT:$LIBGIGEDIT_LT_REVISION:$LIBGIGEDIT_LT_AGE"
+AC_PROG_LIBTOOL
+AC_SUBST(SHLIB_VERSION_ARG)
+AC_SUBST(SHARED_VERSION_INFO)
 
+AC_CONFIG_SRCDIR(src/main.cpp)
+AC_CONFIG_HEADERS(config.h)
 AM_INIT_AUTOMAKE
 
 GETTEXT_PACKAGE=gigedit
@@ -23,10 +47,33 @@
 AC_SUBST(SNDFILE_CFLAGS)
 AC_SUBST(SNDFILE_LIBS)
 
+# check for (optional) presence of liblinuxsampler
+liblinuxsampler_version="0.4.0.5cvs"
+PKG_CHECK_MODULES(
+    LINUXSAMPLER, linuxsampler >= $liblinuxsampler_version,
+    have_linuxsampler=1, have_linuxsampler=0
+)
+if test "$have_linuxsampler" = "0"; then
+    echo "Required liblinuxsampler version not found!"
+    echo "You need to have liblinuxsampler version ${liblinuxsampler_version}"
+    echo "installed. Support for on-the-fly editing with LinuxSampler will"
+    echo "be disabled."
+else
+    echo "yes, found linuxsampler $linuxsampler_version"
+fi
+AC_SUBST(LINUXSAMPLER_CFLAGS)
+AC_SUBST(LINUXSAMPLER_LIBS)
+AM_CONDITIONAL(HAVE_LINUXSAMPLER, test $have_linuxsampler = "1")
+AC_DEFINE_UNQUOTED(
+    HAVE_LINUXSAMPLER, $have_linuxsampler,
+    [Define to 1 if you have LinuxSampler installed.]
+)
+
 AC_CONFIG_FILES([
-Makefile
-src/Makefile
-po/Makefile.in
-debian/Makefile
+	Makefile
+	src/Makefile
+	src/plugin/Makefile
+	po/Makefile.in
+	debian/Makefile
 ])
 AC_OUTPUT