2 files changed, 15 insertions, 4 deletions

diff --git a/configure.ac b/configure.ac
index 285c3ac5..64d53dec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,6 +10,17 @@ AM_INIT_AUTOMAKE([1.10 -Wall])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 AC_CONFIG_MACRO_DIR([m4])
 
+LIBTOXCORE_LT_VERSION=0:0:0
+dnl
+dnl            current:revision:age
+dnl
+dnl current:  increment if interfaces have been added, removed or changed
+dnl revision: increment if source code has changed, set to zero if current is
+dnl           incremented
+dnl age:      increment if interfaces have been added, set to zero if
+dnl           interfaces have been removed or changed
+EXTRA_LT_LDFLAGS="-version-info $LIBTOXCORE_LT_VERSION"
+
 if test "x${prefix}" = "xNONE"; then
     prefix="${ac_default_prefix}"
 fi
@@ -106,6 +117,7 @@ case $host_os in
         WIN32="yes"
         AC_MSG_WARN([nTox is not supported on $host_os yet, disabling])
         BUILD_NTOX="no"
+        EXTRA_LT_LDFLAGS="$EXTRA_LT_LDFLAGS -no-undefined"
     ;;
     *solaris*)
         LIBS="$LIBS -lssp -lsocket -lnsl"
@@ -118,6 +130,8 @@ case $host_os in
 esac
 AM_CONDITIONAL(WIN32, test "x$WIN32" = "xyes")
 
+AC_SUBST(EXTRA_LT_LDFLAGS)
+
 # Checks for libraries.
 LIBSODIUM_LIBS=
 LIBSODIUM_LDFLAGS=
diff --git a/toxcore/Makefile.inc b/toxcore/Makefile.inc
index 90912a59..da07db41 100644
--- a/toxcore/Makefile.inc
+++ b/toxcore/Makefile.inc
@@ -1,5 +1,3 @@
-LIBTOXCORE_VERSION = 0:0:0
-
 lib_LTLIBRARIES = libtoxcore.la
 
 libtoxcore_la_include_HEADERS = \
@@ -33,8 +31,7 @@ libtoxcore_la_CFLAGS =  -I$(top_srcdir) \
                         -I$(top_srcdir)/toxcore \
                         $(LIBSODIUM_CFLAGS)
 
-libtoxcore_la_LDFLAGS = -version-info $(LIBTOXCORE_VERSION) \
-                        -no-undefined \
+libtoxcore_la_LDFLAGS = $(EXTRA_LT_LDFLAGS) \
                         $(LIBSODIUM_LDFLAGS) \
                         $(WINSOCK2_LIBS)