-pkglib_LTLIBRARIES = first.la model.la gridtest.la splittest.la
-first_la_LDFLAGS = -module -avoid-version
-model_la_LDFLAGS = -module -avoid-version
-gridtest_la_LDFLAGS = -module -avoid-version
-splittest_la_LDFLAGS = -module -avoid-version
+pkglib_LTLIBRARIES = first.la model.la gridtest.la splittest.la multiwin.la
+PLUGIN_LIBTOOL_FLAGS=-module -avoid-version -export-symbols-regex "^glk_main$$"
+
+first_la_SOURCES = first.c
+first_la_LDFLAGS = $(PLUGIN_LIBTOOL_FLAGS)
+
+model_la_SOURCES = model.c
+model_la_LDFLAGS = $(PLUGIN_LIBTOOL_FLAGS)
+
+gridtest_la_SOURCES = gridtest.c
+gridtest_la_LDFLAGS = $(PLUGIN_LIBTOOL_FLAGS)
+
+splittest_la_SOURCES = splittest.c
+splittest_la_LDFLAGS = $(PLUGIN_LIBTOOL_FLAGS)
+
+multiwin_la_SOURCES = multiwin.c
+multiwin_la_CFLAGS = @GLIB_CFLAGS@
+multiwin_la_LDFLAGS = $(PLUGIN_LIBTOOL_FLAGS)