{gb,sim,usb}: ensure -no-undefined is present in *_la_LDFLAGS
Make sure that there is no undefined references in shared libraries.
Inspired by GitHub PR#6 [1] by Michael Dickens. Tweaked by me.
Change-Id: I7ddd6c75935b0f25d78a948f1577656d77a204e3
Related: [1] https://github.com/osmocom/libosmocore/pull/6
diff --git a/src/gb/Makefile.am b/src/gb/Makefile.am
index 022578f..b0fcaa9 100644
--- a/src/gb/Makefile.am
+++ b/src/gb/Makefile.am
@@ -15,7 +15,11 @@
if ENABLE_GB
lib_LTLIBRARIES = libosmogb.la
-libosmogb_la_LDFLAGS = $(LTLDFLAGS_OSMOGB) -version-info $(LIBVERSION)
+libosmogb_la_LDFLAGS = \
+ $(LTLDFLAGS_OSMOGB) \
+ -version-info $(LIBVERSION) \
+ -no-undefined \
+ $(NULL)
libosmogb_la_LIBADD = $(TALLOC_LIBS) \
$(top_builddir)/src/libosmocore.la \
$(top_builddir)/src/vty/libosmovty.la \