Fix build with LLD

LLVM's LLD handles the -retain-symbols-file option (used by
-export-symbols-regex in libtool) differently from GNU ld, causing
undefined references during link. This commit removes the
-export-symbols-regex option from libcalf_la_LDFLAGS since by default
libtool exports all symbols anyway, so it should not be necessary.

Fixes #156.

Signed-off-by: Violet Purcell <vimproved@inventati.org>

src/Makefile.am

@@ -42,7 +42,7 @@ libcalf_la_LIBADD = $(FLUIDSYNTH_DEPS_LIBS) $(GLIB_DEPS_LIBS)
 if USE_DEBUG
 libcalf_la_LDFLAGS = -rpath $(pkglibdir) -avoid-version -module -lexpat -disable-static
 else
-libcalf_la_LDFLAGS = -rpath $(pkglibdir) -avoid-version -module -lexpat -disable-static -export-symbols-regex "lv2_descriptor"
+libcalf_la_LDFLAGS = -rpath $(pkglibdir) -avoid-version -module -lexpat -disable-static
 endif
 
 if USE_LV2_GUI