fixed the setting of AM_LDFLAGS
# Put Together AM_CPPFLAGS and AM_LDFLAGS
include $(top_srcdir)/lib_flags.am
-AM_LDFLAGS = -module -avoid-version -shared -export-dynamic \
+AM_LDFLAGS += -module -avoid-version -shared -export-dynamic \
-no-undefined -rpath ${abs_builddir}
BZIP2HDRS = bzlib.h bzlib_private.h
