Add LDFLAGS variable to Makefile.am, make sure the extra linker flags can be passed.

Upstream-Status: Pending

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>

diff --git a/swig/perl/Makefile.am b/swig/perl/Makefile.am
index 2f9ee4c..3a18892 100644
--- a/swig/perl/Makefile.am
+++ b/swig/perl/Makefile.am
@@ -20,7 +20,7 @@ OpenIPMI_SRC = OpenIPMI_perl.c
 OpenIPMI_OBJ = OpenIPMI_wrap.lo OpenIPMI_perl.lo
 
 OpenIPMI.so: $(OpenIPMI_OBJ)
-	$(LIBTOOL) --mode=link $(CC) -shared -module -avoid-version -o $(@:.so=.la) $^ $(OPENIPMI_SWIG_LIBS) $(PERL_POSIX_LIB) -rpath $(PERL_INSTALL_DIR)/auto/OpenIPMI
+	$(LIBTOOL) --mode=link $(CC) -shared -module -avoid-version $(LDFLAGS) -o $(@:.so=.la) $^ $(OPENIPMI_SWIG_LIBS) $(PERL_POSIX_LIB) -rpath $(PERL_INSTALL_DIR)/auto/OpenIPMI
 	rm -f OpenIPMI.so
 	mv .libs/OpenIPMI.so .