--- open-lldp-0.9.46.orig/Makefile.am
+++ open-lldp-0.9.46/Makefile.am
@@ -16,7 +16,7 @@ ACLOCAL_AMFLAGS = -I m4
 parse_cli.o: CFLAGS+=-U_FORTIFY_SOURCE -Wno-error
 
 ## system requires a shared libconfig
-AM_CFLAGS = -Wall -Werror -Wextra -Wformat=2 $(LIBCONFIG_CFLAGS) $(LIBNL_CFLAGS)
+AM_CFLAGS = -Wall -fgnu89-inline -Wextra -Wformat=2 $(LIBCONFIG_CFLAGS) $(LIBNL_CFLAGS)
 AM_LDFLAGS = $(LIBCONFIG_LIBS) $(LIBNL_LIBS)
 
 ## header files to be installed, for programs using the client interface to lldpad