Use pkg-config to obtain xtables.h path

On openSUSE 12.2 (at least) xtables.h is not installed in the system-wide
include dir but in /usr/include/iptables-1.4.16.3/. This results in the
following build failure:
em_ipset.c:26:21: fatal error: xtables.h: No such file or directory

Other includers of xtables.h already call out to pkg-config

diff --git a/tc/Makefile b/tc/Makefile
index 696f89132d4eaf6821e89fc34c1860abbf3d2dca..f26e76468457151546b6d3e523a3578500c69e6f 100644 (file)
--- a/tc/Makefile
+++ b/tc/Makefile
@@ -140,6 +140,8 @@ m_xt.so: m_xt.c
 m_xt_old.so: m_xt_old.c
        $(CC) $(CFLAGS) $(LDFLAGS) -shared -fpic -o m_xt_old.so m_xt_old.c $$($(PKG_CONFIG) xtables --cflags --libs)
 
+em_ipset.o: CFLAGS += $$($(PKG_CONFIG) xtables --cflags)
+
 %.yacc.c: %.y
        $(YACC) $(YACCFLAGS) -o $@ $<