build: resolve build error involving libnftnl

make[2]: Entering directory '/home/jengelh/code/iptables/extensions'
  CC       libebt_limit.oo
In file included from ../iptables/nft.h:5:0,
                 from libebt_limit.c:21:
../iptables/nft-shared.h:6:27: fatal error: libnftnl/rule.h: No such file or directory
 #include <libnftnl/rule.h>
                           ^
compilation terminated.

Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/extensions/GNUmakefile.in b/extensions/GNUmakefile.in
index 4e94bd01d4c1b7e0ded7baf7865468effe514220..181e155adaa7a63d9c3d8940a7bc8a0a53303010 100644 (file)
--- a/extensions/GNUmakefile.in
+++ b/extensions/GNUmakefile.in
@@ -21,7 +21,7 @@ regular_CPPFLAGS   = @regular_CPPFLAGS@
 kinclude_CPPFLAGS  = @kinclude_CPPFLAGS@
 
 AM_CFLAGS       = ${regular_CFLAGS}
-AM_CPPFLAGS     = ${regular_CPPFLAGS} -I${top_builddir}/include -I${top_builddir} -I${top_srcdir}/include ${kinclude_CPPFLAGS} ${CPPFLAGS} @libnetfilter_conntrack_CFLAGS@
+AM_CPPFLAGS     = ${regular_CPPFLAGS} -I${top_builddir}/include -I${top_builddir} -I${top_srcdir}/include ${kinclude_CPPFLAGS} ${CPPFLAGS} @libnetfilter_conntrack_CFLAGS@ @libnftnl_CFLAGS@
 AM_DEPFLAGS     = -Wp,-MMD,$(@D)/.$(@F).d,-MT,$@
 AM_LDFLAGS      = @noundef_LDFLAGS@