File libip6t_NETMAP-linkfix.patch of Package iptables

File libip6t_NETMAP-linkfix.patch of Package iptables (Revision 34)

Currently displaying revision 34, show latest

From: Jan Engelhardt <jengelh@inai.de>
Date: Tue, 1 Jan 2013 22:47:51 +0000 (+0000)
Subject: build: resolve link failure for ip6t_NETMAP
X-Git-Url: https://git.netfilter.org/cgi-bin/gitweb.cgi?p=iptables.git;a=commitdiff_plain;h=68e77a26111ee6b8f10c735a76891a7de6d57ee6

build: resolve link failure for ip6t_NETMAP

Link stage of libip6t_NETMAP failed since recently.

CCLD     libip6t_NETMAP.so
/usr/lib64/gcc/x86_64-suse-linux/4.7/../../../../x86_64-suse-linux/bin/ld:
cannot find -lip6tc

libip6t_NETMAP.c uses the "ipv6_prefix_length" function from
libip6tc.so; "-lip6tc" is used in the Makefile, but, the directory to
it is not specified.

Why does the link succeed for some people? Because
/usr/lib(64)/libip6tc.so satisfies -lip6tc, but not all environments,
especially those without iptables development files, have that file,
hence this link error can happen.

By suggestion of Mike Frysinger, this patch uses libtool to produce
and link the plugins.

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

diff --git a/extensions/GNUmakefile.in b/extensions/GNUmakefile.in
index e71e3ff..adad4d6 100644
--- a/extensions/GNUmakefile.in
+++ b/extensions/GNUmakefile.in
@@ -33,6 +33,7 @@ AM_VERBOSE_CXX    = @echo "  CXX     " $@;
 AM_VERBOSE_CXXLD  = @echo "  CXXLD   " $@;
 AM_VERBOSE_AR     = @echo "  AR      " $@;
 AM_VERBOSE_GEN    = @echo "  GEN     " $@;
+AM_VERBOSE_NULL   = @
 endif
 
 #
@@ -75,7 +76,7 @@ install: ${targets_install}
 	if test -n "${targets_install}"; then install -pm0755 $^ "${DESTDIR}${xtlibdir}/"; fi;
 
 clean:
-	rm -f *.o *.oo *.so *.a {matches,targets}.man initext.c initext4.c initext6.c;
+	rm -f *.la *.o *.lo *.so *.a {matches,targets}.man initext.c initext4.c initext6.c;
 	rm -f .*.d .*.dd;
 
 distclean: clean
@@ -89,19 +90,22 @@ init%.o: init%.c
 #
 #	Shared libraries
 #
-lib%.so: lib%.oo
-	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $< -L../libxtables/.libs -lxtables ${$*_LIBADD};
+lib%.so: lib%.la
+	${AM_VERBOSE_NULL} ln -fs .libs/$@ $@
 
-lib%.oo: ${srcdir}/lib%.c
-	${AM_VERBOSE_CC} ${CC} ${AM_CPPFLAGS} ${AM_DEPFLAGS} ${AM_CFLAGS} -D_INIT=lib$*_init -DPIC -fPIC ${CFLAGS} -o $@ -c $<;
+lib%.la: lib%.lo
+	${AM_VERBOSE_CCLD} ../libtool ${AM_LIBTOOL_SILENT} --tag=CC --mode=link ${CCLD} ${AM_LDFLAGS} -module ${LDFLAGS} -o $@ $< ../libxtables/libxtables.la ${$*_LIBADD} -rpath ${xtlibdir}
+
+lib%.lo: ${srcdir}/lib%.c
+	${AM_VERBOSE_CC} ../libtool ${AM_LIBTOOL_SILENT} --tag=CC --mode=compile ${CC} ${AM_CPPFLAGS} ${AM_DEPFLAGS} ${AM_CFLAGS} -D_INIT=lib$*_init ${CFLAGS} -o $@ -c $<
 
 libxt_NOTRACK.so: libxt_CT.so
-	ln -fs $< $@
+	${AM_VERBOSE_GEN} ln -fs $< $@
 libxt_state.so: libxt_conntrack.so
-	ln -fs $< $@
+	${AM_VERBOSE_GEN} ln -fs $< $@
 
 # Need the LIBADDs in iptables/Makefile.am too for libxtables_la_LIBADD
-ip6t_NETMAP_LIBADD  = -lip6tc
+ip6t_NETMAP_LIBADD  = ../libiptc/libip6tc.la
 xt_RATEEST_LIBADD   = -lm
 xt_statistic_LIBADD = -lm