iptables: fix per object LDFLAGS for aggragate object builds

Without this patch the extra LDFLAGS of objects were selected based on the
name of the extension being built, which breaks for aggregate so builds.

Signed-off-by: John Crispin <john@phrozen.org>

package/network/utils/iptables/patches/600-shared-libext.patch

@@ -28,27 +28,27 @@
 -libext.a: initext.o ${libext_objs}
 -	${AM_VERBOSE_AR} ${AR} crs $@ $^;
 +libiptext.so: initext.o ${libext_objs}
-+	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables ${$*_LIBADD};
++	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables $(foreach obj,$^,${$(patsubst lib%.o,%,$(obj))_LIBADD});
  
 -libext_ebt.a: initextb.o ${libext_ebt_objs}
 -	${AM_VERBOSE_AR} ${AR} crs $@ $^;
 +libiptext_ebt.so: initextb.o ${libext_ebt_objs}
-+	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables ${$*_LIBADD};
++	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables $(foreach obj,$^,${$(patsubst lib%.o,%,$(obj))_LIBADD});
  
 -libext_arpt.a: initexta.o ${libext_arpt_objs}
 -	${AM_VERBOSE_AR} ${AR} crs $@ $^;
 +libiptext_arpt.so: initexta.o ${libext_arpt_objs}
-+	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables ${$*_LIBADD};
++	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables $(foreach obj,$^,${$(patsubst lib%.o,%,$(obj))_LIBADD});
  
 -libext4.a: initext4.o ${libext4_objs}
 -	${AM_VERBOSE_AR} ${AR} crs $@ $^;
 +libiptext4.so: initext4.o ${libext4_objs}
-+	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables ${$*_LIBADD};
++	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables $(foreach obj,$^,${$(patsubst lib%.o,%,$(obj))_LIBADD});
  
 -libext6.a: initext6.o ${libext6_objs}
 -	${AM_VERBOSE_AR} ${AR} crs $@ $^;
 +libiptext6.so: initext6.o ${libext6_objs}
-+	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables ${$*_LIBADD};
++	${AM_VERBOSE_CCLD} ${CCLD} ${AM_LDFLAGS} -shared ${LDFLAGS} -o $@ $^ -L../libxtables/.libs -lxtables $(foreach obj,$^,${$(patsubst lib%.o,%,$(obj))_LIBADD});
  
  initext_func  := $(addprefix xt_,${pfx_build_static})
  initextb_func := $(addprefix ebt_,${pfb_build_static})