build: add individual linker version scripts for shared libraries

Instead of using a shared version script 'libnl.sym', add individual
linker scripts for all libnl libraries.

For now, the content of the version script is unchanged and this
patch does not have any externally visible changes.

Signed-off-by: Thomas Haller <thaller@redhat.com>

10 files changed, 59 insertions, 6 deletions

diff --git a/.gitignore b/.gitignore
index 5f5f1cc..ad0cbc2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,4 +24,3 @@ cscope.*
 /configure
 /libtool
 /*.pc
-/libnl.sym
diff --git a/Makefile.am b/Makefile.am
index 6d047a9..e48f1f8 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -21,4 +21,10 @@ pkgsysconfdir = ${sysconfdir}/libnl
 pkgsysconf_DATA = etc/pktloc etc/classid
 
 EXTRA_DIST = \
-	$(pkgsysconf_DATA)
+	$(pkgsysconf_DATA) \
+	libnl-3.sym \
+	libnl-genl-3.sym \
+	libnl-idiag-3.sym \
+	libnl-nf-3.sym \
+	libnl-route-3.sym \
+	libnl-xfrm-3.sym
diff --git a/configure.ac b/configure.ac
index 9c59c05..097dca8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -121,7 +121,6 @@ AC_CONFIG_SUBDIRS([doc])
 
 AC_CONFIG_FILES([
 Makefile
-libnl.sym
 libnl-3.0.pc
 libnl-route-3.0.pc
 libnl-genl-3.0.pc
diff --git a/lib/Makefile.am b/lib/Makefile.am
index f7e5a93..f193c29 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -11,27 +11,46 @@ AM_CPPFLAGS  =			 	\
 	-DSYSCONFDIR=\"$(sysconfdir)/libnl\"
 
 AM_LDFLAGS = \
-	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) \
-	-Wl,--version-script=$(top_builddir)/libnl.sym
+	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE)
 
 lib_LTLIBRARIES = \
 	libnl-3.la libnl-genl-3.la libnl-route-3.la libnl-nf-3.la libnl-idiag-3.la libnl-xfrm-3.la
 
+libnl_3_la_LDFLAGS = \
+	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) \
+	-Wl,--version-script=$(top_builddir)/libnl-3.sym
+libnl_3_la_DEPENDENCIES = \
+	$(top_builddir)/libnl-3.sym
 libnl_3_la_SOURCES = \
 	addr.c attr.c cache.c cache_mngr.c cache_mngt.c data.c \
 	error.c handlers.c msg.c nl.c object.c socket.c utils.c \
 	version.c hash.c hashtable.c
 
 libnl_idiag_3_la_LIBADD = libnl-3.la
+libnl_idiag_3_la_LDFLAGS = \
+	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) \
+	-Wl,--version-script=$(top_builddir)/libnl-idiag-3.sym
+libnl_idiag_3_la_DEPENDENCIES = \
+	$(top_builddir)/libnl-idiag-3.sym
 libnl_idiag_3_la_SOURCES = \
 	idiag/idiag_meminfo_obj.c idiag/idiag_vegasinfo_obj.c \
 	idiag/idiag_msg_obj.c idiag/idiag_req_obj.c idiag/idiag.c
 
 libnl_genl_3_la_LIBADD  = libnl-3.la
+libnl_genl_3_la_LDFLAGS = \
+	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) \
+	-Wl,--version-script=$(top_builddir)/libnl-genl-3.sym
+libnl_genl_3_la_DEPENDENCIES = \
+	$(top_builddir)/libnl-genl-3.sym
 libnl_genl_3_la_SOURCES = \
 	genl/ctrl.c genl/family.c genl/genl.c genl/mngt.c
 
 libnl_nf_3_la_LIBADD  = libnl-route-3.la
+libnl_nf_3_la_LDFLAGS = \
+	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) \
+	-Wl,--version-script=$(top_builddir)/libnl-nf-3.sym
+libnl_nf_3_la_DEPENDENCIES = \
+	$(top_builddir)/libnl-nf-3.sym
 libnl_nf_3_la_SOURCES = \
 	netfilter/ct.c netfilter/ct_obj.c netfilter/log.c \
 	netfilter/log_msg.c netfilter/log_msg_obj.c netfilter/log_obj.c \
@@ -60,6 +79,11 @@ route/cls/ematch_syntax.c: route/cls/ematch_syntax.y
 	$(AM_V_GEN) $(MKDIR_P) route/cls; $(YACC) -d $(YFLAGS) -o $@ $^
 
 libnl_route_3_la_LIBADD  = libnl-3.la
+libnl_route_3_la_LDFLAGS = \
+	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) \
+	-Wl,--version-script=$(top_builddir)/libnl-route-3.sym
+libnl_route_3_la_DEPENDENCIES = \
+	$(top_builddir)/libnl-route-3.sym
 libnl_route_3_la_SOURCES = \
 	route/addr.c route/class.c route/cls.c route/act.c route/link.c \
 	route/neigh.c route/neightbl.c route/nexthop.c route/qdisc.c \
@@ -112,6 +136,11 @@ EXTRA_DIST = \
 	route/cls/ematch_syntax.y
 
 libnl_xfrm_3_la_LIBADD  = libnl-3.la
+libnl_xfrm_3_la_LDFLAGS = \
+	-version-info $(LT_CURRENT):$(LT_REVISION):$(LT_AGE) \
+	-Wl,--version-script=$(top_builddir)/libnl-xfrm-3.sym
+libnl_xfrm_3_la_DEPENDENCIES = \
+	$(top_builddir)/libnl-xfrm-3.sym
 libnl_xfrm_3_la_SOURCES = \
 	xfrm/ae.c \
 	xfrm/lifetime.c \
diff --git a/libnl.sym.in b/libnl-3.sym
index df8888c..b1d72ff 100644
--- a/libnl.sym.in
+++ b/libnl-3.sym
@@ -1,4 +1,4 @@
-libnl_@MAJ_VERSION@ {
+libnl_3 {
 global:
 	*;
 local:
diff --git a/libnl-genl-3.sym b/libnl-genl-3.sym
new file mode 100644
index 0000000..3532579
--- /dev/null
+++ b/libnl-genl-3.sym
@@ -0,0 +1,4 @@
+libnl_3 {
+global:
+	*;
+};
diff --git a/libnl-idiag-3.sym b/libnl-idiag-3.sym
new file mode 100644
index 0000000..3532579
--- /dev/null
+++ b/libnl-idiag-3.sym
@@ -0,0 +1,4 @@
+libnl_3 {
+global:
+	*;
+};
diff --git a/libnl-nf-3.sym b/libnl-nf-3.sym
new file mode 100644
index 0000000..3532579
--- /dev/null
+++ b/libnl-nf-3.sym
@@ -0,0 +1,4 @@
+libnl_3 {
+global:
+	*;
+};
diff --git a/libnl-route-3.sym b/libnl-route-3.sym
new file mode 100644
index 0000000..3532579
--- /dev/null
+++ b/libnl-route-3.sym
@@ -0,0 +1,4 @@
+libnl_3 {
+global:
+	*;
+};
diff --git a/libnl-xfrm-3.sym b/libnl-xfrm-3.sym
new file mode 100644
index 0000000..3532579
--- /dev/null
+++ b/libnl-xfrm-3.sym
@@ -0,0 +1,4 @@
+libnl_3 {
+global:
+	*;
+};