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 5f5f1ccb..ad0cbc25 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,4 +24,3 @@ cscope.*
 /configure
 /libtool
 /*.pc
-/libnl.sym
diff --git a/Makefile.am b/Makefile.am
index 6d047a96..e48f1f8b 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 9c59c055..097dca8e 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 f7e5a932..f193c29e 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 df8888c6..b1d72fff 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 00000000..35325792
--- /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 00000000..35325792
--- /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 00000000..35325792
--- /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 00000000..35325792
--- /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 00000000..35325792
--- /dev/null
+++ b/libnl-xfrm-3.sym
@@ -0,0 +1,4 @@
+libnl_3 {
+global:
+	*;
+};