[dm-devel] [PATCH v2 11/12] libmpathcmd: add linker version script

[mwilck at suse.com]

From: Martin Wilck <mwilck at suse.com>

For completeness, this isn't really necessary.
The version string is set to "LIBMPATHCMD_1.0.0".

Reviewed-by: Benjamin Marzinski <bmarzins at redhat.com>
Signed-off-by: Martin Wilck <mwilck at suse.com>
---
 libmpathcmd/Makefile            |  6 ++++--
 libmpathcmd/libmpathcmd.version | 25 +++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 2 deletions(-)
 create mode 100644 libmpathcmd/libmpathcmd.version

diff --git a/libmpathcmd/Makefile b/libmpathcmd/Makefile
index 08ccb81..2591019 100644
--- a/libmpathcmd/Makefile
+++ b/libmpathcmd/Makefile
@@ -3,6 +3,7 @@ include ../Makefile.inc
 SONAME = 0
 DEVLIB = libmpathcmd.so
 LIBS = $(DEVLIB).$(SONAME)
+VERSION_SCRIPT := libmpathcmd.version
 
 CFLAGS += $(LIB_CFLAGS)
 
@@ -10,8 +11,9 @@ OBJS = mpath_cmd.o
 
 all:	$(DEVLIB)
 
-$(LIBS): $(OBJS)
-	$(CC) $(LDFLAGS) $(SHARED_FLAGS) -Wl,-soname=$@ -o $@ $(OBJS) $(LIBDEPS)
+$(LIBS): $(OBJS) $(VERSION_SCRIPT)
+	$(CC) $(LDFLAGS) $(SHARED_FLAGS) -Wl,-soname=$@ \
+		-Wl,--version-script=$(VERSION_SCRIPT) -o $@ $(OBJS) $(LIBDEPS)
 
 $(DEVLIB): $(LIBS)
 	$(LN) $(LIBS) $@
diff --git a/libmpathcmd/libmpathcmd.version b/libmpathcmd/libmpathcmd.version
new file mode 100644
index 0000000..f100628
--- /dev/null
+++ b/libmpathcmd/libmpathcmd.version
@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2020 SUSE LLC
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * libmpathcmd ABI
+ *
+ * The ABI of libmpathcmd is supposed to remain stable. Removing symbols
+ * or altering existing symbols' semantics is not allowed. When changing a
+ * a symbol, either use a new name, or explicit symver directives.
+ *
+ * See libmultipath.version for general policy about version numbers.
+ */
+LIBMPATHCMD_1.0.0 {
+global:
+	__mpath_connect;
+	mpath_connect;
+	mpath_disconnect;
+	mpath_process_cmd;
+	mpath_recv_reply;
+	mpath_recv_reply_len;
+	mpath_recv_reply_data;
+	mpath_send_cmd;
+local:
+	*;
+};
-- 
2.28.0