[PATCH] liblockdep: Use realpath for srctree and objtree

[Wang Nan]

If BUILD_SRC or CURDIR contains tailing '/', the file names passed to gcc will
contain '//'. It will be contained .o's in debuginfo, then confuse debugedit:

https://bugzilla.redhat.com/show_bug.cgi?id=304121

This patch uses realpath command to makesure potential tailing '/'s are removed.

Signed-off-by: Wang Nan <wangnan0@xxxxxxxxxx>
Cc: Sasha Levin <sasha.levin@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Geng Hui <hui.geng@xxxxxxxxxx>

---
 tools/lib/lockdep/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/lib/lockdep/Makefile b/tools/lib/lockdep/Makefile
index da8b7aa..e638dd5 100644
--- a/tools/lib/lockdep/Makefile
+++ b/tools/lib/lockdep/Makefile
@@ -87,8 +87,8 @@ endif # BUILD_SRC
 # We process the rest of the Makefile if this is the final invocation of make
 ifeq ($(skip-makefile),)
 
-srctree		:= $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR))
-objtree		:= $(CURDIR)
+srctree		:= $(realpath $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR)))
+objtree		:= $(realpath $(CURDIR))
 src		:= $(srctree)
 obj		:= $(objtree)
 
-- 
1.8.4

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