* [tip:perf/core] objtool: Avoid checking code drift on busybox's diff
@ 2016-07-14 7:02 tip-bot for Arnaldo Carvalho de Melo
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From: tip-bot for Arnaldo Carvalho de Melo @ 2016-07-14 7:02 UTC (permalink / raw)
To: linux-tip-commits
Cc: hpa, adrian.hunter, wangnan0, namhyung, linux-kernel, mingo,
jolsa, jpoimboe, acme, tglx, dsahern
Commit-ID: 1a4bf28573c82b4cbeb4e8d3326b24a93ed64c8e
Gitweb: http://git.kernel.org/tip/1a4bf28573c82b4cbeb4e8d3326b24a93ed64c8e
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Wed, 13 Jul 2016 15:33:54 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 13 Jul 2016 23:08:54 -0300
objtool: Avoid checking code drift on busybox's diff
That doesn't have -I to match lines.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-1zqv1h6okt70e2huokkdtf1u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/objtool/Makefile | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index f094f3c..9a3110c 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -41,8 +41,11 @@ include $(srctree)/tools/build/Makefile.include
$(OBJTOOL_IN): fixdep FORCE
@$(MAKE) $(build)=objtool
+# Busybox's diff doesn't have -I, avoid warning in that case
+#
$(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
- @(test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
+ @(diff -I 2>&1 | grep -q 'option requires an argument' && \
+ test -d ../../kernel -a -d ../../tools -a -d ../objtool && (( \
diff -I'^#include' arch/x86/insn/insn.c ../../arch/x86/lib/insn.c >/dev/null && \
diff -I'^#include' arch/x86/insn/inat.c ../../arch/x86/lib/inat.c >/dev/null && \
diff arch/x86/insn/x86-opcode-map.txt ../../arch/x86/lib/x86-opcode-map.txt >/dev/null && \
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