linux-kernel - [PATCH v2] Fix objtool with clang

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Date:   Sun, 27 Nov 2016 21:43:46 -0500
From:   Peter Foley <pefoley2@...oley.com>
To:     linux-kernel@...r.kernel.org, jolsa@...hat.com, acme@...hat.com,
        wangnan0@...wei.com
Cc:     Peter Foley <pefoley2@...oley.com>
Subject: [PATCH v2] Fix objtool with clang

Clang doesn't support multiple arguments being passed to -Wp, so split
them.

Fixes this error:
HOSTCC   tools/objtool/fixdep.o
cat: tools/objtool/.fixdep.o.d: No such file or directory

v2:
rebased onto perf/core branch.

Signed-off-by: Peter Foley <pefoley2@...oley.com>
---
 tools/build/Build.include | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/build/Build.include b/tools/build/Build.include
index c4ae12a5d0a5..62dcf0c7aac2 100644
--- a/tools/build/Build.include
+++ b/tools/build/Build.include
@@ -89,12 +89,12 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)),             \
 # - per target C flags
 # - per object C flags
 # - BUILD_STR macro to allow '-D"$(variable)"' constructs
-c_flags_1 = -Wp,-MD,$(depfile),-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj))
+c_flags_1 = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj))
 c_flags_2 = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(c_flags_1))
 c_flags   = $(filter-out $(CFLAGS_REMOVE_$(obj)), $(c_flags_2))
-cxx_flags = -Wp,-MD,$(depfile),-MT,$@ $(CXXFLAGS) -D"BUILD_STR(s)=\#s" $(CXXFLAGS_$(basetarget).o) $(CXXFLAGS_$(obj))
+cxx_flags = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CXXFLAGS) -D"BUILD_STR(s)=\#s" $(CXXFLAGS_$(basetarget).o) $(CXXFLAGS_$(obj))
 
 ###
 ## HOSTCC C flags
 
-host_c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CHOSTFLAGS) -D"BUILD_STR(s)=\#s" $(CHOSTFLAGS_$(basetarget).o) $(CHOSTFLAGS_$(obj))
+host_c_flags = -Wp,-MD,$(depfile) -Wp,-MT,$@ $(CHOSTFLAGS) -D"BUILD_STR(s)=\#s" $(CHOSTFLAGS_$(basetarget).o) $(CHOSTFLAGS_$(obj))
-- 
2.11.0.rc2