perf build: Force llvm/clang test compile output to .make.output

So we can see the output of feature compile in following files:

  tools/build/feature/test-llvm.make.output
  tools/build/feature/test-llvm-version.make.output
  tools/build/feature/test-clang.make.output

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180307155020.32613-20-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index f8ad640ffe5d..dac9563b5470 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -260,11 +260,13 @@ $(OUTPUT)test-llvm.bin:
                 -I$(shell $(LLVM_CONFIG) --includedir)          \
                 -L$(shell $(LLVM_CONFIG) --libdir)              \
                 $(shell $(LLVM_CONFIG) --libs Core BPF)         \
-                $(shell $(LLVM_CONFIG) --system-libs)
+                $(shell $(LLVM_CONFIG) --system-libs)           \
+                > $(@:.bin=.make.output) 2>&1
 
 $(OUTPUT)test-llvm-version.bin:
         $(BUILDXX) -std=gnu++11                                 \
-                -I$(shell $(LLVM_CONFIG) --includedir)
+                -I$(shell $(LLVM_CONFIG) --includedir)          \
+                > $(@:.bin=.make.output) 2>&1
 
 $(OUTPUT)test-clang.bin:
         $(BUILDXX) -std=gnu++11                                 \
@@ -274,7 +276,8 @@ $(OUTPUT)test-clang.bin:
                   -lclangFrontend -lclangEdit -lclangLex        \
                   -lclangAST -Wl,--end-group                    \
                 $(shell $(LLVM_CONFIG) --libs Core option)      \
-                $(shell $(LLVM_CONFIG) --system-libs)
+                $(shell $(LLVM_CONFIG) --system-libs)           \
+                > $(@:.bin=.make.output) 2>&1
 
 -include $(OUTPUT)*.d