tools/perf/build: Split out feature check: 'backtrace'

Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-ihnwe6cvglVkudyvcavP1wql@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 44affb5..c0c8344 100644 (file)
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -124,6 +124,7 @@ FEATURE_TESTS =                             \
        strlcpy                         \
        libbfd                          \
        on-exit                         \
+       backtrace                       \
        libnuma
 
 $(foreach test,$(FEATURE_TESTS),$(call feature_check,$(test),$(test)))
@@ -448,7 +449,7 @@ ifndef NO_ON_EXIT
 endif
 
 ifndef NO_BACKTRACE
-  ifeq ($(call try-cc,$(SOURCE_BACKTRACE),,-DHAVE_BACKTRACE_SUPPORT),y)
+  ifeq ($(feature-backtrace), 1)
     CFLAGS += -DHAVE_BACKTRACE_SUPPORT
   endif
 endif

diff --git a/tools/perf/config/feature-checks/Makefile b/tools/perf/config/feature-checks/Makefile
index 20f1b8c..0e4dbc2 100644 (file)
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -22,6 +22,7 @@ FILES=                                        \
        test-strlcpy                    \
        test-libbfd                     \
        test-on-exit                    \
+       test-backtrace                  \
        test-libnuma
 
 CC := $(CC) -MD
@@ -124,6 +125,9 @@ test-libbfd:
 test-on-exit:
        $(BUILD)
 
+test-backtrace:
+       $(BUILD)
+
 -include *.d */*.d
 
 ###############################

diff --git a/tools/perf/config/feature-checks/test-backtrace.c b/tools/perf/config/feature-checks/test-backtrace.c
new file mode 100644 (file)
index 0000000..5b79468
--- /dev/null
+++ b/tools/perf/config/feature-checks/test-backtrace.c
@@ -0,0 +1,10 @@
+#include <execinfo.h>
+#include <stdio.h>
+
+int main(void)
+{
+       backtrace(NULL, 0);
+       backtrace_symbols(NULL, 0);
+
+       return 0;
+}