perf tools: Define _GNU_SOURCE on pthread_attr_setaffinity_np feature check
authorJosh Boyer <jwboyer@fedoraproject.org>
Wed, 11 Feb 2015 16:24:05 +0000 (11:24 -0500)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 11 Feb 2015 20:38:55 +0000 (17:38 -0300)
The man page for pthread_attr_set_affinity_np states that _GNU_SOURCE
must be defined before pthread.h is included in order to get the proper
function declaration.  Define this in the Makefile.

Without this defined, the feature check fails on a Fedora system with
gcc5 and then the perf build later fails with conflicting prototypes for
the function.

Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Link: http://lkml.kernel.org/r/20150211162404.GA15522@hansolo.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/config/feature-checks/Makefile

index 42ac05aaf8ac1a8bf004c1e664aa10a1853111bc..b32ff3372514da7da33da49cfc2d52755f1db935 100644 (file)
@@ -49,7 +49,7 @@ test-hello.bin:
        $(BUILD)
 
 test-pthread-attr-setaffinity-np.bin:
-       $(BUILD) -Werror -lpthread
+       $(BUILD) -D_GNU_SOURCE -Werror -lpthread
 
 test-stackprotector-all.bin:
        $(BUILD) -Werror -fstack-protector-all