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perf tools: Define _GNU_SOURCE on pthread_attr_setaffinity_np feature check

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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>
This commit is contained in:
Josh Boyer 2015-02-11 11:24:05 -05:00 committed by Arnaldo Carvalho de Melo
parent 5cb113fd84
commit 39f5704399
1 changed files with 1 additions and 1 deletions
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2
tools/perf/config/feature-checks/Makefile
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@ -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