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Subject[tip:perf/core] tools feature: Undef _GNU_SOURCE at the end of feature tests
Commit-ID:  0ec572f05721f430cf8470595da8c3d5e25567de
Gitweb: https://git.kernel.org/tip/0ec572f05721f430cf8470595da8c3d5e25567de
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Tue, 12 Feb 2019 09:56:57 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 14 Feb 2019 13:31:11 -0300

tools feature: Undef _GNU_SOURCE at the end of feature tests

Since we get all the tests in a single .c file for a first test,
tools/build/feature/test-all.c, if individual tests set that define and
fail to undef it at its end, then it the test-all.c build will fail due
to defining _GNU_SOURCE multiple times, getting us to the slow path,
so undef it at the end in tests that define it.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-w6s00jfo1xabgphzczadl59b@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/build/feature/test-get_current_dir_name.c | 1 +
tools/build/feature/test-libpython.c | 1 +
tools/build/feature/test-setns.c | 1 +
3 files changed, 3 insertions(+)

diff --git a/tools/build/feature/test-get_current_dir_name.c b/tools/build/feature/test-get_current_dir_name.c
index 573000f93212..c3c201691b4f 100644
--- a/tools/build/feature/test-get_current_dir_name.c
+++ b/tools/build/feature/test-get_current_dir_name.c
@@ -8,3 +8,4 @@ int main(void)
free(get_current_dir_name());
return 0;
}
+#undef _GNU_SOURCE
diff --git a/tools/build/feature/test-libpython.c b/tools/build/feature/test-libpython.c
index 0c1641b0d9a7..371c9113e49d 100644
--- a/tools/build/feature/test-libpython.c
+++ b/tools/build/feature/test-libpython.c
@@ -7,3 +7,4 @@ int main(void)

return 0;
}
+#undef _GNU_SOURCE
diff --git a/tools/build/feature/test-setns.c b/tools/build/feature/test-setns.c
index 1f714d2a658b..4a1581ae7a55 100644
--- a/tools/build/feature/test-setns.c
+++ b/tools/build/feature/test-setns.c
@@ -5,3 +5,4 @@ int main(void)
{
return setns(0, 0);
}
+#undef _GNU_SOURCE
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