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-rw-r--r--gprof/gconfig.in5
1 files changed, 5 insertions, 0 deletions
diff --git a/gprof/gconfig.in b/gprof/gconfig.in
index 579750c..c6886d9 100644
--- a/gprof/gconfig.in
+++ b/gprof/gconfig.in
@@ -70,3 +70,8 @@
/* Version number of package */
#undef VERSION
+
+/* Enable GNU extensions on systems that have them. */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif