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-rw-r--r--config.h.in5
1 files changed, 5 insertions, 0 deletions
diff --git a/config.h.in b/config.h.in
index 0e3c0e40..5094d463 100644
--- a/config.h.in
+++ b/config.h.in
@@ -234,6 +234,11 @@
/* Number of bits in a file offset, on hosts where this is settable. */
#undef _FILE_OFFSET_BITS
+/* Enable GNU extensions on systems that have them. */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+
/* Define for large files, on AIX-style hosts. */
#undef _LARGE_FILES