build: avoid redefining _DEFAULT_SOURCE

Work around further glibc toolchain annoyances.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 4 insertions, 1 deletions

diff --git a/file.c b/file.c
index 2f829f1..b73fd47 100644
--- a/file.c
+++ b/file.c
@@ -17,7 +17,10 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#define _DEFAULT_SOURCE
+#ifndef _DEFAULT_SOURCE
+# define _DEFAULT_SOURCE
+#define
+
 #define _BSD_SOURCE
 #define _DARWIN_C_SOURCE
 #define _XOPEN_SOURCE 700