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-rw-r--r--src/core/support/log_linux.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/core/support/log_linux.c b/src/core/support/log_linux.c
index a0307e1a9a..a64faa98bd 100644
--- a/src/core/support/log_linux.c
+++ b/src/core/support/log_linux.c
@@ -31,8 +31,14 @@
*
*/
+#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE
+#endif
+
+#ifndef _GNU_SOURCE
#define _GNU_SOURCE
+#endif
+
#include <grpc/support/port_platform.h>
#ifdef GPR_LINUX