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-rw-r--r--rtemsbsd/rtems/rtems-bsd-cxx.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/rtemsbsd/rtems/rtems-bsd-cxx.cc b/rtemsbsd/rtems/rtems-bsd-cxx.cc
index aadb25af..f6ec78e6 100644
--- a/rtemsbsd/rtems/rtems-bsd-cxx.cc
+++ b/rtemsbsd/rtems/rtems-bsd-cxx.cc
@@ -31,6 +31,7 @@
#define __STDC_LIMIT_MACROS
#define __STDC_CONSTANT_MACROS
+#undef _GNU_SOURCE
#include <machine/rtems-bsd-kernel-space.h>