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-rw-r--r--newlib/libc/include/sys/config.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/newlib/libc/include/sys/config.h b/newlib/libc/include/sys/config.h
index 3084193f5..33e292735 100644
--- a/newlib/libc/include/sys/config.h
+++ b/newlib/libc/include/sys/config.h
@@ -178,6 +178,7 @@
#if defined(__CYGWIN__)
#include <cygwin/config.h>
+#define __LINUX_ERRNO_EXTENSIONS__ 1
#endif
#if defined(__rtems__)