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-rw-r--r--newlib/libc/include/sys/signal.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/newlib/libc/include/sys/signal.h b/newlib/libc/include/sys/signal.h
index 4e3be1ccf..3d6ba0831 100644
--- a/newlib/libc/include/sys/signal.h
+++ b/newlib/libc/include/sys/signal.h
@@ -12,7 +12,10 @@ extern "C" {
/* #ifndef __STRICT_ANSI__*/
+/* Cygwin defines it's own sigset_t in include/cygwin/signal.h */
+#ifndef __CYGWIN__
typedef unsigned long sigset_t;
+#endif
#if defined(__rtems__)