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-rw-r--r--newlib/libc/include/sys/unistd.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/newlib/libc/include/sys/unistd.h b/newlib/libc/include/sys/unistd.h
index 06773ccfd..b5ed650ed 100644
--- a/newlib/libc/include/sys/unistd.h
+++ b/newlib/libc/include/sys/unistd.h
@@ -120,10 +120,14 @@ int _EXFUN(unlink, (const char *__path ));
int _EXFUN(vhangup, (void ));
_READ_WRITE_RETURN_TYPE _EXFUN(write, (int __fd, const void *__buf, size_t __nbyte ));
+#ifdef __CYGWIN__
+# include <getopt.h>
+#else
extern char *optarg; /* getopt(3) external variables */
extern int optind, opterr, optopt;
int getopt(int, char * const [], const char *);
extern int optreset; /* getopt(3) external variable */
+#endif
#ifndef _POSIX_SOURCE
pid_t _EXFUN(vfork, (void ));