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-rw-r--r--lib/libc/include/unistd.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/libc/include/unistd.h b/lib/libc/include/unistd.h
index b9c9f5e..8b03b81 100644
--- a/lib/libc/include/unistd.h
+++ b/lib/libc/include/unistd.h
@@ -60,6 +60,11 @@ off_t lseek(int fildes, off_t offset, int whence);
pid_t getpid(void);
pid_t getppid(void);
+extern char *optarg;
+extern int optind, opterr, optopt;
+
+int getopt(int argc, char *argv[], const char *optstring);
+
__END_DECLS
#endif /* !_UNISTD_H */