Add support for getopt/getopt_long

1 files changed, 49 insertions, 0 deletions

diff --git a/system/lib/libc/gen/err.c b/system/lib/libc/gen/err.c
new file mode 100644
index 00000000..218a3bfc
--- /dev/null
+++ b/system/lib/libc/gen/err.c
@@ -0,0 +1,49 @@
+/*	$OpenBSD: err.c,v 1.11 2012/12/05 23:19:59 deraadt Exp $ */
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <err.h>
+#include <stdarg.h>
+
+#define __dead __attribute__((__noreturn__))
+
+/* PRINTFLIKE2 */
+__dead void
+_err(int eval, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	_verr(eval, fmt, ap);
+	va_end(ap);
+}
+
+/* PRINTFLIKE2 */
+__dead void
+err(int eval, const char *fmt, ...) __attribute__((weak, alias("_err")));