From 1f0aaece3ab7ab578de7e227ce46c45129b6b51e Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Thu, 10 Dec 2015 14:42:01 +0200
Subject: [PATCH] lib/utils/printf: Apply workaround for static linking with
 uclibc.

uclibc objects call __GI_vsnprintf().
---
 lib/utils/printf.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/utils/printf.c b/lib/utils/printf.c
index 34bf3eb0fc..51dc0a86e0 100644
--- a/lib/utils/printf.c
+++ b/lib/utils/printf.c
@@ -102,6 +102,12 @@ STATIC void strn_print_strn(void *data, const char *str, size_t len) {
     strn_print_env->remain -= len;
 }
 
+#ifdef __GNUC__
+// uClibc requires this alias to be defined, or there may be link errors
+// when linkings against it statically.
+int __GI_vsnprintf(char *str, size_t size, const char *fmt, va_list ap) __attribute__((weak, alias ("vsnprintf")));
+#endif
+
 int vsnprintf(char *str, size_t size, const char *fmt, va_list ap) {
     strn_print_env_t strn_print_env = {str, size};
     mp_print_t print = {&strn_print_env, strn_print_strn};