From 11bb5e10c36539bcc303ceaac6f88d9ecb66e07f Mon Sep 17 00:00:00 2001
From: Diego Biurrun <diego@biurrun.de>
Date: Fri, 13 Dec 2013 23:19:55 +0100
Subject: [PATCH] build: Define __printf__ to __gnu_printf__ on MinGW*/gcc

This is necessary to avoid GCC assuming MS style printf arguments.
---
 configure | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure b/configure
index 910c47d834..52993d71ec 100755
--- a/configure
+++ b/configure
@@ -3401,6 +3401,7 @@ esac
 
 probe_libc(){
     pfx=$1
+    pfx_no_=${pfx%_}
     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
         eval ${pfx}libc_type=uclibc
@@ -3416,6 +3417,8 @@ probe_libc(){
     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
         eval ${pfx}libc_type=mingw64
         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
+        eval test \$${pfx_no_}cc_type = "gcc" &&
+            add_${pfx}cppflags -D__printf__=__gnu_printf__
     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
         eval ${pfx}libc_type=mingw32
@@ -3423,6 +3426,8 @@ probe_libc(){
             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
             die "ERROR: MinGW32 runtime version must be >= 3.15."
         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
+        eval test \$${pfx_no_}cc_type = "gcc" &&
+            add_${pfx}cppflags -D__printf__=__gnu_printf__
     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
         eval ${pfx}libc_type=msvcrt
         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to