[FFmpeg-devel] [PATCH] configure: Fix build with MSVC (PR #20156)

[quink <code@ffmpeg.org>]

PR #20156 opened by quink
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20156
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20156.patch

The copyright message of cl.exe doesn't always begin with Microsoft,
e.g., when local is Chinese.

Fix regression since 53da090ab7b.


From ab2596863dd0808422a6313b28d02fc2a1197fe1 Mon Sep 17 00:00:00 2001
From: Zhao Zhili <zhilizhao@tencent.com>
Date: Thu, 7 Aug 2025 21:47:21 +0800
Subject: [PATCH] configure: Fix build with MSVC

The copyright message of cl.exe doesn't always begin with Microsoft,
e.g., when local is Chinese.

Fix regression since 53da090ab7b.
---
 configure | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index 30e61c5bb5..712ed947ff 100755
--- a/configure
+++ b/configure
@@ -5158,12 +5158,12 @@ probe_cc(){
         _flags_filter=msvc_flags
         _ld_lib='lib%.a'
         _ld_path='-libpath:'
-    elif $_cc -nologo- 2>&1 | grep -q ^Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
+    elif VSLANG=1033 $_cc -nologo- 2>&1 | grep -q ^Microsoft || { $_cc -v 2>&1 | grep -q clang && $_cc -? > /dev/null 2>&1; }; then
         _type=msvc
-        if $_cc -nologo- 2>&1 | grep -q ^Microsoft; then
+        if VSLANG=1033 $_cc -nologo- 2>&1 | grep -q ^Microsoft; then
             # Depending on the tool (cl.exe or link.exe), the version number
             # is printed on the first line of stderr or stdout
-            _ident=$($_cc 2>&1 | grep ^Microsoft | head -n1 | tr -d '\r')
+            _ident=$(VSLANG=1033 $_cc 2>&1 | grep ^Microsoft | head -n1 | tr -d '\r')
         else
             _ident=$($_cc --version 2>/dev/null | head -n1 | tr -d '\r')
         fi
@@ -5273,7 +5273,7 @@ if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
     DEPCCFLAGS=$_flags
 fi
 
-if $ar 2>&1 | grep -q ^Microsoft; then
+if VSLANG=1033 $ar 2>&1 | grep -q ^Microsoft; then
     arflags="-nologo"
     ar_o='-out:$@'
 elif $ar 2>&1 | grep -q "\[D\] "; then
-- 
2.49.1

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