Fix compile errors on FFmpeg

Author: hwangsihu

Library/TeamTalkLib/build/ffmpeg/0001-Fix-MSVC-detection-for-non-English-locales.patch

@@ -0,0 +1,31 @@
+From a061de6d24372b3e1f6db25c12ae6179d5fe03c0 Mon Sep 17 00:00:00 2001
+From: Sihu Hwang <129564966+hwangsihu@users.noreply.github.com>
+Date: Sun, 29 Mar 2026 23:54:16 +0900
+Subject: [PATCH] Fix MSVC detection for non-English locales
+
+---
+ configure | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/configure b/configure
+index 175969427..43e8c13a6 100755
+--- a/configure
++++ b/configure
+@@ -5365,12 +5365,12 @@ probe_cc(){
+         _flags_filter=msvc_flags_link
+         _ld_lib='%.lib'
+         _ld_path='-libpath:'
+-    elif VSLANG=1033 $_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 VSLANG=1033 $_cc -nologo- 2>&1 | grep -q ^Microsoft; then
++        if VSLANG=1033 $_cc -nologo- 2>&1 | grep -q Microsoft; then
+             # Depending on the tool (cl.exe or link.exe), the version number
+             # is printed on the first line of stderr or stdout
+-            _ident=$(VSLANG=1033 $_cc 2>&1 | grep ^Microsoft | head -n1 | tr -d '\r')
++            _ident=$(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
+--
+2.53.0.windows.1

Library/TeamTalkLib/build/ffmpeg/CMakeLists.txt

@@ -353,9 +353,15 @@ elseif (MSVC)
   if (${CMAKE_SIZEOF_VOID_P} EQUAL 8)
     set(FFMPEG_ARCH x86_64)
     set(FFMPEG_TARGET_OS win64)
+    set(FFMPEG_CROSS_COMPILE "")
   else()
     set(FFMPEG_ARCH x86)
     set(FFMPEG_TARGET_OS win32)
+    if (CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "AMD64" OR CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "x86_64")
+      set(FFMPEG_CROSS_COMPILE "--enable-cross-compile --host-cc=cl.exe")
+    else()
+      set(FFMPEG_CROSS_COMPILE "")
+    endif()
   endif()
 
   if (TOOLCHAIN_BUILD_EXTERNALPROJECTS)
@@ -368,6 +374,7 @@ elseif (MSVC)
       GIT_SHALLOW       TRUE
       GIT_CONFIG        core.autocrlf=false core.eol=lf
       UPDATE_COMMAND    ""
+      PATCH_COMMAND     git apply --ignore-whitespace ${CMAKE_CURRENT_LIST_DIR}/0001-Fix-MSVC-detection-for-non-English-locales.patch
       PREFIX            ${TOOLCHAIN_BUILD_PREFIX}/ffmpeg
       INSTALL_DIR       ${TOOLCHAIN_INSTALL_PREFIX_FFMPEG}
       CONFIGURE_COMMAND ""

Library/TeamTalkLib/build/ffmpeg/build-ffmpeg-win.bat_sample

@@ -1,4 +1,5 @@
 SET PATH=@NASM_EXE_DIRECTORY_NATIVE@;%PATH%
+SET VSLANG=1033
 SET MSYS2_PATH_TYPE=inherit
 SET CHERE_INVOKING=1
-@BASH_EXE_PATH@ --login -c "./configure --prefix=@FFMPEG_INSTALL_DIR@ --toolchain=msvc --arch=@FFMPEG_ARCH@ --target-os=@FFMPEG_TARGET_OS@ --disable-doc --disable-programs --disable-autodetect --disable-debug && make @TOOLCHAIN_BUILD_MAKEJOBS@ && make install"
+@BASH_EXE_PATH@ --login -c "export VSLANG=1033 && ./configure --prefix=@FFMPEG_INSTALL_DIR@ --toolchain=msvc --arch=@FFMPEG_ARCH@ --target-os=@FFMPEG_TARGET_OS@ @FFMPEG_CROSS_COMPILE@ --disable-doc --disable-programs --disable-autodetect --disable-debug && make @TOOLCHAIN_BUILD_MAKEJOBS@ && make install"