Add Build Tools 2022 support and update safe PATH in build script and docs

Author: seiya-git

.gitignore

@@ -30,6 +30,7 @@ VSNASM/
 VSYASM/
 libass*
 testbuild.bat
+run_temp_*
 
 #*/build/.vs
 build_mingw/*

build_msvc.cmd

@@ -4,19 +4,22 @@ setlocal EnableExtensions
 :: 1. DETECT VISUAL STUDIO (with parameter hint)
 :: =====================================================================
 :: Usage (without parameter defaults to VS2022)
-:: build_msvc.bat 2022
-:: build_msvc.bat 2026
-:: build_msvc.bat 2026v143
+:: build_msvc.bat VS2022
+:: build_msvc.bat BT2022
+:: build_msvc.bat VS2026
+:: build_msvc.bat VS2026v143
 
 set "HINT=%1"
 set "VS_TOOLSET="
 
+set "BT2022_PATH=C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Auxiliary\Build\vcvarsall.bat"
 set "VS2022_PATH=C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat"
 set "VS2026_PATH=C:\Program Files\Microsoft Visual Studio\18\Community\VC\Auxiliary\Build\vcvarsall.bat"
 
-if "%HINT%"=="2026v143" goto :try_2026v143
-if "%HINT%"=="2026" goto :try_2026
-if "%HINT%"=="2022" goto :try_2022
+if "%HINT%"=="VS2026v143" goto :try_2026v143
+if "%HINT%"=="VS2026" goto :try_2026
+if "%HINT%"=="BT2022" goto :try_2022BT
+if "%HINT%"=="VS2022" goto :try_2022
 
 :try_2022
 if exist "%VS2022_PATH%" (
@@ -26,6 +29,14 @@ if exist "%VS2022_PATH%" (
     goto :found_vs
 )
 
+:try_2022BT
+if exist "%BT2022_PATH%" (
+    set "VCVARS=%BT2022_PATH%"
+    set "VS_GEN=Visual Studio 17 2022"
+    echo [INFO] Selected Visual Studio Build Tools 2022
+    goto :found_vs
+)
+
 :try_2026
 if exist "%VS2026_PATH%" (
     set "VCVARS=%VS2026_PATH%"
@@ -50,7 +61,7 @@ if not defined VCVARS (
 )
 
 :found_vs
-set "SAFE_PATH=C:\Windows\System32;C:\Windows;C:\Program Files\Meson;%LocalAppData%\Microsoft\WinGet\Links"
+set "SAFE_PATH=C:\Windows\System32;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows;C:\Program Files\Meson;%LocalAppData%\Microsoft\WinGet\Links;C:\Program Files\WinGet\Links"
 
 :: 2. BUILD 64-BIT (x64)
 echo ============================================================
@@ -115,6 +126,7 @@ echo if not exist "libass" ( echo [ERROR] libass folder not found! ^& exit /b 1
 echo cd libass >> "%TFILE%"
 echo set CC=cl >> "%TFILE%"
 echo set CXX=cl >> "%TFILE%"
+echo meson wrap update-db >> "%TFILE%"
 echo meson setup %BDIR% --wrap-mode=forcefallback -Ddefault_library=static -Dbuildtype=release -Dasm=enabled -Db_vscrt=static_from_buildtype --prefix=%PREFIX% --wipe ^|^| exit /b 1 >> "%TFILE%"
 echo meson compile -C %BDIR% ^|^| exit /b 1 >> "%TFILE%"
 echo meson install -C %BDIR% ^|^| exit /b 1 >> "%TFILE%"

docs/BUILD.md

@@ -78,7 +78,7 @@ These all co-exist and mess up each other's paths and environment variables, and
 
 Open a standard CMD and run (Isolate PATH to avoid MSYS2/MinGW conflicts):
 ```cmd
-set PATH=C:\Windows\System32;C:\Windows;C:\Program Files\Meson;%LocalAppData%\Microsoft\WinGet\Links
+set PATH=C:\Windows\System32;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows;C:\Program Files\Meson;%LocalAppData%\Microsoft\WinGet\Links;C:\Program Files\WinGet\Links
 ```
 
 And these (adjust path for your version) (default: 64-bit)
@@ -135,6 +135,7 @@ When you want non-standard choice (VS 2026 with v143 toolset with specific versi
 cd libass
 set CC=cl
 set CXX=cl
+meson wrap update-db
 meson setup build/x64 --wrap-mode=forcefallback -Ddefault_library=static -Dbuildtype=release -Dasm=enabled -Db_vscrt=static_from_buildtype -Dc_std=c11 -Dcpp_std=c++17 --prefix=C:/lib64
 meson compile -C build/x64
 meson install -C build/x64