set-env.bat

@echo off

:: Reset and loop over arguments

set TARGET_CPU=
set TOOLCHAIN=
set CRT=
set CONFIGURATION=

:loop

if "%1" == "" goto :finalize
if /i "%1" == "x86" goto :x86
if /i "%1" == "i386" goto :x86
if /i "%1" == "amd64" goto :amd64
if /i "%1" == "x86_64" goto :amd64
if /i "%1" == "x64" goto :amd64
@REM if /i "%1" == "msvc10" goto :msvc10
@REM if /i "%1" == "msvc12" goto :msvc12
@REM if /i "%1" == "msvc14" goto :msvc14
@REM if /i "%1" == "msvc15" goto :msvc15
if /i "%1" == "msvc16" goto :msvc16
if /i "%1" == "msvc17" goto :msvc17
if /i "%1" == "libcmt" goto :libcmt
if /i "%1" == "msvcrt" goto :msvcrt
if /i "%1" == "dbg" goto :dbg
if /i "%1" == "debug" goto :dbg
if /i "%1" == "rel" goto :release
if /i "%1" == "release" goto :release

echo Invalid argument: '%1'
exit -1

:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

:: Platform

:x86
set TARGET_CPU=x86
set CMAKE_GENERATOR_SUFFIX= x86
set CMAKE_ARCH_OPTIONS=-A Win32
shift
goto :loop

:amd64
set TARGET_CPU=amd64
set CMAKE_GENERATOR_SUFFIX=
set CMAKE_ARCH_OPTIONS=-A x64
shift
goto :loop

:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

:: Toolchain

:msvc10
set TOOLCHAIN=msvc10
set CMAKE_GENERATOR=Visual Studio 10 2010
shift
goto :loop

:msvc12
set TOOLCHAIN=msvc12
set CMAKE_GENERATOR=Visual Studio 12 2013
shift
goto :loop

:msvc14
set TOOLCHAIN=msvc14
set CMAKE_GENERATOR=Visual Studio 14 2015
shift
goto :loop

:msvc15
set TOOLCHAIN=msvc15
set CMAKE_GENERATOR=Visual Studio 15 2017
shift
goto :loop

:msvc16
set TOOLCHAIN=msvc16
set CMAKE_GENERATOR=Visual Studio 16 2019
shift
goto :loop

:msvc17
set TOOLCHAIN=msvc17
set MSVC_TOOLSET_VERSION=143
set CMAKE_GENERATOR=Visual Studio 17 2022
shift
goto :loop

:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

:: CRT

:libcmt
set CRT=libcmt
set LLVM_CRT=MT
set CMAKE_CRT="MultiThreaded$<$<CONFIG:Debug>:Debug>"
shift
goto :loop

:msvcrt
set CRT=msvcrt
set LLVM_CRT=MD
set CMAKE_CRT="MultiThreaded$<$<CONFIG:Debug>:Debug>DLL"
shift
goto :loop

:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

:: Configuration

:release
set CONFIGURATION=Release
set DEBUG_SUFFIX=
set LLVM_CMAKE_CONFIGURE_EXTRA_FLAGS=
set RUNTIME_CMAKE_CONFIGURE_EXTRA_FLAGS=
set CLANG_CMAKE_CONFIGURE_EXTRA_FLAGS=
shift
goto :loop

:: don't try to build Debug tools -- executables will be huge and not really
:: essential (whoever needs tools, can just download a Release build)

:dbg
set CONFIGURATION=Debug
set DEBUG_SUFFIX=-dbg
set LLVM_CMAKE_CONFIGURE_EXTRA_FLAGS=-DLLVM_BUILD_TOOLS=OFF -DLLVM_ENABLE_ASSERTIONS=ON
set RUNTIME_CMAKE_CONFIGURE_EXTRA_FLAGS=
set CLANG_CMAKE_CONFIGURE_EXTRA_FLAGS=-DCLANG_BUILD_TOOLS=OFF
shift
goto :loop

::..............................................................................

:finalize

set WORKING_DRIVE=%HOMEDRIVE%
set WORKING_DIR=%HOMEDRIVE%%HOMEPATH%

set LLVM_RELEASE_TAG=llvm-%LLVM_VERSION%

if "%TARGET_CPU%" == "" goto :amd64
if "%TOOLCHAIN%" == "" goto :msvc17
if "%CRT%" == "" goto :libcmt
if "%CONFIGURATION%" == "" goto :release

set TAR_SUFFIX=

set BASE_DOWNLOAD_URL=https://github.com/llvm/llvm-project/releases/download/llvmorg-%LLVM_VERSION%

set LLVM_MASTER_URL=https://github.com/llvm/llvm-project
set LLVM_DOWNLOAD_FILE=llvm-project-%LLVM_VERSION%.src.tar.xz
set LLVM_DOWNLOAD_URL=%BASE_DOWNLOAD_URL%/%LLVM_DOWNLOAD_FILE%
set LLVM_RELEASE_NAME=llvm-%LLVM_VERSION%-windows-%TARGET_CPU%-%TOOLCHAIN%-%CRT%%DEBUG_SUFFIX%
set LLVM_RELEASE_FILE=%LLVM_RELEASE_NAME%.7z
set LLVM_RELEASE_DIR=%WORKING_DIR%\%LLVM_RELEASE_NAME%
set LLVM_RELEASE_DIR=%LLVM_RELEASE_DIR:\=/%
set LLVM_RELEASE_URL=https://github.com/c3lang/win-llvm/releases/download/%LLVM_RELEASE_TAG%/%LLVM_RELEASE_FILE%

set LLVM_CMAKE_CONFIGURE_FLAGS= ^
	-G "%CMAKE_GENERATOR%%CMAKE_GENERATOR_SUFFIX%" ^
	-Thost=x64 ^
	-DCMAKE_INSTALL_PREFIX=%LLVM_RELEASE_DIR% ^
	-DCMAKE_DISABLE_FIND_PACKAGE_LibXml2=TRUE ^
	-DCMAKE_MSVC_RUNTIME_LIBRARY=%CMAKE_CRT% ^
	-DCMAKE_MT=mt ^
	-DLLVM_ENABLE_TERMINFO=OFF ^
	-DLLVM_ENABLE_ZLIB=OFF ^
	-DLLVM_INCLUDE_BENCHMARKS=OFF ^
	-DLLVM_INCLUDE_DOCS=OFF ^
	-DLLVM_ENABLE_PROJECTS=lld ^
	-DLLVM_INCLUDE_EXAMPLES=OFF ^
	-DLLVM_INCLUDE_RUNTIMES=OFF ^
	-DLLVM_INCLUDE_TESTS=OFF ^
	-DLLVM_INCLUDE_UTILS=OFF ^
	%LLVM_CMAKE_CONFIGURE_EXTRA_FLAGS%

set RUNTIMES_CMAKE_CONFIGURE_FLAGS= ^
	-G "%CMAKE_GENERATOR%%CMAKE_GENERATOR_SUFFIX%" ^
	-Thost=x64 ^
	-DCMAKE_INSTALL_PREFIX=%LLVM_RELEASE_DIR%/lib/clang/%LLVM_MAJOR_VERSION% ^
	-DCMAKE_MSVC_RUNTIME_LIBRARY=%CMAKE_CRT% ^
	-DCMAKE_MT=mt ^
	-DCMAKE_C_COMPILER_TARGET="x86_64-pc-windows-msvc" ^
	-DLLVM_ENABLE_RUNTIMES=compiler-rt ^
	-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON ^
    -DCOMPILER_RT_BUILD_BUILTINS=OFF ^
    %RUNTIME_CMAKE_CONFIGURE_EXTRA_FLAGS%

set CMAKE_BUILD_FLAGS= ^
	--config %CONFIGURATION% ^
	-- ^
	/nologo ^
	/verbosity:minimal ^
	/maxcpucount ^
	/consoleloggerparameters:Summary

set DEPLOY_FILE=%LLVM_RELEASE_FILE%

echo ---------------------------------------------------------------------------
echo LLVM_VERSION:                %LLVM_VERSION%
echo LLVM_MAJOR_VERSION:          %LLVM_MAJOR_VERSION%
echo LLVM_MASTER_URL:             %LLVM_MASTER_URL%
echo LLVM_DOWNLOAD_URL:           %LLVM_DOWNLOAD_URL%
echo LLVM_RELEASE_FILE:           %LLVM_RELEASE_FILE%
echo LLVM_RELEASE_URL:            %LLVM_RELEASE_URL%
echo LLVM_CMAKE_CONFIGURE_FLAGS:  %LLVM_CMAKE_CONFIGURE_FLAGS%
echo ---------------------------------------------------------------------------
echo RUNTIMES_CMAKE_CONFIGURE_FLAGS:  %RUNTIMES_CMAKE_CONFIGURE_FLAGS%
echo ---------------------------------------------------------------------------
echo DEPLOY_FILE: %DEPLOY_FILE%
echo ---------------------------------------------------------------------------