diff --git a/llvm_build/llvm_build.vcxproj b/llvm_build/llvm_build.vcxproj
index 37dcbf9aaa..7f89b0310c 100644
--- a/llvm_build/llvm_build.vcxproj
+++ b/llvm_build/llvm_build.vcxproj
@@ -39,9 +39,9 @@
   </ImportGroup>
   <PropertyGroup Label="UserMacros">
     <CmakeReleaseCLI>call vsdevcmd.bat -arch=amd64
-      cmake -G Ninja -DCMAKE_BUILD_TYPE="Release" -DCMAKE_INSTALL_PREFIX="./Release" -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_DEFAULT_TARGET_TRIPLE:STRING=x86_64-pc-windows-msvc -DLLVM_HOST_TRIPLE:STRING=x86_64-pc-windows-msvc -DLLVM_BUILD_RUNTIME=OFF -DLLVM_BUILD_TOOLS=OFF -DLLVM_INCLUDE_DOCS=OFF -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_TOOLS=OFF -DLLVM_INCLUDE_UTILS=OFF -DCMAKE_SYSTEM_VERSION=6.1 -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON -DCMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION=$(WindowsTargetPlatformVersion) -DLLVM_USE_CRT_DEBUG=MTd -DLLVM_USE_CRT_RELEASE=MT ../llvm</CmakeReleaseCLI>
+      cmake -G Ninja -DCMAKE_CXX_COMPILER="cl.exe" -DCMAKE_C_COMPILER="cl.exe" -DCMAKE_BUILD_TYPE="Release" -DCMAKE_INSTALL_PREFIX="./Release" -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_DEFAULT_TARGET_TRIPLE:STRING=x86_64-pc-windows-msvc -DLLVM_HOST_TRIPLE:STRING=x86_64-pc-windows-msvc -DLLVM_BUILD_RUNTIME=OFF -DLLVM_BUILD_TOOLS=OFF -DLLVM_INCLUDE_DOCS=OFF -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_TOOLS=OFF -DLLVM_INCLUDE_UTILS=OFF -DCMAKE_SYSTEM_VERSION=6.1 -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON -DCMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION=$(WindowsTargetPlatformVersion) -DLLVM_USE_CRT_DEBUG=MTd -DLLVM_USE_CRT_RELEASE=MT ../llvm</CmakeReleaseCLI>
     <CmakeDebugCLI>call vsdevcmd.bat -arch=amd64
-      cmake -G Ninja -DCMAKE_BUILD_TYPE="Debug" -DCMAKE_INSTALL_PREFIX="./Debug" -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_DEFAULT_TARGET_TRIPLE:STRING=x86_64-pc-windows-msvc -DLLVM_HOST_TRIPLE:STRING=x86_64-pc-windows-msvc -DLLVM_BUILD_RUNTIME=OFF -DLLVM_BUILD_TOOLS=OFF -DLLVM_INCLUDE_DOCS=OFF -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_TOOLS=OFF -DLLVM_INCLUDE_UTILS=OFF -DCMAKE_SYSTEM_VERSION=6.1 -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON -DCMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION=$(WindowsTargetPlatformVersion) -DLLVM_USE_CRT_DEBUG=MTd -DLLVM_USE_CRT_RELEASE=MT ../llvm</CmakeDebugCLI>
+      cmake -G Ninja -DCMAKE_CXX_COMPILER="cl.exe" -DCMAKE_C_COMPILER="cl.exe" -DCMAKE_BUILD_TYPE="Debug" -DCMAKE_INSTALL_PREFIX="./Debug" -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_DEFAULT_TARGET_TRIPLE:STRING=x86_64-pc-windows-msvc -DLLVM_HOST_TRIPLE:STRING=x86_64-pc-windows-msvc -DLLVM_BUILD_RUNTIME=OFF -DLLVM_BUILD_TOOLS=OFF -DLLVM_INCLUDE_DOCS=OFF -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_TOOLS=OFF -DLLVM_INCLUDE_UTILS=OFF -DCMAKE_SYSTEM_VERSION=6.1 -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON -DCMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION=$(WindowsTargetPlatformVersion) -DLLVM_USE_CRT_DEBUG=MTd -DLLVM_USE_CRT_RELEASE=MT ../llvm</CmakeDebugCLI>
     <CmakeCleanCLI>echo Cleaning..
       for /F "delims= eol=|" %%f in ('
       dir /b ^| findstr /V "[^.]*\build[^.]*\.vcxproj"') do (