fix(build): update Windows build environment setup for llama.cpp

Author: Gioee

.github/workflows/main.yml

@@ -309,11 +309,10 @@ jobs:
         run: |
           call "C:\Program Files (x86)\Intel\oneAPI\setvars.bat" intel64 --force
           call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvarsall.bat" x64
-          set CUDAHOSTCXX=cl.exe
+          set "PATH=%VCToolsInstallDir%bin\Hostx64\x64;%WindowsSdkBinPath%x64;%PATH%"
+          set "PATH=%PATH:C:\msys64\usr\bin;=%"
+          set "PATH=%PATH:C:\msys64\mingw64\bin;=%"
           make build/llama.cpp.stamp ${{ matrix.make }} LLAMA_ARGS="--target ggml"
-          #make build/llama.cpp.stamp ${{ matrix.make }} LLAMA_ARGS="--target common"
-          #make build/llama.cpp.stamp ${{ matrix.make }} LLAMA_ARGS="--target llama"
-          #make build/llama.cpp.stamp ${{ matrix.make }} LLAMA_ARGS="--target ggml-base"
 
       - name: copy backend modules to dist
         if: false #matrix.name == 'windows-gpu'