Attempt to build with vcpkg

Author: tstellar

.github/workflows/release-binaries.yml

@@ -168,7 +168,8 @@ jobs:
           # at Microsoft.Tools.WindowsInstallerXml.CabinetBuilder.CreateCabinet(CabinetWorkItem cabinetWorkItem)
           #libxml2_prefix="/c/vcpkg/packages/libxml2_x64-windows-static/"
           target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_ENABLE_LTO=OFF"
-          target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_LIBXML2_PREFIX=/s/libxml-install/"
+          #target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_LIBXML2_PREFIX=/s/libxml-install/"
+          target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_LIBXML2_PREFIX=/c/vcpkg/packages/libxml2_x64-windows-static/"
         fi
 
         echo "target-cmake-flags=$target_cmake_flags" >> $GITHUB_OUTPUT

clang/cmake/caches/Release.cmake

@@ -41,7 +41,7 @@ if(${CMAKE_HOST_SYSTEM_NAME} MATCHES "Windows")
   if (LLVM_RELEASE_LIBXML2_PREFIX)
     # Enable libxml2 with static linking.  This is necessary for llvm-mt.
     set_instrument_and_final_stage_var(LLVM_ENABLE_LIBXML2 "FORCE_ON" STRING)
-    set_instrument_and_final_stage_var(LIBXML2_LIBRARIES "${LLVM_RELEASE_LIBXML2_PREFIX}/lib/libxml2s.lib" STRING)
+    set_instrument_and_final_stage_var(LIBXML2_LIBRARIES "${LLVM_RELEASE_LIBXML2_PREFIX}/lib/libxml2.lib" STRING)
     set_instrument_and_final_stage_var(LLVM_ENABLE_LIBXML2 "${LLVM_RELEASE_LIBXML2_PREFIX}/include/libxml2" STRING)
     set_instrument_and_final_stage_var(LIBXML2_DEFINITIONS "-DLIBXML_STATIC" STRING)
   endif()