fix macos build

Author: 0xGeorgii

.github/workflows/build-llvm-artifacts.yml

@@ -74,6 +74,8 @@ jobs:
               -DCMAKE_INSTALL_PREFIX="${{ github.workspace }}/llvm-install" \
               ../llvm
           elif [ "$RUNNER_OS" == "macOS" ]; then
+            # Get the macOS SDK path
+            SDK_PATH=$(xcrun --show-sdk-path)
             cmake -G Ninja \
               -DCMAKE_BUILD_TYPE=Release \
               -DLLVM_TARGETS_TO_BUILD="WebAssembly;X86" \
@@ -90,6 +92,9 @@ jobs:
               -DLLVM_TOOL_LLVM_CONFIG_BUILD=ON \
               -DHAVE_CXX_ATOMICS_WITHOUT_LIB=ON \
               -DHAVE_CXX_ATOMICS64_WITHOUT_LIB=ON \
+              -DCMAKE_OSX_SYSROOT="$SDK_PATH" \
+              -DCMAKE_C_FLAGS="-isysroot $SDK_PATH" \
+              -DCMAKE_CXX_FLAGS="-isysroot $SDK_PATH" \
               -DCMAKE_INSTALL_PREFIX="${{ github.workspace }}/llvm-install" \
               ../llvm
           else