attempt to fix macos build

Author: Congyuwang

.github/workflows/CI.yml

@@ -41,10 +41,9 @@ jobs:
           export CXX=${HOMEBREW_PREFIX}/opt/llvm@19/bin/clang++
           export AR=${HOMEBREW_PREFIX}/opt/llvm@19/bin/llvm-ar
           export CFLAGS="-flto=thin -O3"
-          export CXXFLAGS="-flto=thin -O3"
+          export CXXFLAGS="-flto=thin -O3 -I${HOMEBREW_PREFIX}/opt/llvm/include"
           export LLD=${HOMEBREW_PREFIX}/opt/lld/bin/ld64.lld
           export LDFLAGS="-L${HOMEBREW_PREFIX}/opt/llvm/lib -L${HOMEBREW_PREFIX}/opt/llvm/lib/c++ -L${HOMEBREW_PREFIX}/opt/llvm/lib/unwind -lunwind"
-          export CPPFLAGS="-I${HOMEBREW_PREFIX}/opt/llvm/include"
           export RUSTFLAGS="-Clinker-plugin-lto -Clinker=$PWD/macos-linker.sh -Clink-arg=-fuse-ld=${LLD}"
           maturin build --release --target aarch64-apple-darwin --out dist -i ${{ matrix.py_version }}
           maturin build --release --target x86_64-apple-darwin --out dist -i ${{ matrix.py_version }}

.github/workflows/PR.yml

@@ -41,10 +41,9 @@ jobs:
           export CXX=${HOMEBREW_PREFIX}/opt/llvm@19/bin/clang++
           export AR=${HOMEBREW_PREFIX}/opt/llvm@19/bin/llvm-ar
           export CFLAGS="-flto=thin -O3"
-          export CXXFLAGS="-flto=thin -O3"
+          export CXXFLAGS="-flto=thin -O3 -I${HOMEBREW_PREFIX}/opt/llvm/include"
           export LLD=${HOMEBREW_PREFIX}/opt/lld/bin/ld64.lld
           export LDFLAGS="-L${HOMEBREW_PREFIX}/opt/llvm/lib -L${HOMEBREW_PREFIX}/opt/llvm/lib/c++ -L${HOMEBREW_PREFIX}/opt/llvm/lib/unwind -lunwind"
-          export CPPFLAGS="-I${HOMEBREW_PREFIX}/opt/llvm/include"
           export RUSTFLAGS="-Clinker-plugin-lto -Clinker=$PWD/macos-linker.sh -Clink-arg=-fuse-ld=${LLD}"
           maturin build --release --target aarch64-apple-darwin --out dist -i ${{ matrix.py_version }}
           maturin build --release --target x86_64-apple-darwin --out dist -i ${{ matrix.py_version }}