use mac-15 (arm)

Author: peter-urban

.github/workflows/ci-macos-clang.yml

@@ -23,10 +23,8 @@ jobs:
       matrix:
         library_type: [shared, static]
         cxx_compiler: ["$(brew --prefix llvm@18)/bin/clang++"] 
-        llvm: ["$(brew --prefix llvm@18)"]
-        boost: ["$(brew --prefix boost)"]
         libomp: ["$(brew --prefix libomp)"]         
-        os: [macos-14, macos-12]
+        os: [macos-15]
 
     # env does not work here because is resolved as string and not command 
     # env:
@@ -63,7 +61,8 @@ jobs:
         # git clone https://github.com/peter-urban/meson.git; cd meson; git checkout fix-openmp-dependency-for-clang-cl; pip install .; meson --version
     
     - name: configure meson
-      run: CXX=${{ matrix.llvm }}/bin/clang++  LDFLAGS="-L${{ matrix.llvm }}/lib/c++ -L${{ matrix.llvm }}/lib -undefined dynamic_lookup -Wl,-no_fixup_chains -Wl,-dead_strip -Wl,-rpath, ${{ matrix.llvm }}/lib/c++" CPPFLAGS="-I${{ matrix.llvm }}/include" meson setup builddir/ --default-library=${{matrix.library_type}} -D"python.install_env=auto"
+      run: |
+        meson setup builddir -Dpython.install_env=auto
       
     - name: compile project
       run: meson compile -C builddir/