GitHub Actions: bump macOS clang to 18

.github/workflows/cmake.yml

@@ -36,7 +36,7 @@ jobs:
 # ignore brew link warning, revert after https://github.com/actions/setup-python/issues/577 is fixed
       run: |
         brew update
-        brew install llvm@17 || true
+        brew install llvm@18 || true
         brew install ninja
         brew install cmake
 
@@ -63,9 +63,9 @@ jobs:
     - name: CMake Configure (macos64)
       if: ${{ matrix.os == 'macos-12' }}
       env:
-        CC: /usr/local/opt/llvm@17/bin/clang
-        CXX: /usr/local/opt/llvm@17/bin/clang++
-      run: cmake -B ${{env.build_directory}} -G "Ninja" -DCMAKE_BUILD_TYPE=${{env.build_type}} -DREDUMPER_VERSION_BUILD=${{github.run_number}} -DREDUMPER_CLANG_LINK_OPTIONS="-L/usr/local/opt/llvm@17/lib/c++"
+        CC: /usr/local/opt/llvm@18/bin/clang
+        CXX: /usr/local/opt/llvm@18/bin/clang++
+      run: cmake -B ${{env.build_directory}} -G "Ninja" -DCMAKE_BUILD_TYPE=${{env.build_type}} -DREDUMPER_VERSION_BUILD=${{github.run_number}} -DREDUMPER_CLANG_LINK_OPTIONS="-L/usr/local/opt/llvm@18/lib/c++"
 
     - name: CMake Build
       run: cmake --build ${{env.build_directory}} --config ${{env.build_type}}

CMakeLists.txt

@@ -66,17 +66,8 @@ add_definitions(-DREDUMPER_VERSION_MAJOR=${PROJECT_VERSION_MAJOR}
                 -DREDUMPER_VERSION_BUILD=${REDUMPER_VERSION_BUILD})
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    # -fexperimental-library is required for clang-16 as std::format is defined there
     add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-stdlib=libc++>)
     add_link_options(-stdlib=libc++ ${REDUMPER_CLANG_LINK_OPTIONS})
-
-    # silence implicit modules use warning
-    # TL;DR, this will be taken cared of by listing module dependencies explicitly (cmake)
-    # more information:
-    # https://github.com/llvm/llvm-project/issues/62707
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 17)
-        add_compile_options(-Wno-read-modules-implicitly)
-    endif()
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
     add_compile_options(-Wall -Wextra -Werror)