macOS hangs generating dyndep file for cppfront compiler

[alexreinking]

The current CI setup fails to generate a dyndep file within 10+ minutes.

[alexreinking]

Might want to open a shell on the runner for a little bit to debug manually:

https://mxschmitt.github.io/action-tmate/

[HoiGe]

Some information (maybe helpful)

System Information

-- The CXX compiler identification is Clang 19.1.7
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /opt/homebrew/opt/llvm/bin/clang++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done (0.4s)
-- Generating done (0.0s)
-- Build files have been written to: /Users/hoige/VSCodeProjects/rlcpzon2/build

My Operation

When the -O3 flag is removed from the flags.make, the compilation will completes in 10 seconds.

Full build log

~/VSCodeProjects/rlcpzon2 5s 
❯ cmake --build build --target install
Change Dir: '/Users/hoige/VSCodeProjects/rlcpzon2/build'

Run Build Command(s): /opt/homebrew/bin/cmake -E env VERBOSE=1 /usr/bin/make -f Makefile install
/opt/homebrew/bin/cmake -S/Users/hoige/VSCodeProjects/rlcpzon2/cppfront -B/Users/hoige/VSCodeProjects/rlcpzon2/build --check-build-system CMakeFiles/Makefile.cmake 0
/opt/homebrew/bin/cmake -E cmake_progress_start /Users/hoige/VSCodeProjects/rlcpzon2/build/CMakeFiles /Users/hoige/VSCodeProjects/rlcpzon2/build//CMakeFiles/progress.marks
/Applications/Xcode.app/Contents/Developer/usr/bin/make  -f CMakeFiles/Makefile2 all
/Applications/Xcode.app/Contents/Developer/usr/bin/make  -f CMakeFiles/cppfront_cppfront.dir/build.make CMakeFiles/cppfront_cppfront.dir/depend
cd /Users/hoige/VSCodeProjects/rlcpzon2/build && /opt/homebrew/bin/cmake -E cmake_depends "Unix Makefiles" /Users/hoige/VSCodeProjects/rlcpzon2/cppfront /Users/hoige/VSCodeProjects/rlcpzon2/cppfront /Users/hoige/VSCodeProjects/rlcpzon2/build /Users/hoige/VSCodeProjects/rlcpzon2/build /Users/hoige/VSCodeProjects/rlcpzon2/build/CMakeFiles/cppfront_cppfront.dir/DependInfo.cmake "--color="
Dependencies file "CMakeFiles/cppfront_cppfront.dir/cppfront/source/cppfront.cpp.o.d" is newer than depends file "/Users/hoige/VSCodeProjects/rlcpzon2/build/CMakeFiles/cppfront_cppfront.dir/compiler_depend.internal".
Consolidate compiler generated dependencies of target cppfront_cppfront
/Applications/Xcode.app/Contents/Developer/usr/bin/make  -f CMakeFiles/cppfront_cppfront.dir/build.make CMakeFiles/cppfront_cppfront.dir/build
[ 50%] Building CXX object CMakeFiles/cppfront_cppfront.dir/cppfront/source/cppfront.cpp.o
/opt/homebrew/opt/llvm/bin/clang++  -I/Users/hoige/VSCodeProjects/rlcpzon2/cppfront/cppfront/source -DNDEBUG -std=gnu++20 -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -MD -MT CMakeFiles/cppfront_cppfront.dir/cppfront/source/cppfront.cpp.o -MF CMakeFiles/cppfront_cppfront.dir/cppfront/source/cppfront.cpp.o.d -o CMakeFiles/cppfront_cppfront.dir/cppfront/source/cppfront.cpp.o -c /Users/hoige/VSCodeProjects/rlcpzon2/cppfront/cppfront/source/cppfront.cpp
[100%] Linking CXX executable cppfront
/opt/homebrew/bin/cmake -E cmake_link_script CMakeFiles/cppfront_cppfront.dir/link.txt --verbose=1
/opt/homebrew/opt/llvm/bin/clang++ -O3 -DNDEBUG -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.2.sdk -Wl,-search_paths_first -Wl,-headerpad_max_install_names CMakeFiles/cppfront_cppfront.dir/cppfront/source/cppfront.cpp.o -o cppfront
[100%] Built target cppfront_cppfront
/opt/homebrew/bin/cmake -E cmake_progress_start /Users/hoige/VSCodeProjects/rlcpzon2/build/CMakeFiles 0
/Applications/Xcode.app/Contents/Developer/usr/bin/make  -f CMakeFiles/Makefile2 preinstall
make[1]: Nothing to be done for `preinstall'.
Install the project...
/opt/homebrew/bin/cmake -P cmake_install.cmake
-- Install configuration: "Release"
-- Installing: /usr/local/bin/cppfront
-- Up-to-date: /usr/local/include/cpp2util.h
-- Up-to-date: /usr/local/include/cpp2regex.h
-- Up-to-date: /usr/local/share/cmake/cppfront/cppfront-targets.cmake
-- Up-to-date: /usr/local/share/cmake/cppfront/cppfront-targets-release.cmake
-- Up-to-date: /usr/local/share/cmake/cppfront/cppfront-config.cmake
-- Up-to-date: /usr/local/share/cmake/cppfront/cppfront-config-version.cmake
-- Up-to-date: /usr/local/share/cmake/cppfront/CppfrontHelpers.cmake