Build issues on macOS 14.5: ` error: call to 'gettimeofday' is ambiguous`

[corneliusroemer]

Build issues on macOS 14.5: ` error: call to 'gettimeofday' is ambiguous`

[corneliusroemer]

Later, I got some libomp errors:

/Users/corneliusromer/code/iqtree2/simulator/alisimulator.cpp:1755:71: error: use of undeclared identifier 'omp_get_num_threads'
 1755 |             if ((*it)->node->sequence->num_threads_done_simulation == omp_get_num_threads())
      |                                                                       ^
1 error generated.
gmake[2]: *** [simulator/CMakeFiles/simulator.dir/build.make:76: simulator/CMakeFiles/simulator.dir/alisimulator.cpp.o] Error 1
gmake[2]: *** Waiting for unfinished jobs....
gmake[1]: *** [CMakeFiles/Makefile2:997: simulator/CMakeFiles/simulator.dir/all] Error 2
gmake: *** [Makefile:156: all] Error 2

I fixed them by using this build script with the help of chatgpt:

export CPPFLAGS="-I/opt/homebrew/opt/libomp/include"
export LDFLAGS="-L/opt/homebrew/opt/libomp/lib"
export CMAKE_CXX_FLAGS="-Xpreprocessor -fopenmp -I/opt/homebrew/opt/libomp/include -L/opt/homebrew/opt/libomp/lib -lomp"
export CMAKE_C_FLAGS="-Xpreprocessor -fopenmp -I/opt/homebrew/opt/libomp/include -L/opt/homebrew/opt/libomp/lib -lomp"

cmake .. -DCMAKE_CXX_FLAGS="$CMAKE_CXX_FLAGS" -DCMAKE_C_FLAGS="$CMAKE_C_FLAGS" -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++
make -j