[Solved] Fix "ld: library not found for -lc++" errors in macOS

Linker Error:

Run Build Command(s):/usr/local/Cellar/cmake/3.26.3/bin/cmake -E env VERBOSE=1 /usr/local/bin/gmake -f Makefile cmTC_2eb92/fast && /usr/local/bin/gmake  -f CMakeFiles/cmTC_2eb92.dir/build.make CMakeFiles/cmTC_2eb92.dir/build

    gmake[1]: Entering directory '/Users/devharsh/Downloads/SEAL-Python/SEAL/build/CMakeFiles/CMakeScratch/TryCompile-p29bdr'

    Building CXX object CMakeFiles/cmTC_2eb92.dir/testCXXCompiler.cxx.o

    /Library/Developer/CommandLineTools/usr/bin/c++    -MD -MT CMakeFiles/cmTC_2eb92.dir/testCXXCompiler.cxx.o -MF CMakeFiles/cmTC_2eb92.dir/testCXXCompiler.cxx.o.d -o CMakeFiles/cmTC_2eb92.dir/testCXXCompiler.cxx.o -c /Users/devharsh/Downloads/SEAL-Python/SEAL/build/CMakeFiles/CMakeScratch/TryCompile-p29bdr/testCXXCompiler.cxx

    Linking CXX executable cmTC_2eb92

    /usr/local/Cellar/cmake/3.26.3/bin/cmake -E cmake_link_script CMakeFiles/cmTC_2eb92.dir/link.txt --verbose=1

    /Library/Developer/CommandLineTools/usr/bin/c++ -Wl,-search_paths_first -Wl,-headerpad_max_install_names CMakeFiles/cmTC_2eb92.dir/testCXXCompiler.cxx.o -o cmTC_2eb92 

    ld: library not found for -lc++

    clang: error: linker command failed with exit code 1 (use -v to see invocation)

    gmake[1]: *** [CMakeFiles/cmTC_2eb92.dir/build.make:100: cmTC_2eb92] Error 1

    gmake[1]: Leaving directory '/Users/devharsh/Downloads/SEAL-Python/SEAL/build/CMakeFiles/CMakeScratch/TryCompile-p29bdr'

    gmake: *** [Makefile:127: cmTC_2eb92/fast] Error 2

Solution:

export CPLUS_INCLUDE_PATH=/usr/local/opt/llvm/include/c++/v1:/Library/Developer/CommandLineTools/SDKs/MacOSX13.3.sdk/usr/include

export LIBRARY_PATH=$LIBRARY_PATH:/Library/Developer/CommandLineTools/SDKs/MacOSX13.3.sdk/usr/lib