Installation issue on Mac (libstdc++ vs libc++)

Bắt đầu với setup.py và đường dẫn build snappy/snappymodule.cc được hiển thị trong nhật ký cài đặt, sau đó tái hiện quá trình cài đặt bằng pip trên macOS mà không dùng workaround. Được xem là hoàn tất khi extension liên kết với libc++ và python-snappy cài đặt thành công mà không yêu cầu CFLAGS="-stdlib=libc++".

System Version: macOS 10.15.4 (19E287)
Kernel Version: Darwin 19.4.0
Xcode 11.4.1
Build version 11E503a

During pip install python-snappy, received:

Installing collected packages: python-snappy
    Running setup.py install for python-snappy ... error
    ERROR: Command errored out with exit status 1:
     command: /Applications/miniconda3/envs/serialization-benchmarking/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/13/2dfbkf595fq1f1_5tjvzq35h0000gp/T/pip-install-nsuxlclp/python-snappy/setup.py'"'"'; __file__='"'"'/private/var/folders/13/2dfbkf595fq1f1_5tjvzq35h0000gp/T/pip-install-nsuxlclp/python-snappy/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/13/2dfbkf595fq1f1_5tjvzq35h0000gp/T/pip-record-5g8l8mp0/install-record.txt --single-version-externally-managed --compile --install-headers /Applications/miniconda3/envs/serialization-benchmarking/include/python3.7m/python-snappy
         cwd: /private/var/folders/13/2dfbkf595fq1f1_5tjvzq35h0000gp/T/pip-install-nsuxlclp/python-snappy/
    Complete output (27 lines):
    /Applications/miniconda3/envs/serialization-benchmarking/lib/python3.7/distutils/dist.py:274: UserWarning: Unknown distribution option: 'cffi_modules'
      warnings.warn(msg)
    running install
    running build
    running build_py
    creating build
    creating build/lib.macosx-10.7-x86_64-3.7
    creating build/lib.macosx-10.7-x86_64-3.7/snappy
    copying snappy/snappy.py -> build/lib.macosx-10.7-x86_64-3.7/snappy
    copying snappy/snappy_cffi.py -> build/lib.macosx-10.7-x86_64-3.7/snappy
    copying snappy/__init__.py -> build/lib.macosx-10.7-x86_64-3.7/snappy
    copying snappy/hadoop_snappy.py -> build/lib.macosx-10.7-x86_64-3.7/snappy
    copying snappy/snappy_formats.py -> build/lib.macosx-10.7-x86_64-3.7/snappy
    copying snappy/__main__.py -> build/lib.macosx-10.7-x86_64-3.7/snappy
    copying snappy/snappy_cffi_builder.py -> build/lib.macosx-10.7-x86_64-3.7/snappy
    running build_ext
    building 'snappy._snappy' extension
    creating build/temp.macosx-10.7-x86_64-3.7
    creating build/temp.macosx-10.7-x86_64-3.7/snappy
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Applications/miniconda3/envs/serialization-benchmarking/include -arch x86_64 -I/Applications/miniconda3/envs/serialization-benchmarking/include -arch x86_64 -I/Applications/miniconda3/envs/serialization-benchmarking/include/python3.7m -c snappy/snappymodule.cc -o build/temp.macosx-10.7-x86_64-3.7/snappy/snappymodule.o
    clang: warning: include path for libstdc++ headers not found; pass '-stdlib=libc++' on the command line to use the libc++ standard library instead [-Wstdlibcxx-not-found]
    gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/Applications/miniconda3/envs/serialization-benchmarking/include -arch x86_64 -I/Applications/miniconda3/envs/serialization-benchmarking/include -arch x86_64 -I/Applications/miniconda3/envs/serialization-benchmarking/include/python3.7m -c snappy/crc32c.c -o build/temp.macosx-10.7-x86_64-3.7/snappy/crc32c.o
    g++ -bundle -undefined dynamic_lookup -L/Applications/miniconda3/envs/serialization-benchmarking/lib -arch x86_64 -L/Applications/miniconda3/envs/serialization-benchmarking/lib -arch x86_64 -arch x86_64 build/temp.macosx-10.7-x86_64-3.7/snappy/snappymodule.o build/temp.macosx-10.7-x86_64-3.7/snappy/crc32c.o -lsnappy -o build/lib.macosx-10.7-x86_64-3.7/snappy/_snappy.cpython-37m-darwin.so
    clang: warning: libstdc++ is deprecated; move to libc++ with a minimum deployment target of OS X 10.9 [-Wdeprecated]
    ld: library not found for -lstdc++
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    error: command 'g++' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /Applications/miniconda3/envs/serialization-benchmarking/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/13/2dfbkf595fq1f1_5tjvzq35h0000gp/T/pip-install-nsuxlclp/python-snappy/setup.py'"'"'; __file__='"'"'/private/var/folders/13/2dfbkf595fq1f1_5tjvzq35h0000gp/T/pip-install-nsuxlclp/python-snappy/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /private/var/folders/13/2dfbkf595fq1f1_5tjvzq35h0000gp/T/pip-record-5g8l8mp0/install-record.txt --single-version-externally-managed --compile --install-headers /Applications/miniconda3/envs/serialization-benchmarking/include/python3.7m/python-snappy Check the logs for full command output.

Fixed using: CFLAGS="-stdlib=libc++" pip install python-snappy