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Python CFLAGS are causing collisions when building native Python modules #68352

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Python CFLAGS are causing collisions when building native Python modules#68352
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@mitchhentges

Description

@mitchhentges
mitchhentges
opened on Jan 5, 2021

Bug report

  • ran brew update and can still reproduce the problem?
  • ran brew doctor, fixed all issues and can still reproduce the problem?
  • ran brew gist-logs <formula> (where <formula> is the name of the formula that failed) and included the output link?
  • if brew gist-logs didn't work: ran brew config and brew doctor and included their output with your issue?

What you were trying to do (and why)

I want to install an older version of the Python zstandard package on a machine that doesn't have a zstandard wheel available, and that may have the zstd brew package already installed.

What happened (include command output)

The compile fails, because it'll use some files from brew's zstd package (located in /usr/local/include) and some files from the pip package. See the (prettified) clang invocation:

clang \
 # --- CFLAGS ---
 -I/usr/local/include \
 # <snip>
 # --- cc_args (built from Extension(include_dirs, macros)) ---
 -Izstd/common \
 -Ic-ext \
 -Izstd \
 -Izstd/compress \
 -Izstd/dictBuilder \
 -Izstd/decompress \
 # <snip>
 # --- extra_postargs (built from Extension(extra_compile_args)) ---
 # <snip>

Note that moving the -l/usr/local/include line to after the cc_args section allowed the build to complete successfully.

Command output 
```
Collecting zstandard==0.14.0
  Using cached zstandard-0.14.0.tar.gz (676 kB)
Requirement already satisfied: cffi>=1.11 in /Users/mhentges/Library/Python/3.9/lib/python/site-packages (from zstandard==0.14.0) (1.14.4)
Requirement already satisfied: pycparser in /Users/mhentges/Library/Python/3.9/lib/python/site-packages (from cffi>=1.11->zstandard==0.14.0) (2.20)
Building wheels for collected packages: zstandard
  Building wheel for zstandard (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/local/opt/python@3.9/bin/python3.9 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/setup.py'"'"'; __file__='"'"'/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-wheel-gqidls7o
       cwd: /private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/
  Complete output (101 lines):
  generating build/_zstd_cffi.c
  (already up-to-date)
  not modified: 'build/_zstd_cffi.c'
  running bdist_wheel
  running build
  running build_py
  creating build/lib.macosx-11-x86_64-3.9
  creating build/lib.macosx-11-x86_64-3.9/zstandard
  copying zstandard/cffi.py -> build/lib.macosx-11-x86_64-3.9/zstandard
  copying zstandard/__init__.py -> build/lib.macosx-11-x86_64-3.9/zstandard
  running build_ext
  building 'zstd' extension
  creating build/temp.macosx-11-x86_64-3.9
  creating build/temp.macosx-11-x86_64-3.9/c-ext
  creating build/temp.macosx-11-x86_64-3.9/zstd
  creating build/temp.macosx-11-x86_64-3.9/zstd/common
  creating build/temp.macosx-11-x86_64-3.9/zstd/compress
  creating build/temp.macosx-11-x86_64-3.9/zstd/decompress
  creating build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/bufferutil.c -o build/temp.macosx-11-x86_64-3.9/c-ext/bufferutil.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressionchunker.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressionchunker.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressiondict.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressiondict.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressionparams.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressionparams.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressionreader.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressionreader.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressionwriter.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressionwriter.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressobj.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressobj.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressor.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressor.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressoriterator.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressoriterator.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/constants.c -o build/temp.macosx-11-x86_64-3.9/c-ext/constants.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressionreader.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressionreader.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressionwriter.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressionwriter.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressobj.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressobj.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressor.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressor.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressoriterator.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressoriterator.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/frameparams.c -o build/temp.macosx-11-x86_64-3.9/c-ext/frameparams.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd.c -o build/temp.macosx-11-x86_64-3.9/zstd.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  zstd.c:218:2: warning: code will never be executed [-Wunreachable-code]
          bufferutil_module_init(m);
          ^~~~~~~~~~~~~~~~~~~~~~
  zstd.c:213:29: note: silence by adding parentheses to mark code as explicitly dead
          if (ZSTD_VERSION_NUMBER != 10405 || ZSTD_versionNumber() != 10405) {
                                     ^
                                     /* DISABLES CODE */ ( )
  1 warning generated.
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/debug.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/debug.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/entropy_common.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/entropy_common.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/error_private.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/error_private.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/fse_decompress.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/fse_decompress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/pool.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/pool.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/threading.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/threading.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/xxhash.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/xxhash.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/zstd_common.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/zstd_common.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/fse_compress.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/fse_compress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/hist.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/hist.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/huf_compress.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/huf_compress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_compress.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_compress_literals.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_literals.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_compress_sequences.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_sequences.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_compress_superblock.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_superblock.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_double_fast.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_double_fast.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_fast.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_fast.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_lazy.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_lazy.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_ldm.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_ldm.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_opt.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_opt.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstdmt_compress.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstdmt_compress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/decompress/huf_decompress.c -o build/temp.macosx-11-x86_64-3.9/zstd/decompress/huf_decompress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/decompress/zstd_ddict.c -o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_ddict.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/decompress/zstd_decompress.c -o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_decompress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/decompress/zstd_decompress_block.c -o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_decompress_block.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/dictBuilder/cover.c -o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/cover.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/dictBuilder/divsufsort.c -o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/divsufsort.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/dictBuilder/fastcover.c -o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/fastcover.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Izstd/compress -Izstd -Izstd/decompress -Ic-ext -Izstd/dictBuilder -Izstd/common -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/dictBuilder/zdict.c -o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/zdict.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
  clang -bundle -undefined dynamic_lookup -L/usr/local/lib -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk build/temp.macosx-11-x86_64-3.9/c-ext/bufferutil.o build/temp.macosx-11-x86_64-3.9/c-ext/compressionchunker.o build/temp.macosx-11-x86_64-3.9/c-ext/compressiondict.o build/temp.macosx-11-x86_64-3.9/c-ext/compressionparams.o build/temp.macosx-11-x86_64-3.9/c-ext/compressionreader.o build/temp.macosx-11-x86_64-3.9/c-ext/compressionwriter.o build/temp.macosx-11-x86_64-3.9/c-ext/compressobj.o build/temp.macosx-11-x86_64-3.9/c-ext/compressor.o build/temp.macosx-11-x86_64-3.9/c-ext/compressoriterator.o build/temp.macosx-11-x86_64-3.9/c-ext/constants.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressionreader.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressionwriter.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressobj.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressor.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressoriterator.o build/temp.macosx-11-x86_64-3.9/c-ext/frameparams.o build/temp.macosx-11-x86_64-3.9/zstd.o build/temp.macosx-11-x86_64-3.9/zstd/common/debug.o build/temp.macosx-11-x86_64-3.9/zstd/common/entropy_common.o build/temp.macosx-11-x86_64-3.9/zstd/common/error_private.o build/temp.macosx-11-x86_64-3.9/zstd/common/fse_decompress.o build/temp.macosx-11-x86_64-3.9/zstd/common/pool.o build/temp.macosx-11-x86_64-3.9/zstd/common/threading.o build/temp.macosx-11-x86_64-3.9/zstd/common/xxhash.o build/temp.macosx-11-x86_64-3.9/zstd/common/zstd_common.o build/temp.macosx-11-x86_64-3.9/zstd/compress/fse_compress.o build/temp.macosx-11-x86_64-3.9/zstd/compress/hist.o build/temp.macosx-11-x86_64-3.9/zstd/compress/huf_compress.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_literals.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_sequences.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_superblock.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_double_fast.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_fast.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_lazy.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_ldm.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_opt.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstdmt_compress.o build/temp.macosx-11-x86_64-3.9/zstd/decompress/huf_decompress.o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_ddict.o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_decompress.o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_decompress_block.o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/cover.o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/divsufsort.o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/fastcover.o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/zdict.o -L/usr/local/lib -L/usr/local/opt/openssl@1.1/lib -L/usr/local/opt/sqlite/lib -o build/lib.macosx-11-x86_64-3.9/zstd.cpython-39-darwin.so
  building '_zstd_cffi' extension
  creating build/temp.macosx-11-x86_64-3.9/build
  clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd/common -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd/compress -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd/decompress -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd/dictBuilder -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c build/_zstd_cffi.c -o build/temp.macosx-11-x86_64-3.9/build/_zstd_cffi.o -DZSTD_MULTITHREAD
  build/_zstd_cffi.c:1237:14: error: no member named 'matchPos' in 'ZSTD_Sequence'
    (void)((p->matchPos) | 0);  /* check that 'ZSTD_Sequence.matchPos' is an integer */
            ~  ^
  build/_zstd_cffi.c:8812:10: error: implicit declaration of function 'ZSTD_getSequences' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    return ZSTD_getSequences(x0, x1, x2, x3, x4);
           ^
  build/_zstd_cffi.c:8812:10: note: did you mean 'ZSTD_generateSequences'?
  /usr/local/include/zstd.h:1326:20: note: 'ZSTD_generateSequences' declared here
  ZSTDLIB_API size_t ZSTD_generateSequences(ZSTD_CCtx* zc, ZSTD_Sequence* outSeqs,
                     ^
  build/_zstd_cffi.c:8873:14: error: implicit declaration of function 'ZSTD_getSequences' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
    { result = ZSTD_getSequences(x0, x1, x2, x3, x4); }
               ^
  build/_zstd_cffi.c:11220:17: error: no member named 'matchPos' in ''
    { "matchPos", offsetof(ZSTD_Sequence, matchPos),
                  ^                       ~~~~~~~~
  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/12.0.0/include/stddef.h:104:24: note: expanded from macro 'offsetof'
  #define offsetof(t, d) __builtin_offsetof(t, d)
                         ^                     ~
  build/_zstd_cffi.c:11221:46: error: no member named 'matchPos' in 'ZSTD_Sequence'
                  sizeof(((ZSTD_Sequence *)0)->matchPos),
                         ~~~~~~~~~~~~~~~~~~~~  ^
  5 errors generated.
  error: command '/usr/bin/clang' failed with exit code 1
  ----------------------------------------
  ERROR: Failed building wheel for zstandard
  Running setup.py clean for zstandard
Failed to build zstandard
Installing collected packages: zstandard
    Running setup.py install for zstandard ... error
    ERROR: Command errored out with exit status 1:
     command: /usr/local/opt/python@3.9/bin/python3.9 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/setup.py'"'"'; __file__='"'"'/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/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/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-record-_0e218im/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /Users/mhentges/Library/Python/3.9/include/python3.9/zstandard
         cwd: /private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/
    Complete output (101 lines):
    generating build/_zstd_cffi.c
    (already up-to-date)
    not modified: 'build/_zstd_cffi.c'
    running install
    running build
    running build_py
    creating build/lib.macosx-11-x86_64-3.9
    creating build/lib.macosx-11-x86_64-3.9/zstandard
    copying zstandard/cffi.py -> build/lib.macosx-11-x86_64-3.9/zstandard
    copying zstandard/__init__.py -> build/lib.macosx-11-x86_64-3.9/zstandard
    running build_ext
    building 'zstd' extension
    creating build/temp.macosx-11-x86_64-3.9
    creating build/temp.macosx-11-x86_64-3.9/c-ext
    creating build/temp.macosx-11-x86_64-3.9/zstd
    creating build/temp.macosx-11-x86_64-3.9/zstd/common
    creating build/temp.macosx-11-x86_64-3.9/zstd/compress
    creating build/temp.macosx-11-x86_64-3.9/zstd/decompress
    creating build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/bufferutil.c -o build/temp.macosx-11-x86_64-3.9/c-ext/bufferutil.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressionchunker.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressionchunker.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressiondict.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressiondict.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressionparams.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressionparams.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressionreader.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressionreader.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressionwriter.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressionwriter.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressobj.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressobj.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressor.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressor.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/compressoriterator.c -o build/temp.macosx-11-x86_64-3.9/c-ext/compressoriterator.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/constants.c -o build/temp.macosx-11-x86_64-3.9/c-ext/constants.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressionreader.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressionreader.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressionwriter.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressionwriter.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressobj.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressobj.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressor.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressor.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/decompressoriterator.c -o build/temp.macosx-11-x86_64-3.9/c-ext/decompressoriterator.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c c-ext/frameparams.c -o build/temp.macosx-11-x86_64-3.9/c-ext/frameparams.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd.c -o build/temp.macosx-11-x86_64-3.9/zstd.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    zstd.c:218:2: warning: code will never be executed [-Wunreachable-code]
            bufferutil_module_init(m);
            ^~~~~~~~~~~~~~~~~~~~~~
    zstd.c:213:29: note: silence by adding parentheses to mark code as explicitly dead
            if (ZSTD_VERSION_NUMBER != 10405 || ZSTD_versionNumber() != 10405) {
                                       ^
                                       /* DISABLES CODE */ ( )
    1 warning generated.
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/debug.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/debug.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/entropy_common.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/entropy_common.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/error_private.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/error_private.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/fse_decompress.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/fse_decompress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/pool.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/pool.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/threading.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/threading.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/xxhash.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/xxhash.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/common/zstd_common.c -o build/temp.macosx-11-x86_64-3.9/zstd/common/zstd_common.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/fse_compress.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/fse_compress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/hist.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/hist.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/huf_compress.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/huf_compress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_compress.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_compress_literals.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_literals.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_compress_sequences.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_sequences.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_compress_superblock.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_superblock.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_double_fast.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_double_fast.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_fast.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_fast.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_lazy.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_lazy.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_ldm.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_ldm.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstd_opt.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_opt.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/compress/zstdmt_compress.c -o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstdmt_compress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/decompress/huf_decompress.c -o build/temp.macosx-11-x86_64-3.9/zstd/decompress/huf_decompress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/decompress/zstd_ddict.c -o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_ddict.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/decompress/zstd_decompress.c -o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_decompress.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/decompress/zstd_decompress_block.c -o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_decompress_block.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/dictBuilder/cover.c -o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/cover.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/dictBuilder/divsufsort.c -o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/divsufsort.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/dictBuilder/fastcover.c -o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/fastcover.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -Ic-ext -Izstd/compress -Izstd/dictBuilder -Izstd -Izstd/common -Izstd/decompress -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c zstd/dictBuilder/zdict.c -o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/zdict.o -DZSTD_MULTITHREAD -DZSTDLIB_VISIBILITY= -DZDICTLIB_VISIBILITY= -DZSTDERRORLIB_VISIBILITY= -fvisibility=hidden
    clang -bundle -undefined dynamic_lookup -L/usr/local/lib -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk build/temp.macosx-11-x86_64-3.9/c-ext/bufferutil.o build/temp.macosx-11-x86_64-3.9/c-ext/compressionchunker.o build/temp.macosx-11-x86_64-3.9/c-ext/compressiondict.o build/temp.macosx-11-x86_64-3.9/c-ext/compressionparams.o build/temp.macosx-11-x86_64-3.9/c-ext/compressionreader.o build/temp.macosx-11-x86_64-3.9/c-ext/compressionwriter.o build/temp.macosx-11-x86_64-3.9/c-ext/compressobj.o build/temp.macosx-11-x86_64-3.9/c-ext/compressor.o build/temp.macosx-11-x86_64-3.9/c-ext/compressoriterator.o build/temp.macosx-11-x86_64-3.9/c-ext/constants.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressionreader.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressionwriter.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressobj.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressor.o build/temp.macosx-11-x86_64-3.9/c-ext/decompressoriterator.o build/temp.macosx-11-x86_64-3.9/c-ext/frameparams.o build/temp.macosx-11-x86_64-3.9/zstd.o build/temp.macosx-11-x86_64-3.9/zstd/common/debug.o build/temp.macosx-11-x86_64-3.9/zstd/common/entropy_common.o build/temp.macosx-11-x86_64-3.9/zstd/common/error_private.o build/temp.macosx-11-x86_64-3.9/zstd/common/fse_decompress.o build/temp.macosx-11-x86_64-3.9/zstd/common/pool.o build/temp.macosx-11-x86_64-3.9/zstd/common/threading.o build/temp.macosx-11-x86_64-3.9/zstd/common/xxhash.o build/temp.macosx-11-x86_64-3.9/zstd/common/zstd_common.o build/temp.macosx-11-x86_64-3.9/zstd/compress/fse_compress.o build/temp.macosx-11-x86_64-3.9/zstd/compress/hist.o build/temp.macosx-11-x86_64-3.9/zstd/compress/huf_compress.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_literals.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_sequences.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_compress_superblock.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_double_fast.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_fast.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_lazy.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_ldm.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstd_opt.o build/temp.macosx-11-x86_64-3.9/zstd/compress/zstdmt_compress.o build/temp.macosx-11-x86_64-3.9/zstd/decompress/huf_decompress.o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_ddict.o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_decompress.o build/temp.macosx-11-x86_64-3.9/zstd/decompress/zstd_decompress_block.o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/cover.o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/divsufsort.o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/fastcover.o build/temp.macosx-11-x86_64-3.9/zstd/dictBuilder/zdict.o -L/usr/local/lib -L/usr/local/opt/openssl@1.1/lib -L/usr/local/opt/sqlite/lib -o build/lib.macosx-11-x86_64-3.9/zstd.cpython-39-darwin.so
    building '_zstd_cffi' extension
    creating build/temp.macosx-11-x86_64-3.9/build
    clang -Wno-unused-result -Wsign-compare -Wunreachable-code -fno-common -dynamic -DNDEBUG -g -fwrapv -O3 -Wall -I/usr/local/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd/common -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd/compress -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd/decompress -I/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/zstd/dictBuilder -I/usr/local/include -I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/sqlite/include -I/usr/local/Cellar/python@3.9/3.9.1_4/Frameworks/Python.framework/Versions/3.9/include/python3.9 -c build/_zstd_cffi.c -o build/temp.macosx-11-x86_64-3.9/build/_zstd_cffi.o -DZSTD_MULTITHREAD
    build/_zstd_cffi.c:1237:14: error: no member named 'matchPos' in 'ZSTD_Sequence'
      (void)((p->matchPos) | 0);  /* check that 'ZSTD_Sequence.matchPos' is an integer */
              ~  ^
    build/_zstd_cffi.c:8812:10: error: implicit declaration of function 'ZSTD_getSequences' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
      return ZSTD_getSequences(x0, x1, x2, x3, x4);
             ^
    build/_zstd_cffi.c:8812:10: note: did you mean 'ZSTD_generateSequences'?
    /usr/local/include/zstd.h:1326:20: note: 'ZSTD_generateSequences' declared here
    ZSTDLIB_API size_t ZSTD_generateSequences(ZSTD_CCtx* zc, ZSTD_Sequence* outSeqs,
                       ^
    build/_zstd_cffi.c:8873:14: error: implicit declaration of function 'ZSTD_getSequences' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
      { result = ZSTD_getSequences(x0, x1, x2, x3, x4); }
                 ^
    build/_zstd_cffi.c:11220:17: error: no member named 'matchPos' in ''
      { "matchPos", offsetof(ZSTD_Sequence, matchPos),
                    ^                       ~~~~~~~~
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/12.0.0/include/stddef.h:104:24: note: expanded from macro 'offsetof'
    #define offsetof(t, d) __builtin_offsetof(t, d)
                           ^                     ~
    build/_zstd_cffi.c:11221:46: error: no member named 'matchPos' in 'ZSTD_Sequence'
                    sizeof(((ZSTD_Sequence *)0)->matchPos),
                           ~~~~~~~~~~~~~~~~~~~~  ^
    5 errors generated.
    error: command '/usr/bin/clang' failed with exit code 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/local/opt/python@3.9/bin/python3.9 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/setup.py'"'"'; __file__='"'"'/private/var/folders/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-install-tqzhobq_/zstandard_b17f990ea1fd4b59ac8ab91055204218/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/bl/f1zf29l94f570sc6ljd4j3rh0000gn/T/pip-record-_0e218im/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /Users/mhentges/Library/Python/3.9/include/python3.9/zstandard Check the logs for full command output.
```

What you expected to happen

I wanted zstandard to be compiled, then have it packaged and installed with the wrapping Python code.

Step-by-step reproduction instructions (by running brew install commands)

  1. brew install python, restart shell
  2. brew install zstd
  3. Use pip to install cffi so zstandard reproduces the specific failure I'm reporting: pip install --user cffi
  4. Use pip to install and build a version of zstandard that is incompatible with zstd in brew, e.g.: pip3 install 'zstandard==0.14.0' --no-binary :all: --user

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