René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"cffi hard to install on osx","articleBody":"I want to understand this and add it to a FAQ or something because I've been asked twice about it.\n\n```\n(venv)venv [master] $ pip install cffi\nDownloading/unpacking cffi\n  Downloading cffi-0.8.6.tar.gz (196kB): 196kB downloaded\n  Running setup.py (path:/Users/maia/code/venv/build/cffi/setup.py) egg_info for package cffi\n\nDownloading/unpacking pycparser (from cffi)\n  Downloading pycparser-2.10.tar.gz (206kB): 206kB downloaded\n  Running setup.py (path:/Users/maia/code/venv/build/pycparser/setup.py) egg_info for package pycparser\n\nInstalling collected packages: cffi, pycparser\n  Running setup.py install for cffi\n    building '_cffi_backend' extension\n    clang -fno-strict-aliasing -fno-common -dynamic -I/usr/local/include -I/usr/local/opt/sqlite/include -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -DUSE__THREAD -I/usr/include/ffi -I/usr/include/libffi -I/usr/local/Cellar/python/2.7.8_1/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c c/_cffi_backend.c -o build/temp.macosx-10.9-x86_64-2.7/c/_cffi_backend.o\n    c/_cffi_backend.c:13:10: fatal error: 'ffi.h' file not found\n    #include \u003cffi.h\u003e\n             ^\n    1 error generated.\n    error: command 'clang' failed with exit status 1\n    Complete output from command /Users/maia/code/venv/bin/python2.7 -c \"import setuptools, tokenize;__file__='/Users/maia/code/venv/build/cffi/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))\" install --record /var/folders/ck/tdb2gmy56p58xnb6p2yj2lgh0000gn/T/pip-JhJ99M-record/install-record.txt --single-version-externally-managed --compile --install-headers /Users/maia/code/venv/bin/../include/site/python2.7:\n    running install\n\nrunning build\n\nrunning build_py\n\ncreating build\n\ncreating build/lib.macosx-10.9-x86_64-2.7\n\ncreating build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/__init__.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/api.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/backend_ctypes.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/commontypes.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/cparser.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/ffiplatform.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/gc_weakref.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/lock.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/model.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/vengine_cpy.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/vengine_gen.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\ncopying cffi/verifier.py -\u003e build/lib.macosx-10.9-x86_64-2.7/cffi\n\nrunning build_ext\n\nbuilding '_cffi_backend' extension\n\ncreating build/temp.macosx-10.9-x86_64-2.7\n\ncreating build/temp.macosx-10.9-x86_64-2.7/c\n\nclang -fno-strict-aliasing -fno-common -dynamic -I/usr/local/include -I/usr/local/opt/sqlite/include -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Tk.framework/Versions/8.5/Headers -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -DUSE__THREAD -I/usr/include/ffi -I/usr/include/libffi -I/usr/local/Cellar/python/2.7.8_1/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c c/_cffi_backend.c -o build/temp.macosx-10.9-x86_64-2.7/c/_cffi_backend.o\n\nc/_cffi_backend.c:13:10: fatal error: 'ffi.h' file not found\n\n#include \u003cffi.h\u003e\n\n         ^\n\n1 error generated.\n\nerror: command 'clang' failed with exit status 1\n\n----------------------------------------\nCleaning up...\nCommand /Users/maia/code/venv/bin/python2.7 -c \"import setuptools, tokenize;__file__='/Users/maia/code/venv/build/cffi/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))\" install --record /var/folders/ck/tdb2gmy56p58xnb6p2yj2lgh0000gn/T/pip-JhJ99M-record/install-record.txt --single-version-externally-managed --compile --install-headers /Users/maia/code/venv/bin/../include/site/python2.7 failed with error code 1 in /Users/maia/code/venv/build/cffi\nStoring debug log for failure in /Users/maia/.pip/pip.log\n```\n","author":{"url":"https://github.com/thomasballinger","@type":"Person","name":"thomasballinger"},"datePublished":"2015-01-31T02:43:30.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/470/bpython/issues/470"}