安装 libmemcached 时 gcc 失败，退出状态为 1

Question

尝试遵循 http://code.google.com/p/ 上的 python-libmemcached 说明时python-libmemcached/ 我在第 3 步遇到了麻烦（“python setup.py install”），

    (gigmash_venv)m:python-libmemcached matthewparrilla$ python setup.py build
    running build
    running build_py
    creating build
    creating build/lib.macosx-10.3-fat-2.7
    copying cmemcached.py -> build/lib.macosx-10.3-fat-2.7
    running build_ext
    building 'cmemcached_imp' extension
    creating build/temp.macosx-10.3-fat-2.7
    gcc-4.0 -fno-strict-aliasing -fno-common -dynamic -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc -arch i386 -g -O2 -DNDEBUG -g -O3 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c cmemcached_imp.c -o build/temp.macosx-10.3-fat-2.7/cmemcached_imp.o
    powerpc-apple-darwin9-gcc-4.0.1: cmemcached_imp.c: No such file or directory
    powerpc-apple-darwin9-gcc-4.0.1: no input files
    i686-apple-darwin9-gcc-4.0.1: cmemcached_imp.c: No such file or directory
    i686-apple-darwin9-gcc-4.0.1: no input files
    lipo: can't figure out the architecture type of: /var/folders/0o/0oHT3RmJF80rpIJtdbegzE+++TI/-Tmp-//cc9xQqQ6.out
    error: command 'gcc-4.0' failed with exit status 1

我几乎不知道这意味着什么或该怎么做。我的电脑上确实有多个版本的 gcc（4.0 和 4.2），并且通过谷歌搜索收集到了足够的信息，这可能很重要。否则就完全输了。

提前致谢。

[编辑：在遵循@phihag的指示之后]

我现在收到一个完全不同但仍然令人困惑的错误：

    (gigmash_venv)m:python-libmemcached matthewparrilla$ python setup.py build
    running build
    running build_py
    running build_ext
    building 'cmemcached_imp' extension
    gcc-4.0 -fno-strict-aliasing -fno-common -dynamic -isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc -arch i386 -g -O2 -DNDEBUG -g -O3 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c cmemcached_imp.c -o build/temp.macosx-10.3-fat-2.7/cmemcached_imp.o
    cmemcached_imp.c:237:36:cmemcached_imp.c:237:36: error:  error: libmemcached/memcached.h: No such file or directory
    libmemcached/memcached.h: No such file or directory
    In file included from cmemcached_imp.c:238:
    split_mc.h:14: warning: ‘struct memcached_st’ declared inside parameter list
    split_mc.h:14: warning: its scope is only this definition or declaration, which is probably not what you want
    split_mc.h:17: warning: ‘struct memcached_st’ declared inside parameter list
    In file included from cmemcached_imp.c:238:
    split_mc.h:14: warning: ‘struct memcached_st’ declared inside parameter list
    (and this goes on for many many more lines)...

Answer 1

发生错误的原因是文件 cmemcached_imp.c 不存在，但必须在此步骤中进行编译。

首先，编辑文件 cmemcached_imp.pyx 并修复第 506 行中的拼写错误。而不是

sys.stderr.write("[cmemcached]%s only support string: %s" % (cmd, key))

，它应该显示

sys.stderr.write("[cmemcached]%s only support string: %s" % (cmd, keys))

然后，安装 cython 并执行

$ cython cmemcached_imp.pyx

cython 应该静默生成文件 cmemcached_imp.c。

虽然这将修复立即错误，但您可能还需要将

ext_modules=[Extension('cmemcached_imp',
            ['cmemcached_imp.pyx', 'split_mc.c'],

setup.py 替换为

ext_modules=[Extension('cmemcached_imp',
            ['cmemcached_imp.c', 'split_mc.c'],

In response to the edit:

If you follow the instructions verbatim, you'll 另外需要在本地安装 libmemcached目录。 在 python-libmemcached 中执行

$ ln -s $(pwd)/../libmemcached-0.40/libmemcached

来实现这一点。