8

我正在尝试让 Python 与 swig 一起运行以执行 C/C++。我在这里运行教程,“构建 python 模块”。当我打电话时

gcc -c example.c example_wrap.c -I /my_correct_path/python2.5

我收到一个错误:

my_correct_path/python2.5/pyport.h:761:2: error: #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
example_wrap.c: In function 'SWIG_Python_ConvertFunctionPtr':
example_wrap.c:2034: warning: initialization discards qualifiers from pointer target type
example_wrap.c: In function 'SWIG_Python_FixMethods':
example_wrap.c:3232: warning: initialization discards qualifiers from pointer target type

它实际上确实创建了一个 example.o 文件,但它不起作用。我使用的是 python2.5 而不是示例中的 2.1,这是一个问题吗?错误(其他一切都只是一个“警告”)说明了错误的平台。这是一台 64 位机器;这是一个问题吗?我的 gcc 是否为我的机器配置错误?我该如何度过这个难关?

更新:我仍然有问题。我如何实际实施这个“修复”?

4

3 回答 3

7

在 64 位 centos 上为 32 位 python 安装 python readline 时,我发现这个线程正在寻找相同“LONGBIT”错误的答案。该链接没有直接答案,因此我不得不进一步搜索答案(对于经验丰富的 linux 用户/开发人员来说,这可能是直截了当的)。为了将来参考,解决方案是通过在 CFLAGS 环境变量中使用“-m32”来强制 32 位。

bash-3.2$ easy_install readline
Searching for readline
Reading http://pypi.python.org/simple/readline/
Reading http://www.python.org/
Best match: readline 2.6.4
Downloading http://pypi.python.org/packages/source/r/readline/readline-2.6.4.tar.gz#md5=7568e8b78f383443ba57c9afec6f4285
Processing readline-2.6.4.tar.gz
Running readline-2.6.4/setup.py -q bdist_egg --dist-dir /tmp/easy_install-mqr9wH/readline-2.6.4/egg-dist-tmp-p3apfF
In file included from /usr/local/python2.6/include/python2.6/Python.h:58,
                 from Modules/readline.c:8:
/usr/local/python2.6/include/python2.6/pyport.h:685:2: error: #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
error: Setup script exited with error: command 'gcc' failed with exit status 1

然后我尝试使用 CFLAGS=-m32:

bash-3.2$ CFLAGS=-m32 easy_install readline
Searching for readline
Reading http://pypi.python.org/simple/readline/
Reading http://www.python.org/
Best match: readline 2.6.4
Downloading http://pypi.python.org/packages/source/r/readline/readline-2.6.4.tar.gz#md5=7568e8b78f383443ba57c9afec6f4285
Processing readline-2.6.4.tar.gz
Running readline-2.6.4/setup.py -q bdist_egg --dist-dir /tmp/easy_install-uauVci/readline-2.6.4/egg-dist-tmp-YY0tQa
In file included from /usr/include/features.h:352,
                 from /usr/include/limits.h:27,
                 from /usr/lib/gcc/x86_64-redhat-linux/4.1.2/include/limits.h:122,
                 from /usr/lib/gcc/x86_64-redhat-linux/4.1.2/include/syslimits.h:7,
                 from /usr/lib/gcc/x86_64-redhat-linux/4.1.2/include/limits.h:11,
                 from /usr/local/python2.6/include/python2.6/Python.h:19,
                 from Modules/readline.c:8:
/usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: No such file or directory
error: Setup script exited with error: command 'gcc' failed with exit status 1

最新的错误是由于没有 32 位的 glibc-devel 包(感谢这个线程)。我还必须安装 ncurses-devel.i386 ,然后 easy_install 完成并且 ipython 识别了它。我的生活感觉被毁了,直到我为了 ipython 而工作。

bash-3.2$ CFLAGS=-m32 easy_install readline
Searching for readline
Reading http://pypi.python.org/simple/readline/
Reading http://www.python.org/
Best match: readline 2.6.4
Downloading http://pypi.python.org/packages/source/r/readline/readline-2.6.4.tar.gz#md5=7568e8b78f383443ba57c9afec6f4285
Processing readline-2.6.4.tar.gz
Running readline-2.6.4/setup.py -q bdist_egg --dist-dir /tmp/easy_install-dHly4D/readline-2.6.4/egg-dist-tmp-oIEDYl
Adding readline 2.6.4 to easy-install.pth file

Installed /home/hari/bin/python/lib/python2.6/site-packages/readline-2.6.4-py2.6-linux-x86_64.egg
Processing dependencies for readline
Finished processing dependencies for readline
于 2010-05-25T22:36:08.050 回答
2

我在尝试安装 Python 包时遇到了同样的错误,但已修复它。
“LONG_BIT”错误是:

$ easy_install astropy  
/my_path/epd/epd-7.3-2-rh5-x86/include/python2.7/pyport.h:849:2: 
error: #error "LONG_BIT definition appears wrong for platform 
(bad gcc/glibc config?)." error: Setup script exited with error: 
command 'gcc' failed with exit status 1

正如你所建议的,Alex,我必须安装正确版本的 Python epd 以匹配我的机器和我想要安装的包的要求。有并行版本的 Python 正在运行,我认为这就是混乱和错误的来源。转到Enthought 的存储库(单击“登录到存储库”-> 安装程序)并安装正确的版本。

确保通过删除旧的 Python 版本来清理(或询问知道他们在做什么的人为您做这件事)。然后当然更改您的 .cshrc 路径以指向新版本并正确获取文件。我这样做后没有任何问题。

我意识到这个问题是 4 年前提出的!

于 2013-07-30T22:09:36.083 回答
2

实际上,我发现这个线程两次,相隔几年,都是在尝试libxml2从源代码安装时。该库的configure脚本实际上有一个--without-python选项,我使用它而不是尝试修复错误。

于 2013-10-29T20:25:24.287 回答