numpy - 无法在特定计算机上 `pip install numpy`

Question

在我自己的Mac OSX机器上以及运行Arch Linux的另一台机器上，使用python virtualenv中的pip install numpy可以正常工作。

不幸的是，同一命令在运行Gentoo的同事的计算机上无法运行。

这是显示错误日志的pip.log:-

building data_files sources

build_src: building npy-pkg config files

running build_py

copying numpy/version.py -> build/lib.linux-x86_64-2.7/numpy

copying build/src.linux-x86_64-2.7/numpy/__config__.py -> build/lib.linux-x86_64-2.7/numpy

copying build/src.linux-x86_64-2.7/numpy/distutils/__config__.py -> build/lib.linux-x86_64-2.7/numpy/distutils

running build_clib

customize UnixCCompiler

customize UnixCCompiler using build_clib

running build_ext

customize UnixCCompiler

customize UnixCCompiler using build_ext

customize GnuFCompiler

customize IntelFCompiler

customize LaheyFCompiler

customize PGroupFCompiler

customize AbsoftFCompiler

customize NAGFCompiler

customize VastFCompiler

customize CompaqFCompiler

customize IntelItaniumFCompiler

customize IntelEM64TFCompiler

customize Gnu95FCompiler

customize Gnu95FCompiler

customize Gnu95FCompiler using build_ext

building 'numpy.linalg.lapack_lite' extension

compiling C sources

C compiler: x86_64-pc-linux-gnu-gcc -pthread -O3 -march=native -pipe -fomit-frame-pointer -fno-ident -fPIC



compile options: '-DNO_ATLAS_INFO=1 -Inumpy/core/include -Ibuild/src.linux-x86_64-2.7/numpy/core/include/numpy -Inumpy/core/src/private -Inumpy/core/src -Inumpy/core -Inumpy/core/src/npymath -Inumpy/core/src/multiarray -Inumpy/core/src/umath -Inumpy/core/include -I/usr/include/python2.7 -Ibuild/src.linux-x86_64-2.7/numpy/core/src/multiarray -Ibuild/src.linux-x86_64-2.7/numpy/core/src/umath -c'

x86_64-pc-linux-gnu-gcc: numpy/linalg/lapack_litemodule.c

x86_64-pc-linux-gnu-gcc: numpy/linalg/python_xerbla.c

/usr/bin/gfortran -Wall -s build/temp.linux-x86_64-2.7/numpy/linalg/lapack_litemodule.o build/temp.linux-x86_64-2.7/numpy/linalg/python_xerbla.o -L/usr/lib64 -L/usr/lib64 -Lbuild/temp.linux-x86_64-2.7 -llapack -lblas -lpython2.7 -lgfortran -o build/lib.linux-x86_64-2.7/numpy/linalg/lapack_lite.so

/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.3/../../../../lib64/crt1.o: In function `_start':

(.text+0x20): undefined reference to `main'

collect2: ld returned 1 exit status

/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.3/../../../../lib64/crt1.o: In function `_start':

(.text+0x20): undefined reference to `main'

collect2: ld returned 1 exit status

error: Command "/usr/bin/gfortran -Wall -s build/temp.linux-x86_64-2.7/numpy/linalg/lapack_litemodule.o build/temp.linux-x86_64-2.7/numpy/linalg/python_xerbla.o -L/usr/lib64 -L/usr/lib64 -Lbuild/temp.linux-x86_64-2.7 -llapack -lblas -lpython2.7 -lgfortran -o build/lib.linux-x86_64-2.7/numpy/linalg/lapack_lite.so" failed with exit status 1

----------------------------------------

Command /home/stefan/.virtualenvs/senatus_env/bin/python2.7 -c "import setuptools;__file__='/home/stefan/.virtualenvs/senatus_env/build/numpy/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-Ebkksh-record/install-record.txt --install-headers /home/stefan/.virtualenvs/senatus_env/include/site/python2.7 failed with error code 1 in /home/stefan/.virtualenvs/senatus_env/build/numpy

Exception information:
Traceback (most recent call last):
  File "/home/stefan/.virtualenvs/senatus_env/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/basecommand.py", line 104, in main
    status = self.run(options, args)
  File "/home/stefan/.virtualenvs/senatus_env/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/commands/install.py", line 250, in run
    requirement_set.install(install_options, global_options)
  File "/home/stefan/.virtualenvs/senatus_env/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/req.py", line 1133, in install
    requirement.install(install_options, global_options)
  File "/home/stefan/.virtualenvs/senatus_env/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/req.py", line 577, in install
    cwd=self.source_dir, filter_stdout=self._filter_install, show_stdout=False)
  File "/home/stefan/.virtualenvs/senatus_env/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/__init__.py", line 256, in call_subprocess
    % (command_desc, proc.returncode, cwd))
InstallationError: Command /home/stefan/.virtualenvs/senatus_env/bin/python2.7 -c "import setuptools;__file__='/home/stefan/.virtualenvs/senatus_env/build/numpy/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-Ebkksh-record/install-record.txt --install-headers /home/stefan/.virtualenvs/senatus_env/include/site/python2.7 failed with error code 1 in /home/stefan/.virtualenvs/senatus_env/build/numpy

看来，我同事计算机上的gfortran与他尝试在virtualenv中安装的numpy软件包不能很好地配合使用。知道为什么会这样吗？

Answer 1

如果设置了CFLAGS，CXXFLAGS或LDFLAGS，则可能会导致这种情况。问题在于那些环境变量会覆盖编译脚本中的设置，从而导致问题。

只需为调用pip命令而取消设置它们，就应该一切准备就绪。