仍然无法安装scipy，因为在Mac OS X上安装gcc后缺少fortran编译器

Question

我已阅读并按照this answer安装scipy/numpy/theano。但是，在brew安装gcc之后，它仍然失败了Fortran编译器缺少的错误。虽然HomeBrew安装了gcc-4.8，但它没有安装任何gfortran或g95命令。我想gfortran可能只是一个gcc的synonymy，然后创建一个符号链接

$ cd /usr/local/bin 
$ ln -s gcc-4.8 gfortran 
$ pip install scipy 

然后检测gfortran命令，但仍抱怨没有Fortran编译

customize Gnu95FCompiler 
Found executable /usr/local/bin/gfortran 
customize NAGFCompiler 
Could not locate executable f95 
customize AbsoftFCompiler 
Could not locate executable f90 
Could not locate executable f77 
customize IBMFCompiler 
Could not locate executable xlf90 
Could not locate executable xlf 
customize IntelFCompiler 
Could not locate executable ifort 
Could not locate executable ifc 
customize GnuFCompiler 
Could not locate executable g77 
customize G95FCompiler 
Could not locate executable g95 
customize PGroupFCompiler 
Could not locate executable pgfortran 
don't know how to compile Fortran code on platform 'posix' 
building 'dfftpack' library 
error: library dfftpack has Fortran sources but no Fortran compiler found 

还有什么应该怎么办？

Answer 1

通过升级pip修复，即使我刚刚在同一天重新安装我的pip/virtualenv。

(mypy)MAC0227: $ pip install --upgrade pip 
... 
(mypy)MAC0227: $ pip install theano 
/Users/me/.virtualenvs/mypy/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. 
    InsecurePlatformWarning 
Requirement already satisfied (use --upgrade to upgrade): theano in /Users/me/.virtualenvs/mypy/lib/python2.7/site-packages 
Requirement already satisfied (use --upgrade to upgrade): numpy>=1.6.2 in /Users/me/.virtualenvs/mypy/lib/python2.7/site-packages (from theano) 
Collecting scipy>=0.11 (from theano) 
/Users/me/.virtualenvs/mypy/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:79: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning. 
    InsecurePlatformWarning 
    Downloading scipy-0.15.1-cp27-none-macosx_10_6_intel.macosx_10_9_intel.macosx_10_9_x86_64.macosx_10_10_intel.macosx_10_10_x86_64.whl (19.8MB) 
    100% |████████████████████████████████| 19.8MB 23kB/s 
Installing collected packages: scipy 
Successfully installed scipy-0.15.1 

Answer 2

以下为我工作：

sudo apt-get install gfortran

我的系统上：

的Ubuntu 15.10（Linux的4.2.0-19泛型＃23，Ubuntu的x86_64的x86_64的x86_64的GNU/Linux）

Answer 3

这取决于gcc版本。检查你的gcc版本：

Depends: gcc-4.8-base (= 4.8.2-19ubuntu1) but 4.8.4-2ubuntu1~14.04 is to be installed 

更新您的gcc版本： http://ubuntuhandbook.org/index.php/2013/08/install-gcc-4-8-via-ppa-in-ubuntu-12-04-13-04/