Still can't install scipy due to missing fortran compiler after brew install gcc on Mac OS X
Solution 1
Fixed by upgrading pip, even though I just installed my pip/virtualenv the first time anew on the same day.
(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
Solution 2
The following worked for me:
sudo apt-get install gfortran
on my system:
Ubuntu 15.10 (Linux 4.2.0-19-generic #23-Ubuntu x86_64 x86_64 x86_64 GNU/Linux)
Solution 3
For macOS, installed Fortran and it worked.
$ brew install gfortran
Solution 4
For Arch Linux, you'll need to install core/gcc-fortran
, although I realized that I could just change the version of scipy
in my requirements.txt
file to the newest version available to fix the issue, too.
teddy
Updated on July 09, 2022Comments
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teddy almost 2 years
I have read and followed this answer to install scipy/numpy/theano. However, it still failed on the same error of missing Fortran compiler after brew install gcc. While HomeBrew installed the gcc-4.8, it didn't install any gfortran or g95 commands. I figure gfortran may be just a synonymy of gcc, then I create a symlink
$ cd /usr/local/bin $ ln -s gcc-4.8 gfortran $ pip install scipy
Then it detects the gfortran command but still complaining no Fortran compiler
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
What else should I do?
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Blaszard over 7 yearsOP asked about OS X.
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culebrón over 6 yearsAnyway, this worked for me on Ubuntu rather than upgrading pip.
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smcs over 2 yearsWorked for me on Raspberry Pi OS 64 bit