OpenBLAS，Numpy，Scipy For Linux(编译最新完成)

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1. Compile OpenBLAS:

   ~$ git clone git://github.com/xianyi/OpenBLAS
   ~$ cd OpenBLAS && make FC=gfortran
   ~$ sudo make PREFIX=/opt/OpenBLAS install
   

   If you don't have sudo rights you could set PREFIX= to a directory you have write privileges to (just modify the corresponding steps below accordingly).

2. Make sure that the directory containing libopenblas.so is in your shared library search path.

   • To do this locally, you could edit your ~/.bashrc file to contain the line

     export LD_LIBRARY_PATH=/opt/OpenBLAS/lib:$LD_LIBRARY_PATH
     

     The LD_LIBRARY_PATH environment variable will be updated when you start a new terminal session (use $ source ~/.bashrc to force an update within the same session).

   • you can also set the path in your /etc/profile to contain the bellow line:
     

     export LD_LIBRARY_PATH=/opt/OpenBLAS/lib:$LD_LIBRARY_PATH

   • remember to use the command: source /etc/profile

   • Another option that will work for multiple users is to create a .conf file in /etc/ld.so.conf.d/ containing the line /opt/OpenBLAS/lib, e.g.:

     ~$ sudo -s "echo '/opt/OpenBLAS/lib' > /etc/ld.so.conf.d/openblas.conf"
     

   Once you are done with either option, run

   ~$ sudo ldconfig
   

3. Install Numpy

4. Grab the numpy source code:

   ~$ git clone https://github.com/numpy/numpy
   ~$ cd numpy
   

5. Copy site.cfg.example to site.cfg and edit the copy:

   ~$ cp site.cfg.example site.cfg
   ~$ nano site.cfg
   

   Uncomment these lines:

   ....
   [openblas]
   libraries = openblas
   library_dirs = /opt/OpenBLAS/lib
   include_dirs = /opt/OpenBLAS/include
   ....
   

6. Check configuration, build, install (optionally in a virutalenv)

   ~$ python setup.py config
   

   The output should look something like this:

   ...
   openblas_info:FOUND:libraries = ['openblas', 'openblas']library_dirs = ['/opt/OpenBLAS/lib']language = cdefine_macros = [('HAVE_CBLAS', None)]FOUND:libraries = ['openblas', 'openblas']library_dirs = ['/opt/OpenBLAS/lib']language = cdefine_macros = [('HAVE_CBLAS', None)]
   ...
   

   Then just build and install:

   ~$ python setup.py build && python setup.py install

Install Scipy

将numpy使用的更改过的site.cfg文件拷贝到scipy根目录下，执行相同的编译和安装过程即可。

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