Sunday, April 15, 2012

ipython-0.12 installation in Cygwin

ipython with numpy+scipy+matplotlib Installation Procedures: (as of April 2012)

1. Install some packages from cygwin setup.exe:
   * liblapack
   * fortran compilers and some fortran packages (best to download all related to fortran)
   * libgfortran
   * python packages
   * libpng
   * freetype2
   * c/c++ compilers
   * libboost

2. Install libffi (required for ipython)
   * Download libffi-3.0.11
   * Extract folder
   * Configure the installation
     ./configure
   * Install
     make install

3. Install ATLAS (Automatic Tuned Linear Algebra Software) (required for numpy+scipy)
   * caution: this installation may cause stress due to the installation time, which may take all day.
   * Download atlas-3.8.4
   * Extract folder
   * Make build folder (Installation procedure is written inside INSTALL.txt)
     mkdir cygwin_build
   * Configure (there is only 32-bit version)
     ../configure -b 32
   * Install
     make
     make check
     make ptcheck
     make time
     make install

4. Install nose (testing package for scipy+numpy)
   * Download nose-1.1.2
   * Extract folder
   * Build file
     python setup.py build
   * Install
     python setup.py install


5. Install numpy (required for matplotlib and for.... python programmer.)
   * Download numpy-1.6.1
   * Extract folder
   * Build file (I faced some bugs when doing this, if you also happen to face them, I'll try my best to help)
     python setup.py build
   * Install
     python setup.py install

6. Install scipy (required for.... python programmer.)
   * Download scipy-0.10.1
   * Extract folder
   * Build file
     python setup.py build (also some bugs here)
   * Install
     python setup.py install

7. Install matplotlib (required for ipython)
   * Download matplotlib-1.1.0
   * Extract folder
   * Copy the setup.cfg.template to setup.cfg
     cp setup.cfg.template setup.cfg
   * Uncomment line 70
     tkagg = False
   * Try to build the program
     python setup.py build
   * If there is an error saying unable to remap a dll file or such, we have to run the rebase command of cygwin, using CO\MMAND PROMPT:
     cd C\cygwin\bin
     ash
     PATH=. rebaseall -v

     ...wait until it finishes

   * Try to build the program once again
     python setup.py build
   * Look at the pkg_config, if it says it's not configured right for libffi package, put this in your .bashrc:
     export PKG_CONFIG_PATH=/usr/local/lib/pkconfig (after making sure that libffi.pc is here)
   * And also make sre that you satisfied all dependencies.
   * After the build succeed, install
     python setup.py install

8. FINALLY. Install ipython.
   * Download ipython-0.12
   * Extract folder
   * Build file
     python setup.py build (also some bugs here)
   * Install
     python setup.py install

9. Now that we finished all installations, let's run some tests.
   * open ipython
     ipython --pylab
   * show a sin(x) figure     
      x = arange(-5,5,0.1)
      y = sin(x)
      plot(x,y)
      savefig("sin_x.png")     
   * And that code should have shown you a figure of a beautiful sin(x) wave:



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