JPEG Support for Python 2.7's PIL Module on OS X Lion

My PIL module refuse to process jpeg image. It says that there is no decoder jpeg on my system. It's no good  since I want to process that kind of file using PIL in future, and my older iPhoto picture on my 13 inch MacBook Pro is generally in jpeg format too.

Here the snapshot

Nugrohos-MacBook-Pro:olah gambar nugroho$ python olahgambar.py 
Program Image Enchancement
Oleh Nugroho Adi Pramono
275514
===========================
format awal:  JPEG 2448x3264 RGB
konversi ke grayscale
Traceback (most recent call last):
  File "olahgambar.py", line 14, in 
    gbw = gb.convert("L")
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PIL/Image.py", line 679, in convert
    self.load()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PIL/ImageFile.py", line 189, in load
    d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PIL/Image.py", line 385, in _getdecoder
    raise IOError("decoder %s not available" % decoder_name)
IOError: decoder jpeg not available
Nugrohos-MacBook-Pro:olah gambar nugroho$ 

So I googling for it and found libjpeg at http://www.ijg.org/files/, download, exctract and install it using magic UNIX words ./configure, make, make install

Nugrohos-MacBook-Pro:~ nugroho$ cd Downloads/jpeg-8c/
Nugrohos-MacBook-Pro:jpeg-8c nugroho$ ./configure 
Nugrohos-MacBook-Pro:jpeg-8c nugroho$ make
Nugrohos-MacBook-Pro:jpeg-8c nugroho$ make test
rm -f testout*
./djpeg -dct int -ppm -outfile testout.ppm  ./testorig.jpg
./djpeg -dct int -bmp -colors 256 -outfile testout.bmp  ./testorig.jpg
./cjpeg -dct int -outfile testout.jpg  ./testimg.ppm
./djpeg -dct int -ppm -outfile testoutp.ppm ./testprog.jpg
./cjpeg -dct int -progressive -opt -outfile testoutp.jpg ./testimg.ppm
./jpegtran -outfile testoutt.jpg ./testprog.jpg
cmp ./testimg.ppm testout.ppm
cmp ./testimg.bmp testout.bmp
cmp ./testimg.jpg testout.jpg
cmp ./testimg.ppm testoutp.ppm
cmp ./testimgp.jpg testoutp.jpg
cmp ./testorig.jpg testoutt.jpg
Nugrohos-MacBook-Pro:jpeg-8c nugroho$ sudo make install

reinstall PIL

PIL 1.1.7 SETUP SUMMARY
--------------------------------------------------------------------
version       1.1.7
platform      darwin 2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34)
              [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]
--------------------------------------------------------------------
--- TKINTER support available
--- JPEG support available
--- ZLIB (PNG/ZIP) support available
*** FREETYPE2 support not available
*** LITTLECMS support not available
--------------------------------------------------------------------
To add a missing option, make sure you have the required
library, and set the corresponding ROOT variable in the
setup.py script.

Ubuntu 11.10 Oneiric Ocelot On OS X Lion's VBox (NAT and Host-Guest Sharing Folder)

After installing Ubuntu 11.10 on Mac OS X Lion using VirtualBox, here first impression of Oneiric Ocelot



There is dock at left, like on Mac.

Network is works flawlessy, I can surf internet using firefox, its NAT configuration come by default while installing it.

From Oneiric Ocelot

Firefox run at fullscreen(I mean ubuntu screen), just like Lion's or iPad's Safari (Lion's version of firefox didn't auto fullscreen yet). We can windowed-mode-ed it by hovering mouse at top edge of screen, it'll show menu-bar too

Hover mouse at top

From Oneiric Ocelot

It's windowed firefox

From Oneiric Ocelot

 If we click dash home, we'll got launchpad like (just like iPad or Lion's launchpad). At second tab, there's apps available to download.

From Oneiric Ocelot

 To access shared folder on Lion named vbox, I opened terminal by clicking Dash home and type terminal on search box

From Oneiric Ocelot

 First create directory

aravir@aravir-VirtualBox:~$mkdir vbox

mount shared vbox on lion using this command

aravir@aravir-VirtualBox:~$sudo mount -t vboxsf vbox vbox 

at screenshot you know it generate error because ubuntu did'nt recognize vboxsf filesystem. To introduce it, guest addition must be installed.

From Oneiric Ocelot

From Oneiric Ocelot

From Oneiric Ocelot

From Oneiric Ocelot

Failed. Guest addition need root privilege.

aravir@aravir-VirtualBox:~$cd /Media/VBOXADDITIONS_4.1.6_74713
$sudo ./VBoxLinuxAdditions.run

After guest addition installed and the system restarted (it's support full screen on my Macbook monitor now), retype the command above, and done

 Vbox directory before mounted

From Oneiric Ocelot

After mounted

From Oneiric Ocelot

Installing Python-2.7's Imaging Library Module on OS X Lion

PIL, as its name suggest, is an imaging library for python. I used PIL to get every pixel of an image as 2x2 array information. With that I could modify it with many possibilities; edge detection, black and white transformation, log transformation, creating watermark, etc.

{update: I install this PIL module on my OS X El Capitan too, :), and easier } 



Installing PIL is an easy task, if we have its prerequities installed. Just download it and extract it and then install using this command

Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ python setup.py install
running install
running build
running build_py
creating build
creating build/lib.macosx-10.6-intel-2.7
...
unable to execute gcc-4.2: No such file or directory
error: command 'gcc-4.2' failed with exit status 1
Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ 

Oops, it is failed to install, it tell me that there is no gcc-4.2 on my machine, and that's true. I've modified my /usr/bin/gcc to point /usr/local/bin/gcc.

I have gcc 4.2 from Xcode4.2, which actually llvm-gcc. My existing gcc is gcc-4.6.2 so I cheated… I created symlink named gcc-4.2 on /usr/bin pointing /usr/local/bin/gcc

Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ ln -s /usr/local/bin/gcc /usr/bin/gcc-4.2
ln: /usr/bin/gcc-4.2: Permission denied
Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ sudo ln -s /usr/local/bin/gcc /usr/bin/gcc-4.2
Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ 

Still error, :(

gcc-4.2: error: x86_64: No such file or directory
gcc-4.2: error: unrecognized option ‘-arch’
gcc-4.2: error: unrecognized option ‘-arch’
error: command 'gcc-4.2' failed with exit status 1

Hm, maybe if I'm linking /usr/bin/gcc-4.2 to /usr/bin/llvm-gcc-4-2; it's gcc-4.2 after all, if we ignore llvm (don't know what is it stand for). It doesn't hurt if I'm trying, so..

Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ sudo rm /usr/bin/gcc-4.2 
Password:
Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ sudo ln -s /usr/bin/llvm-gcc-4.2 /usr/bin/gcc-4.2
Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ python setup.py install
running install
running build
running build_py
running build_ext
-
--------------------------------------------------------------------
PIL 1.1.7 SETUP SUMMARY
--------------------------------------------------------------------
version       1.1.7
platform      darwin 2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34)
              [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]
--------------------------------------------------------------------
--- TKINTER support available
*** JPEG support not available
--- ZLIB (PNG/ZIP) support available
*** FREETYPE2 support not available
*** LITTLECMS support not available
--------------------------------------------------------------------
creating /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/PIL.pth
Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ 

Wow, success 

Well, no need gcc4.6.2 afterall, just create symbolic link of llvm-gcc-4.2 named gcc-4.2,:)

test

Nugrohos-MacBook-Pro:Imaging-1.1.7 nugroho$ python
Python 2.7.2 (v2.7.2:8527427914a2, Jun 11 2011, 15:22:34) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import image
Traceback (most recent call last):
  File "", line 1, in 
ImportError: No module named image
>>> import Image
>>> 

OK

Install GCC 4.6.2 on OS X Lion (success)

Still failed, for not able to access gcc-4.6.2 automatically (have to access ~/gcc462/bin), I install binary GCC from HPC. So I'm extracted gcc-lion.tar.gz. For my surprise, it's extracted with some hierarchy like usr/local/bin, usr/local/include, … and I supposed to copy it to root folder. In that case, my Xcode4.2's gcc would still intact because it's in /usr/bin .

 I wonder if all gcc compilation result'll stored to /usr/local if we didn't pass any parameter, so I checked my /usr/local/bin directory

Nugrohos-MacBook-Pro:/ nugroho$ cd usr/local/bin/
Nugrohos-MacBook-Pro:bin nugroho$ ls
2to3gfortran                  python-config    smtpd.py
2to3-2.7    idle     python2.7    smtpd2.7.py
c++     idle2.7     python2.7-32    x86_64-apple-darwin11.2.0-c++
cpp     jcf-dump    python2.7-config   x86_64-apple-darwin11.2.0-g++
g++     pydoc     pythonw     x86_64-apple-darwin11.2.0-gcc
gcc     pydoc2.7    pythonw-32    x86_64-apple-darwin11.2.0-gcc-4.6.2
gcj     python     pythonw2.7    x86_64-apple-darwin11.2.0-gcj
gcov     python-32    pythonw2.7-32    x86_64-apple-darwin11.2.0-gfortran

There is gcc in it. Is in gcc-4.2?

Nugrohos-MacBook-Pro:bin nugroho$ ./gcc --version
gcc (GCC) 4.6.2
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Yes, it is gcc-4.6.2? So, I replace gcc symlink previously  pointed to /usr/bin/llvm-gcc to /usr/local/bin/gcc

Nugrohos-MacBook-Pro:bin nugroho$ which gcc
/usr/bin/gcc
Nugrohos-MacBook-Pro:bin nugroho$ which llvm-gcc
/usr/bin/llvm-gcc
Nugrohos-MacBook-Pro:bin nugroho$ sudo ln -s gc
gcc   gcj   gcov  
Nugrohos-MacBook-Pro:bin nugroho$ sudo ln -s gcc /usr/bin/gcc
Password:
ln: /usr/bin/gcc: File exists
Nugrohos-MacBook-Pro:bin nugroho$ sudo mv /usr/bin/gcc /usr/bin/gccOLD
Nugrohos-MacBook-Pro:bin nugroho$ sudo ln -s gcc /usr/bin/gcc
Nugrohos-MacBook-Pro:bin nugroho$ gcc
gcc: fatal error: no input files
compilation terminated.
Nugrohos-MacBook-Pro:bin nugroho$ gcc --version
gcc (GCC) 4.6.2
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Nugrohos-MacBook-Pro:bin nugroho$ 

Hooray, HPC binary is left untouched, :)

Ubuntu 11.10 Oneiric Ocelot on OS X Lion via Virtual Box

It's long time since my MacBook Pro had ubuntu installed. Curious about new release of ubuntu, I decided to download .iso file via torrent network and installed it on my Mac via VirtualBox as I don't want to dual booting my Mac again (the way I did several years ago).



 I downloaded 64-bit version of Oneiric Ocelot and it's installed without problem.

 From screenshot below, we know ubuntu team has improved their installation method. While the system is busy copying file, we're prompted to fill our detail of instalation; keyboard, time zone, username. Such an efficient method.

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

Installing GCC 4.6.2 on OSX Lion

After searching how to's, compiling from source, installing Snow Leopard version of Xcode (on its DVD) and installing light alternate gcc 4.2 version without success (or success but not satisfied), I  installed Xcode 4.2 on my OS X Lion. Alas, Apple ship its own GCC compiler, llvm-gcc, instead GCC. So I download tar.gz version of GCC-4.6.2 from GNU and try to install it

From Blogsy Photos

From Blogsy Photos

check to know what dependencies I don't have by typing

./configure

the result is

 
…
configure: error: Building GCC requires GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0+.
…

So, I download it mpc (http://www.multiprecision.org/index.php?prog=mpc&page=download), mpfr(http://www.mpfr.org/mpfr-current/#download) and gmp(http://gmplib.org/). I don't know why gmp's download always ended by error, duh. Trying to 'torrenting' it via burnbit but still get error. I was forced to use ftp connection via Finder (Command-K) and done. Installing these dependencies is easy task, just unzip/untar these archive, cd to its directory and type three magical UNIX installation words.

$./configure
$make
$sudo make install

OK, now it's GCC time. Extract GCC zipped file, cd to its directory

./configure
make 
sudo make install

You can add make command to make -j 4 if you have multicore processor and want to make process processed in parallel. "Make" process is very long time process.
Look at gnumake, cc1 , sh , and llvm-gcc-4.2 processes. They're processed in parallel.

From Blogsy Photos

From Blogsy Photos

From Blogsy Photos

 OMG, after long awaiting time, I got an error, something about libgfortran. (update: it's succeed indeed despite of error, it actually compiled gcc but not in Lion path, so Lion's still use llvm-gcc version , I post the update here) After a minute of thinking, I decide to compile just C for now, and build on separate directory and output-ed it on my home directory

Nugrohos-MacBook-Pro:gcc-4.6.2 nugroho$ mkdir build
Nugrohos-MacBook-Pro:gcc-4.6.2 nugroho$ cd build
Nugrohos-MacBook-Pro:build nugroho$ ../configure --prefix=$HOME/gcc462 --enable-languages=c

These command will build GCC on 'build' directory and store the compilation result on gcc462 directory on my home folder. If you are interested in building only a limited set of languages, just like me, you could also specify this option in the configure line. For example if you need only C, C++ and Fortran just append this to the above line: --enable-languages=c,c++,fortran

First Impression of Portable Python

I'm curious about Portable Python I found several days ago even I don't have windows machine. So I borrowed my mom's Pentium III Dynabook Satellite with XP installed, and installed Portable Python in my 8GB Transcend JetFlash USB pendrive. Pathetic though; why do I installed it to pen drive if I already have Windows machine? Yeah, because it can't be installed via my MacBook Pro with Lion of course. Anyway here's some screenshot

From Blogsy Photos

Portable Python can be acessed interactively via command prompt like this

From Blogsy Photos

or throught PyScripter, but we'll face "coud not connect to the python engine server. The remote interpreter and debugger is not available" error because windows's blocking pythonw like this

From Blogsy Photos

From Blogsy Photos

Clicking unblock will allow PyScripter run

From Blogsy Photos