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How to compile Gimp Painter on Fedora.

Gimp Painter or “gimp-for-painters” basically is a patch that transforms Gimp into a dedicated Painting Canvas. With it you can paint like a pro. But there are no easy ready to use compilation available, so you need to compile this beauty on your own.
To do so, you need to do three things. First you need to download Gimp source files. Second, you need to apply gimp-for-painters patch and third, you need to compile and copy gimp-paint-studio to the compiled gimp configuration folder.
So lets get going.

First and foremost you need to execute steps 1 to 3 as detailed in  Compiling Blender2.5 (if you haven't already done so)

As said above, first you need to download Gimp source files. You can download it from: ftp://ftp.gimp.org/pub/gimp/v2.6/gimp-2.6.7.tar.bz2

Second you download the patch from: http://sourceforge.jp/projects/gimp-painter/downloads/41325/gimp-painter--20090715.diff/

Third you download gimp-paint-studio from here: http://code.google.com/p/gps-gimp-paint-studio/

Now fire up your terminal and create a folder called gimptemp: mkdir gimptemp. Navigate into the newly created folder by typing cd gimptemp. Now copy all the three downloaded files using the file-manager in it. Right click on gimp-2.6.7.tar.bz2 and select extract here. This will create a gimp-2.6.7 folder and extract the file into it. You can also extract by typing tar -xjf gimp-2.6.7.tar.bz2 in the terminal.
Now do the following to patch Gimp: (provided that the file gimp-painter—20090715.diff is in the gimptemp folder).
Now do the following:
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cd gimp-2.6.7
patch -p1 < ../gimp-painter--20090715.diff
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This will patch the Gimp source file that you had just extracted in that folder
Now type the following in the terminal:
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./configure CFLAGS='-O3 -pipe -fomit-frame-pointer -funroll-all-loops -ffast-math -march=native -mtune=native -mmmx -msse -msse2 -msse3 -mssse3 -mfpmath=sse -funsigned-char -fno-strict-aliasing'
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Once done type the following:
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sudo make -j8
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The -j8 flag will use all the available cpu for compiling and this should considerably speed up your compilation time. If you have only a dual cpu, use -j3 and if you only have one cpu just type sudo make.

After it has compiled (hopefully without any errors) its time to install.
Type the following in the terminal
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sudo make install
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Your Gimp Painter is now ready for use, to further enhance its power, its time to install the "gimp-paint-studio" into the gimp configuration folder.
Right click on the downloaded file GPS 1_2_7z.7z or if you downloaded GPS 1_2_winrar.rar from http://code.google.com/p/gps-gimp-paint-studio/downloads/list and select extract here.
It is a good Idea to download the GPS manual too as well as the videos from the same site.
Now open the newly created folder GPS 1_2 and select and copy everything from there into the.gimp-2.6 folder.
The .gimp-2.6 folder is a hidden folder that resides in your home folder directory. To open it, go to your home folder and press Ctrl+H or view->show hidden files to show this hidden folder. (you can also navigate by typingcd ~/.gimp-2.6 in the terminal).
Double click to open .gimp-2.6 folder and copy everything from GPS 1_2 into it. You can also read the manual for further instructions.

Now that you have installed everything, you can fire-up you new Gimp painter by simply typing gimp in the terminal. Your new Gimp executable should be in the "user/local/bin" folder, so go ahead and create a new launcher for your newly created gimp-painter from the panel or the application menu and now you can launch it by simply clicking its icon.
Alternatively you can open a new terminal and type gimp or cd /usr/local/bin
and then type ./gimp-2.6 and that should fire up you newly compiled gimp painter.

That's it. Enjoy your new Gimp Painter.