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- Requirements
- ------------
- If you want to hack on the GIMP project, it will make your life easier
- to have the following packages (or newer versions) installed:
- * GNU autoconf 2.54
- - ftp://ftp.gnu.org/gnu/autoconf/
- * GNU automake 1.9 (automake 1.10 should also work)
- - ftp://ftp.gnu.org/gnu/automake/
- * GNU libtool 1.5
- - ftp://ftp.gnu.org/gnu/libtool/
- Fine GNU mirrors are listed at http://www.gnu.org/prep/ftp.html
- Beta software can be found at alpha.gnu.org.
- * pkg-config 0.16.0 (or preferably a newer version)
- - http://www.freedesktop.org/software/pkgconfig/
- * gtkdocize
- - http://ftp.gnome.org/pub/GNOME/sources/gtk-doc/
- * xsltproc
- - ftp://ftp.gnome.org/pub/GNOME/sources/libxslt/1.1/
- These are only the additional requirements if you want to compile from
- the git repository. The file INSTALL lists the various libraries we
- depend on.
- Compilation
- -----------
- If you are accessing gimp via git, then you will need to take several
- steps to get it to compile. You can do all these steps at once by
- running:
- gimp/trunk$ ./autogen.sh
- Basically this does the following for you:
- gimp/trunk$ aclocal-1.9; libtoolize; automake-1.9 -a;
- gimp/trunk$ autoconf; intltoolize --automake
- The above commands create the "configure" script. Now you can run the
- configure script in gimp/trunk to create all the Makefiles.
- Before running autogen.sh or configure, make sure you have libtool in
- your path. Also make sure glib-2.0.m4 glib-gettext.m4, gtk-2.0.m4,
- pkg.m4 and intltool.m4 are either installed in the same
- $prefix/share/aclocal relative to your automake/aclocal installation
- or call autogen.sh as follows:
- $ ACLOCAL_FLAGS="-I $prefix/share/aclocal" ./autogen.sh
- Note that autogen.sh runs configure for you. If you wish to pass
- options like --prefix=/usr to configure you can give those options to
- autogen.sh and they will be passed on to configure.
- If AUTOGEN_CONFIGURE_ARGS is set, these options will also be passed to
- the configure script. If for example you want to enable the build of
- the GIMP API reference manuals, you can set AUTOGEN_CONFIGURE_ARGS to
- "--enable-gtk-doc". Please note that you will then need a recent
- version of gtk-doc as well as a working setup for handling DocBook/XML.
- If you do not have a recent version of gtk-doc, you can pass the
- option "--disable-gtk-doc" to autogen.sh. This will completely
- disable the support for gtk-doc so you will not be able to generate
- the API documentation.
- Git
- ---
- GIMP is available from GNOME Git. You can use the following commands
- to get GIMP from the the git server:
- $ git clone git://git.gnome.org/gimp
- You can read more on using GNOME's git service at these URLs:
- http://live.gnome.org/Git
- http://www.kernel.org/pub/software/scm/git/docs/
- You will also need relatively new stable releases of glib, pango, atk,
- gtk+, cairo, gtkhtml2, etc. for building GIMP, which you can get as a
- part of recent Linux distribution releases.
- Patches
- -------
- The best way to submit patches is to publish your git repository and
- ask developers to git-fetch from you.
- For bug fixes where the patch is small you can file a bug report at
- http://bugzilla.gnome.org/ and attach your patch to it as a plain text
- file, not compressed. If your patch is reasonably small you can submit
- it to the gimp-developer@lists.xcf.berkeley.edu mailing list. You can
- create the patch file with git-format-patch
- If the patch needs to be discussed, you should also consider using the
- mailing list instead of Bugzilla because bug reports tend to be hard
- to read if they contain too many comments. For the code, please try to
- follow the guidelines given in Hackordnung, below.
- Auto-generated Files
- --------------------
- Please notice that some files in the source are generated from other
- sources. All those files have a short notice about being generated
- somewhere at the top. Among them are the files ending in pdb.[ch] in
- the libgimp directory and the files ending in cmds.c in the app/pdb
- subdirectory. Those are generated from the respective .pdb files in
- tools/pdbgen/pdb.
- Hackordnung
- -----------
- We encourage you to follow the GIMP coding style throughout the GIMP
- project. For the core components (application and libs) this coding
- style is enforced. The GIMP coding style is defined as follows:
- * There's a single space between the function name and the opening
- paren.
- * Function names are lowercase, words separated by underscores.
- * Macros and enums are all uppercase, words seperated by
- underscores.
- * Types are all words capitalized, no separators between words.
- * All functions in header files need to be prototyped.
- * Indentation rules are GNU coding style, in particular:
- - 2 characters indentation level
- - Do not use tabs (of course your editor can accept the TAB key
- as a command, typically to indent the current line properly
- or to add spaces at the cursor until the next multiple of 8
- columns, but it should not put TAB characters in the file).
- - When editing files that still have TABs in them, make sure your
- editor interprets the TABs correctly, that is, has tab stops
- at 8 column intervals.
- - Opening braces are on a new line and indented one level.
- - Function header have the return type on one line, the name
- starting in the first column of the following line. All
- parameters are prototyped and there's a new line for each.
- Try to make use of GLib's object system as much as possible. Do not
- create wrappers around functions of parent classes. If you end up
- duplicating code, try to create a common parent class and implement
- the common methods there.
- Don't include headers in headers except where unavoidable (e.g. for
- deriving objects). Opaque typedefs go to app/base/base-types.h,
- app/core/core-types.h etc. See devel-docs/includes.txt for a
- detailed description of the include policy.
- Don't use the GTK wrappers around the GLib object and signal system.
- One goal of GIMP development is to make the GIMP code more readable
- and understandable. Please help us to achieve this goal by cleaning up
- the present code and make sure that all new code follows the coding
- guidelines.
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