Compile In Linux
From FreeOrionWiki
Each linux distribution will come with varying components already installed, although some libraries may be older than the version required by FreeOrion. Hopefully the notes below will help to identify what is required for your particular distribution.
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[edit] Compiler
GCC 4.x is required. See this forum thread.
[edit] Platform specifics
[edit] Ubuntu
To build gigi or FreeOrion you first need to install the following packages using Synaptic (you will need to have the Universe repository included):
- python (should already be installed)
- scons
- libfreetype6 and libfreetype6-dev
- bcp
- libdevil1c2 and libdevil-dev
- libsdl1.2debian (should already be installed), libsdl1.2-dev
- graphviz and graphviz-dev
You can install all of these (including dependencies) from the command line using this:
sudo apt-get install python scons libfreetype6-dev bcp libdevil-dev libsdl1.2-dev libsdl-mixer1.2-dev graphviz-dev libalut-dev liblog4cpp5-dev
[edit] Ubuntu (FeistyFawn and EdgyEft)
The log4cpp libs are still missing, so lets install them:
sudo apt-get install liblog4cpp4 liblog4cpp4-dev
[edit] Ubuntu (DapperDrake and before)
Your Ubuntu log4cpp package is too old so you will need to download the required version from the Debian archive (liblog4cpp4 and liblog4cpp4-dev) then install them:
sudo dpkg --install liblog4cpp4_0.3.5-rc3-1_i386.deb sudo dpkg --install liblog4cpp4-dev_0.3.5-rc3-1_i386.deb
[edit] Ubuntu (Hardy and Intrepid) and Debian testing
sudo apt-get install python2.5-dev
sudo apt-get install libboost1.35-dev
This will automatically bring in the following dependencies for boost
gccxml libboost-date-time1.35-dev libboost-date-time1.35.0 libboost-filesystem1.35-dev libboost-filesystem1.35.0 libboost-graph1.35-dev libboost-graph1.35.0 libboost-iostreams1.35-dev libboost-iostreams1.35.0 libboost-program-options1.35-dev libboost-program-options1.35.0 libboost-python1.35-dev libboost-python1.35.0 libboost-regex1.35-dev libboost-regex1.35.0 libboost-serialization1.35-dev libboost-serialization1.35.0 libboost-signals1.35-dev libboost-signals1.35.0 libboost-system1.35-dev libboost-system1.35.0 libboost-test1.35-dev libboost-test1.35.0 libboost-thread1.35-dev libboost-thread1.35.0 libboost-wave1.35-dev libboost-wave1.35.0 libboost1.35-dev libboost1.35-doc
[edit] GiGi
Before attempting to build FreeOrion you will first need to build and install the GiGi library.
The GiGi source should be automatically downloaded from SVN along with the FreeOrion source code. If not, it can be manually downloaded:
svn co https://gigi.svn.sourceforge.net/svnroot/gigi/trunk gigi
Change into the GiGi directory and build the library:
cd freeorion/FreeOrion/GG scons sudo scons install
Since improvements and changes will be made to GiGi periodically, you should keep it up to date with:
cd freeorion/FreeOrion/GG svn update scons sudo scons install
[edit] FreeOrion
After GiGi is compiled and installed, compile FreeOrion:
cd freeorion/FreeOrion scons
When improvements have been made to FreeOrion, you should build the new version:
cd freeorion/FreeOrion svn update scons
[edit] Clean After Dependency Changes
It has been reported that on Gentoo, it may be necessary to clean your old build before rebuilding GiGi or FreeOrion after updates that make changes to dependencies or versions of dependencies used, such as Boost. To do this:
scons --clean
[edit] User stories
- Ubuntu 7.10 Gutsy Gibbon (September 10, 2007)
- Ubuntu 6.10 Edgy Eft (February 26, 2007)
- Ubuntu 5.04 Hoary Hedgehog (December 26, 2006)
- Gentoo (August 27, 2007)
- Fedora (June 5, 2006)
[edit] Compilation Errors
[edit] Bogus build errors
You may see errors during the build process like this:
Checking for freetype2 >= 9.0.0... no Checking for C header file ft2build.h... yes Checking for FT_Init_FreeType() in C library freetype... yes Checking DevIL version >= 1.6.1... (cached) no Checking for C header file IL/il.h... yes
These failed messages refer to scons not finding an installed package for these components. The subsequent successful checks show that despite there being no pkg-config ".pc" file, the required header and library files were successfully located.
[edit] SCons Can't Find Libraries/Dependencies
If SCons is not able to find a library (e.g. Boost, GiGi, etc) that is installed, you need to be certain SCons is looking in the right directories. Your distribution may install the library in an unexpected location, or you may have manually installed the library in a non-standard directory (e.g. /home/user/freeorion/Boost). You will need to configure scons to look in these additional directories. The command:
scons -h
lists the command-line options for SCons, including how to configure dependency directories. The command (add or remove options to match your needs):
scons configure prefix=/usr/local/freeorion with_boost_include=/usr/local/include/boost with_ogre_include=/usr/include/OGRE
will store these options permanently in the file options.cache. Run configure again, or edit options.cache, to change the settings.
[edit] Undefined reference to `_vsnprintf'
This is a bug in the latest version of Devil. GiGi's configure script should've taken care of it. If it didn't, you can fix the error yourself: Check the il_tiff.c file and add this line at the top:
#define _vsnprintf vsnprintf
and then recompile [1]
[edit] PI and PS2INCH are not declared
You may see these errors during compilation:
UI/TechTreeWnd.cpp:99: error: 'PI' was not declared in this scope UI/TechTreeWnd.cpp:1845: error: 'PS2INCH' was not declared in this scope
Recent versions of graphviz do not define PI or PS2INCH. See this forum post for the small patch to UI/TechTreeWnd.cpp.
[edit] boost 1.36
In your distribution is newer boost library. See this forum post
[edit] Runtime Errors
[edit] Segmentation Fault
If after compiling everything, you run freeorion and get a segmentation fault:
$ ./freeorion Segmentation fault
- This happened in generating new game screen on 64bit platform. You have to patch and compile FreeOrion. See this forum post
- You might be mixing dependencies compiled with different versions of GCC. See this forum post, this other forum post, this third post.
[edit] Video mode set failed: Couldn't find matching GLX visual
Your video mode is probably set to 16-bit instead of 32-bit, which is what FreeOrion defaults to. You need to either change your X server color depth to 32-bit, or edit the FreeOrion config file in ~/freeorion/config.xml and change color-depth from 32 to 16. You can also try the command line argement:
./freeorion --color-depth 16
[edit] IDE for development
- Text editor and scons to compile
- Eclipse is open source multiplatform IDE and can be used to compile FreeOrion, but plugins to support scons and subversion have to be installed. See howto Compile With Eclipse.

