xorg-dev 1:7.5+1ubuntu3 (i386 binary) in ubuntu lucid

 This metapackage provides the development libraries for the X.Org X Window
 System.
 .
 X Window System design documentation, manual pages, library reference
 works, static versions of the shared libraries, and C header files are
 supplied by the packages depended on by this metapackage.
 .
 Note that this is a convenience package for users and is not a package for
 Debian developers to have their package depend on.