libgl1-mesa-swx11-dev 7.9+repack-1ubuntu6 (i386 binary) in ubuntu natty

 This package provides the development environment required for
 compiling programs with Mesa. For a complete description of Mesa,
 please look at the libgl1-mesa-swx11 package.
 .
 This library provides a pure software rasteriser; it does not provide
 a direct rendering-capable library, or one which uses GLX. For that,
 please see libgl1-mesa-dev.