I was trying to install another version of x-server, it needed lots of packages including mesa and it needed a lot of, too. I installed over 15 packages... I found every package by googling and installed without any problems.
But I can not found "libtizcore" package. I am stuck at ./configure command.
Package libtizcore was not found in the pkg-config search path. Perhaps you should add the directory containing `libtizcore.pc' to the PKG_CONFIG_PATH environment variable No package 'libtizcore' found checking for RADEON... yes configure: error: --enable-llvm is required when building r300