Headers are generated during configure stage and may differ per platform, that is why they are under architecture. Current headers for Linux have been generated
for a x86-64 CentOS 6.5 (but they are compatible with RHEL 6.4 and x86-64 Linuxes in general).

If you want to build a newer version of library, see build/HowToBuild_Epic.txt

-RCL