I've seen this on a couple of packages that I can't remember but it's happening on ati-drivers atm. After compiling and installing but before actually merging it outputs "man:" as if to do the man pages and then stops, no activity. Hard to find any reference on the internet since there is no error message.

Ooh, actually after five minutes or so it just merged and gave this message

Code:
QA Notice: the following files contain runtime text relocations
 Text relocations force the dynamic linker to perform extra
 work at startup, waste system resources, and may pose a security
 risk.  On some architectures, the code may not even function
 properly, if at all.
 For more information, see http://hardened.gentoo.org/pic-fix-guide.xml
 Please include this file in your report:
 /var/tmp/portage/x11-drivers/ati-drivers-8.30.3-r1/temp/scanelf-textrel.log
TEXTREL usr/lib/xorg/modules/drivers/fglrx_drv.so
TEXTREL usr/lib/xorg/modules/dri/atiogl_a_dri.so
Thanks, Dom.