If you happen to be on an AIX 5.x host using [Gentoo Prefix][1]. Then you might see something like this eventually: /bin/sh[3]: /home/jolexa/portage/aix-5.3/bin/chmod: arg list too long This is caused by build systems that use wildcards or even ebuilds that have no issues on a normal GNU/Linux system. To work around this, you need to change the ARG/ENV list size in 4K byte blocks. The default value in AIX 5.x is 6.

[Gentoo Prefix][1] now supports Itanium Linux and AIX-6.1 (with caveats). ia64-linux mostly works out of the box. There is one small issue with scanelf which I would like to fix if I ever find the time. (‘scanelf(9292): unaligned access to …’ – low priority because everything still appears to work). We previously supported ia64-linux but it was removed because we didn’t think anyone used it – and no one responded when we asked.