emerge =x11-ssh-askpass-1.2.4.1 producese an error: (/usr/bin/xmkmf:49): 49: usage="usage: $0 [-a] [top_of_sources_pathname [current_directory]]" Interestingly enough, it would compile by hand in the current direcotry. While tracking things down I discovered an error in <=x11-misc/imake-1.0.6 which caused about 40 blank lines to be prepended to xmkmf. This was fixed in x11-misc/imake-1.0.7 (which is unfortunately not marked stable). =net-misc/x11-ssh-askpass-1.2.4.1 builds without error if you update imake to 1.0.7. I am not sure of the exact cause. Also, this built fine earlier, but failed on an "emerge -e world". I hope this helps.
I'm late at commenting, but imake 1.0.7 is now stable. I added a tweak to the dependency to require 1.0.7 when compiling. Thanks for the note and testing.
Thanks for the report. Fixed in http://gitweb.gentoo.org/repo/gentoo.git/commit/?id=31dbe3ac88656a14f83832490690745f8f2b030e