Affected by the same pkglibdir errors others are seeing, like with rrdtool & grub. Which I can confirm. I'm also having the same issue with graphviz. Wasn't sure if it's an astemic errata or each ebuild needs amended.
janice rrdtool # cat /var/tmp/portage/sys-devel/icecream-0.9.7/temp/automake.out
***** automake *****
***** PWD: /var/tmp/portage/sys-devel/icecream-0.9.7/work/icecc-0.9.7
***** automake --add-missing --copy --foreign
client/Makefile.am:4: `pkglibdir' is not a legitimate directory for `SCRIPTS'
Someone on IRC told me that automake-1.11 is to blame, and that putting WANT_AUTOMAKE="1.10" or WANT_AUTOMAKE="1.9" into /etc/make.conf should make the build go through - and indeed, it does.
I can confirm, that the icecream build works with automake < 1.11.
+ 13 Jan 2012; Kacper Kowalik <email@example.com>
+ +files/0.9.7-automake-1.11.2.patch, icecream-0.9.7.ebuild:
+ Fix autoreconf with >=automake-1.11.2 wrt bug #397715 by Jason Mours