Seamonkey-2.22 doesn't build: configure fails with errors 1. "--with-system-png requested but no working libpng found" 2. "Insufficient libpng version (10517 required)." libpng is installed, indeed: $ libpng-config --version 1.5.15 Reproducible: Always $ emerge -pqv '=www-client/seamonkey-2.22::gentoo' [ebuild U ] www-client/seamonkey-2.22 [2.21-r1] USE="alsa crypt dbus ipc jit libnotify startup-notification system-jpeg system-sqlite wifi -chatzilla -custom-cflags -custom-optimization -debug -gstreamer -minimal -pulseaudio -roaming (-selinux) -system-cairo -system-icu" LINGUAS="-be -ca -cs -de -en_GB -es_AR -es_ES -fi -fr -gl -hu -it -ja -lt -nb_NO -nl -pl -pt_PT -ru -sk -sv_SE -tr -uk -zh_CN -zh_TW"
Created attachment 362512 [details] emerge --info
Created attachment 362514 [details] build log
Created attachment 362518 [details] build env
...well, the funny part here is that libpng-1.5.17 is in the tree, but only as binary slot. That's not a problem with unstable, where 1.6.6 already is, but might be for stable.
firefox-25.0-r1 in the mozilla overlay also has this problem.
+ 04 Nov 2013; Lars Wendler <polynomial-c@gentoo.org> seamonkey-2.22.ebuild: + Fixed dependencies on libpng (bug #490314) and sqlite. + Thanks for reporting.