make[2]: Entering directory `/var/tmp/portage/media-libs/libass-0.9.11/work/libass-0.9.11/test' CC test-test.o test.c: In function ‘write_png’: test.c:37:9: error: dereferencing pointer to incomplete type make[2]: *** [test-test.o] Error 1 make[2]: Leaving directory `/var/tmp/portage/media-libs/libass-0.9.11/work/libass-0.9.11/test' make[1]: *** [all-recursive] Error 1
15 Feb 2011; Alexis Ballier <aballier@gentoo.org> libass-0.9.11.ebuild: drop png useflag: it is only needed for the test program that we do not install and causes libass.so to be linked needlessly to libpng... moreover, it doesnt build against libpng15, bug #354997 -> fixed see $URL for the proposed fix upstream.