On 2019-08-27, Gentoo developers removed media-libs/jasper from the tree: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=77aebdf0b31765b33831ca5b02ea3d98f13c46cd On 2019-08-28, Gentoo developers removed the jpeg2k USE flag (and the ability to compile jpeg2000 support) from all media-gfx/graphicsmagick ebuilds: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f6d9a9f15439cac80642e87a41bffa4e0b870d0d On 2023-04-12, Gentoo developers readded media-libs/jasper to the tree: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=6a76c8c2747a42f6d7e7df306f103c67febeb129 All of the media-gfx/graphicsmagick ebuilds still force "--without-jp2" in src_configure(), which means that users can not compile jpeg2000 support into GraphicsMagick (yes, I wish they would use openjpeg instead of JasPer, which, at a minimum, would not require the installation of an additional package, but not my choice). Can you restore jpeg2000 support to media-gfx/graphicsmagick?
Yeah, there's a bunch of things where we want to go around and restore Jasper support.
For now, until I get to to it in gm: EXTRA_ECONF="--with-jp2" emerge -v1 graphicsmagick should work, then can put it in /etc/portage/env if you want.