There are 4 packages with the USE flag boehm-gc: dev-embedded/sdcc gnustep-base/libobjc2 media-gfx/asymptote net-libs/onion
plus 3 packages with the USE flag gc having the same meaning: sci-mathematics/flint sys-apps/nix www-client/elinksI think it would be reasonable to rename the flag gc to boehm-gc in these 3 packages, and make boehm-gc global. The description can be something like
Enable garbage collection using dev-libs/boehm-gc Andrey
