New comment by pullmoll on void-packages repository https://github.com/void-linux/void-packages/issues/28076#issuecomment-764618038 Comment: It worked with 10.2.0 so the alpine gcc 10.2.1pre1 has a change which breaks linking because `-lucontext` is missing in the linker flags. A diff between 10.2.0 and 10.2.1pre1 should help. I'll take a look now.