Gentoo's Bugzilla –
Attachment 643200 Details for
Bug 726884media-libs/mesa-19.3.5 - ld: src/mesa/drivers/dri/r200/libr200.a(radeon_debug.c.o):(.bss+0x0): multiple definition of `radeon_enabled_debug_types'; src/mesa/drivers/dri/radeon/libr100.a(radeon_debug.c.o):(.bss+0x0): first defined here