K 10
svn:author
V 6
jbeich
K 8
svn:date
V 27
2020-06-01T23:25:43.414853Z
K 7
svn:log
V 407
graphics/mesa-devel: allow users to disable drivers

- DragonFly cannot use anv without futex (Linux, OpenBSD) or _umtx_op (FreeBSD)
- DragonFly doesn't install libelf from ELF Tool Chain
- powerpc64 cannot use LIBUNWIND as it yet to be ported
- powerpc64 on FreeBSD < 13 cannot use -fuse-ld=lld
- anv, i965, iris only support Intel GPUs on x86
- anv, i965, iris work fine without LLVM support

PR:		246913

END