[CFT] Mesa 18.2.0 update (mesa-libs, mesa-dri, libosmesa, clover)

[Jan Beich]

Samy Mahmoudi <samy.mahmoudi at gmail.com> writes:

> checking for gcc... gcc7
[...]
> configure: error: --enable-llvm is required when building r300

I've filed https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231329 for you
but no one tests GCC on amd64/i386 nowadays unless it's a strict dependency.

graphics/mesa-dri/Makefile.common:
  # need LLVM for libEGL wherever possible, but mixing GCC and LLVM breaks Gallium
  .if ${CHOSEN_COMPILER_TYPE} == clang \
   || (${COMPONENT} == libs && ${ARCH} != sparc64)	# no working LLVM
  MESA_LLVM_VER?=	60
  .endif
  [...]
  .if "${MESA_LLVM_VER}" != ""
  [...]
  CONFIGURE_ARGS+=	--enable-llvm
  .else
  CONFIGURE_ARGS+=	--disable-llvm
  .endif