* [gentoo-dev] How to handle ROC forks of llvm and clang
@ 2018-12-14 20:00 99% Craig Andrews
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From: Craig Andrews @ 2018-12-14 20:00 UTC (permalink / raw
To: llvm, gentoo-dev; +Cc: gienah, gentoo
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I'm working on packaging the Radeon Open Compute (ROC) packages for
Gentoo with first goal being to get the OpenCL runtime working.
The OpenCL runtime can be found at:
https://github.com/RadeonOpenCompute/ROCm-OpenCL-Runtime
It has a mess of dependencies; I can handle most of them (not that it'll
be easy, but at least I know what to do). The 3 troublemakers I'd like
to discuss are the ROC forks of:
llvm: https://github.com/RadeonOpenCompute/llvm/
clang: https://github.com/RadeonOpenCompute/clang/
ldd: https://github.com/RadeonOpenCompute/ldd/
Potential approaches include:
1) Create new packages for each: sys-devel/radeon-open-compute-llvm,
sys-devel/radeon-open-compute-clang, sys-devel/radeon-open-compute-lld
2) Add use flags to existing packages that apply the ROC changes as a
patch
3) Add use flags to existing packages that use ROC archives as the
SRC_URIs
4) Take the approach justxi did in his overlay which is to bundle these
dependencies wherever they're needed; for example, take a look at
https://github.com/justxi/rocm/blob/master/media-libs/ROCm-OpenCL-Runtime/ROCm-OpenCL-Runtime-1.7.0-r3.ebuild
Personally, I dislike (4), as it's contrary to the bundling policy that
Gentoo tries to follow.
For (2), I'm concerned that generating and maintaining that patch may be
really annoying and a lot of work.
For (3), it's not great to have different base archives.
Since ROC will eventually upstream all of it's work, (2) is ideal - but
I have no idea what the timeline on that upstreaming effort may be, and
I can't find anything that gives a hint.
What is the best way forward? And what would be acceptable to the Gentoo
LLVM project?
Thanks,
~Craig
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