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RIA77
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PostPosted: Wed Dec 11, 2024 6:43 pm    Post subject: Clang profile, two llvm versions Reply with quote

Can I remove one LLVM ?
I have llvm 18 and 19.
I have been using stable Gentoo.

Code:
alculating dependencies... done!
  media-libs/mesa-24.2.6-r2 pulled in by:
    x11-base/xorg-server-21.1.14 requires >=media-libs/mesa-18[X(+),egl(+),gbm(+)]
    x11-drivers/xf86-video-ati-22.0.0 requires media-libs/mesa


Can I remove 18 ?
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Hu
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PostPosted: Wed Dec 11, 2024 7:21 pm    Post subject: Reply with quote

Try it and see. What is the output of emerge --ask --verbose --depclean sys-devel/llvm?
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RIA77
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PostPosted: Wed Dec 11, 2024 8:03 pm    Post subject: Reply with quote

Code:
  sys-devel/llvm-18.1.8-r1 pulled in by:
    @system requires sys-devel/llvm
    media-libs/mesa-24.2.6-r2 requires sys-devel/llvm:18[llvm_targets_AMDGPU(+),abi_x86_64(-)]
    sys-devel/llvm-toolchain-symlinks-18-r1 requires sys-devel/llvm:18

  sys-devel/llvm-19.1.4 pulled in by:
    @system requires sys-devel/llvm
    sys-devel/clang-19.1.4 requires ~sys-devel/llvm-19.1.4:19/19.1=[-debug,abi_x86_64(-)], ~sys-devel/llvm-19.1.4[llvm_targets_Lanai], ~sys-devel/llvm-19.1.4[llvm_targets_Sparc], ~sys-devel/llvm-19.1.4[llvm_targets_BPF], ~sys-devel/llvm-19.1.4[llvm_targets_AArch64], ~sys-devel/llvm-19.1.4[llvm_targets_X86], ~sys-devel/llvm-19.1.4[llvm_targets_MSP430], ~sys-devel/llvm-19.1.4[llvm_targets_AVR], ~sys-devel/llvm-19.1.4[llvm_targets_PowerPC], ~sys-devel/llvm-19.1.4[llvm_targets_ARM], ~sys-devel/llvm-19.1.4:19=[-debug,abi_x86_64(-)], ~sys-devel/llvm-19.1.4[llvm_targets_SystemZ], ~sys-devel/llvm-19.1.4[llvm_targets_NVPTX], ~sys-devel/llvm-19.1.4[llvm_targets_VE], ~sys-devel/llvm-19.1.4[llvm_targets_Hexagon], ~sys-devel/llvm-19.1.4[llvm_targets_RISCV], ~sys-devel/llvm-19.1.4[llvm_targets_LoongArch], ~sys-devel/llvm-19.1.4[llvm_targets_XCore], ~sys-devel/llvm-19.1.4[llvm_targets_WebAssembly], ~sys-devel/llvm-19.1.4[llvm_targets_AMDGPU], ~sys-devel/llvm-19.1.4[llvm_targets_Mips]
    sys-devel/lld-19.1.4 requires ~sys-devel/llvm-19.1.4[-debug,-zstd], sys-devel/llvm:19
    sys-devel/llvm-toolchain-symlinks-19 requires sys-devel/llvm:19
    sys-libs/compiler-rt-19.1.4 requires sys-devel/llvm:19
    sys-libs/libcxx-19.1.4 requires sys-devel/llvm:19
    sys-libs/libcxxabi-19.1.4 requires sys-devel/llvm:19
    sys-libs/llvm-libunwind-19.1.4 requires sys-devel/llvm:19
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GDH-gentoo
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PostPosted: Wed Dec 11, 2024 8:50 pm    Post subject: Reply with quote

RIA77 wrote:
Can I remove 18 ?

No. Mesa specifically needs 18, at least for now:

RIA77 wrote:
Code:
media-libs/mesa-24.2.6-r2 requires sys-devel/llvm:18[llvm_targets_AMDGPU(+),abi_x86_64(-)]

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logrusx
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PostPosted: Wed Dec 11, 2024 9:13 pm    Post subject: Re: Clang profile, two llvm versions Reply with quote

RIA77 wrote:

Can I remove 18 ?


If emerge --depclean does not want to clean it, something holds on to it. GDH-Gentoo has already given you the answer to what it is.

You don't need to remove it, it won't do much for you. It won't even free significant amount of space and it doesn't run by itself, so you don't have a good reason to want to remove it until emerge --depclean decides so.

Best Regards,
Georgi
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dmpogo
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PostPosted: Thu Dec 12, 2024 12:09 am    Post subject: Re: Clang profile, two llvm versions Reply with quote

logrusx wrote:
RIA77 wrote:

Can I remove 18 ?


If emerge --depclean does not want to clean it, something holds on to it. GDH-Gentoo has already given you the answer to what it is.

You don't need to remove it, it won't do much for you. It won't even free significant amount of space and it doesn't run by itself, so you don't have a good reason to want to remove it until emerge --depclean decides so.

Best Regards,
Georgi


But then you may be recompiling the version you do not use if it is updated, and clang with llvm is a non-trivial compilation. Recent introduction of 19 and update of 18 took my laptop few hours to deal with.
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dmpogo
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PostPosted: Thu Dec 12, 2024 12:15 am    Post subject: Reply with quote

GDH-gentoo wrote:
RIA77 wrote:
Can I remove 18 ?

No. Mesa specifically needs 18, at least for now:

RIA77 wrote:
Code:
media-libs/mesa-24.2.6-r2 requires sys-devel/llvm:18[llvm_targets_AMDGPU(+),abi_x86_64(-)]



Also qttools it seems. Actually nothing needs 19 version :)
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bstaletic
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PostPosted: Thu Dec 12, 2024 1:04 am    Post subject: Reply with quote

media-libs/mesa (and intel_clc) works find with LLVM_SLOT=19. It's just the ebuids that are missing an update.
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logrusx
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PostPosted: Thu Dec 12, 2024 4:50 am    Post subject: Reply with quote

bstaletic wrote:
media-libs/mesa (and intel_clc) works find with LLVM_SLOT=19. It's just the ebuids that are missing an update.

If you're sure about that, file a bug.

Best Regards,
Georgi
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bstaletic
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PostPosted: Thu Dec 12, 2024 8:32 am    Post subject: Reply with quote

I should have been more careful with my wording, but in my defense, it was almost 03:00 and I should have been asleep.

I've ran the tests with LLVM_SLOT=19 set on libclc, intel_clc and mesa. All tests pass, but I only have VIDEO_CARDS=intel, so I don't know if my testing is enough for the bug report.
I've been running with only llvm:19 on my system for a few months now.
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logrusx
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PostPosted: Thu Dec 12, 2024 9:00 am    Post subject: Reply with quote

Look at the stabilization bugs. Your input might still be useful.

Best Regards,
Georgi
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RIA77
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PostPosted: Thu Dec 12, 2024 6:28 pm    Post subject: Reply with quote

Can I force rebuild of mesa with llvm 18 and not 19 ?
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Hu
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PostPosted: Thu Dec 12, 2024 6:45 pm    Post subject: Reply with quote

As I understand it, Mesa is already using LLVM 18, so there is nothing to force. There was discussion here of whether LLVM 19 would be viable for Mesa.
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RIA77
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PostPosted: Thu Dec 12, 2024 7:31 pm    Post subject: Reply with quote

Yes, sorry.
Force rebuild with llvm 19 and remove llvm 18.
Or rebuild whole world with 18 and remove 19 ?
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GDH-gentoo
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PostPosted: Thu Dec 12, 2024 8:11 pm    Post subject: Reply with quote

Unless you want to create a maintenance problem, leave both versions alone.

LLVM 18 is needed for Mesa. Some of its components link to this version's libraries, so you can't get rid of it for now.

And you'll have LLVM 19 because you are on an LLVM profile, 19 is the latest stable, and Gentoo is rolling release.
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