Bug 658476 – sys-devel/llvm-5.0.2 is not build on new system with -mtune=generic

• Status: RESOLVED INVALID
• Product: Gentoo Linux

[Description Michail Shurutov 2018-06-19 11:11:13 UTC]

Created attachment 536322 [details]
build log from var/tmp/portage/sys-devel/llvm-5.0.2/temp/

I cannot build llvm on new system (HP EliteBook 840 G5).
build.log is too attached.

[Comment 1 Michail Shurutov 2018-06-19 11:12:08 UTC]

Created attachment 536324 [details]
Environment of build process

[Comment 2 Michail Shurutov 2018-06-19 11:13:07 UTC]

Created attachment 536326 [details]
Out of `emerge --info '=sys-devel/llvm-5.0.2'`

[Comment 3 Michail Shurutov 2018-06-19 11:49:06 UTC]

I need -mtune=generic because I have AMD FX-8320E on my desktop and Intel processors on my laptops and I want to use distcc for build any products, as libreoffice, mozilla firefox etc.

[Comment 4 Jonas Stein 2018-06-21 18:01:30 UTC]

in order to locate the source of trouble: Can you compile without -mtune=generic?

[Comment 5 Michał Górny 2018-06-21 20:58:40 UTC]

My first guess is that you've run out of memory.  Please check 'dmesg' for any indications of OOM-killer activity.

[Comment 6 Michail Shurutov 2018-06-22 03:40:11 UTC]

Thanks for answers guys.
Jonas, disabling "-mtune=generic" was not affected. Building llvm was crashed.
Michał Górny, my guess was similar, but I didn't see dmesg.
I'm attached file llvm.lowmem with out of dmesg and free command

[Comment 7 Michail Shurutov 2018-06-22 03:41:01 UTC]

Created attachment 536758 [details]
out of dmesg and free command

[Comment 8 Michał Górny 2018-06-22 06:50:46 UTC]

> [119386.716316] lowmemorykiller: send sigkill to 8525 (cc1plus), adj 0, size 113604

Looks like it is indeed the case.  -j9 is definitely too many for 3G of memory.  I manage to build LLVM with -j5 on 4G of mem, and that's at the edge of OOM (and some swap).