Bug 614324

Summary:	app-portage/cpuid2cpuflags: please print directly usable output
Product:	Gentoo Linux	Reporter:	Tomáš Mózes <hydrapolic>
Component:	Current packages	Assignee:	Michał Górny <mgorny>
Status:	RESOLVED WORKSFORME
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=613678
Whiteboard:
Package list:		Runtime testing required:	---

Description Tomáš Mózes 2017-03-31 05:48:42 UTC

The program used to print directly usable lines like:
CPU_FLAGS_X86="aes avx avx2 fma3 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3"

Now the output (version 2+) is:
CPU_FLAGS_X86: aes avx avx2 fma3 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3

If you want to automate your Gentoo installation, you'll probably send the output of cpuid2cpuflags to /etc/portage/make.conf, but now you actually cannot :(

Comment 1 Michał Górny archtester

2017-03-31 06:35:30 UTC

echo "*/* $(cpuid2cpuflags)" > /etc/portage/package.use/00cpu-flags

Comment 2 Tomáš Mózes 2017-03-31 10:30:54 UTC

Thanks, that seems like a good way. However, the new ebuild could print a warning about this change :)

Comment 3 Michał Górny archtester

2017-03-31 20:31:54 UTC

Yeah, documenting that makes sense.

Comment 4 Michael 'veremitz' Everitt 2017-03-31 21:34:40 UTC

See also: https://github.com/mgorny/cpuid2cpuflags/pull/5

Comment 5 Michał Górny archtester

2017-04-01 06:32:29 UTC

v4 includes a README + conditional postinst message.

Comment 6 Tomáš Mózes 2017-04-01 12:27:15 UTC

Thanks