Bug 622782

Summary:	llvm.eclass: Provide support for matching clang/llvm slot
Product:	Gentoo Linux	Reporter:	Michał Górny <mgorny>
Component:	Eclasses	Assignee:	LLVM support project <llvm>
Status:	RESOLVED FIXED
Severity:	normal	CC:	tsmksubc
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://archives.gentoo.org/gentoo-dev/message/5d79fc274126d2278f72737b12c84a63
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=615754 https://bugs.gentoo.org/show_bug.cgi?id=919150
Whiteboard:
Package list:		Runtime testing required:	---

Description Michał Górny archtester

2017-06-26 21:20:05 UTC

As figured out in #615754, with slotted LLVM now it is possible to install a newer LLVM slot without matching clang version. This makes the logic used in the eclass fail. The package in question locates llvm-config for the newest supported LLVM version rather than the one having clang.

What I'm thinking of is adding:

  LLVM_NEED_COMPONENTS='clang'

which would cause the eclass to consider only LLVM versions with matching clang version. For detection, we can check if $prefix/bin/clang exists.

Comment 1 Michał Górny archtester

2017-09-03 07:47:08 UTC

This is now solved by llvm_check_deps().