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Bug 646536 - sys-apps/kexec-tools: -mfunction-return=thunk and ‘-mcmodel=large’ are not compatible
Summary: sys-apps/kexec-tools: -mfunction-return=thunk and ‘-mcmodel=large’ are not co...
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo's Team for Core System packages
Depends on:
Reported: 2018-02-04 01:36 UTC by Andrius Štikonas
Modified: 2019-08-27 07:37 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description Andrius Štikonas 2018-02-04 01:36:22 UTC
kexec-tools-2.0.16 fails to compile here.

There was a similar fix for -mindirect-branch but it seems -mfunction-return was forgotten.

Reproducible: Always
Comment 1 François Thibault 2018-02-23 06:18:45 UTC
The thunk-inline version was made to work with '-mcmodel=large', so instead of filter-flags it could replace it with thunk-inline like this:

replace-flags -mfunction-return=thunk -mfunction-return=thunk-inline
replace-flags -mindirect-branch=thunk -mindirect-branch=thunk-inline

The only issue I see is that thunk-inline is slower than thunk.

At least it would be nice if the ebuilds did not filter thunk-inline (only thunk instead of thunk*) since that compiles.
Comment 2 Arfrever Frehtes Taifersar Arahesis 2019-08-27 07:37:32 UTC
Problem is hidden in >=sys-apps/kexec-tools-2.0.19 which just ignores user-specified CFLAGS during relevant part of building: bug #692930.