Re: [yocto-patches] [meta-selinux][PATCH]] libsepol: disable LTO to fix buildpaths QA failure

Thomas Perrot <[email protected]> Mon, 20 Apr 2026 11:30:42 +0200

Newsgroups	org.yoctoproject.lists.yocto-patches
Message-ID	<[email protected]>

Hello Yi,

On Thu, 2026-04-02 at 16:31 +0800, Yi Zhao wrote:
> Hi Thomas,
> 
> 
> Could you please provide the build steps to reproduce this QA
> failure? 

To reproduce it, LTO is required to be enabled. For example:

DISTRO_FEATURES:append = " lto"
require conf/distro/include/lto.inc

Kind regards,
Thomas

> I 
> can not reproduce the issue, even without applying this patch.
> 
> 
> Thanks,
> 
> Yi
> 
> On 3/28/26 23:58, Thomas Perrot via lists.yoctoproject.org wrote:
> > From: Thomas Perrot <[email protected]>
> > 
> > Fat LTO objects in the static library embed original source paths
> > in
> > .gnu.lto_* IR sections. Unlike DWARF output, these sections are not
> > affected by -ffile-prefix-map, causing TMPDIR references to survive
> > into the installed libsepol-staticdev package.
> > 
> > Signed-off-by: Thomas Perrot <[email protected]>
> > ---
> >   recipes-security/selinux/libsepol_3.10.bb | 4 ++++
> >   1 file changed, 4 insertions(+)
> > 
> > diff --git a/recipes-security/selinux/libsepol_3.10.bb b/recipes-
> > security/selinux/libsepol_3.10.bb
> > index 0423a2a6ea31..0a51aba28ee8 100644
> > --- a/recipes-security/selinux/libsepol_3.10.bb
> > +++ b/recipes-security/selinux/libsepol_3.10.bb
> > @@ -13,4 +13,8 @@ inherit lib_package
> >   
> >   DEPENDS = "flex-native"
> >   
> > +# LTO fat objects in static library embed original source paths in
> > .gnu.lto_* IR
> > +# sections which are not affected by -ffile-prefix-map, causing
> > buildpaths QA failure
> > +LTO = ""
> > +
> >   BBCLASSEXTEND = "native"

-- 
Thomas Perrot, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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