On Wed, Oct 13 2021 at 06:06:50 PM +0200, Björn 'besser82' Esser
<besser82@xxxxxxxxxxxxxxxxx> wrote:
What you describe as lto requires a lot of memory is caused by
building
lto along with non-lto in the same object file requires significantly
more memory. For that reason one can disable building non-lto along
with lto using the `-f-no-fat-lto-objects` compiler flags instead of
`-f-fat-lto-objects`, if and *only IF* the package in question does
*NOT* ship static libraries.
More background: this default is, of course, backwards. Fedora packages
do not generally ship static libraries, so it makes more sense for the
few packages that do to opt-in instead of opt-out. Jeff proposed a
change to improve that here:
https://fedoraproject.org/wiki/Changes/LTOBuildImprovements
but he left Red Hat, so it hasn't been implemented.
Michael
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