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Rutcha
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Joined: 13 Dec 2019
Posts: 7
Location: Brasil, Latin America

PostPosted: Sun Jan 09, 2022 12:33 pm    Post subject: 'Ebuild variable' vanishes during normal portage emerge Reply with quote

I'm trying to use 'ebuild Variables' in my make.conf, like ${PN} for package name or ${PF} package full name so that I cant set a PGO (profile guided optimization) directory.
More or less CFLAGS="-fprofile-dir=/var/tmp/pgo/${PN}".

But what I get is a blank, nothing for that variable as if it didn't exist at all. Am I using it in the right place ?
My other solution is to write an script and make custom entries for every single package inside /etc/portage/env/...
So as to avoid this big work, I believe these 'ebuild variables' were made for.

For those not totally aware of PGO, PGO needs a folder for each package to store profiling data. Thanks, all ladies and gentlemen!
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alamahant
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Joined: 23 Mar 2019
Posts: 2477

PostPosted: Sun Jan 09, 2022 3:23 pm    Post subject: Reply with quote

Is
Code:

/var/tmp/pgo/${PN

a file?
Can you post a sample?
Does it contain
Code:

CFLAGS="..............."

I am not sure if portage sources make.conf with every package or just once.
If the former would not
Code:

.  /var/tmp/pgo/${PN}

would work?
Or maybe
Code:

CFLAGS="........."
PGOFLAGS=$(cat  /var/tmp/pgo/${PN})
CFLAGS="${CFLAGS} ${PGOFLAGS}"

Just a wild guess.....
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grknight
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Joined: 20 Feb 2015
Posts: 362

PostPosted: Sun Jan 09, 2022 4:22 pm    Post subject: Re: 'Ebuild variable' vanishes during normal portage emerge Reply with quote

Rutcha wrote:
I'm trying to use 'ebuild Variables' in my make.conf, like ${PN} for package name or ${PF} package full name so that I cant set a PGO (profile guided optimization) directory.
More or less CFLAGS="-fprofile-dir=/var/tmp/pgo/${PN}".

But what I get is a blank, nothing for that variable as if it didn't exist at all. Am I using it in the right place ?
My other solution is to write an script and make custom entries for every single package inside /etc/portage/env/...
So as to avoid this big work, I believe these 'ebuild variables' were made for.

For those not totally aware of PGO, PGO needs a folder for each package to store profiling data. Thanks, all ladies and gentlemen!


AFAIK, ebuild variables are not available in make.conf as make.conf is read before ebuilds variables are defined.

In addition, it is not valid for a build to write outside of $WORKDIR or $T as it will likely be denied by the sandbox.
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Genone
Retired Dev
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Joined: 14 Mar 2003
Posts: 9270
Location: beyond the rim

PostPosted: Tue Jan 11, 2022 11:43 am    Post subject: Re: 'Ebuild variable' vanishes during normal portage emerge Reply with quote

Rutcha wrote:
I'm trying to use 'ebuild Variables' in my make.conf, like ${PN} for package name or ${PF} package full name so that I cant set a PGO (profile guided optimization) directory.
More or less CFLAGS="-fprofile-dir=/var/tmp/pgo/${PN}".

But what I get is a blank, nothing for that variable as if it didn't exist at all. Am I using it in the right place ?

Nope, ebuild variables, as the name implies, can only be used inside ebuild contexts (ebuilds, eclasses, scripts used within ebuilds, ...). They are not defined when make.conf or other global configuration files are processed.
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