On Monday 10 February 2025 19:07:07 Greenwich Mean Time Matthias Hanft wrote:
> Hi,
> 
> I have many Firebird databases on my Gentoo server.
> 
> To compile PHP with Firebird support, I have the line
> 
> -firebird
> 
> in /etc/portage/profile/use.mask because the Firebird USE flag
> of PHP was masked somewhen.
> 
> This worked without problems as long as Firebird (3.0) was in
> the portage tree.
> 
> Now Firebird was completely removed from the portage tree.
> So I installed Firebird (5.0) from its own homepage which
> works without problems, too. I put the line
> 
> dev-db/firebird-5.0.1.1469
> 
> into /etc/portage/profile/package.provided. Not sure if this
> was necessary, but apparently it doesn't harm...
> 
> ...maybe except one point: Since then, revdep-rebuild always
> reinstalls PHP (although it doesn't show any orphaned files).
> 
> The other/old revdep-rebuild.sh says, however,
> "Dynamic linking on your system is consistent... All done."
> 
> I'd like to get the normal revdep-rebuild saying "everything
> ok", too. So what's the correct way to deal with a manually
> installed Firebird server while keeping the Firebird support
> in PHP and not interfering with revdep-rebuild?
> 
> Thanks,
> 
> -Matt

According to http://gpo.zugaina.org/ firebird is provided by bgo-overlay.  I 
don't know if this overlay is checked by gentoo devs for the quality of its 
contents or not, but you could take a look.  Using an overlay will allow your 
system to know what files were installed by emerge.  I expect your 'revdep-
rebuild' behaviour will correct itself thereafter.

If the above overlay is not good, then you can create your own local overlay 
for this purpose.