On Mon, Nov 15, 2010 at 21:29:07 -0500, Matt Turner wrote: > On Mon, Nov 15, 2010 at 8:15 PM, Samuel Thibault <sthibault@debian.org> wrote: > > Matt Turner, le Mon 15 Nov 2010 19:51:10 -0500, a écrit : > >> On Mon, Nov 15, 2010 at 7:24 PM, Roger Leigh <rleigh@codelibre.net> wrote: > >> > What's the actual problem --as-needed is trying to solve? > >> > > >> > The answer is mainly unwanted libraries being linked in as a result > >> > of using pkg-config (and various other -config variants), though there > >> > are other, lesser, culprits. The pkg-config .pc files for gtk, gnome > >> > and other libraries add in many libraries, most of which aren't > >> > typically needed. > >> > > >> > The solution: fix the .pc files! > >> > > >> > Using --as-needed is merely papering over the actual root problem. > >> > It "fixes" the symptoms, but it's not addressing the actual cause. > >> > The number of packages providing broken .pc files is not large, and > >> > the number breaking due to relying on this brokenness is likely > >> > just as small. > >> > >> I can't see why you think --as-needed is fundamentally wrong or unnecessary. > >> > >> Check out http://www.gentoo.org/proj/en/qa/asneeded.xml > >> > >> --as-needed has saved tons of time for upgrades like Cairo in Gentoo, > >> where Cairo had been linked to glitz which is now useless and gone. > > > > Not a problem, if Cairo was properly exposing the dep. > > > >> So > >> when people upgraded Cairo, all the software that linked against it > >> (and also unnecessarily linked against glitz) > > > > Why did it get linked against glitz? That's where the problem is. > > I think because -lglitz was in cairo's .pc file. > That should be fixed by removing -lglitz from cairo's .pc file, not by passing --as-needed to the linker. Cheers, Julien
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