Date: Mon, 11 Apr 2005 00:43:25 +0200 From: Michael Nottebrock <michaelnottebrock@gmx.net> To: freebsd-ports@freebsd.org Cc: "Alexander S. Usov" <A.S.Usov@kvi.nl> Subject: Re: Using -as-needed in KDE Message-ID: <200504110043.30666.michaelnottebrock@gmx.net> In-Reply-To: <d3c7sp$q5r$1@sea.gmane.org> References: <d3c7sp$q5r$1@sea.gmane.org>
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--nextPart1149144.NDShI6nofN Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Monday, 11. April 2005 00:06, Alexander S. Usov wrote: > Hi! > > Recently I found somewhat strange patch to Mk/bsd.kde.mk : > > Revision 1.47 > Globally disable -Wl,-as-needed for all users of USE_KDELIBS_VER. > Binaries linked with -pthread and -Wl,as-needed will have all > references to libphthread stripped (reason/reasoning unknown), > causing funny runtime errors when Qt decides to fire up a thread. > > Which I find somewhat strange, as I believe that there were reports > of a quite measurable increase in start-up time for KDE applications > due to the use of "-as-needed" linking flag. Exaggerated. > As far as I can see there are at least two ways to work around the > issue described above. > > The brute-force and dirty solution is to add something like > "-noas-needed -lptread -as-needed" to LDFLAGS. No, that doesn't work. > In a more cleaner way, as it is libqt-mt who needs threading in the > first place, why not link it against libpthread? Because we don't do that in FreeBSD, see below. > Additionally this=20 > should solve the problems with qtk-qt-engine, which fails to load > now for non-threaded applications. And it would cause other problems elsewhere, which is why the decision was= =20 made during the development of 5-CURRENT to globally go with -pthread and=20 resolve pthread symbols not through libraries but through executables only. You can work around the problems with gtk-qt-engine by running the affected= =20 programs with something like env LD_PRELOAD=3D/usr/lib/libpthread.so.1=20 <program>. =2D-=20 ,_, | Michael Nottebrock | lofi@freebsd.org (/^ ^\) | FreeBSD - The Power to Serve | http://www.freebsd.org \u/ | K Desktop Environment on FreeBSD | http://freebsd.kde.org --nextPart1149144.NDShI6nofN Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQBCWawSXhc68WspdLARAmi5AJ47y0v/wd20pGqqHK4RCtnf3ZrqfQCgoabB 4g+5H8XYopwlE2sfdTdiFS4= =JqcO -----END PGP SIGNATURE----- --nextPart1149144.NDShI6nofN--
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