On Sun, Dec 09, 2007 at 11:31:19PM +0100, Romain Beauxis wrote: > Le Sunday 09 December 2007 22:45:46 Nikita V. Youshchenko, vous avez écrit : > > > However, most of the applications don't need to link against theora and > > > speex.
> > Doesn't libshout reference symbols from libspeex and libtheora? > Yes > > If it does, resulting binary must be linked against both these libraries. > > Unresolved symbols within binaries are really bad, because they will once > > be unexpectedly called (e.g. in some init or deinit or error-handling), and > > binary will crash, leaving user data unsaved. > I think you are confusing the issue. > Yes, libshout uses symbols from libspeex: > objdump -x /usr/lib/libshout.so | grep NEEDED | grep speex > NEEDED libspeex.so.1 > However, not all applications uses those symbols in their current code, so > they do not need to be linked against speex themselves. And therefore, the scripts generating dependency information for dynamically linking to libshout should *not* list libspeex or libtheora, and consequently there's no need for -Wl,--as-needed. (When statically linking, -Wl,--as-needed is also irrelevant, because unused symbols from static libs are already discarded.) > Of course, correct dependencies will be pulled when requesting libshout. No, currently the dependencies pulled in are overbroad. Please fix /usr/lib/pkgconfig/shout.pc to list the dependent libraries in "Requires.private", not in "Requires". -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer http://www.debian.org/ [EMAIL PROTECTED] [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
