Date: Wed, 30 Oct 2002 15:51:48 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: Doug Rabson <dfr@nlsystems.com> Cc: Daniel Eischen <eischen@pcnet1.pcnet.com>, current@freebsd.org Subject: Re: [PATCH: libc]Re: gnome on current Message-ID: <3DC07094.F67F5C66@mindspring.com> References: <20021030234026.M22480-100000@herring.nlsystems.com>
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Doug Rabson wrote: > > > For what its worth, doing this (defining strong pthread_* symbols in > > > libc_r) makes everything work fine, with or without libXThrStub. > > > > No, this would be bad. There's some justification for not > > doing this, in allowing programs linked againts libraries linked > > against threaded libraries to link against alternate threads > > libraries. If the symbols are stong, then this is not possible. > > Wrong. Either link the app to libc_r or to libpthread or to > libmyOwnThreads. NO. If you have a library that's linked to a library containing string symbols, then no other library gets a chance to replace to symbols with its own strong symbols. The first strong symbol always wins, and the search is defined to be depth-first. > > Maybe the workaround for now is to make the symbols in libXThrStub.so > > weak? > > They *are* weak Terry. The problem is that every bloody definition is weak > so the linker has no way of picking the one definition which will actually > work. The real problem is that the actual working threads library doesn't > provide strong symbols to allow it to override all the other stubs. First strong/last weak should win. You are saying "last weak" is not winning. That's a linker bug. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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