Date: Fri, 08 Feb 2002 16:50:57 +0200 From: Maxim Sobolev <sobomax@FreeBSD.org> To: Ruslan Ermilov <ru@FreeBSD.org> Cc: Terry Lambert <tlambert2@mindspring.com>, Jason Evans <jasone@canonware.com>, jdp@FreeBSD.org, deischen@FreeBSD.org, jasone@FreeBSD.org, hackers@FreeBSD.org, jlemon@FreeBSD.org Subject: Re: Linking libc before libc_r into application causes weird problems Message-ID: <3C63E5D1.1E423698@FreeBSD.org> References: <1013147180.73417.2.camel@notebook> <20020207234233.D23162@canonware.com> <3C639A8C.6D100326@FreeBSD.org> <3C63A62D.3E4A4FC4@mindspring.com> <3C63AD02.79BA5AF5@FreeBSD.org> <20020208164132.D78163@sunbay.com>
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Ruslan Ermilov wrote: > > On Fri, Feb 08, 2002 at 12:48:34PM +0200, Maxim Sobolev wrote: > > Terry Lambert wrote: > > > > > > Maxim Sobolev wrote: > > > > That would be nice, but we have a real problem at hand. As I said, I > > > > think that ld(1) should be smart enough to reorder libc/libc_r so that > > > > libc_r is always linked before libc. This is clearly not the case > > > > right now. Unfortunately there is no easy way to reproduce this, but > > > > if you have some spare CPU cycles try to remore explicit -pthread from > > > > ports/mail/evolution/Makefile, build the port on -current and do `ldd > > > > /usr/X11R6/bin/evolution'. You will see that libc.so.X precedes > > > > libc_r.so.X, even though -lc wasn't supplied to a linker, while -lc_r > > > > was. > > > > When you say ld(1), are you perhaps mean rtld-elf.so.1 (aka rtld(1))? > ld(1) only _links_ when static linkage was requested (which is not the > case here), or writes dynamic dependencies on shared objects. No, I meant ld(1). The problem here is that in the case when libc is recorded before libc_r in dynamic dependencies list the resulting executable may not work correctly (see my testcase). -Maxim To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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