Date: Sat, 15 Apr 2006 20:45:11 +0200 From: Victor Balada Diaz <victor@bsdes.net> To: "M. Warner Losh" <imp@bsdimp.com> Cc: deischen@freebsd.org, hackers@freebsd.org Subject: Re: Missing dependencies on shared libraries Message-ID: <20060415184511.GA697@pato.euesrg02.net> In-Reply-To: <20060415.122657.111699385.imp@bsdimp.com> References: <Pine.GSO.4.64.0604151358210.9220@sea.ntplx.net> <20060415.120640.28764842.imp@bsdimp.com> <Pine.GSO.4.64.0604151411140.9269@sea.ntplx.net> <20060415.122657.111699385.imp@bsdimp.com>
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On Sat, Apr 15, 2006 at 12:26:57PM -0600, M. Warner Losh wrote: > In message: <Pine.GSO.4.64.0604151411140.9269@sea.ntplx.net> > Daniel Eischen <deischen@freebsd.org> writes: > : On Sat, 15 Apr 2006, M. Warner Losh wrote: > : > : > In message: <Pine.GSO.4.64.0604151358210.9220@sea.ntplx.net> > : > Daniel Eischen <deischen@freebsd.org> writes: > : > : On Sat, 15 Apr 2006, M. Warner Losh wrote: > : > : > : > : > In message: <Pine.GSO.4.64.0604141439280.3685@sea.ntplx.net> > : > : > Daniel Eischen <deischen@freebsd.org> writes: > : > : > : On Fri, 14 Apr 2006, Victor Balada Diaz wrote: > : > : > : > : > : > : > Hi, > : > : > : > I found that ldd doesn't report libc as a dependency on most (all?) > : > : > : > libraries: > : > : > : > > : > : > : > pato> ldd /usr/lib/libfetch.so > : > : > : > /usr/lib/libfetch.so: > : > : > : > libssl.so.3 => /usr/lib/libssl.so.3 (0x4816a000) > : > : > : > libcrypto.so.3 => /lib/libcrypto.so.3 (0x48198000) > : > : > : > > : > : > : > does anyone know why? > : > : > : > : > : > : AFAIK, it's being worked on. It's not just libc either, -pthread > : > : > : also has to start linking to libpthread. > : > : > > : > : > We don't record libc dependencies into shared libraries right now. If > : > : > we did, that would create some problems and solve some problems. With > : > : > symbol versioning, it most likely will become moot, since we'll never > : > : > have to bump libc major version again... > : > : > : > : kan stated he was working on doing this, which is what I was > : > : referring to above. > : > > : > That makes sense. If you explicitly include libc on the command line > : > to build the library, it is included... > : > : Here's the link to his original reply to -current. Also, if you > : look at linux shared libraries, you'll note they have dependencies > : to libc. > > I guess what I'm saying is that on FreeBSD, the system built shared > libraries don't have libc recorded in them because we don't add -lc on > the commnad line to build them. If i try to add -lc ldd doesn't show it as a dependency, but readelf/dumpelf does show it as NEEDED. Is this the expected behavior? Why isn't ldd showing the dependency? -- La prueba mas fehaciente de que existe vida inteligente en otros planetas, es que no han intentado contactar con nosotros.
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