On Tue, Jul 13, 2004 at 10:39:00AM -0700, Ian Romanick wrote: > Yeah, there's a lot of stuff in the Redhat RPMs that aren't in my patch > yet. I'm trying to take things in small steps to make it easier to find > binary compatability problems as they crop up. The other part of the > problem is that I don't fully understand a lot of this stuff. I haven't > gotten down to this level of linker magic in a long, long time. Can you > recommend any good reading material on the subject?
http://people.redhat.com/drepper/dsohowto.pdf http://people.redhat.com/drepper/tls.pdf http://people.redhat.com/jakub/prelink.pdf http://www.gzlinux.org/docs/category/dev/c/linkerandloader.pdf http://www.caldera.com/developers/devspecs/gabi41.pdf http://www.caldera.com/developers/devspecs/abi386-4.pdf http://docs.sun.com/db/doc/816-1386 http://people.redhat.com/drepper/symbol-versioning > >If you build e.g. libGL.so.1 with a requirement for kernel 2.4.20 or later, > >and use LD_ASSUME_KERNEL=2.4.19 in the environment, the dynamic linker will > >skip this shared library and continue searching for another libGL.so.1. > >See http://people.redhat.com/drepper/assumekernel.html for details. > > About 15 people sent me e-mail with that link. :) The one thing I > didn't see was how to put that note in a library. Is there some special > section attributes in the source or is there some linker magic? Assemble and link in: .section ".note.ABI-tag", "a" .p2align 2 .long 1f - 0f /* name length */ .long 3f - 2f /* data length */ .long 1 /* note type */ 0: .asciz "GNU" /* vendor name */ 1: .p2align 2 2: .long 0 /* note data: the ABI tag */ .long 2,4,20 /* Or whatever other kernel version you wish */ 3: .p2align 2 /* pad out section */ Jakub ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com -- _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
