Re: What happened to libtool transitive DSOs?
Tim Mooney <[email protected]>
| Newsgroups | gmane.comp.gnu.libtool.general |
|---|---|
| Message-ID | <[email protected]> |
In regard to: Re: What happened to libtool transitive DSOs?, Bob...: > On Thu, 21 Jun 2018, John Calcote wrote: > >> Hi Bob. It's an ubuntu distro release - Linux Mint 18. Why would they do >> that? > > GNU Linux and the GNU linker support implicit library dependencies. Sorry to jump into this discussion late, but I wanted to point out that at least RHEL seems to be moving away from using implicit library dependencies. In the RHEL 7.5 (current latest) release notes, chapter 53, on deprecated functionality: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.5_release_notes/chap-red_hat_enterprise_linux-7.5_release_notes-deprecated_functionality there's this note: Symbols from libraries linked as dependencies no longer resolved by ld Previously, the ld linker resolved any symbols present in any linked library, even if some libraries were linked only implicitly as dependencies of other libraries. This allowed developers to use symbols from the implicitly linked libraries in application code and omit explicitly specifying these libraries for linking. For security reasons, ld has been changed to not resolve references to symbols in libraries linked implicitly as dependencies. As a result, linking with ld fails when application code attempts to use symbols from libraries not declared for linking and linked only implicitly as dependencies. To use symbols from libraries linked as dependencies, developers must explicitly link against these libraries as well. To restore the previous behavior of ld, use the -copy-dt-needed-entries command-line option. (BZ#1292230) ----- end excerpt from RHEL release notes Tim -- Tim Mooney [email protected] Enterprise Computing & Infrastructure 701-231-1076 (Voice) Room 242-J6, Quentin Burdick Building 701-231-8541 (Fax) North Dakota State University, Fargo, ND 58105-5164 _______________________________________________ https://lists.gnu.org/mailman/listinfo/libtool