Library mapping question
Hi all I have same name libraries in two different locations, eg. /usr/lib/libXXX.so and /usr/local/lib/libXXX.so. They were created using same sources and the same compiler. The app1 is linked with /usr/lib/libXXX.so and app2 is linked with /usr/local/lib/libXXX.so. When app2 is run, the dynamic linker (ld-elf.so.1) finds /usr/lib/libXXX.so first and ends up with following error: undefined reference to `_myxxx' This is not an issue with Linux's dynamic linker but it seems FreeBSD's function look up is very specific. I cannot change the dynamic linker's search path, then app1 fails. How do I get the app2 to refer to /usr/local/lib/libXXX.so? In FreeBSD, is there a way to instruct the dynamic linker (ld-elf.so.1) to continue to search for the same library name in different locations? What are the other possible options? Appreciate your reply. Kind regards Unga ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Library mapping question
Hi. On Fri, 11 Jul 2008 01:22:21 -0700 (PDT), Unga [EMAIL PROTECTED] wrote: How do I get the app2 to refer to /usr/local/lib/libXXX.so? In FreeBSD, is there a way to instruct the dynamic linker (ld-elf.so.1) to continue to search for the same library name in different locations? Maybe an entry in /etc/libmap.conf (man 5 libmap.conf) will reveal a possible solution? -- Polytropon From Magdeburg, Germany Happy FreeBSD user since 4.0 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Library mapping question
--- On Fri, 7/11/08, Polytropon [EMAIL PROTECTED] wrote: From: Polytropon [EMAIL PROTECTED] Subject: Re: Library mapping question To: freebsd-questions@freebsd.org Cc: [EMAIL PROTECTED] Date: Friday, July 11, 2008, 5:09 PM Hi. On Fri, 11 Jul 2008 01:22:21 -0700 (PDT), Unga [EMAIL PROTECTED] wrote: How do I get the app2 to refer to /usr/local/lib/libXXX.so? In FreeBSD, is there a way to instruct the dynamic linker (ld-elf.so.1) to continue to search for the same library name in different locations? Maybe an entry in /etc/libmap.conf (man 5 libmap.conf) will reveal a possible solution? Hi I was just now trying it after reading the libmap.conf(5). I specified following in /etc/libmap.conf: [/usr/bin/app2/] libXXX.so /usr/local/lib/libXXX.so Now when run app2 it does not say anymore undefined references but it says Shared object /usr/local/lib/libXXX.so not found ls -l /usr/local/lib/libXXX.so shows its there. Is /etc/libmap.conf specification correct? Regards Unga ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Library mapping question
On Friday 11 July 2008 10:22:21 Unga wrote: Hi all I have same name libraries in two different locations, eg. /usr/lib/libXXX.so and /usr/local/lib/libXXX.so. They were created using same sources and the same compiler. The app1 is linked with /usr/lib/libXXX.so and app2 is linked with /usr/local/lib/libXXX.so. When app2 is run, the dynamic linker (ld-elf.so.1) finds /usr/lib/libXXX.so first and ends up with following error: undefined reference to `_myxxx' This is not an issue with Linux's dynamic linker but it seems FreeBSD's function look up is very specific. I cannot change the dynamic linker's search path, then app1 fails. How do I get the app2 to refer to /usr/local/lib/libXXX.so? In FreeBSD, is there a way to instruct the dynamic linker (ld-elf.so.1) to continue to search for the same library name in different locations? What are the other possible options? The best option is to bump version number of the shared library with the more functions. FreeBSD doesn't link with .so, it links with .so.$VERSION. It would be easier to help you though, if we wouldn't be talking about libXXX but the actual libraries. Maybe it can be done by adding small changes to the port that installs /usr/local/lib/libXXX.so (if this isn't your own library). -- Mel Problem with today's modular software: they start with the modules and never get to the software part. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Library mapping question
At 2008-07-11T02:18:21-07:00, Unga wrote: [/usr/bin/app2/] libXXX.so /usr/local/lib/libXXX.so Now when run app2 it does not say anymore undefined references but it says Shared object /usr/local/lib/libXXX.so not found ls -l /usr/local/lib/libXXX.so shows its there. Is /etc/libmap.conf specification correct? In all the examples I've seen, the mapping entries in libmap.conf(5), i.e., the ones in the second column, are relative to the search path for libraries. Further, it is better to use only the basename of the executable in the constraint of the mapping --- the part enclosed by square brackets. So, the following may work: cd /usr/local/lib ln -s libXXX.so libFOO.so to distinguish it from the one in `/usr/lib', which directory comes earlier in the search path. Then, append these two lines to `/etc/libmap.conf': [app2] libXXX.so libFOO.so HTH, Raghavendra. -- N. Raghavendra [EMAIL PROTECTED] | http://www.retrotexts.net/ Harish-Chandra Research Institute | http://www.mri.ernet.in/ See message headers for contact and OpenPGP information. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Library mapping question
--- On Fri, 7/11/08, N. Raghavendra [EMAIL PROTECTED] wrote: From: N. Raghavendra [EMAIL PROTECTED] Subject: Re: Library mapping question To: [EMAIL PROTECTED] Cc: freebsd-questions@freebsd.org Date: Friday, July 11, 2008, 9:22 PM At 2008-07-11T02:18:21-07:00, Unga wrote: [/usr/bin/app2/] libXXX.so /usr/local/lib/libXXX.so Now when run app2 it does not say anymore undefined references but it says Shared object /usr/local/lib/libXXX.so not found ls -l /usr/local/lib/libXXX.so shows its there. Is /etc/libmap.conf specification correct? In all the examples I've seen, the mapping entries in libmap.conf(5), i.e., the ones in the second column, are relative to the search path for libraries. Further, it is better to use only the basename of the executable in the constraint of the mapping --- the part enclosed by square brackets. So, the following may work: cd /usr/local/lib ln -s libXXX.so libFOO.so to distinguish it from the one in `/usr/lib', which directory comes earlier in the search path. Then, append these two lines to `/etc/libmap.conf': [app2] libXXX.so libFOO.so HTH, Raghavendra. Hi Raghavendra Thanks for the reply. It's most promising for the moment. Mel's method may be used next time when I build the app. Best Regards Unga ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
