[freetds] ct-lib unit tests link statically
Johnny C. Lam
jlam at pkgsrc.org
Thu Jul 10 09:28:00 EDT 2008
James K. Lowden wrote:
> Johnny C. Lam wrote:
>> Setting LD_LIBRARY_PATH will override any embedded rpath
> Huh, so it does!
> OT: Now I *really* don't know why NetBSD doesn't ship by default with a
> ld.so.conf that includes /usr/local/lib and /usr/pkg/lib. I had been
> given to understand that relying on RPATH was more secure than using
> LD_LIBRARY_PATH but, because the environment variable overrides, any user
> can cause any shared object to be used.
> I think maybe I should simplify my life by adding usr/local/lib and
> /usr/pkg/lib to /etc/ld.so.conf.
Note that one important disadvantage is that you can't have different
libraries with the same name in the directories listed in /etc/ld.so.conf.
There is an FAQ about ELF on NetBSD, but the relevant paragraph is here:
>> How are you verifying that the wrong shared libraries are being used?
> See above. datafmt is a ct-lib unit test. readelf(1) shows the embedded
> RPATH. The first part -- /usr/local/lib:/usr/pkg/lib -- comes directly
> from LDFLAGS. ldd(1) shows datafmt is dynmically linked to
Okay. The libtool-generated scripts that call the programs in .libs
should correctly override the embedded RPATH via LD_LIBRARY_PATH (or
DYLD_LIBRARY_PATH on MacOS), though I'm not 100% certain that it will
work on every platform (not every platform has a way to embed or
override shared library information).
-- Johnny C. Lam
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