Date: Sun, 2 Mar 2008 09:38:51 -0700 From: John E Hein <jhein@timing.com> To: threads@freebsd.org Subject: running threaded tasks in dynamically linked objects from a non-threaded app Message-ID: <18378.55323.480165.918523@gromit.timing.com>
next in thread | raw e-mail | index | archive | help
I am having some issues with an application that uses...
[1] perl to run test scripts
[2] with eventually call modules in C modules
[3] which link with a lib that contains pthread* references.
When the tests run, one gets undefined references to pthread calls
from the run-time linker.
[1] the perl port was not built WITH_THREADS=yes (non-threaded
is the default)
[3] this lib was built with -pthread, but this does not contain
an explicit dependency on any threading library. That's
how our -pthread works (so one can decide at the time an
application is linked which threading lib to use)
workarounds:
- LD_PRELOAD=/usr/lib/libthr.so (or libpthread.so if desired)
- require perl to be built WITH_THREADS=yes for
users of this application
- build the lib in [3] with -lthr or -lpthread. This
can break if perl in built WITH_THREADS=yes and
the threading libs in [1] and [3] don't match.
These all have weaknesses in one facet or another.
Are there any different solutions?
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?18378.55323.480165.918523>