Date: Sun, 31 Aug 2003 12:19:27 -0700 From: Joshua Oreman <oremanj@get-linux.org> To: Peter Wood <peter@alastria.net> Cc: hackers@freebsd.org Subject: Re: Linking with -shared and -pthread... Message-ID: <20030831191927.GA6197@webserver> In-Reply-To: <kkh4lv8pkgfn2so4ou9i9t3cvc0cimpcig@4ax.com> References: <kkh4lv8pkgfn2so4ou9i9t3cvc0cimpcig@4ax.com>
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On Sun, Aug 31, 2003 at 08:13:03PM +0100 or thereabouts, Peter Wood wrote: > Good Evening, > > I've been looking at writing a program that uses both shared libraries > (dlopen/dlclose) and POSIX threads. I however haven't had any success in my > simple tests. > > After doing some research via google I found that due to -shared pthreads > wasn't linked into the shared library, fair enough, it's logical. > > My question is, is it possible to write programs that use pthreads in their > shared libraries on FreeBSD. > > For compiling the base program (that is the program that loads the shared > libraries) I've been using: > > gcc -export-dynamic -pthread master.c -o master I use something like gcc -Wl,-export-dynamic master.c -o master -lc_r > > And for each of the shared libaries I've been using: > > gcc -shared -pthread slave.c -o slave.so I use gcc -shared -fPIC -DPIC slave.c -o slave.so The pthread functions from `master' will automatically be exported to `slave'. -- Josh
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