On Feb 6, 2008 6:44 PM, Jonathan Berry <berryja@xxxxxxxxx> wrote:
> On Feb 6, 2008 5:42 PM, MHR <mhullrich@xxxxxxxxx> wrote:
> > According to the man pages for sem_wait, etc., POSIX semaphores are
> > available in Linux 2.6 (with the right NTPL threading in glibc).
> >
> > However, I have a program that compiles just fine but won't link because it
> > can't find the library for the semaphore operations.
> >
> > What am I missing?
> >
> > I ran a find and grep through all the libc's on the system and they turned
> > up nothing:
> >
> > $ find /lib /usr/lib -name "*libc\.*" -print -exec nm {} 2>/dev/null \; |
> > grep sem_
> >
> > (no results)
> >
> > Time is critical (yeah, I know...).
>
> >From man sem_overview:
> "Linking
> Programs using the POSIX semaphores API must be compiled with cc -lrt
> to link against the real-time library, librt."
>
> Are you linking with -lrt?
>
Works. Thanks. Must have been working on it too long - I saw that
and misread it.
mhr
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
