HI Stuart,
Stuart Hodgson wrote: > Hi, > > I have been suing the eldk4.1 tool chain for a few months now and have > not not encountered any problems with building until now. I build for > two slightly different archs, ppc_85xx and ppx_82xx. > > The problem I have come up against is related to some of the semaphore > functions in semaphore.h, namely sem_wait, sem_post. This was originally > noticed in a third party driver I am porting from one board to another > but a small test program has shown the same results. > > Calls to these functions on the ppc_82xx platform return -1 with an > error code of 38, in this case meaning ENOSYS (not implemented). On the > ppc_85xx the same program executes fine, thus I conclude that it is > specific to the libc-2.3.5 for ppc_82xx. Has anyone else come across > this problem, I did find one thread but there was no conclusion listed. > > These work fine for me with ppc_6xx architecture and ELDK 4.1, although they didn't with ELDK 4.0. In that case, I was getting ENOSYS on sem_open() and sem_init(). Do these functions return 0 for you? I assume you're using a kernel that supports POSIX semaphores (I think that started at 2.6.12) and that you're using the glibc version of ELDK and not ulibc. > I also can not find anything stating that these functions are not > implemented for the 82xx arch compared with others for the eldk4.1 > > Thanks > > Stuart > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > regards, Ben _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded