Re: FW: Redhat 7.0 and threads

[Carl Litt <carl@execulink.com>]

Is OpenLDAP even safe with LinuxThreads?  I remember reading that 1.2.x
was not safe with preemptive threads (such as LinuxThreads).  There was
talk that 2.0 would be OK with it, but I have never found any
confirmation.

I've looked at several 2.0.7 SRPMS but they all --disable-threads for
slapd, so I'm assuming it is still not safe.

BTW: I'm running RH 6.2 with glibc-2.1.3-22.

Carl Litt
Network Administrator
Execulink Internet





On Thu, 29 Mar 2001, Glen Coakley wrote:

>
> This is what I got when configuring under RedHat 7.0 (Kernel 2.2.16-22 on an
> i686). They start to differ where configure appears to be trying to figure
> out how to link with the thread library. (I'm guessing here) If you know how
> to include that library then add it to the env. var. LDFLAGS before invoking
> configure.
>
> Otherwise, I would run "sh -x configure" or read through the script (search
> for 'thread') to figure out what it is doing.
>
>
> checking for NT Threads... checking for _beginthread... no
> no
> checking for pthread.h... yes
> checking POSIX thread version... final
> checking for LinuxThreads pthread.h... yes
> checking for GNU Pth pthread.h... no
> checking for sched.h... yes
> checking for pthread_create in default libraries... no
> checking for pthread link with -kthread... no
> checking for pthread link with -pthread... yes
> checking for sched_yield... yes
> checking for pthread_yield... yes
> checking for pthread_kill... yes
> checking for pthread_rwlock_destroy... yes
> checking for pthread_detach with <pthread.h>... yes
> checking for pthread_setconcurrency... yes
> checking for pthread_getconcurrency... yes
> checking for thr_setconcurrency... no
> checking for thr_getconcurrency... no
> checking for pthread_kill_other_threads_np... yes
> checking for LinuxThreads implementation... yes
> checking for LinuxThreads consistency... yes
> checking if pthread_create() works... yes
> checking if select yields when using pthreads... yes
> checking for thread specific errno... yes
> checking for thread specific h_errno... yes
>
> ________________________________
> Glen Coakley, Sr. Software Engineer
> MQSoftware Inc., (763) 543-4845
> Have you ever wonder what happens when you run "rm -rf / " but been afraid
> to try it?
>
>
> -----Original Message-----
> From: Bob Tanner [mailto:tanner@real-time.com]
> Sent: Thursday, March 29, 2001 2:12 AM
> To: openldap-software@OpenLDAP.org
> Subject: Redhat 7.0 and threads
>
>
> The myraid of threads check confuses the crap out of me. I am not 100% sure
> what
> is the problem, but under Redhat 7.0 O get the following:
>
> checking for pthread.h... yes
> checking POSIX thread version... final
> checking for LinuxThreads pthread.h... yes
> checking for GNU Pth pthread.h... no
> checking for sched.h... yes
> checking for pthread_create in default libraries... no
> checking for pthread link with -kthread... no
> checking for pthread link with -pthread... no
> checking for pthread link with -pthreads... no
> checking for pthread link with -mthreads... no
> checking for pthread link with -thread... no
> checking for pthread link with -lpthread -lmach -lexc -lc_r... no
> checking for pthread link with -lpthread -lmach -lexc... no
> checking for pthread link with -lpthread -Wl,-woff,85... no
> checking for pthread link with -lpthread... no
> checking for pthread link with -lc_r... no
> checking for pthread link with -threads... no
> checking for pthread link with -lpthreads -lmach -lexc -lc_r... no
> checking for pthread link with -lpthreads -lmach -lexc... no
> checking for pthread link with -lpthreads -lexc... no
> checking for pthread link with -lpthreads... no
> configure: error: could not link with POSIX Threads
>
> What type of threads are used in Redhat 7.0?
>
> I tried the other src.rpm from the open-it.org(?) site, it doesn't compile
> either.
>
>