[Python-bugs-list] [ python-Bugs-210665 ] Compiling python on hpux 11.00 with threads (PR#360)
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Tue, 20 Mar 2001 09:11:20 -0800
Bugs item #210665, was updated on 2000-07-31 14:12
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>Category: Threads
Group: Platform-specific
Status: Open
Priority: 3
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Guido van Rossum (gvanrossum)
Summary: Compiling python on hpux 11.00 with threads (PR#360)
Initial Comment:
Jitterbug-Id: 360
Submitted-By: philipp.jocham@salomon.at
Date: Fri, 16 Jun 2000 08:47:06 -0400 (EDT)
Version: 1.5.2
OS: HP-UX 11.00
There are two missing details in the configure process to make this work
out of the box.
First: The function
pthread_create
isn't found in library libpthread.a but in libcma.a, because
pthread_create is just a macro in sys/pthread.h pointing to
__pthread_create_system
After patching ./configure directly and running
./configure --with-thread
(now detecting the correct library /usr/lib/libpthread.a) I also
added -lcl to Modules/Makefile at
LIBS= -lnet -lnsl -ldld -lpthread -lcl
otherwise importing of modules with threads didn't work
(in this case oci_.sl from DCOracle).
I'm not sure about the correct syntax or wether it's the correct
place and method, but I would suggest a solution like the following
code snippet.
[...]
AC_MSG_CHECKING(for --with-thread)
[...]
AC_DEFINE(_POSIX_THREADS)
LIBS="$LIBS -lpthread -lcl"
LIBOBJS="$LIBOBJS thread.o"], [
AC_CHECK_LIB(pthread, __pthread_create_system, [AC_DEFINE(WITH_THREAD)
[...]
I hope this helps to make installation process smoother.
Fell free to contact me, if there are further questions.
Philipp
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====================================================================
Audit trail:
Tue Jul 11 08:26:01 2000 guido moved from incoming to open
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Comment By: Guido van Rossum (gvanrossum)
Date: 2000-11-02 08:38
Message:
Reopened because there's a dissenting opinion.
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Comment By: Nobody/Anonymous (nobody)
Date: 2000-11-02 07:25
Message:
Ok, check out the configure.in patch I created against Python 2.0:
ftp://ftp.thewrittenword.com/outgoing/pub/python-2.0.patch
I tested it under HP-UX 11.00 and it works just fine. The thread test worked too.
--
albert chin (china@thewrittenword.com)
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Comment By: Nobody/Anonymous (nobody)
Date: 2000-11-01 09:18
Message:
Ick! Why check for anything with __ prepended to the name? Isn't that like checking for a "hidden" function, which might not be there in a followup version?
On HP-UX 11.00, pthread_create is in /usr/lib/libc.sl anyway. The proper way to check for pthread_create is:
AC_TRY_LINK([#include <pthread.h>
void * start_routine (void *arg) { exit (0); }], [
pthread_create (NULL, NULL, start_routine, NULL)], [
AC_MSG_RESULT(yes)], [
AC_MSG_RESULT(no)])
I modified configure.in in 2.0 to remove the patch you included in CVS 1.175 and added a test to include <pthread.h> similar to the above (linked without -lpthread and with -lpthread). I'm testing now. Will provide a patch when things are tested.
Also, I don't think threads on HP-UX 10.20 will work unless you have the DCE libraries installed. Anyhow, I'd probably avoid threads on 10.20.
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Comment By: Guido van Rossum (gvanrossum)
Date: 2000-10-30 09:48
Message:
Philipp submitted a patch to configure.in that fixes the problem for him and doesn't look like it would break things for others. configure.in, CVS revision 1.175.
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Comment By: Guido van Rossum (gvanrossum)
Date: 2000-10-13 07:45
Message:
OK, so the correct thing to do seems to be to somehow add #include <pthread.h> to the tests for thread libraries. I'm afraid I won't be able to fix this in 2.0final, but I'll think about fixing it in 2.1 (or 2.0.1, whichever comes first :-).
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Comment By: Eddy De Greef (edg)
Date: 2000-10-10 04:55
Message:
I can confirm that the bug still exists in 2.0c1.
It works fine on HP-UX 10.20 (which only has libcma),
but not on HP-UX 11 (which both has libcma and libpthread).
The pthread_create function is not defined as a macro though,
but as a static function:
static int pthread_create(pthread_t *tid, const pthread_attr_t *attr, void *(*start_routine)(void *), void *arg)
{ return(__pthread_create_system(tid, attr, start_routine, arg)); }
I don't see an easy way to work around this.
I'm not a configure expert, but perhaps the script should
first check whether this code compiles and links:
#include <pthread.h>
int main()
{
pthread_create(0,0,0,0);
return 0;
}
and if not, fall back on the other tests ?
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Comment By: Guido van Rossum (gvanrossum)
Date: 2000-10-06 10:40
Message:
I have two reports from people for whom configure, build and run with threads now works on HP-UX 10 and 11. I'm not sure what to do about this report... What's different on Philipp's system???
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Comment By: Guido van Rossum (gvanrossum)
Date: 2000-09-25 06:10
Message:
I'm hoping that this was fixed by recent changes. Sent an email to the original submittor to verify.
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Comment By: Guido van Rossum (gvanrossum)
Date: 2000-09-22 02:56
Message:
Taking this because I'm considering to redesign the thread configuration section in configure.in anyway -- there's a similar bug report for Alpha OSF1.
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Comment By: Jeremy Hylton (jhylton)
Date: 2000-09-07 15:05
Message:
Please do triage on this bug.
----------------------------------------------------------------------
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