Pthreads in GNAT

Pthreads in GNAT

[Brian Vinter]

I'm trying to run gnat on a HP SNAKE, I have the phreads-1.51 package, but 
while linking I get the following message:

/bin/ld: Unsatisfied symbols:
   pthread_mutexattr_setprotocol (code)
   pthread_attr_getprio (code)
   pthread_condattr_init (code)
   pthread_attr_setprio (code)
   pthread_setschedattr (code)
   sigwait (code)
   clock_gettime (code)
   pthread_getschedattr (code)
   pthread_mutexattr_setprio_ceiling (code)
   pthread_condattr_destroy (code)
   pthread_kill (code)

Which pthreads libary should I use to get my program to work?

Thanks in advance!

Brian
--
Vinter 8>}

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Re: Pthreads in GNAT

[Vladimir Vukicevic]

In article <1995Apr5.114427.17834@news.uit.no> vinter@cs.uit.no (Brian Vinter) writes:

> 
> I'm trying to run gnat on a HP SNAKE, I have the phreads-1.51 package, but 
> while linking I get the following message:
> [...]
> Which pthreads libary should I use to get my program to work?
> 

You need pthreads 1.60 beta.. whatever the latest beta is on rtfm.mit.edu.
Note that there are numerous fixes, patches, etc. that have been done to
make gnat & Provenzano's pthreads work better... I should be releasing
another version of the patches, etc. soon.

	- Vladimir

Re: Pthreads in GNAT

[Robert W. Brewer]

>>>>> "R" == Robert Dewar <dewar@cs.nyu.edu> writes:
R> Using the Provenzano threads, it is indeed possible to get tasking
R> working on Linux, but to do it with the 2.03 release requires quite
R> a bit of knowledge about what is going on.

I'm having trouble getting pthreads working with GNAT 2.04 under Linux.
I have the binary version from ftp.cs.nyu.edu, and am using 
pthreads 1.60beta2.  I get all kinds of undefined symbols when linking,
like the following:

$ gnatbl tetris.ali -L/usr/tmp/pthreads/config -lpthread

/home/mcculley/gcc-2.6.3/ada/rts/i-cpotim.adb(.text+0x33): undefined reference to `clock_gettime'
/usr/lib/gcc-lib/i486-linux/2.6.2/adalib/i-cporte.o: In function `interfaces__c__posix_rte__setjmp':
/home/mcculley/gcc-2.6.3/ada/rts/i-cporte.adb:255: undefined reference to `setjmp'
/usr/lib/gcc-lib/i486-linux/2.6.2/adalib/i-cporte.o: In function `interfaces__c__posix_rte__sigsetjmp':
/home/mcculley/gcc-2.6.3/ada/rts/i-cporte.adb:267: undefined reference to `sigsetjmp'


I'm also curious about the /home/mcculley/ paths.  They seem a bit strange.

Any tips?  Thanks.

-Rob
-- 
Robert W. Brewer KB3BEH   A thorough knowledge of the Bible is worth more
rbrewer@psu.edu           than a college education.  --Theodore Roosevelt