[Info-vax] Compile error (Pthread on VMS)?

[Stephen Hoffman]

On 2013-02-19 19:51:46 +0000, sfloreslyon at gmail.com said:

> We’re trying to port an application to VMS that currently runs on an 
> old version of Tru64.  We’re currently doing the compiles on Alpha 
> because that is our test system, ultimately (and soon) we’ll move the 
> port to Itanium.
> 
> We’re running OpenVMS 8.3, but when we compile modules that use pthread 
> calls (e.g. pthread_kill) we take the following errors.  I’ve had no 
> luck figuring out what the VMS equivalent of compiling with “-pthread” 
> is and I also can’t imagine why a VMS include file would include 
> something that doesn’t exist.
> 
> dsa124:[tcps] cc/define=_PTHREAD_ENV_UNIX tcps
> 
> #  error "Please compile the module including pthread.h with -pthread"
> ...^
> %CC-E-ERRORMESSAGE, #error "Please compile the module including 
> pthread.h with -pthread"
> at line number 324 in module PTHREAD of text library 
> SYS$COMMON:[SYSLIB]SYS$STARLET_C.TLB;1
> 
> # include <standards.h>
> ..^
> %CC-F-NOINCLFILEF, Cannot find file <standards.h> specified in #include 
> directive.
> at line number 329 in module PTHREAD of text library 
> SYS$COMMON:[SYSLIB]SYS$STARLET_C.TLB;1
> 
> Any help or pointers you have would be greatly appreciated!
> 
> Thanks,
> Sherri LyonConnectivity Applications – Sabre/AAHP Enterprise 
> ServicesTelephone +1 918.939.5362Email sherri.lyon at hp.com   4000 N. 
> Mingo Rd., MD 375 / Tulsa, OK  74116

Try a compile with CC /REENTRANCY=MULTITHREAD and LINK /THREADS; 
usually with /THREADS=(MULTIPLE_KERNEL_THREADS,UPCALLS) enabled.

Try removing that _PTHREAD_ENV_UNIX define or at least see what it's 
enabling, too; that's not immediately familar with OpenVMS, and looks 
to be specific to the Tru64 Unix implementation.  (There's a lot of 
common code here, and I'd suspect you're getting into the Unix code 
path in the header files.)

The OpenVMS pthreads manual is here: 
<http://h71000.www7.hp.com/doc/73final/6493/6101pro_contents.html>

Also see the discussion of reentrancy in the C RTL manual 
<http://h71000.www7.hp.com/doc/83final/5763/5763pro_007.html>

Phillip has an example of a threaded TCP program at 
<http://vouters.dyndns.org/tima/Unix-OpenVMS-pthreaded-signals-tcp-portable-example.html> 


Do remember check with the folks at HP around the problems with the 
documentation and errors here, too.  :-)

-- 
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