target/9330: small alphaev56-dec-osf5.1 --enable-threads=posix problem

[mengel@users.sourceforge.net]

>Number:         9330
>Category:       target
>Synopsis:       small alphaev56-dec-osf5.1 --enable-threads=posix problem
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jan 15 10:06:00 PST 2003
>Closed-Date:
>Last-Modified:
>Originator:     Marc Mengel
>Release:        unknown-1.0
>Organization:
>Environment:
alphaev56-dec-osf5.1 configured with --enable-threads=posix
>Description:
alphaev56-dec-osf5.1 configured with --enable-threads=posix
The /usr/include/pthreads.h file triggers an #error directive
if _REENTRANT is not defined when you include it.

I suggest the attached patch, which #defines _REENTRANT in gthr_posix.h when __osf__ is defined, just before including
pthread.h
>How-To-Repeat:
On a DEC Unix, er,Compaq Tru-64, er whatever they call
it now, where cc -V reports:
Compaq C V6.4-014 on Compaq Tru64 UNIX V5.1A (Rev. 1885)
do:
-----
configure --enable-threads=posix
make bootstrap
------
You get an #error trip when including pthreads.h
>Fix:
Apply attached patch to #define _REENTRANT
>Release-Note:
>Audit-Trail:
>Unformatted:
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