gnats/495: unsetenv() not defined on Solaris

[malcolmp]

>Number:         495
>Notify-List:    
>Category:       gnats
>Synopsis:       unsetenv() not defined on Solaris
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 06 21:08:02 -0500 2005
>Originator:     Malcolm Purvis
>Release:        4.1.0
>Organization:
Aurema Pty Ltd, Sydney, Australia
>Environment:
Solaris 2.6 and Solaris 2.8 on a variety of UltraSparc machines.
>Description:
unsetenv() has been left off the list of functions that should have been 
retained when libiberty was removed.  The configure infrastructure is present 
to detect if the function is not present in the system, but the implementation 
of the function is not.

unsetenv() is not present in Solaris 2.6 nor 2.8 and so GNATS does not build on 
these systems.
>How-To-Repeat:
Build GNATS 4.1.0 on a Solaris 2.8 machine.
>Fix:
Apply the attached patch.
>Unformatted:
 ----gnatsweb-attachment----
 Content-Type: text/x-patch; name="unsetenv.patch"
 Content-Transfer-Encoding: base64
 Content-Disposition: attachment; filename="unsetenv.patch"
 
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