libstdc++/6702: requirements for wchar_t support are too restrictive

[dale@peakall.net]

>Number:         6702
>Category:       libstdc++
>Synopsis:       requirements for wchar_t support are too restrictive
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Fri May 17 10:26:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Dale Peakall
>Release:        3.1 20020510 (prerelease)
>Organization:
>Environment:
solaris 8
>Description:
The requirements before libstdc++ will build with support
for wchar_t are too restrictive.

Changing cwchar and cwctype to not try import the missing
functions into std namespace and changing config.h and c++config.h to define _GLIBCPP_USE_WCHAR_T and rebuilding libstdc++ works without problem on solaris 8, although autoconf had decided that this wasn't possible.

Support for wchar_t is mandated by the C++ standard - gcc should make more extensive efforts to support it on any platform that it reasonably can (i.e. supports the set of functions used by libstdc++).
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: