[patch] GCC 3.0 configury hack

[Mumit Khan]

[ I'm not subscribe to this list, so please copy me if appropriate ]

This is a sad hack, but one that is rather necessary. Even as libstdc++ 
matures, I don't really foresee this hack going away anytime soon given
the mess of a task that libstdc++ faces. The other alternative is to 
"dumb down" the autoconf macro OCTAVE_CXX_ISO_COMPLIANT_LIBRARY (see
the definition in aclocal.m4), but I personally prefer this workaround,
at least for now.

2001-06-19  Mumit Khan  <address@hidden>

        * configure.in: Assume that GCC versions >= 3.0 is ISO C++
        compliant to work around platform-specific problems.

Index: configure.in
===================================================================
RCS file: /cvs/octave/configure.in,v
retrieving revision 1.348
diff -u -3 -p -r1.348 configure.in
--- configure.in        2001/05/23 06:41:58     1.348
+++ configure.in        2001/06/19 21:26:00
@@ -185,6 +185,22 @@ changequote([,])dnl
   ;;
 esac
 
+#
+# The test for ISO C++ compliance with GCC versions >= 3.0 (and possibly
+# with RedHat's GCC 2.96, which is based on pre-3.0 snapshot) fails on a 
+# few platforms due to lack of integration with the host environment 
+# (eg., missing iswblank on Solaris causes error when including cwtype), 
+# so we force it here. This is a complete hack, but it's better than 
+# having configure guess incorrectly on various platforms, only to have
+# the compilation fail mysteriously later on. For now, we assume that 
+# GCC versions >= 3.0 is ISO C++ compliant. 
+# 
+
+case "$gxx_version" in
+  1.* | 2.[[0-8]].* | 2.9[[0-6]].*) ;;
+  *) octave_cv_cxx_iso_compliant_library='yes'; ;;
+esac
+
 CXX_VERSION=
 if test -n "$gxx_version"; then
   CXX_VERSION="$gxx_version"

Regards,
Mumit