+#
+# If unsetenv is available, use it in conjunction with PERL_USE_SAFE_PUTENV to
+# work around Sun bugid 6333830. Both unsetenv and 6333830 only appear in
+# Solaris 10, so we don't need to probe explicitly for an OS version. We have
+# to append this test to the end of config.over as it needs to run after
+# Configure has probed for unsetenv, and this hints file is processed before
+# that has happened.
+#
+cat >> config.over <<'EOOVER'
+if test "$d_unsetenv" = "$define" -a \
+ `expr "$ccflags" : '.*-D_PERL_USE_SAFE_PUTENV'` -eq 0; then
+ ccflags="$ccflags -DPERL_USE_SAFE_PUTENV"
+fi
+EOOVER
+