}
use Config;
-if ( ($Config{'cppstdin'} =~ /\bcppstdin\b/) &&
+if ( $^O eq 'MacOS' ||
+ ($Config{'cppstdin'} =~ /\bcppstdin\b/) &&
! -x $Config{'binexp'} . "/cppstdin" ) {
print "1..0 # Skip: \$Config{cppstdin} unavailable\n";
exit; # Cannot test till after install, alas.