#!/bin/sh

# There is no way to make clang's "argument unused" warning fatal. So when

# configure checks for supported flags, it runs $CC, $CXX, $LD via this

# wrapper.

#

# Ideally the search string would also include 'clang: ' but this output might

# depend on clang's argv[0].

if out=`"$@" 2>&1`; then

echo "$out"

if echo "$out" | grep 'warning: argument unused' >/dev/null; then

echo "$0: found clang warning"

exit 1

else

exit 0

fi

else

code=$?

echo "$out"

exit $code

fi