AM_AUX_DIR_EXPAND incorrect on MacOS X: how to fix?

AM_AUX_DIR_EXPAND inserts this shell fragment: am_aux_dir=`CDPATH=:; cd $ac_aux_dir && pwd` which does not work properly on MacOS X 10.1. It improperly inserts a newline at the end of the value. This trickles down to config.status, where it results in a newline appearing in the sed script fragm

Re: AM_AUX_DIR_EXPAND incorrect on MacOS X: how to fix?

Just checked: this works, though I'm not sure how portable it is: # expand $ac_aux_dir to an absolute path am_aux_dir=`CDPATH=:; cd $ac_aux_dir &> /dev/null && pwd` --kd > > AM_AUX_DIR_EXPAND inserts this shell fragment: > > am_aux_dir=`CDPATH=:; cd $ac_aux_dir && pwd` > > which does not work