Search Makefiles recursively and run make(1) there, if one is found

mk

#!/bin/bash
#
# Search Makefiles recursively and run make(1) there, if one is found
#

DEPTH=$(pwd | tr -c -d / | wc -c)
MOD=.

while [[ $DEPTH > 0 ]]
do
    if [[ -f $MOD/Makefile ]]
    then
        if [[ $MOD == "." ]]; then
          make "$@"
        else
          echo "make -C $MOD $@"
          make -C $MOD "$@"
        fi
        exit 0
    fi
    MOD=$MOD/..
    let DEPTH--
done

echo "No Makefile found." >&2
exit 1

What is missing is to detect another -C in the mk args and merge it with the -C of the detected Makefile.