bash/zsh function to automatically find compile_commands.json for the Build Ear (BEAR) tool

bearrc

# Add this to your bashrc or zshrc
# or put it into a seperate .bearrc and load that file from your bashrc or zshrc
# You will need to create the initial BEAR_FILE manually, e.g., with "bear make"
# in the right directory.
# After that, simply call "m" to build and add the compiler commands to the BEAR_FILE.

BEAR_FILE=compile_commands.json
function m () {
  TOPDIR=$PWD
  while [ ! -f $TOPDIR/$BEAR_FILE ] ; do
    TOPDIR=$(realpath $TOPDIR/..)
    if [ $TOPDIR = / ] ; then
      echo "Could not find $BEAR_FILE anywhere in the tree, stopped at $TOPDIR."
      return -1
    fi
  done
  bear -a -o $TOPDIR/$BEAR_FILE make -j`nproc` $@
}