Somewhat hacky, but semi-functional, way of searching for included CMake modules from a directory.

find-included-cmake-modules.sh

#!/bin/sh
# first grab the lines that have an include command,
# then filter out the ones where it might be commented out (this might over-filter - can drop this stage)
# then, use sed to grab just the stuff in between () in the include statement
# and finally, sort/uniq.
ag --nofilename 'include[(].*' | \
  grep -v '#.*include[(]' | \
  sed -r -n 's/.*include[(]([^)]+)[)]/\1/p' | \
  sort --unique

find-packages-sought.sh

#!/bin/sh
# first grab the lines that have an find_package command,
# then filter out the ones where it might be commented out (this might over-filter - can drop this stage)
# then, use sed to grab just the first word in the ()
# and finally, sort/uniq.
ag --nofilename 'find_package[(].*' | \
  grep -v '#.*find_package[(]' | \
  sed -r -n 's/.*find_package[(]([^) ]+).*/\1/p' | \
  sort --unique