check_cmake_missing_files.sh

#!/bin/sh

set -e
set -o pipefail

readonly MESOS_DIR="$(git rev-parse --show-toplevel)"

# shellcheck source=atexit.sh
. "$MESOS_DIR"/support/atexit.sh


SOURCE_DIRS="$MESOS_DIR/src $MESOS_DIR/3rdparty"


# Get a list of all source files in the tree.
#
# We rely on the fact that in Mesos source files end in `.cpp`.
readonly FILES=$(mktemp)
atexit "rm $FILES"
for file in $(cd "$MESOS_DIR" && git ls-files "$MESOS_DIR" | grep '.*\.cpp'); do
  realpath "$MESOS_DIR/$file"
done | sort > "$FILES"


# Get a list of all source files in the cmake build.
#
# Since Mesos add source files to the cmake build conditionally, even
# cmake does not know the full list of all possible source files. As a
# heuristic we search the cmake build for likely source file names.
readonly CMAKE_FILES=$(mktemp)
atexit "rm $CMAKE_FILES"

# shellcheck disable=SC2086
# shellcheck disable=SC2044
for cm in $(find $SOURCE_DIRS -name CMakeLists.txt); do
  base="$(dirname "$cm")"

  # shellcheck disable=SC2013
  for file in $(grep -o '\(\S\)*\w\+\.cpp' "$cm"); do
    # We ignore weird filename-like patterns which do
    # not correspond to a path.
    realpath "$base/$file" || true
  done
done | sort > "$CMAKE_FILES"


if ! diff -a "$FILES" "$CMAKE_FILES" > /dev/null; then
  printf "%s\\n" "The following files do not appear in any CMakeLists.txt:"
  comm -23 "$FILES" "$CMAKE_FILES"
fi