# target would not be built. If a dependency build timestamp is
# greater than or equal to a targets build timestamp, assume the
# dependency has been rebuilt and the target should be rebuilt.
- target_ts="$(cat "$REDO_DIR/$target_abspath.buildtime" 2>/dev/null || echo 0)"
- dependency_ts="$(cat "$REDO_DIR/$dependency.buildtime" 2>/dev/null || echo 0)"
+ if [ -e "$REDO_DIR/$target_abspath.buildtime" ]; then \
+ read target_ts < "$REDO_DIR/$target_abspath.buildtime";
+ else
+ target_ts=0
+ fi
+ if [ -e "$REDO_DIR/$dependency.buildtime" ]; then
+ read dependency_ts < "$REDO_DIR/$dependency.buildtime"
+ else
+ dependency_ts=0
+ fi
if [ "$dependency_ts" -ge "$target_ts" ]; then
_echo_debug_message \
"$REDO_DEPTH$dir$target_relpath dependency $dependency_relpath uptodate, but built later than $target_relpath."
else
_echo_debug_message "$REDO_DEPTH$dir$target is up to date."
fi
- _add_target "$(readlink -f $target)"
+ # Some do files (like all.do) do not usually generate output.
+ if [ -e "$target" ]; then
+ _add_target "$(readlink -f $target)"
+ fi
}
_echo_debug_message() {
fi
# If a file exists and has an entry in the dependency database and ctime
# is the same as in the entry in the ctime database, it is up to date.
- if [ "$(cat "$REDO_DIR/$target".ctime 2>/dev/null || :)" = \
- "$(stat -c%Y "$target")" ]; then
+ if (export LC_ALL=C; stat -c%Y "$target" | grep -Fqx -f "$REDO_DIR/$target".ctime); then
_echo_debug_message "$REDO_DEPTH$dir$target_relpath.ctime match."
return 0
else
# If a file exists and has an entry in the dependency database and
# ctime is different from the entry in the ctime database, but md5sum
# is the same as md5sum in the md5sum database, it is up to date.
- if [ "$(cat "$REDO_DIR/$target".md5sum 2>/dev/null || :)" = \
- "$(md5sum < "$target")" ]; then
+ if (md5sum < "$target" | grep -Fqx -f "$REDO_DIR/$target".md5sum); then
_echo_debug_message "$REDO_DEPTH$dir$target_relpath.md5sum match."
return 0
else