Xcode using FIXME, TODO, ???,?

A workaround is to use a build script which marks those as warnings:

KEYWORDS="TODO|FIXME|\?\?\?:|\!\!\!:"
find "${SRCROOT}" \( -name "*.h" -or -name "*.m" \) -print0 | \
xargs -0 egrep --with-filename --line-number --only-matching "($KEYWORDS).*\$" | \
perl -p -e "s/($KEYWORDS)/ warning: \$1/"

Credit to Benjamin Ragheb.

In xcode 4.1 (don't know if this works in previous versions) I write

#warning TODO: fix this later...

to get a compile warning or

#error FIXME: fix now!

to get a compile error.

I also add these to the code snippet library to make it really ease to add todos.