We need to -I and -L the build tree directories, not the directories in /usr/local or wheveever. Otherwise (a) the `./debian build' fails if wiringPi is not installed (b) if it _is_ installed, the build picks up the installed versions rather than the versions being built, which is wrong. Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>pull/62/head