Listing 6. Using Aap as a make Replacement

all : hello

# Manually compile the hello program.
hello : hello.c
   :sys cc -o $target $source

# Clumsy way to generate a C program.
hello.c:
   :print Generating $target
   :print >! $target $(#)include $(<)stdio.h$(>)
   :print >> $target main() {
   :print >> $target    printf("Hello World!\n");
   :print >> $target    return 0;
   :print >> $target }