Make targets depend on do-files.

This includes two different scenarios, first if the do-files which was
used to build the target has changed the target must be rebuilt.

Second, if a target was build by a lower priority do-file, like
default.fuu.do, then it must be rebuilt if <target>.fuu.do appears.

Note that at this point, Redofile as do-file is semi-supported, as it's
future is uncertain.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/redo-always.c b/src/redo-always.c
index a542c59..352e6c8 100644
--- a/src/redo-always.c
+++ b/src/redo-always.c
@@ -6,11 +6,13 @@
  * of the MIT license.  See the LICENSE file for details.
  */
 
+#include <stddef.h>
+
 #include "build.h"
 
 int main(int argc, char *argv[]) {
     for (int i = 1; i < argc; ++i) {
         build_target(argv[i]);
-        add_dep(argv[i], 'a');
+        add_dep(argv[i], NULL, 'a');
     }
 }