avoid including header files directly

The kernel warns against including header files directly. For good
reason: our previous approach (just -I$KERNEL/include) caused all
kinds of files to be included that should have come from /usr/include
instead.

This patch rewrites the Makfile so that the (few) needed headers are
copied into the liblitmus src tree before compiling the library. This
avoids having to specify the kernel include directories with -I, and
also makes it easier to link against liblitmus (external applications
do not need to know where the kernel is).

Finally, this allows us to enable -Werror.

1 files changed, 3 insertions, 3 deletions

diff --git a/include/litmus.h b/include/litmus.h
index b798c92..c4c4129 100644
--- a/include/litmus.h
+++ b/include/litmus.h
@@ -5,13 +5,13 @@
 extern "C" {
 #endif
 
+#include <sys/types.h>
+
 /* Include kernel header.
  * This is required for the rt_param
  * and control_page structures.
  */
-#include <litmus/rt_param.h>
-
-#include <sys/types.h>
+#include "litmus/rt_param.h"
 
 #include "cycles.h" /* for null_call() */