decouple internal.h headers

Saves comitters' daily life by avoid #include-ing everything from
internal.h to make each file do so instead.  This would significantly
speed up incremental builds.

We take the following inclusion order in this changeset:

1.  "ruby/config.h", where _GNU_SOURCE is defined (must be the very
    first thing among everything).
2.  RUBY_EXTCONF_H if any.
3.  Standard C headers, sorted alphabetically.
4.  Other system headers, maybe guarded by #ifdef
5.  Everything else, sorted alphabetically.

Exceptions are those win32-related headers, which tend not be self-
containing (headers have inclusion order dependencies).

1 files changed, 13 insertions, 7 deletions

diff --git a/cont.c b/cont.c
index 793bce018b..2365406d9e 100644
--- a/cont.c
+++ b/cont.c
@@ -9,19 +9,25 @@
 
 **********************************************************************/
 
-#include "internal.h"
-#include "vm_core.h"
-#include "gc.h"
-#include "eval_intern.h"
-#include "mjit.h"
-
-#include COROUTINE_H
+#include "ruby/config.h"
 
 #ifndef _WIN32
 #include <unistd.h>
 #include <sys/mman.h>
 #endif
 
+#include COROUTINE_H
+
+#include "eval_intern.h"
+#include "gc.h"
+#include "internal.h"
+#include "internal/cont.h"
+#include "internal/mjit.h"
+#include "internal/proc.h"
+#include "internal/warnings.h"
+#include "mjit.h"
+#include "vm_core.h"
+
 static const int DEBUG = 0;
 
 #define RB_PAGE_SIZE (pagesize)