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, 17 insertions, 6 deletions

diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 0cd4bdefe9..8cc47e15af 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -8,18 +8,29 @@
 
 **********************************************************************/
 
-/* finish iseq array */
-#include "insns.inc"
-#ifndef MJIT_HEADER
-#include "insns_info.inc"
-#endif
+#include "ruby/config.h"
+
 #include <math.h>
+
 #include "constant.h"
+#include "debug_counter.h"
 #include "internal.h"
+#include "internal/class.h"
+#include "internal/compar.h"
+#include "internal/hash.h"
+#include "internal/numeric.h"
+#include "internal/proc.h"
+#include "internal/random.h"
+#include "internal/variable.h"
 #include "ruby/config.h"
-#include "debug_counter.h"
 #include "variable.h"
 
+/* finish iseq array */
+#include "insns.inc"
+#ifndef MJIT_HEADER
+#include "insns_info.inc"
+#endif
+
 extern rb_method_definition_t *rb_method_definition_create(rb_method_type_t type, ID mid);
 extern void rb_method_definition_set(const rb_method_entry_t *me, rb_method_definition_t *def, void *opts);
 extern int rb_method_definition_eq(const rb_method_definition_t *d1, const rb_method_definition_t *d2);