5 files changed, 11 insertions, 8 deletions
diff --git a/Build/source/texk/web2c/luatexdir/ChangeLog b/Build/source/texk/web2c/luatexdir/ChangeLog
index d9988d63f3b..f068a084c8e 100644
--- a/Build/source/texk/web2c/luatexdir/ChangeLog
+++ b/Build/source/texk/web2c/luatexdir/ChangeLog
@@ -2,6 +2,11 @@
 
 	* lua/lcallbacklib.c, lua/luainit.w: Replace index() => strchr().
 
+	* ptexlib.h: More general cases for not been included first.
+
+	* lang/hyphen.h: Do not '#include "ptexlib.h"'.
+	* lang/hyphen.w: Include ptexlib.h instead of lang/hyphen.h.
+
 2013-06-28  Karl Berry  <karl@tug.org>
 
 	* ptexlib.h: complain if various common things are #defined;
diff --git a/Build/source/texk/web2c/luatexdir/lang/hyphen.h b/Build/source/texk/web2c/luatexdir/lang/hyphen.h
index 8e5e5785c93..669f2258f7a 100644
--- a/Build/source/texk/web2c/luatexdir/lang/hyphen.h
+++ b/Build/source/texk/web2c/luatexdir/lang/hyphen.h
@@ -42,8 +42,6 @@ extern "C" {
 
     typedef struct _HyphenDict HyphenDict;
 
-#  include "ptexlib.h"
-
     HyphenDict *hnj_hyphen_new(void);
     void hnj_hyphen_load(HyphenDict * dict, const unsigned char *fn);
     void hnj_hyphen_free(HyphenDict * dict);
diff --git a/Build/source/texk/web2c/luatexdir/lang/hyphen.w b/Build/source/texk/web2c/luatexdir/lang/hyphen.w
index 99825638fac..b39993fd4be 100644
--- a/Build/source/texk/web2c/luatexdir/lang/hyphen.w
+++ b/Build/source/texk/web2c/luatexdir/lang/hyphen.w
@@ -42,7 +42,7 @@ static const char _svn_version[] =
     "$Id: hyphen.w 4599 2013-03-19 15:41:07Z taco $ "
     "$URL: https://foundry.supelec.fr/svn/luatex/tags/beta-0.76.0/source/texk/web2c/luatexdir/lang/hyphen.w $";
 
-#include "lang/hyphen.h"        /* includes ptexlib.h */
+#include "ptexlib.h"
 
 #include <stdlib.h>             /* for NULL, malloc */
 #include <stdio.h>              /* for fprintf */
diff --git a/Build/source/texk/web2c/luatexdir/luatex.h b/Build/source/texk/web2c/luatexdir/luatex.h
index 592a49a19f7..e5e0e226e5c 100644
--- a/Build/source/texk/web2c/luatexdir/luatex.h
+++ b/Build/source/texk/web2c/luatexdir/luatex.h
@@ -1,7 +1,7 @@
 /* luatex.h
 
    Copyright 1996-2006 Han The Thanh <thanh@pdftex.org>
-   Copyright 2006-2012 Taco Hoekwater <taco@luatex.org>
+   Copyright 2006-2013 Taco Hoekwater <taco@luatex.org>
 
    This file is part of LuaTeX.
 
@@ -102,8 +102,6 @@ extern void ipcpage(int);
 
 extern boolean input_line(FILE *);
 
-#  include "ptexlib.h"
-
 #  define COPYRIGHT_HOLDER "Taco Hoekwater"
 #  define AUTHOR NULL
 #  define PROGRAM_HELP LUATEXHELP
diff --git a/Build/source/texk/web2c/luatexdir/ptexlib.h b/Build/source/texk/web2c/luatexdir/ptexlib.h
index d983011771f..f313e6c03e1 100644
--- a/Build/source/texk/web2c/luatexdir/ptexlib.h
+++ b/Build/source/texk/web2c/luatexdir/ptexlib.h
@@ -23,7 +23,10 @@
 #ifndef PTEXLIB_H
 #  define PTEXLIB_H
 
-#if defined (_OFF_T_DEFINED) || defined (EOF) || defined (assert) || defined (_FEATURES_H)
+/* Try to detect if a system header has already been included.  */
+#if (defined(__linux__) && defined(_FEATURES_H)) || \
+    (defined(_MSC_VER) && (defined(_INC_CRTDEFS) || defined(_OFF_T_DEFINED))) || \
+    (defined(__MINGW32__) && defined(__MINGW_H))
 ptexlib.h must be included first!!!
 #endif
 
@@ -32,7 +35,6 @@ ptexlib.h must be included first!!!
 #endif
 
 /* WEB2C macros and prototypes */
-#  define EXTERN extern
 #  include "luatex.h"
 
 #  include "lib/lib.h"