configure: Don't allow using config.h when cross-compiling.

configure.ac

@@ -2715,9 +2715,10 @@ dnl **** Generate output files ****
 
 AH_TOP([#ifndef __WINE_CONFIG_H
 #define __WINE_CONFIG_H
-#ifndef WINE_CROSS_PE])
-AH_BOTTOM([#endif /* WINE_CROSS_PE */
-#endif /* __WINE_CONFIG_H */])
+#ifdef WINE_CROSS_PE
+#error config.h should not be used when cross-compiling
+#endif])
+AH_BOTTOM([#endif /* __WINE_CONFIG_H */])
 
 AC_CONFIG_COMMANDS([include/stamp-h], [echo timestamp > include/stamp-h])
 AS_ECHO_N("creating Makefile rules...") >&AS_MESSAGE_FD

dlls/winecrt0/register.c

@@ -18,7 +18,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
-#include "config.h"
 #include <stdarg.h>
 
 #define COBJMACROS

dlls/winecrt0/stub.c

@@ -18,8 +18,6 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
-#include "config.h"
-
 #include <stdarg.h>
 #include "windef.h"
 #include "winbase.h"

include/config.h.in

@@ -2,7 +2,9 @@
 
 #ifndef __WINE_CONFIG_H
 #define __WINE_CONFIG_H
-#ifndef WINE_CROSS_PE
+#ifdef WINE_CROSS_PE
+#error config.h should not be used when cross-compiling
+#endif
 
 /* Define to the file extension for executables. */
 #undef EXEEXT
@@ -1475,5 +1477,4 @@
 #undef inline
 #endif
 
-#endif /* WINE_CROSS_PE */
 #endif /* __WINE_CONFIG_H */