configure.in: move FIBER_USE_NATIVE conditions

* configure.in, win32/Makefile.sub (FIBER_USE_NATIVE): move conditions
  from cont.c

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43179 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Mon Oct  7 21:03:54 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in, win32/Makefile.sub (FIBER_USE_NATIVE): move conditions
+	  from cont.c
+
 Mon Oct  7 20:29:31 2013  Zachary Scott  <e@zzak.io>
 
 	* lib/time.rb: [DOC] typo in Time.rb overview by @srt32 [Fixes GH-416]

configure.in

@@ -2355,6 +2355,13 @@ fi
 if test x"$ac_cv_header_ucontext_h" = xyes; then
     if test x"$rb_with_pthread" = xyes; then
 	AC_CHECK_FUNCS(getcontext setcontext)
+	if test x"$ac_cv_func_getcontext" = xyes -a x"$ac_cv_func_setcontext" = xyes; then
+	    AS_CASE("$target_cpu-$target_os",
+		[*-netbsd*], [],
+		[ia64-*], [], # r38766
+		[*-sunos*|*-solaris*], [], # r32408
+		[AC_DEFINE(FIBER_USE_NATIVE, 1)])
+	fi
     fi
 fi
 

cont.c

@@ -15,9 +15,6 @@
 #include "gc.h"
 #include "eval_intern.h"
 
-#if ((defined(_WIN32) && _WIN32_WINNT >= 0x0400) || (defined(HAVE_GETCONTEXT) && defined(HAVE_SETCONTEXT))) && !defined(__NetBSD__) && !defined(__sun) && !defined(__ia64) && !defined(FIBER_USE_NATIVE)
-#define FIBER_USE_NATIVE 1
-
 /* FIBER_USE_NATIVE enables Fiber performance improvement using system
  * dependent method such as make/setcontext on POSIX system or
  * CreateFiber() API on Windows.
@@ -34,7 +31,7 @@
  * are represented by stack pointer (higher bits of stack pointer).
  * TODO: check such constraint on configure.
  */
-#elif !defined(FIBER_USE_NATIVE)
+#if !defined(FIBER_USE_NATIVE)
 #define FIBER_USE_NATIVE 0
 #endif
 

win32/Makefile.sub

@@ -692,6 +692,9 @@ $(CONFIG_H): $(MKFILES) $(srcdir)/win32/Makefile.sub $(win_srcdir)/Makefile.sub
 !if "$(MACHINE)" == "x86" || "$(ARCH)" == "x64" || "$(ARCH)" == "ia64"
 #define STACK_GROW_DIRECTION -1
 !endif
+!if "$(ARCH)" != "ia64" && NTVER >= 0x0400 # r27646
+#define FIBER_USE_NATIVE 1
+!endif
 #define CANONICALIZATION_FOR_MATHN 1
 #define DEFAULT_KCODE KCODE_NONE
 !if "$(ENABLE_DEBUG_ENV)" == "yes"