configure.ac: add --disable-fiber-coroutine option

* configure.ac: add --disable-fiber-coroutine option, and disable
  it on x86-mingw32 for now.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65899 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Makefile.in

@@ -144,6 +144,7 @@ XRUBY_RUBYHDRDIR = @XRUBY_RUBYHDRDIR@
 BOOTSTRAPRUBY = @BOOTSTRAPRUBY@
 
 COROUTINE_H = @X_FIBER_COROUTINE_H@
+COROUTINE_OBJ = $(COROUTINE_H:.h=.@OBJEXT@)
 
 #### End of system configuration section. ####
 

common.mk

@@ -138,6 +138,7 @@ COMMONOBJS    = array.$(OBJEXT) \
 		vm_backtrace.$(OBJEXT) \
 		vm_dump.$(OBJEXT) \
 		vm_trace.$(OBJEXT) \
+		$(COROUTINE_OBJ) \
 		$(DTRACE_OBJ) \
 		$(BUILTIN_ENCOBJS) \
 		$(BUILTIN_TRANSOBJS) \
@@ -895,8 +896,9 @@ strstr.$(OBJEXT): {$(VPATH)}strstr.c
 nt.$(OBJEXT): {$(VPATH)}nt.c
 ia64.$(OBJEXT): {$(VPATH)}ia64.s
 	$(CC) $(CFLAGS) -c $<
-$(COROUTINE_H:.h=).$(OBJEXT): {$(VPATH)}$(COROUTINE_H:.h=).$(ASMEXT)
-$(COROUTINE_H:.h=).$(OBJEXT): $(COROUTINE_H:Context.h=.time)
+.coroutine_obj $(COROUTINE_OBJ): \
+	{$(VPATH)}$(COROUTINE_H:.h=).$(ASMEXT) \
+	$(COROUTINE_H:Context.h=.time)
 $(COROUTINE_H:Context.h=.time):
 	$(Q) $(MAKEDIRS) $(@D)
 	@exit > $@

configure.ac

@@ -963,6 +963,7 @@ main()
 		AS_IF([test "$target_cpu" = x64], [
 		    ac_cv_func___builtin_setjmp=no
 		    ac_cv_func_round=no
+		    rb_cv_fiber_coroutine=no # TODO: Enable this after AppVeyor msys2 build succeeds
 		])
 		ac_cv_func_tgamma=no
 		rb_cv_negative_time_t=yes
@@ -2326,38 +2327,35 @@ AS_IF([test "${universal_binary-no}" = yes ], [
     AC_DEFINE_UNQUOTED(STACK_GROW_DIRECTION, $dir)
 ])
 
-AC_MSG_CHECKING(native coroutine implementation for ${target_cpu}-${target_os})
-AS_CASE(["$target_cpu-$target_os"],
+AC_ARG_ENABLE(fiber-coroutine,
+    AS_HELP_STRING([--disable-fiber-coroutine], [disable native coroutine implementation for fiber]),
+    [rb_cv_fiber_coroutine=$enableval])
+AS_CASE(["$rb_cv_fiber_coroutine"], [yes|''], [
+    AC_MSG_CHECKING(native coroutine implementation for ${target_cpu}-${target_os})
+    AS_CASE(["$target_cpu-$target_os"],
 	[x*64-darwin*], [
-    AC_MSG_RESULT(amd64)
-    COROUTINE_H=coroutine/amd64/Context.h
-    AC_DEFINE_UNQUOTED(FIBER_USE_COROUTINE, ["$COROUTINE_H"])
-    AC_LIBOBJ([coroutine/amd64/Context])
+	    rb_cv_fiber_coroutine=amd64
 	],
 	[x*64-linux], [
-    AC_MSG_RESULT(amd64)
-    COROUTINE_H=coroutine/amd64/Context.h
-    AC_DEFINE_UNQUOTED(FIBER_USE_COROUTINE, ["$COROUTINE_H"])
-    AC_LIBOBJ([coroutine/amd64/Context])
+	    rb_cv_fiber_coroutine=amd64
 	],
 	[*86-linux], [
-    AC_MSG_RESULT(x86)
-    COROUTINE_H=coroutine/x86/Context.h
-    AC_DEFINE_UNQUOTED(FIBER_USE_COROUTINE, ["$COROUTINE_H"])
-    AC_LIBOBJ([coroutine/x86/Context])
+	    rb_cv_fiber_coroutine=x86
+	],
+	[x64-mingw32], [
+	    rb_cv_fiber_coroutine=win64
 	],
-  # TODO: Enable this after AppVeyor msys2 build succeeds
-  # [x64-mingw32], [
-  #   AC_MSG_RESULT(win64)
-  #   COROUTINE_H=coroutine/win64/Context.h
-  #   AC_DEFINE_UNQUOTED(FIBER_USE_COROUTINE, ["$COROUTINE_H"])
-  #   AC_LIBOBJ([coroutine/win64/Context])
-  # ],
 	[*], [
-    AC_MSG_RESULT(no)
+	    rb_cv_fiber_coroutine=
 	]
-)
-AC_SUBST(X_FIBER_COROUTINE_H, [$COROUTINE_H])
+    )
+    AC_MSG_RESULT(${rb_cv_fiber_coroutine:-no})
+])
+AS_IF([test "${rb_cv_fiber_coroutine:-no}" != no], [
+    COROUTINE_H=coroutine/$rb_cv_fiber_coroutine/Context.h
+    AC_DEFINE_UNQUOTED(FIBER_USE_COROUTINE, ["$COROUTINE_H"])
+    AC_SUBST(X_FIBER_COROUTINE_H, [$COROUTINE_H])
+])
 
 AS_IF([test x"$enable_pthread" = xyes], [
     for pthread_lib in thr pthread pthreads c c_r root; do

win32/Makefile.sub

@@ -293,10 +293,10 @@ DLNOBJ = dln.obj
 COROUTINE_H = coroutine/Win64/Context.h
 !elseif "$(ARCH)" == "i386"
 COROUTINE_H = coroutine/Win32/Context.h
+!else
+COROUTINE_H =
 !endif
-!if defined(COROUTINE_H)
-MISSING = $(MISSING) $(COROUTINE_H:.h=.obj)
-!endif
+COROUTINE_OBJ = $(COROUTINE_H:.h=.obj)
 
 ARFLAGS = -machine:$(MACHINE) -out:
 LD = $(CC)