diff --git a/builtin.c b/builtin.c
index aef5b2c2d4..b725d8b968 100644
--- a/builtin.c
+++ b/builtin.c
@@ -3,15 +3,15 @@
 #include "iseq.h"
 #include "builtin.h"
 
-#ifdef CROSS_COMPILING
+#include "builtin_binary.inc"
+
+#ifndef BUILTIN_BINARY_SIZE
 
 #define INCLUDED_BY_BUILTIN_C 1
 #include "mini_builtin.c"
 
 #else
 
-#include "builtin_binary.inc"
-
 static const unsigned char *
 bin4feature(const struct builtin_binary *bb, const char *feature, size_t *psize)
 {
diff --git a/common.mk b/common.mk
index 2732a1ea4a..070ca91f75 100644
--- a/common.mk
+++ b/common.mk
@@ -1301,9 +1301,12 @@ preludes: {$(srcdir)}golf_prelude.c
 	$(ECHO) making $@
 	$(Q) $(BASERUBY) $(tooldir)/mk_builtin_loader.rb $<
 
-builtin_binary.inc: $(PREP) $(BUILTIN_RB_SRCS) $(srcdir)/template/builtin_binary.inc.tmpl
+$(BUILTIN_BINARY:yes=built)in_binary.inc: $(PREP) $(BUILTIN_RB_SRCS) $(srcdir)/template/builtin_binary.inc.tmpl
 	$(Q) $(MINIRUBY) $(tooldir)/generic_erb.rb -o $@ \
-		$(srcdir)/template/builtin_binary.inc.tmpl -- --cross=$(CROSS_COMPILING)
+		$(srcdir)/template/builtin_binary.inc.tmpl
+
+$(BUILTIN_BINARY:no=builtin)_binary.inc:
+	$(Q) echo> $@ // empty $(@F)
 
 $(BUILTIN_RB_INCS): $(top_srcdir)/tool/mk_builtin_loader.rb
 
diff --git a/configure.ac b/configure.ac
index bf6d9af1f1..e0057d974f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1489,6 +1489,25 @@ RUBY_CHECK_SIZEOF(float)
 RUBY_CHECK_SIZEOF(double)
 RUBY_CHECK_SIZEOF(time_t, [long "long long"], [], [@%:@include <time.h>])
 RUBY_CHECK_SIZEOF(clock_t, [], [], [@%:@include <time.h>])
+AC_SUBST(X_BUILTIN_BINARY, yes)
+AS_IF([test "$cross_compiling" = yes],
+[dnl miniruby cannot run if cross compiling
+    X_BUILTIN_BINARY=no
+],
+[
+    AS_CASE([ac_cv_sizeof_voidp],
+    [[1-9]*], [dnl fixed value
+    ],
+    [
+        AC_CACHE_CHECK([word size], [rb_cv_word_size],
+            [for w in 4 8; do
+                AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@if SIZEOF_VOIDP != ${w}
+                @%:@error SIZEOF_VOIDP
+                @%:@endif]])], [rb_cv_word_size=${w}; break])
+            done])
+        AS_IF([test -z $rb_cv_word_size], [X_BUILTIN_BINARY=no])
+    ])
+])
 
 AC_CACHE_CHECK(packed struct attribute, rb_cv_packed_struct,
     [rb_cv_packed_struct=no
@@ -4482,7 +4501,7 @@ guard=INCLUDE_RUBY_CONFIG_H
 {
   echo "#ifndef $guard"
   echo "#define $guard 1"
-  grep -v "^#define PACKAGE_" confdefs.h
+  sed "/^@%:@define PACKAGE_/d;s/  *$//" confdefs.h
   echo "#endif /* $guard */"
 } | tr -d '\015' |
 (
diff --git a/template/Makefile.in b/template/Makefile.in
index 93fa02d9d7..9e553affac 100644
--- a/template/Makefile.in
+++ b/template/Makefile.in
@@ -65,6 +65,7 @@ rubyarchhdrdir = @rubyarchhdrdir@
 ruby_version = @ruby_version@
 RUBY_VERSION_NAME = @RUBY_VERSION_NAME@
 UNIVERSAL_ARCHNAMES = @UNIVERSAL_ARCHNAMES@
+BUILTIN_BINARY = @X_BUILTIN_BINARY@
 
 TESTUI = console
 TESTS =
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index ab1e46a4b0..3d4bbc87e8 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -433,8 +433,10 @@ THREAD_IMPL_SRC = thread_$(THREAD_MODEL).c
 
 !if "$(CROSS_COMPILING)" == "yes"
 PREP          = $(arch)-fake.rb
+BUILTIN_BINARY = no
 !else
 PREP          = miniruby$(EXEEXT)
+BUILTIN_BINARY = yes
 !endif
 
 !if !defined(EXTSTATIC)