https://git.ruby-lang.org/ruby.git/commit/?id=3a575d13d5

From 3a575d13d55751c6b5f34d26a8d87a4c449ddaeb Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 6 Sep 2022 13:45:45 +0900
Subject: Ensure BASERUBY when cross-compiling

---
 configure.ac       | 1 +
 win32/Makefile.sub | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5b0aa218d9..f981d1aa70 100644
--- a/configure.ac
+++ b/configure.ac
@@ -76,6 +76,7 @@ AS_IF([test "$HAVE_BASERUBY" != no -a "`RUBYOPT=- $BASERUBY --disable=gems -e 'p https://github.com/ruby/ruby/blob/trunk/configure.ac#L76
     HAVE_BASERUBY=no
 ])
 AS_IF([test "$HAVE_BASERUBY" = no], [
+    AS_IF([test "$cross_compiling" = yes], [AC_MSG_ERROR([executable host ruby is required for cross-compiling])])
     BASERUBY="echo executable host ruby is required.  use --with-baseruby option.; false"
 ])
 AC_SUBST(BASERUBY)
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index 2910901d7e..b3d0a2f76e 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -24,6 +24,14 @@ REVISION_FORCE = PHONY https://github.com/ruby/ruby/blob/trunk/win32/Makefile.sub#L24
 
 !ifndef CROSS_COMPILING
 CROSS_COMPILING = no
+!else if "$(CROSS_COMPILING)" == "yes"
+! if "$(HAVE_BASERUBY)" != "yes"
+!   error executable host ruby is required for cross-compiling
+! endif
+!else
+! if "$(CROSS_COMPILING)" != "no"
+!   error Bad CROSS_COMPILING
+! endif
 !endif
 !ifndef win_srcdir
 win_srcdir = $(srcdir)/win32
-- 
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