--- ruby-3.1.3/configure.ac.orig	2022-11-24 11:20:31.000000000 +0100
+++ ruby-3.1.3/configure.ac	2022-12-04 06:32:29.964233300 +0100
@@ -3198,7 +3198,7 @@
     [darwin*], [
 	SOEXT=dylib
 	DLEXT=bundle],
-    [cygwin*|msys*|mingw*|*djgpp*], [
+    [mingw*|*djgpp*], [
 	LOAD_RELATIVE=1
 	SOEXT=dll
 	DLEXT=so],
@@ -3529,7 +3529,7 @@
     [interix*], [
 	LIBRUBYARG_SHARED='-L. -L${libdir} -l$(RUBY_SO_NAME)'
 	],
-    [cygwin*|msys*|mingw*|mswin*], [
+    [mingw*|mswin*], [
 	LIBRUBY_RELATIVE=yes
 	])
 ], [
@@ -3978,7 +3978,7 @@
 
 RUBY_INSTALL_NAME="${ri_prefix}"'$(RUBY_BASE_NAME)'"${ri_suffix}"
 AS_CASE(["$target_os"],
-  [cygwin*|msys*|mingw*], [
+  [mingw*], [
     RUBYW_INSTALL_NAME="${ri_prefix}"'$(RUBYW_BASE_NAME)'"${ri_suffix}"
     rubyw_install_name='$(RUBYW_INSTALL_NAME)'
     ])