--- configure.orig	2023-02-26 18:46:38 UTC
+++ configure
@@ -6741,7 +6741,7 @@ fi
 
 
 
-printf "%s\n" "#define MAKE_CXX \"$CXX\"" >>confdefs.h
+printf "%s\n" "#define MAKE_CXX \"c++\"" >>confdefs.h
 
 
 # Configure gnulib
