Adjust to the moving target called the C++ standard. Apparently nowadays it's not allowed to define an explicit copy constructor but not an assignment operator. Consequently, defining the explicit copy constructor in terms of the implicit/automatic assignment operator for general convenience no longer works. Add assignment operators. Caution: not tested with the IBM compiler, but there's no particular reason it shouldn't work.

--- a/anagram/support/cint.h	Mon May 30 23:32:56 2022 -0400
+++ b/anagram/support/cint.h	Mon May 30 23:46:22 2022 -0400
@@ -38,6 +38,12 @@
   }
 #endif
 
+  cint operator = (cint r) {
+     x = r.x;
+     y = r.y;
+     return r;
+  }
+
   int operator == (const cint r) const { return (x == r.x && y == r.y); }
   int operator != (const cint r) const { return (x != r.x || y != r.y); }
   cint operator + (cint r) const {