-#
-# Note: the slowness of the non optimized compiler compiling itself usually
-# outweighs the time gains in not doing optimizations, therefore a
-# full bootstrap takes much more time with `optimize` set to false.
+# WARNING: Building with optimize = false is NOT SUPPORTED. Due to bootstrapping,
+# building without optimizations takes much longer than optimizing. Further, some platforms
+# fail to build without this optimization (c.f. #65352).