;; Only when building with more recent GCC
             (when #false
               ;; GCC 2.95 is fine with these comments, but GCC 4.6 is not.
               (substitute* "ghc/rts/universal_call_c.S"
                 (("^# .*") ""))
               ;; CLK_TCK has been removed
               (substitute* "ghc/interpreter/nHandle.c"
                 (("CLK_TCK") "sysconf(_SC_CLK_TCK)")))

Generated by Ricardo Wurmus using scpaste at Thu Feb 3 09:33:50 2022. CET. (original)