1. 24 Jun, 2009 1 commit
  2. 23 Jun, 2009 1 commit
    • Simon Marlow's avatar
      Optimise the %.hi : %.o rule · 0fb9ad3a
      Simon Marlow authored
      Previously this rule had a sanity check for the existence of the .o
      file.  However, the sanity check is expensive, especially on Windows,
      because it requires spawning a shell.  So now we use an empty command
      here.
      
      This change reduced the time to do 'make' in an up-to-date tree on
      Windows from 33s to 16s for me.  (the actual saving depends on how
      much rebuilding you've been doing, and how many .hi files are older
      than their .o files).
      
      The comments in this file now describe various versions of the rule
      that don't work.
      0fb9ad3a
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