[ ghc-Bugs-653009 ] com. line args not honoured for recompil

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Bugs item #653009, was opened at 2002-12-12 23:30
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Category: Compiler
Group: None
>Status: Closed
>Resolution: Wont Fix
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: com. line args not honoured for recompil

Initial Comment:
I compiled a file with a standard compile and link and some flags, include -fallow-overlapping-isntances.  I was interested in 
whether overlapping instances were really required, so I recompiled -- without modifying the file -- without 
-fallow-overlapping-instances.  I got the "compilation IS NOT required" message, clearly erroneous.

Suggestion: flag configuration / compiler state stored in generated code and checked on recompile.

My email is nalexander at amavi.com.

Thanks,
Nick


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>Comment By: Simon Marlow (simonmar)
Date: 2002-12-13 11:07

Message:
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user_id=48280

Yes, but (a) make doesn't know that you've changed the 
options, (b) sometimes you want to change options without 
recompiling, eg. adding/removing -O, etc. and (c) it's extra 
work for us to implement :-)

Workaround: use -no-recomp


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