#437: Recompilation check should include flags
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Reporter: simonpj | Owner: dterei
Type: bug | Status: new
Priority: low | Milestone: 7.2.1
Component: Compiler | Version: 6.4.1
Resolution: None | Keywords:
Testcase: mod175 | Blockedby:
Difficulty: Unknown | Os: Unknown/Multiple
Blocking: | Architecture: Unknown/Multiple
Failure: Other |
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Comment(by simonmar):
Replying to [comment:20 igloo]:
> Flag ordering is important (e.g. `-O0 -O` is not the same as `-O -O0`).
Also, some flags are equivalent to others.
You're right, literally sorting the flags would be wrong. I had in mind
serialising DynFlags, but making sure that the DynFlag list is sorted to
normalise it, and omitting things that don't affect the compilation
result, plus throwing in a few things that aren't in DynFlags (static
flags).
> Rather than storing the set of flags (`-O` etc), it might be better to
use the set of enabled `DynFlag`s (`Opt_Specialise` etc) and
`ExtensionFlag`s.
Right.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/437#comment:21>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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