[GHC] #11281: Way to run --make and -M simultaneously

[GHC]

#11281: Way to run --make and -M simultaneously
-------------------------------------+-------------------------------------
        Reporter:  ezyang            |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  7.11
      Resolution:                    |             Keywords:  easy
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by thomie):

 Equivalent `gcc` (5.2.0) flag:
 {{{
        -MD -MD is equivalent to -M -MF file, except that -E is not
 implied.
            The driver determines file based on whether an -o option is
            given.  If it is, the driver uses its argument but with a
 suffix
            of .d, otherwise it takes the name of the input file, removes
 any
            directory components and suffix, and applies a .d suffix.

            If -MD is used in conjunction with -E, any -o switch is
            understood to specify the dependency output file, but if used
            without -E, each -o is understood to specify a target object
            file.

            Since -E is not implied, -MD can be used to generate a
 dependency
            output file as a side-effect of the compilation process.
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11281#comment:3>
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