[GHC] #15261: Show -with-rtsopts options in runtime's --info

[GHC]

#15261: Show -with-rtsopts options in runtime's --info
-------------------------------------+-------------------------------------
           Reporter:  osa1           |             Owner:  (none)
               Type:  feature        |            Status:  new
  request                            |
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 As far as I know currently we don't have a way to show `-with-rtsopts`
 options provided when compiling an executable. It'd be useful if `--info`
 showed this. Some use cases:

 - When you have multiple binaries of the same program you can see how each
 one is compiled. Useful when debugging.
 - Sometimes we instruct users saying "compile with this and run with
 that". This steps becomes easier with `-with-rtsopts` because with that
 the user doesn't have to pass runtime parameters. But currently we don't
 have an easy way check if the users did it right. If `+RTS --info` showed
 this information we could say "look at the info, you should see this and
 that".

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15261>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler