What happened to -optdep option?

[Bertram Felgenhauer]

Volker Wysk wrote:
> Hello!
> 
> I'm using GHC 7.10.3 after an upgrade. I have the following in my Makefile:
> 
> depend_mod :: lib/abh
> 	ghc -M $(CFLAGS_GHC_0) -dep-makefile -optdepbuild/depend.tmp -dep-suffix "p_" 

You should drop the -optdep here

> \
> 	       $(foreach m, $(MOD_HS) $(PROG_HS), src/$(m).hs) \
> 	       $(foreach m, $(MOD_CHS) $(PROG_CHS), build/$(m).hs)
>         ...
>         
> This used to work. The previous GHC version was 7.8.

As a side effect of finally removing the -optdep-f flag,

  https://ghc.haskell.org/trac/ghc/ticket/2773
  (another relevant commit is  994d5e3cfc32cb624b63683205dd8fd876171d0c)

the code that strips -optdep from the filename, which was required to
make  -optdep-f -optdepfoo  work, also got removed. The fact that
-dep-makefile continued to strip -optdep was an accident in my view.

Cheers,

Bertram