#5584: ghc -odir is incompatible with .hs-boot files for hierarchical modules
-------------------------------+--------------------------------------------
Reporter: georgevdd | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.0.4 | Keywords:
Testcase: | Blockedby:
Os: Linux | Blocking:
Architecture: x86_64 (amd64) | Failure: Compile-time crash
-------------------------------+--------------------------------------------
== Steps to reproduce ==
1) Adapt the example of
[http://www.haskell.org/ghc/docs/latest/html/users_guide/separate-
compilation.html#mutual-recursion how to compile mutually recursive
modules] so that the modules involved have hierarchical names:
File S/A.hs:
{{{
module S.A where
import S.B( TB(..) )
newtype TA = MkTA Int
f :: TB -> TA
f (MkTB x) = MkTA x
}}}
File S/A.hs-boot:
{{{
module S.A where
newtype TA = MkTA Int
}}}
File S/B.hs:
{{{
module S.B where
import {-# SOURCE #-} S.A( TA(..) )
data TB = MkTB !Int
g :: TA -> TB
g (MkTA x) = MkTB x
}}}
2) Compile as the example suggests, but with -odir:
{{{
mkdir out
ghc -odir out -c S/A.hs-boot
}}}
== Expected behaviour ==
GHC silently creates the directory out/S and then emits the file A.o-boot
in that directory.
== Observed behaviour ==
GHC produces the error message:
{{{
touch: cannot touch `out/S/A.o-boot': No such file or directory
}}}
Note: this happens with ghc --make as well.
== Workaround ==
Create the directory out/S beforehand.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5584>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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