Failed to load interface for ‘ObjLink’

[stefan-schweiger]

When I try to install remote-debugger via cabal install remote-debugger I get the following error:

Resolving dependencies...
Configuring remote-debugger-0.2.2...
Building remote-debugger-0.2.2...
Failed to install remote-debugger-0.2.2
Build log ( /Users/Staeff/.cabal/logs/remote-debugger-0.2.2.log ):
cabal: Entering directory '/var/folders/05/zf4px1zd38b_7gv_wc34v18m0000gn/T/cabal-tmp-6680/remote-debugger-0.2.2'
Configuring remote-debugger-0.2.2...
Building remote-debugger-0.2.2...
Preprocessing executable 'remote-debugger' for remote-debugger-0.2.2...
[1 of 7] Compiling DebuggerMonad    ( src/DebuggerMonad.hs, dist/build/remote-debugger/remote-debugger-tmp/DebuggerMonad.o )

src/DebuggerMonad.hs:15:1: error:
    Failed to load interface for ‘ObjLink’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/var/folders/05/zf4px1zd38b_7gv_wc34v18m0000gn/T/cabal-tmp-6680/remote-debugger-0.2.2'
cabal: Error: some packages failed to install:
remote-debugger-0.2.2 failed during the building phase. The exception was:
ExitFailure 1

For your information I'm on GHC 8.0.1 and cabal 1.24.0.0

[mantasg]

I too get the same error

[maceopark]

Me too. I'm on this version of MacOSX and ghc. Thanks.

Darwin Nochul-ui-MacBook-Pro.local 16.0.0 Darwin Kernel Version 16.0.0: Mon Aug 29 17:56:20 PDT 2016; root:xnu-3789.1.32~3/RELEASE_X86_64 x86_64

Nochul-ui-MacBook-Pro:~ merritt$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 8.0.1

[ghost]

I found the ObjLink is a module named GHCi.ObjLink. So I modified the source code from
import ObjLink
to
import GHCi.ObjLink
and
mb_stdout <- liftIO $ ObjLink.lookupSymbol "base_GHCziIOziHandleziFD_stdout_closure" mb_stderr <- liftIO $ ObjLink.lookupSymbol "base_GHCziIOziHandleziFD_stderr_closure"
to
mb_stdout <- liftIO $ GHCi.ObjLink.lookupSymbol "base_GHCziIOziHandleziFD_stdout_closure" mb_stderr <- liftIO $ GHCi.ObjLink.lookupSymbol "base_GHCziIOziHandleziFD_stderr_closure"
And then, this error has been soluted.
But I got a new error, which means that initDynLinker's parameter must be the type of HscEnv, however there's a DynFlags type parameter was used. The DynFlags type parameter is returned from the function GHC.getSessionDynFlags. I don't know how to deal with this problem, because I'm a Haskell beginner. I searched the GHC document, and found that I can't understand the information of these functions, due to I know nothing of the knowledge of GHC.