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aditya siram

2 May 2015 2 May '15

11:24 a.m.

Hi all, I have a Haskell library I'd like to load up in GHCI along with a statically linked C library (libblah.a) . Is there any way to do this? My Googling only turns up instructions on loading a shared library (libblah.so). Thanks! -deech

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aditya siram

12 May 12 May

8:05 p.m.

Any ideas? -deech On Sat, May 2, 2015 at 10:24 AM, aditya siram wrote:

...

Hi all, I have a Haskell library I'd like to load up in GHCI along with a statically linked C library (libblah.a) . Is there any way to do this? My Googling only turns up instructions on loading a shared library (libblah.so).

Thanks! -deech

Christopher Allen

8:30 p.m.

You need a GHC built for this, I think. Using this setup: https://ghc.haskell.org/trac/ghc/ticket/5371 [callen@atlantis ~/Work/exist]$ ghci -L. -lfoo testlink.hs GHCi, version 7.10.1: http://www.haskell.org/ghc/ :? for help ghc: panic! (the 'impossible' happened) (GHC version 7.10.1 for x86_64-unknown-linux): Loading archives not supported [callen@atlantis ~/Work/exist]$ /opt/ghc/7.6.3/bin/ghci -L. -lfoo testlink.hs GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading object (static archive) ./libfoo.a ... done final link ... done [1 of 1] Compiling TestLink ( testlink.hs, interpreted ) Ok, modules loaded: TestLink. Prelude> Leaving GHCi. [callen@atlantis ~/Work/exist]$ /opt/ghc/7.8.4/bin/ghci -L. -lfoo testlink.hs GHCi, version 7.8.4: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading object (static archive) ./libfoo.a ... ghc: panic! (the 'impossible' happened) (GHC version 7.8.4 for x86_64-unknown-linux): Loading archives not supported (ditto 7.8.3) https://github.com/ghc/ghc/blob/master/compiler/ghci/Linker.hs#L444-L450 https://mail.haskell.org/pipermail/glasgow-haskell-users/2014-October/thread... Respective versions of GHC are all from hvr's Ubuntu PPA. These are the versions I have installed: ghc-7.10.1 install ghc-7.6.3 install ghc-7.8.3 install ghc-7.8.4 install Afraid I don't know much about linkers or GHC dev so that's I all I can do for you at this time. Cheers, Chris On Tue, May 12, 2015 at 7:05 PM, aditya siram wrote:

...

Any ideas? -deech

On Sat, May 2, 2015 at 10:24 AM, aditya siram wrote:

...
Hi all, I have a Haskell library I'd like to load up in GHCI along with a statically linked C library (libblah.a) . Is there any way to do this? My Googling only turns up instructions on loading a shared library (libblah.so).

Thanks! -deech

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Carter Schonwald

11:42 p.m.

adityah, if the library is cabalized, do cabal configure --extra-lib-dirs=$PATHtoArchive and assuming you have the right foreign import code, things should work fine. (or the equivalient .cabal file extra lib dirs field with can be a relative path within the package). then cabal repl should also presumably work. if you then wanna use ghci directly, try invoking cabal repl with the verbose flag (-v) to see how its setting up ghci. if your ffi bindings dont work in cabal repl, thats probably valid a bug report. (at least on some platforms) On Sat, May 2, 2015 at 11:24 AM, aditya siram wrote:

...

Hi all, I have a Haskell library I'd like to load up in GHCI along with a statically linked C library (libblah.a) . Is there any way to do this? My Googling only turns up instructions on loading a shared library (libblah.so).

Thanks! -deech

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aditya siram
Carter Schonwald
Christopher Allen