[Haskell-cafe] GHC 7.8 undefined symbol

Brandon Allbery allbery.b at gmail.com
Fri Sep 4 19:12:20 UTC 2015

On Fri, Sep 4, 2015 at 3:06 PM, Sven Bartscher <
sven.bartscher at weltraumschlangen.de> wrote:

> I recently installed a library (namely Hpysics, not on hackage) with
> shared libraries (they were on by default).
> When trying to do some stuff with the library (program attached), I get
> a bunch of undefined symbol errors like this:
> $ ghc --make Main.hs
> Linking Main ...
> /home/sven/.cabal/lib/i386-linux-ghc-7.8.4/Hpysics-0.0/libHSHpysics-0.0.a(Body.o):(.text+0x46e):
> undefined reference to
> `Hpysicszm0zi0_PhysicsziHpysicsziBoundingSphere_constructBoundingSpherezugo_info'
> /home/sven/.cabal/lib/i386-linux-ghc-7.8.4/Hpysics-0.0/libHSHpysics-0.0.a(Body.o):(.text+0x4f9):

Physics.Hpysics.BoundingSphere is missing from extra-modules in Hpysics'
cabal file.

brandon s allbery kf8nh                               sine nomine associates
allbery.b at gmail.com                                  ballbery at sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
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