Grzegorz wrote:
Hi, I'm having problems using a package which links in foreign libraries from GHCi.
I use a .cabal file to build the package and have the following option there:
extra-libraries: stdc++ maxent z m gfortran m gcc_s
After installation, it works fine when I compile code using that package. However, when I try it from GHCi I get:
Loading package binary-0.3 ... linking ... done. Loading package filepath-1.0 ... linking ... done. Loading package haskell98 ... linking ... done. Loading package mtl-1.0.1 ... linking ... done. Loading package parsec-2.0 ... linking ... done. Loading package gramlab-lib-0.1 ... linking ... done. Loading package maxent-0.0 ... can't load .so/.DLL for: maxent (libmaxent.so: cannot open shared object file: No such file or directory)
I don't have a libmaxent.so, the maxent library in at /usr/local/lib/libmaxent.a
Can I somhow use my package with GHCi?
No, you need the .so. GHCi can't load static .a libraries. If you really have no way to get a .so, then it is possible to create a .o from the .a that GHCi can load using 'ld --whole-archive', but you're into hacker territory there. Cheers, Simon