Executable fails to build with --enable-executable-dynamic

[langston-barrett]

Building a simple executable against limp-cbc with cabal v2-build --enable-executable-dynamic fails.

{-# LANGUAGE DataKinds #-}
module Main where

import qualified Numeric.Limp.Program as I
import qualified Numeric.Limp.Solvers.Cbc as I (solve)
import qualified Numeric.Limp.Rep as I

simpleTest :: IO ()
simpleTest = do
  let obj :: I.Linear String String I.IntDouble 'I.KR
      obj = I.r "y" (I.R 4.5)
  let constraints = I.r1 "y" I.:<= I.conZ (I.Z 10)
  let bounds = [ I.lowerUpperR (I.R 0) "y" (I.R 5) ]
  let prog = I.maximise obj constraints bounds
  case I.solve prog of
    Left err -> error $ show err
    Right ass -> putStrLn $ show ass

main :: IO ()
main = simpleTest

executable exetest
  main-is: Main.hs
  build-depends: base, limp, limp-cbc

cabal v2-build --enable-executable-dynamic exe:exetest
Build profile: -w ghc-8.6.5 -O1
In order, the following will be built (use -v for more details):
 - limp-cbc-0.3.2.2 (exe:exetest) (first run)
Preprocessing executable 'exetest' for limp-cbc-0.3.2.2..
Building executable 'exetest' for limp-cbc-0.3.2.2..
[1 of 1] Compiling Main             ( Main.hs, /home/siddharthist/code/limp-cbc/dist-newstyle/build/x86_64-linux/ghc-8.6.5/limp-cbc-0.3.2.2/x/exetest/build/exetest/exetest-tmp/Main.dyn_o )
Linking /home/siddharthist/code/limp-cbc/dist-newstyle/build/x86_64-linux/ghc-8.6.5/limp-cbc-0.3.2.2/x/exetest/build/exetest/exetest ...
/nix/store/q354712mnkw3ky8b5crj7ir7dyv29ylj-binutils-2.31.1/bin/ld: /home/siddharthist/code/limp-cbc/dist-newstyle/build/x86_64-linux/ghc-8.6.5/limp-cbc-0.3.2.2/build/libHSlimp-cbc-0.3.2.2-inplace-ghc8.6.5.so: undefined reference to `CbcClpUnitTest(CbcModel const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int, double const*)'
/nix/store/q354712mnkw3ky8b5crj7ir7dyv29ylj-binutils-2.31.1/bin/ld: /home/siddharthist/code/limp-cbc/dist-newstyle/build/x86_64-linux/ghc-8.6.5/limp-cbc-0.3.2.2/build/libHSlimp-cbc-0.3.2.2-inplace-ghc8.6.5.so: undefined reference to `CbcOrClpParam::setDoubleParameterWithMessage(CbcModel&, double, int&)'
/nix/store/q354712mnkw3ky8b5crj7ir7dyv29ylj-binutils-2.31.1/bin/ld: /home/siddharthist/code/limp-cbc/dist-newstyle/build/x86_64-linux/ghc-8.6.5/limp-cbc-0.3.2.2/build/libHSlimp-cbc-0.3.2.2-inplace-ghc8.6.5.so: undefined reference to `ClpSimplex::loadNonLinear(void*, int&, ClpConstraint**&)'
/nix/store/q354712mnkw3ky8b5crj7ir7dyv29ylj-binutils-2.31.1/bin/ld: /home/siddharthist/code/limp-cbc/dist-newstyle/build/x86_64-linux/ghc-8.6.5/limp-cbc-0.3.2.2/build/libHSlimp-cbc-0.3.2.2-inplace-ghc8.6.5.so: undefined reference to `CbcOrClpParam::setIntParameterWithMessage(CbcModel&, int, int&)'
collect2: error: ld returned 1 exit status
`cc' failed in phase `Linker'. (Exit code: 1)

[langston-barrett]

I was able to fix this by adding the following line to the cabal file:

  pkgconfig-depends: cbc

and installing cbc and bzip2:

with import <nixpkgs> { };
mkShell {
  shellHook = ''
    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${zlib}/lib:${cbc}/lib:${bzip2}/lib
  '';
  buildInputs = [
    zlib
    haskell.compiler.ghc865
    haskellPackages.cabal-install
    haskellPackages.ghcid
    pkgconfig
    libzip
    cbc
    bzip2
  ];
}