-fexternal-interpreter with external C shared library leads to undefined symbol during template haskell phase

I'm building the following Foo.hs program using the hmatrix-gsl library:

{-# LANGUAGE TemplateHaskell #-}

import Numeric.GSL.Integration

main = do
  print $([| 10 |])
  print $ integrateQNG 1 (\x -> x) 0 1

I observes undefined symbols during the template haskell phase when using -fexternal-interpreter:

Without -fexternal-interpreter:

$ ghc -package hmatrix-gsl Foo.hs
[1 of 1] Compiling Main             ( Foo.hs, Foo.o )
Linking Foo ...

[nix-shell:~/bug_report_external]$ ./Foo 
10
(0.5,5.551115123125783e-15)

But with -fexternal-interpreter:

$ ghc -fexternal-interpreter -package hmatrix-gsl Foo.hs
[1 of 1] Compiling Main             ( Foo.hs, Foo.o )
<command line>: can't load .so/.DLL for: /nix/store/6dhcmmfgy5fa0p3d235yaz4qfx8jhpar-gsl-2.5/lib/libgsl.so (/nix/store/6dhcmmfgy5fa0p3d235yaz4qfx8jhpar-gsl-2.5/lib/libgsl.so: undefined symbol: cblas_ctrmv)

I suspect that it happen during the template haskell phase because I cannot observe this issue without template haskell.

I can observe this issue with a few other libraries, I used hmatrix-gsl in this example because it is on hackage. Actually, you can even reduce the file to:

{-# LANGUAGE TemplateHaskell #-}

main = do
  print $([| 10 |])

and get the same error as long as you have -package hmatrix-gsl in your command line.

I generate the build environment with this nix file:

with import (fetchTarball {
   # 25/01/2019
   url = https://github.com/nixos/nixpkgs/archive/11cf7d6e1ff.tar.gz;
   sha256 = "0zcg4mgfdk3ryiqj1j5iv5bljjvsgi6q6j9z1vkq383c4g4clc72";
   }) {};
mkShell {
  buildInputs = [(haskellPackages.ghcWithPackages(p: [p.hmatrix-gsl]))];
}

It setups ghc-8.6.3 with hmatrix-gsl-0.19.0.1 (the latest on hackage).

Note that hmatrix-gsl depends on library gsl which have a weird symbol setup. The main library file libgsl does not contain the cbal_ctrmv symbol which is contained in another library libgslcbal which is not a dependency of the shared object libgsl.so.

library gslcblas is listed in extra-libraries of the hmatrix-gsl package:

ghc-pkg field hmatrix-gsl extra-libraries
extra-libraries:
    gsl gslcblas m

Trac metadata

Trac field	Value
Version	8.6.3
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
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