Statically link a haskell program that uses C++ wrapper library
haskell, static-linking
Solution
The problem boils down to the fact that `gcc` doesn't actually have libstdc++, or the other core c++ libraries available to it, but `g++` does.
Asking `ghc` to use `g++` instead of `gcc` for linking should do the trick. Add the following to your cabal file as a parameter under ghc-options: `-pgml g++`. It sets the linking program to `g++` which should allow the system linker to find the libraries it needs.
Problem
I am trying to make a program that, via some of the third party modules, is dependant upon `icu` library. I suspect that the dependency is via `Network.HTTP.Conduit` but maybe via something else. Dynamically linked binary is not portable even between adjacent versions of the same distribution because libicu* are of different versions that are not compatible. So I am trying to build the program statically: ``` $ ghc --make -static -optc-static -optl-static my-prog.hs -optl-pthread ``` and I am getting a lot of errors of this kind: ``` /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libicuuc.a(dictionarydata.ao):(.data.rel.ro._ZTIN6icu_5222BytesDictionaryMatcherE[_ZTIN6icu_5222BytesDictionaryMatcherE]+0x0): undefined reference to `vtable for __cxxabiv1::__si_class_type_info' /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libicuuc.a(dictionarydata.ao):(.data.rel.ro._ZTVN6icu_5217DictionaryMatcherE[_ZTVN6icu_5217DictionaryMatcherE]+0x28): undefined reference to `__cxa_pure_virtual' collect2: error: ld returned 1 exit status ``` I believe that I have static versions of all involved libraries (`libicu`, `libstdc++`). It seems as if the linker has not been supplied with `libstdc++` (or is it `libitl`? Apparently the offending functions are defined in the latter). I tried adding the options `-optl-static-libstdc++`, `-optl-lstdc++` and `-optl-litm` to the end of the command line to no avail. What is the procedure to statically link a haskell program that is indirectly dependent on C++ support functions? I am running ``` The Glorious Glasgow Haskell Compilation System, version 7.6.3 gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1 ``` or ``` gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2 ``` Edit: I narrowed the problem to the package `Data.Text.ICU`, and here is a short program that cannot be built into a static executable: ``` {-# LANGUAGE OverloadedStrings #-} module Main where import Data.Text.ICU main = print $ toUpper Current "Hello!" ```