[Haskell-cafe] Using GHC option '-optl-static' causes segfault

[Vanessa McHale]

I’ve run into that before; I think it arises because you can’t link statically against libc? In any case, trying to use network code fails with a segfault. 

I think it is hard to work around; you need to build GHC against musl and then use that to compile your program. 

Cheers,
Vanessa 

> On Mar 9, 2020, at 9:32 PM, Nutr1t07 <nutr1t07 at outlook.com> wrote:
> 
> Hi,
> 
> I added '-optl-static' in GHC option to make my program compiled statically. When I compiled the following code using 'stack build':
> 
> -- Main.hs
> 
> {-# LANGUAGE OverloadedStrings #-}
> module Main where
> 
> import Web.Scotty                     as Scotty
> import Network.Wreq                as Wreq
> import Control.Monad.IO.Class
> 
> main :: IO ()
> main = scotty 8443 $ do
>   Scotty.get (literal "/") $ do
>     _ <- liftIO $ Wreq.get "https://www.google.com/"
>     html "Could not see this"
> 
> --
> 
> Ran the compiled program and accessing "http://localhost:8443" would raise a segmentation fault.
> 
> Here are what in my 'ghc-option':
> 
>     ghc-options:
>     - -optl-static
>     - -threaded
>     - -rtsopts
>     - -with-rtsopts=-N
> 
> Then I removed the '-optl-static', compiled it, and the program ran well.
> 
> It seems that it something has to do with glibc. What can I do with this problem?
> 
> Regards
> 
> PS. I'm using GHC 8.8.2, stack 2.1.3
> 
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