fatal error: codec.h: No such file or directory

[joehealy]

Compiling emailparse seems to give the error:

[10 of 10] Compiling Network.Mail.Parse ( src/Network/Mail/Parse.hs, dist/build/Network/Mail/Parse.p_o )

csrc/codec.c:7:10: error:
fatal error: codec.h: No such file or directory
#include "codec.h"
^~~~~~~~~
|
7 | #include "codec.h"
| ^
compilation terminated.
cc' failed in phase C Compiler'. (Exit code: 1)

Any hints as to what this missing file belongs to?

Can you fix this issue ?
I got it ...

[mkawalec]

sure thing. Which GHC version are you using @ghost ?

[exaexa]

I had the same bug on 8.0.2 (debian buster, ghc from apt packages), 8.2.x from stack works okay (going to verify if 8.2.x from packages will work too).

A quick workaround is to use a version several commits back (I guess it's 0.2.0.7).

[mkawalec]

I can't actually get the library to build with cabal (I guess stack insulated me from the fun of haskell packages on arch in particular and cabal in general), does the latest version through stack work for you? I've updated the resolver.

[exaexa]

Works through stack. I wasn't able to get non-stack 8.2.x yet but judging from the error message (it's only a missing include path in gcc parameters) it's a ghc version problem. Which is a pity, it's the only reason why it doesn't work with 8.0.2 cabal. I'll try to get some quick fix for that.

[exaexa]

Interesting, the build works manually from git now even with cabal (I upgraded from ghc-8.0 to 8.2 and cabal 1.24 to 2.0), but fails in the same way when I let cabal download the emailparse package (0.2.0.10) from hackage.

Is there any debug info I can produce to help fixing this? (I'm quite new in debugging such stuff)

[mkawalec]

I'm unsure myself, but a rather quick fix could be to use http://hackage.haskell.org/package/base64-bytestring-1.0.0.1/docs/Data-ByteString-Base64.html or similar for base64 encode/decode instead of that rather ugly C

[tysonzero]

It seems like a quick fix is just adding codec.h to c-sources.