Compilation fails under stack with missing fl_types.h about fltkhs

[deech]

Does /usr/include/FL/fl_types.h or /usr/local/include/FL/fl_types.h or <fltk-install-prefix>/FL/fl_types.h exist?

Also which Windows are you running?

[jputcu]

Yes, fl_types.h can be found in /mingw32/include, the include path given by fltk-config:

$ fltk-config --cflags
-I/mingw32/include -I/mingw32/include/FL/images -mwindows -DWIN32 -DUSE_OPENGL32 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64

I'm running Windows 7

[jputcu]

Ok, explicitly setting export CPATH=/mingw32/include and running stack install again gets me passed this error but ends with the following warning:

fltkhs-0.5.0.7: include-dirs: /mingw32/include is a relative path which makes
no sense (as there is nothing for it to be relative to). You can make paths
relative to the package database itself by using ${pkgroot}. (use --force to
override)

Now it is complaining it can't find certain 64-bit Haskell Platform directories while I'm running a x86 variant.
(Perhaps best to make that another issue)

[deech]

Oh interesting. I didn't test the install Haskell Platform, I just used the Stack Windows installer. Let me see if I can get any further.

[deech]

I just installed the latest Haskell Platform for 64 bit Windows and followed the Windows install instructions from scratch and was not able to reproduce your error. I am running 64 bit Windows 8. I'll test on Windows 7 when I can get my hands on a machine.

FWIW here's what fltk-config --cflags gave me:

-I/mingw64/include -I/mingw64/include/FL/images -mwindows -DWIN32 -DUSE_OPENGL32 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64

There's no mention of the mingw32 directory. Are you running 32-bit?

[jputcu]

Yes, for supporting older hardware I'm using the 32-bit Haskell Platform.

[jputcu]

Tried again using latest Haskell Platform 8.0.2 32-bit.
Changed the hello world yaml to use lts-8.0 and then stack install -v --system-ghc.
Everything stack builds is located in a i386-windows.
In the end it fails with:

 Building fltkhs-0.5.0.7...
    Preprocessing library fltkhs-0.5.0.7...
    C:\Users\jorisp\AppData\Local\Temp\stack6680\fltkhs-0.5.0.7\In file included from .stack-work\dist\5f9bc736\build\Graphics\UI\FLTK\LowLevel\Ask.chs.h:3:0:
    C:\Users\jorisp\AppData\Local\Temp\stack6680\fltkhs-0.5.0.7\c-src\Fl_Types.h:3:25: fatal error: FL/fl_types.h: No such file or directory
    compilation terminated.
    c2hs.exe: Error during preprocessing custom header file

[jputcu]

I see some hard coded 64-bit paths in fltkhs' Setup.hs.

[deech]

Yes, I had to do some unfortunate path munging and didn't have access to a 32 bit machine. In any case I pushed a fix to master. Do you mind pulling and trying? Thanks for your patience.

[jputcu]

Tried building and succeeded, thanks.

[deech]

Great, thanks! I'll release another version and update the various demos etc. later today.