On 16 September 2011 22:40, D.V. <dav.v...@gmail.com> wrote:
> Bonsoir List,
>
> I'm trying to follow the instructions from
> http://www.haskell.org/haskellwiki/WxHaskell/Development/Environment
> however it's not working.
>
> - cabal-dev add-source wxdirect works fine
> - cabal-dev add-source wxcore has an error
> - cabal-dev add-source wx works fine
>
> wxcore error:
> [...]
> Configuring wxcore-0.13.1...
> setup: Missing dependencies on foreign libraries:
> * Missing C libraries: wx_baseu-2.8, wx_baseu_net-2.8, wx_baseu_xml-2.8,
> wx_gtk2u_core-2.8, wx_gtk2u_adv-2.8, wx_gtk2u_html-2.8, wx_gtk2u_qa-2.8,
> wx_gtk2u_xrc-2.8, wx_gtk2u_aui-2.8, wx_gtk2u_richtext-2.8
> This problem can usually be solved by installing the system packages that
> provide these libraries (you may need the "-dev" versions). If the
> libraries
> are already installed but in a non-standard location then you can use the
> flags --extra-include-dirs= and --extra-lib-dirs= to specify where they
> are.
> Building source dist for wxcore-0.13.1...
> Preprocessing library wxcore-0.13.1...
> Source tarball created: dist/wxcore-0.13.1.tar.gz
>
> I'm on kubuntu 11.04.
> I have a fresh ghc7.0.1 install.
> cabal install wx worked fine; I am able to compile and run wxHaskell
> programs.
>
> running with verbose=3 tells me a bunch of
> /usr/bin/gcc returned ExitFailure 1 with error message:
> /usr/bin/ld: cannot find -lwxmsw28ud_media
> /usr/bin/ld: cannot find -lwxmsw28ud_richtext
> /usr/bin/ld: cannot find -lwxmsw28ud_aui
> /usr/bin/ld: cannot find -lwxmsw28ud_xrc
>
Thanks for posting so much information, this is very similar to a problem I
had with the latest from code.haskell.org.
You'll note that those missing libraries contain "msw", i.e. "Microsoft
Windows", which us Linux users certainly shouldn't be trying to link
against.
collect2: ld returned 1 exit status
>
> a search on google brings a few pages, however I still can't figure
> out how to make it work.
>
> Here's what libraries I have that contain 'wx', I've no idea how to
> get the missing ones.
>
> $ find /usr -name '*wx*so'
> /usr/lib/libwxsvg.so
> /usr/lib/libwx_gtk2u_ogl-2.8.so
> /usr/lib/libwx_gtk2u_xrc-2.8.so
> /usr/lib/libwx_gtk2u_richtext-2.8.so
> /usr/lib/libwx_gtk2u_gizmos-2.8.so
> /usr/lib/libwx_gtk2u_fl-2.8.so
> /usr/lib/libwx_gtk2u_html-2.8.so
> /usr/lib/libwx_baseu_net-2.8.so
> /usr/lib/libwx_gtk2u_aui-2.8.so
> /usr/lib/libwx_gtk2u_stc-2.8.so
> /usr/lib/libwx_baseu_xml-2.8.so
> /usr/lib/libwx_gtk2u_core-2.8.so
> /usr/lib/libwx_gtk2u_gizmos_xrc-2.8.so
> /usr/lib/libwx_gtk2u_qa-2.8.so
> /usr/lib/libwx_gtk2u_adv-2.8.so
> /usr/lib/libwx_baseu-2.8.so
> /usr/lib/libwx_gtk2u_svg-2.8.so
> /usr/lib/libwx_gtk2u_gl-2.8.so
> /usr/lib/libwx_gtk2u_plot-2.8.so
>
> Please help !
>
> David.
>
I see from this you're on wx 2.8 for GTK, and that's okay, we just need to
remove those non-Linux libraries, and I'm afraid that involves some hacking
(I'm working on a patch to clean this up, I need to get it to the list):
You'll need to edit wxcore/Setup.hs thus:
On or around line 51 you'll see:
> let extra_wx_libs = if ver == "9"
[BUNCH OF LIBRARY INCLUDES]
Now I use wx 2.9 for GTK, and I've replaced the include list with these:
> [ "-lwx_gtk2u_xrc-2.9", "-lwx_gtk2u_stc-2.9",
"-lwx_gtk2u_aui-2.9"
> , "-lwx_gtk2u_ribbon-2.9",
"-lwx_gtk2u_propgrid-2.9", "-lwx_gtk2u_richtext-2.9"
> , "-lwx_gtk2u_gl-2.9", "-lstdc++"]
Hopefully you can adjust this for your needs, and it would be great if you
could send your list back so I can include it in my patch.
For the curious:
Wondering how the library can still compile with some includes missing?
(I believe, perhaps someone can confirm...)
If you inspect some of the .cpps under wxcore/src/cpp/ you'll find they do a
bunch of ifdefs (for example ifdef wxUSE_MEDIACTRL).
Where do these defines come from?
Well in Setup.hs you'll find this:
> (readProcess "wx-config" ["--libs", "--cppflags"] "")
And that "cppflags" flag will print out (or in our case, on Linux, not print
out) things like (wxUSE_MEDIACTRL), these are passed to "ccOptions" (from
Distribution.InstalledPackageInfo), and the build system then passes these
to the CPP linker.
Hope this helps,
Dave
>
>
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