wxhaskell-users

[wxhaskell-users] building from darcs on MacOS 10.4

[Malcolm W. <Mal...@cs...>]

I'm attempting to install wxHaskell from the darcs repo at
darcs.haskell.org, under ghc-6.6. on MacOS 10.4.11, with wxMac-2.6.4.

The compilation of wxHaskell seems to proceed OK until the link stage:

    g++ -r -keep_private_externs -nostdlib -o out/wxc/master.o ....

which failed because there is no -lstdc++-static on my machine.  I found
the place in the makefile to replace -lstdc++-static with the dynamic
-lstdc++, and compilation proceeds further, but not much:

    g++ -dynamiclib -install_name /usr/local/wxhaskell/lib/libwxc-mac2.6.4-0.10.1.dylib -undefined suppress -flat_namespace -o out/wxc/libwxc-mac2.6.4-0.10.1.dylib out/wxc/master.o -lwx_macu_gl-2.6 -L/usr/local/lib -framework QuickTime -framework IOKit -framework Carbon -framework Cocoa -framework System -lwx_macu_media-2.6 -lwx_macu-2.6
    ld: out/wxc/master.o undefined symbol 12387 (__ZTI10wxListBase) can't be a weak definition
    /usr/bin/libtool: internal link edit command failed

The offending symbol __ZTI10wxListBase looks like it might be a
z-encoded symbol from Haskell-land, but I'm not sure how to proceed.

Regards,
    Malcolm

Re: [wxhaskell-users] building from darcs on MacOS 10.4

[Eric K. <eri...@gm...>]

Hi Malcolm,

On 07/02/2008, Malcolm Wallace <Mal...@cs...> wrote:
> I'm attempting to install wxHaskell from the darcs repo at
> darcs.haskell.org, under ghc-6.6. on MacOS 10.4.11, with wxMac-2.6.4.
>
> The compilation of wxHaskell seems to proceed OK until the link stage:
>
>     g++ -r -keep_private_externs -nostdlib -o out/wxc/master.o ....

Does obliterating this patch help at all?
 (OS X) Check architecture to use intermediate step of compiling
master.o or not.

Cheers,
-- 
Eric Kow <http://www.nltg.brighton.ac.uk/home/Eric.Kow>
PGP Key ID: 08AC04F9

Re: [wxhaskell-users] building from darcs on MacOS 10.4

[Malcolm W. <Mal...@cs...>]

"Eric Kow" <eri...@gm...> wrote:

> > The compilation of wxHaskell seems to proceed OK until the link
> > stage:
> >
> >     g++ -r -keep_private_externs -nostdlib -o out/wxc/master.o ....
> 
> Does obliterating this patch help at all?
>  (OS X) Check architecture to use intermediate step of compiling
> master.o or not.

Yes!  Removing that patch allowed the build to complete without errors.
I can even build some of the demo programs in the sample/contrib
directory.  But unfortunately, they all seem to crash with the following
dynamic link error:

    dyld: Symbol not found: __ZN8wxThread11TestDestroyEv
      Referenced from: /usr/local/wxhaskell/lib/libwxc-mac2.6.4-0.10.1.dylib
      Expected in: flat namespace

    Trace/BPT trap

Could this be anything to do with me building the underlying wxMac
library with --disable-shared (which was a suggestion I found on the
mailing list from a couple of years ago, originally to fix a similar
problem)?

Regards,
    Malcolm

Re: [wxhaskell-users] building from darcs on MacOS 10.4

[Malcolm W. <Mal...@cs...>]

I wrote:

> Could this be anything to do with me building the underlying wxMac
> library with --disable-shared

The answer is yes.  A correct build on MacOS 10.4.11 with ghc-6.6
requires that wxWidgets is configured with --enable-shared, and that
this patch:

    (OS X) Check architecture to use intermediate step of compiling
    master.o or not.

be darcs unpulled from your local repo.  (Incidentally, unpulling
requires first that one must darcs unpull a tag, then re-run darcs, in
order to find this patch.)

With these tweaks, wxHaskell builds, compiles, and runs the demo
programs.

There is still one tiny problem, specifically and only with the demo
program: samples/contrib/GLCanvas.hs, which continues to give a dynamic
linking error.  I tracked this down to the shared library

    /usr/local/wxhaskell/lib/libwxc-mac2.6.4-0.10.1.dylib

which does not (but _ought_ to) have a dependency on

    /usr/local/lib/libwx_macu_gl-2.6.0.4.0.dylib

for the OpenGL stuff to be found.  I simply added the latter into the
.cabal file for wxcore (under "extra-libraries"), but there is probably
a better way of fixing it.

Regards,
    Malcolm

Re: [wxhaskell-users] building from darcs on MacOS 10.4

[Eric K. <eri...@gm...>]

Hi Malcolm,

> There is still one tiny problem, specifically and only with the demo
> program: samples/contrib/GLCanvas.hs, which continues to give a dynamic
> linking error.  I tracked this down to the shared library

Did you also put in '--with-opengl' into your wxhaskell configure options?

Best,

-- 
Eric Kow <http://www.nltg.brighton.ac.uk/home/Eric.Kow>
PGP Key ID: 08AC04F9

Re: [wxhaskell-users] building from darcs on MacOS 10.4

[Eric Y. K. <eri...@gm...>]

Hi Malcolm,

On Fri, Feb 08, 2008 at 14:11:28 +0000, Malcolm Wallace wrote:
>     (OS X) Check architecture to use intermediate step of compiling
>     master.o or not.

By the way, are you on PowerPC or Intel? (i guess the former?)

> There is still one tiny problem, specifically and only with the demo
> program: samples/contrib/GLCanvas.hs, which continues to give a dynamic
> linking error.  I tracked this down to the shared library
> 
>     /usr/local/wxhaskell/lib/libwxc-mac2.6.4-0.10.1.dylib
> 
> which does not (but _ought_ to) have a dependency on
> 
>     /usr/local/lib/libwx_macu_gl-2.6.0.4.0.dylib

Can you report the contents of
  config/config.mk (specifically WXWIN-LIBS)?

Also, what does
  /usr/local/bin/wx-config --libs std media --gl-libs
say?

Thanks!

-- 
Eric Kow <http://www.nltg.brighton.ac.uk/home/Eric.Kow>
PGP Key ID: 08AC04F9