Re: [Haskell-beginners] Re: Installing Gtk2hs

On Sun, 2008-11-30 at 09:24 +0000, Colin Paul Adams wrote:

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"Colin" == Colin Paul Adams writes:

Colin> Now it installs OK with 6.8.3, and all the demos run.

Well, not quite all:

mozembed fails to compile with:

TestEmbedMoz.hs:5:7: Could not find module `Graphics.UI.Gtk.MozEmbed': Use -v to see a list of the files searched for. make: *** [testembedmoz] Error 1

This almost certainly is because you didn't build the mozembed component of gtk2hs. The ./configure script lists all the bits that it's going to build. By default if the corresponding C devel package is not available then the binding will not be built. If you really want to build it then use ./configure --enable-firefox or --enable-xulrunner and it will stop and report exactly what bits it needed but could not find.

And the svgviewer programs fail at runtime with:

svgviewer: user error (Pattern match failure in do expression at SvgViewer.hs:11:2-9)

That's kind of by design, it's a simple demo program that does no error checking on the command line arguments. See that line in the source code: (file:_) <- getArgs So if you call it with a single .svg file parameter it should work.

and:

svg2png: user error (Pattern match failure in do expression at Svg2Png.hs:9:2-18)

Same issue.

and for treelist:

make: *** No rule to make target `TreeSort.hs', needed by `treesort'. Stop.

Good catch, that file is missing from the tarball.

and for opengl:

ghc --make RotatingCube.hs -o cube

RotatingCube.hs:7:17: Could not find module `Graphics.UI.Gtk.OpenGL': Use -v to see a list of the files searched for. make: *** [cube] Error 1

Same as the fist problem. You built gtk2hs without the opengl component. Use ./configure --enable-opengl and it'll tell you what you're missing.

and for sourceview:

ghc --make SourceViewTest.hs -o sourceview

SourceViewTest.hs:5:7: Could not find module `Graphics.UI.Gtk.SourceView': Use -v to see a list of the files searched for. make: *** [sourceview] Error 1

Same problem again, but for the sourceview component. ./configure --enable-sourceview Basically you need to install a bunch of -devel fedora packages so that the Haskell bindings can be built. The thing to check is the summary produced at that end of running ./configure Duncan