Can Someone Help Compile on Raspberry Pi ?

[jimseng]

Hi.
I managed to get opencpn to compile on my Raspberry pi but I can't get it to run. I'm not really a programmer but I am also not a complete linux noob. When I try to run it I get the disclaimer message box and then:

Warning: No handler found for image type.
17:58:47: Debug: ../src/gtk/bitmap.cpp(444): assert "image.Ok()" failed in CreateFromImage(): invalid image
../src/gtk/bitmap.cpp(444): assert "image.Ok()" failed in CreateFromImage(): invalid image
Trace/breakpoint trap

Sorry if this is the wrong place to post. I am guessing I might be missing an image library or summat. Bear in mind that it takes about 5 hours to compile on a Raspi so trying things out can be a little tedious! Any ideas. I would be interested to see how slow it is. (Very I suspect).

[cagney]

Originally Posted by jimseng

Hi.
I managed to get opencpn to compile on my Raspberry pi but I can't get it to run. I'm not really a programmer but I am also not a complete linux noob. When I try to run it I get the disclaimer message box and then:

Warning: No handler found for image type.
17:58:47: Debug: ../src/gtk/bitmap.cpp(444): assert "image.Ok()" failed in CreateFromImage(): invalid image
../src/gtk/bitmap.cpp(444): assert "image.Ok()" failed in CreateFromImage(): invalid image
Trace/breakpoint trap

Sorry if this is the wrong place to post. I am guessing I might be missing an image library or summat. Bear in mind that it takes about 5 hours to compile on a Raspi so trying things out can be a little tedious! Any ideas. I would be interested to see how slow it is. (Very I suspect).

That looks like a WxWidgets problem.
Did you compile yourself?
Which version?

Thomas

[jimseng]

Yes I did compile myself using the instructions as set out on the developer compile help page.
git clone git://opencpn.git.sourceforge.net/gitroot/opencpn/opencpn is where I got the source. It seemed to compile ok but as I said took 5 hours on the Raspberry Pi. Any help would be appreciated.

[nohal]

jimseng...
Thomas was asking about the wxWidgets toolkit - not OpenCPN itself. The error you are getting suggests your wxGTK is not able to handle images as needed.

Pavel

[jimseng]

Ah. I see.
I didn't compile wxWidgets toolkit myself, I did an apt-get as per the instructions. I followed them pretty much to the letter and apart form having to add swap space it compiled as I expected.

[bdbcat]

jimseng....

I suspect the precompiled wxWidgets does not have the correct options set. You may need to compile wxWidgets yourself. If OpenCPN takes 5 hours to compile, wxWidgets could take days.....

Is there a cross-development environment that you could use for RaspberryPI?

Dave

[jimseng]

I guess I could try to do it in a VM with qemu? I fear I am wading out of my depth however. The libwxgtk2.8-dev is supposed to be for Arm. Is that where the problem lies?

[JesperWe]

When your libwxgtk2.8-dev package was built, whoever did it specified a number of options deciding which parts of wxW to include in the build and what format the resulting libraries should be in.

If the option settings do not conform to OpenCPN requirements you need to recompile wxW yourself with the correct options. The easiest way to get this done is by using a more powerful computer, usually an Intel x86 one, for the building, but having it generate ARM code. This is called a cross compile.

I would think you are better off asking in the R-Pi forums for how to set that up.

/j

[conachair]

might be some useful info on this thread..

http://www.ybw.com/forums/showthread.php?p=3574770

Good luck.

[jimseng]

Thanks for the explanations. I see what I have to do and will continue with my quest!

[jimseng]

Just to finish this off properly. I got it working by downloading the pre compiled version(s)

http://opencpn.xtr.cz/ticki/opencpn_arm.tar.gz
http://opencpn.xtr.cz/ticki/wxGTK_arm.tar.gz
the wxGTK_arm.tar.gz I think is the bit that got it working but not having to compile the main opencpn binaries saves a lot of time.
I also had to symlink a libtiff.so.5 to the exisitng libtiff.so.4
It is indeed slow but does actually work. I wonder if it is unfair to ask the Raspi to display maps at 1920x1080, after all , my 42" LCD tv would take up rather a lot of space on b oard. A smaller display might be better.

[Vamonos]

I just received my Raspberry Pi today. Have you tried a lower resolution to see if the latency issues are resolved?

Richard