Re: [fltk.general] Cross Compiling AVR32

[MacArthur, Ian (SELEX GALILEO, UK)]

> Thank you very much!!! I'm using an Ubuntu 6.06 VMWare Image 
> under Windows XP.

Urgh. Just to be sure I understand; you are cross-compiling for the
avr32, from a vmware linux image hosted on winXP. Sounds like the long
way round to me! 
Still, I guess it ought to work...


> The board is running with the normal ATMEL 
> (www.atmel.com/avr32) tools, e.g. busybox "linux" etc. If you 
> need any further information, please let me know and I'll 
> give my best.
> 
> FTLK should run with the fb0 device. I've crosscompiled the 
> nano-x, but I am fed up with it. So I would like to use FLTK.

OK, since your last post, I've had a very brief look at the spec for
these boards (NGW100)... They are certainly cheap, but they might be a
bit "low end"... What are you hoping to do with it?

In particular:
- I worry it doesn't have enough memory, even for a fltk GUI system.
- It's not clear to me what display capability it even has. Are you
intending to run an X-client on it and have it render to an X-server
elsewhere over the net? Or does the device have a display capability of
its own (and if so, what?)
- fltk, "out of the box" doesn't work with the framebuffer device. There
are patches around that do, however.

> I've changed in the config.h just this lines:

Comments interleaved:

> #define WORDS_BIGENDIAN 1

I assume this is correct.

> #define HAVE_STRINGS_H 1
> #define HAVE_STRCASECMP 1
> #define HAVE_STRLCAT 0
> #define HAVE_STRLCPY 0

You are sure this matches what's available in the avr32 toolchain?



> STRIP         = strip

This really should point to the avr32 strip utility.


> CFLAGS                = $(OPTIM) -D_LARGEFILE_SOURCE 
> -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64    -I/usr/include

The include paths MUST point to the avr32 headers, NOT to your host
system headers.

> CXXFLAGS      = $(OPTIM) -D_LARGEFILE_SOURCE 
> -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64    -I/usr/include

Ditto...


> # program to make the archive:
> LIBNAME               = ../lib/libfltk.a
 
I'd be inclined to make this libfltk_avr32.a and so on, just to ensure
it doesn't collide with the host system libs.

> LIBCOMMAND    = /usr/bin/ar cr

If there's an avr32 "ar" you should really reference that, although it
shouldn't matter.


> # libraries to link with:
> AUDIOLIBS     = -lasound

Unlikley to work - and only needed for the example programs anyway.

> LDLIBS                =  -L/usr/lib  -lm  -lXext -lX11

You MUST reference the avr32 libs here, NOT the host system libs.

> GLDLIBS               =  -L/usr/lib   -lm  -lXext -lX11

Ditto...

> LINKFLTK      = ../lib/libfltk.a

See suggestion above about lib naming (libfltk_avr32.a etc...) which
should be applied to all the following fltk lib paths really, I suggest.

> LINKFLTKGL    =
> LINKFLTKFORMS = ../lib/libfltk_forms.a ../lib/libfltk.a
> LINKFLTKIMG   = ../lib/libfltk_images.a ../lib/libfltk.a $(IMAGELIBS)
> LINKSHARED    =  ../lib/libfltk_images.a 
> ../lib/libfltk_forms.a ../lib/libfltk.a $(IMAGELIBS)


> IMAGELIBS     = -L../lib -lpng -lz -ljpeg

If you want image support, you'll need to build avr32 versions of png,
zlib and jpeg, and reference them here.

> # image libraries to build...
> IMAGEDIRS     =
> 
> # The extension to use for executables...
> EXEEXT                =
> 
> # Do we build the OpenGL demos?
> GLDEMOS               =
> 
> # Do we build the threads demo?
> THREADS               =

Might be worth setting this to "THREADS = threads" as threading should
work.

> # Name of FLUID executable we install
> FLUID         = fluid$(EXEEXT)

This'll likely not build right, as it'll try and build a host runnable
fluid with the cross-tools...


> # Additional GUI install/uninstall targets...
> INSTALL_DESKTOP       = install-linux
> UNINSTALL_DESKTOP = uninstall-linux

You aren't going to need these.

> # Be quiet when building...
> .SILENT:

Probably best to remove this line until things are working, that way
you'll see more of what's going wrong!






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