[CMake] Thoughts on Cross-compiling with CMake

[Trevor Kellaway]

 [Repost as list won't accept large patch, only
cross-compiler-base-diff-against-2.4p6.diff included]

> -----Original Message-----
> From: Trevor Kellaway 
> Sent: 29 April 2007 18:00
> To: cmake at cmake.org
> Cc: 'bernhard.sputh at gmail.com'
> Subject: RE: [CMake] Thoughts on Cross-compiling with CMake
> 
> Bernhard,
> 
> > That would be ID 14, opened in 2003 and set on low 
> priority, well very 
> > low it seems to me.
> 
> Well I wouldn't hold you breath...
> 
> 
> > > Have a look at this thread
> > > http://public.kitware.com/pipermail/cmake/2007-March/013083.html
> > 
> > This thread must have slipped my radar, it looks very 
> similar to what 
> > I was thinking of. Except that my idea was to modify the 
> behaviour of 
> > the CMake's source code, while Your solution relies on simply 
> > modifying the scripts CMake uses.
> 
> I was trying not to modify CMake source, given it nicely uses 
> scripts that are easy to change, and more accessible to most people.
> 
> 
> > > I'm using this approach to build multiple targets, for embedded 
> > > processors with multiple compilers (and for the PC as well).
> > >
> > > I can post the patches if you like.
> > 
> > Thank You, that would be helpful, even if I learnt a lot from the 
> > snippets You sent in Your earlier post.
> 
> Patches attached, against 2.4p6 release, but patches created 
> against my Subversion base copy of CMake (sorry):
> 
>  cross-compiler-base-diff-against-2.4p6.diff - This file 
> contains just the mods to the existing CMake files.
>  cross-compiler-additions-against-2.4p6.diff - This file 
> contains my additional files, this is a work in progress.
> 
> To perform an out of source build for Metrowerks HC12X where 
> the compiler is chc12.exe:
> 
> 	mkdir build
> 	cd build
> 	cmake -G"NMake Makefiles" 
> -DCMAKE_CROSS_COMPILER:string=chc12 ..\source
> 
> Note that GenericBuildPrologue.cmake does some nasty 
> non-standard things to CMAKE_BUILD_TYPE (via 
> GENERIC_BUILD_TYPE), setting the style of build based on the 
> output directory name, this is because our existing build 
> system which I'm porting does this. This is *not* the correct 
> CMake way of doing things.
> 
> > BTW, have You submitted the patches to the development team?
> 
> Nope, mainly because I don't know how to. This project seems 
> unlike others that actively publish bleeding edge builds, all 
> I've found is the main CVS tree (I use Subversion) and this 
> forum, I assume the developers hang out here?
> 
> CMake is very good once you start to get the hang of it, but 
> it can be an uphill struggle with the lack of documentation 
> at times, which could well put people off.
> 
>  - TrevK
-------------- next part --------------
A non-text attachment was scrubbed...
Name: cross-compiler-base-diff-against-2.4p6.diff
Type: application/octet-stream
Size: 2910 bytes
Desc: cross-compiler-base-diff-against-2.4p6.diff
Url : http://public.kitware.com/pipermail/cmake/attachments/20070429/2227b141/cross-compiler-base-diff-against-2.4p6.obj