Re: [Boost-users] Weird cross compiling issue

From: James Hughes (JHughes_at_[hidden])
Date: 2006-01-25 05:40:30

> From: Rene Rivera [mailto:grafik.list_at_[hidden]]
> Sent: 23 January 2006 16:21
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] Weird cross compiling issue
> 
> 
> James Hughes wrote:
> > Hello all,
> > 
> > I am cross compiling Boost to an embedded Linux Arm 
> architecture. I reported
> > a problem a week or so ago with failures in some of the 
> libraries which I
> > was unable to solve, and have a bit more information.
> > 
> > One of the issues appears with the serialisation library. 
> Although I am
> > compiling for Arm, the serialisation libs end up as Intel 
> X86 binaries, even
> > though all the other successfully compiled libs are ARM. 
> This then leads to
> > problems elsewhere with libraries that appear to need the 
> serialisation
> > libs.
> > 
> > I can only think that there is an issue with the make 
> system to do with
> > serialisation area.
> > 
> > Anyone have any comments/thoughts?
> 
> Well I don't see anything that would make it not build with the same 
> compiler as the others. Are you sure it's not just a leftover 
> from some 
> previous build? Could you do a build with the "-d+2" option 
> to see which 
> commands it's invoking to compile? To verify that it's always 
> using the 
> cross compiler.

I thought it odd too. I manually deleted all the files flagged as Intel
binaries, then re-did the build, and hey presto, they reappeared - as Intel
binaries!!

I will try the debug option you suggest.

> 
> > In addition, when I do a build to a particular directory:
> > 
> > bjam 
> "-sGCC_ROOT_DIRECTORY=/opt/montavista/mobilinux/devkit/arm/iwmmxt_le"
> > "-sGCC=iwmmxt_le-gcc" "-sGXX=iwmmxt_le-g++" stage
> > 
> > the stage folder is created, in which is a lib folder, in 
> which are all the
> > binaries (including the defective Intel ones). However, I 
> would also expect
> > some header files somewhere - should there also be a h (or 
> header) folder
> > next to lib? If not where are the headers I need to include 
> in my apps using
> > Boost?
> 
> The includes only show up if you do "install". Since you 
> obviously don't 
> want to obliterate your system Boost install you'll also have 
> to specify 
> the "--prefix" of where to install :-)

Thanks - that's what I needed to know. I pressume I could simply copy the
headers from the boost directory to where I need them - is this all the
build/install does?

James