[Rd] Cross-compilation

[tom at levelelimited.com]

More information for you.

In order to test some ideas I had I first attempted to compile the gafit
package which is just a single file - this compiled fine (this is a C
package).  

I then added the iostream library to it as so:

#include <iostream>

and altered the extension from c to cpp so it would compile as a C++ program
and I get the following:

*********************************
   START OUTPUT
*********************************
export
PATH=/my/path/RCrossBuild/cross-tools/bin:/my/path/RCrossBuild/cross-tools/mingw32/bin:/usr/local/pgsql/bin:/home/tmccallum/sbin:/usr/java/jdk1.5.0_06/bin:/usr/java/jdk1.5.0_06/jre/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/home/tmccallum/bin;
\
export mypkg=`echo gafittest | cut -d'_' -f1,1`; \
export mypkg_v=gafittest; \
cd /my/path/RCrossBuild/pkgsrc; \
rm -rf $mypkg; \
tar zxf gafittest.tar.gz; \
echo ---        ----$mypkg------; \
cd /my/path/RCrossBuild/WinR/R-2.4.0/src/gnuwin32/; \
make PKGDIR=/my/path/RCrossBuild/pkgsrc RLIB=/my/path/RCrossBuild/WinRlibs
STAMP=no pkg-$mypkg; \
mkdir -p         /my/path/RCrossBuild/WinRlibs; \
cd /my/path/RCrossBuild/WinRlibs; \
rm -rf $mypkg_v.zip; \
zip -rl $mypkg_v.zip $mypkg -x \*.so \*.dll \*.RData \*.rda \*.gz \*.zip
\*.rds \*.pdf \*.ps;\
zip -r9 $mypkg_v.zip $mypkg -i \*.so \*.dll \*.RData \*.rda \*.gz \*.zip
\*.rds \*.pdf \*.ps;\
rm -rf $mypkg_v
--- ----gafittest------
make[1]: Entering directory `/my/path/RCrossBuild/WinR/R-2.4.0/src/gnuwin32'

---------- Making package gafittest ------------
  adding build stamp to DESCRIPTION
  making DLL ...
making gafit.d from gafit.cpp
In file included from
/my/path/RCrossBuild/cross-tools/bin/../lib/gcc/i586-mingw32/3.4.5/../../../../include/c++/3.4.5/bits/locale_facets.h:1533,
                 from
/my/path/RCrossBuild/cross-tools/bin/../lib/gcc/i586-mingw32/3.4.5/../../../../include/c++/3.4.5/bits/basic_ios.h:44,
                 from
/my/path/RCrossBuild/cross-tools/bin/../lib/gcc/i586-mingw32/3.4.5/../../../../include/c++/3.4.5/ios:51,
                 from
/my/path/RCrossBuild/cross-tools/bin/../lib/gcc/i586-mingw32/3.4.5/../../../../include/c++/3.4.5/ostream:45,
                 from
/my/path/RCrossBuild/cross-tools/bin/../lib/gcc/i586-mingw32/3.4.5/../../../../include/c++/3.4.5/iostream:45,
                 from gafit.cpp:22:
/my/path/RCrossBuild/cross-tools/bin/../lib/gcc/i586-mingw32/3.4.5/../../../../include/c++/3.4.5/bits/codecvt.h:219:45:
macro "length" passed 4 arguments, but takes just 1
make[4]: *** [gafit.d] Error 1
make[3]: *** [srcDynlib] Error 2
make[2]: *** [all] Error 2
make[1]: *** [pkg-gafittest] Error 2
make[1]: Leaving directory `/my/path/RCrossBuild/WinR/R-2.4.0/src/gnuwin32'
  adding: gafittest/ (stored 0%)
  adding: gafittest/DESCRIPTION (deflated 41%)
  adding: gafittest/Meta/ (stored 0%)
  adding: gafittest/COPYING (deflated 62%)
  adding: gafittest/Meta/package.rds (deflated 54%)

*********************************
   END OUTPUT
*********************************

I have checked the search paths and it is using the includes in gcc 3.4.5 that
come with mingW32 as the docs say it should.  Line 22 of gafit that it points
to is where I include iostream (have tried both <iostream> and "iostream" to
see if it made any difference).  So I think that the g++ version of mingW32
may be the problem.

Any suggestions,

Tom





"Tom McCallum" <term at blueyonder.co.uk> wrote:

> Thanks for your reply, as an example it appears to have difficulty linking  
> to even ostream library of the standard C++, as shown below:
> 
> /home/tmccallum/ritzel/RItzel/src/Classifier.cpp:209: undefined reference  
> to `_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc'
> Classifier.o: In function `operator<<':
>
/usr/lib/gcc/i386-redhat-linux/4.0.2/../../../../include/c++/4.0.2/ostream:218:
>  
> undefined reference to `_ZNSolsEd'
>
/usr/lib/gcc/i386-redhat-linux/4.0.2/../../../../include/c++/4.0.2/ostream:196:
>  
> undefined reference to `_ZNSolsEl'
> 
> I am currently working R-2.4.0 as downloaded today.
> 
> I know the g++ has gone through some alterations and wondered if you knew  
> the version of g++ you cross-compiled your package with for comparison -  
> mine is g++ (GCC) 4.0.2 20051125 (Red Hat 4.0.2-8).
> 
> Many thanks
> 
> Tom
> 
> 
> On Wed, 25 Oct 2006 18:10:40 +0100, Ramon Diaz-Uriarte <rdiaz at cnio.es>  
> wrote:
> 
> > Dear Tom,
> >
> > It has worked for me out-of-the box in at least two times, one a while  
> > ago
> > with R-2.2-something and recently with R-2.4.0. In both cases, I was  
> > running
> > Debian (with a mix of testing and unstable) on x86. I never had to do
> > anything, just run the script and at least in one case I did  
> > crosscompile a
> > package with C++.
> >
> >
> > R.
> >
> > On Wednesday 25 October 2006 18:03, Tom McCallum wrote:
> >> Hi everyone,
> >>
> >> I am trying to cross-compile a package I wrote using the Yan and Rossini
> >> tutorial "Building Microsoft Windows versions of R and R packages using
> >> Intel Linux".  I have got reasonably far with this but when doing the
> >> linking using the line:
> >>
> >> i586-mingw32-g++  -shared -s  -o mylibrary.dll mylibrary.def mylibrary.o
> >> mylibrary_res.o  -L/my/path/RCrossBuild/WinR/R-2.4.0/bin -lR
> >>
> >> I get lots of these type of messages:
> >> /my/path/to/mylibrary.cpp:43: undefined reference to
> >> `_GLOBAL_OFFSET_TABLE_'
> >>
> >> and other similar linker errors for virtually every object and command  
> >> in
> >> the program.  After some googling I have found that there may be  
> >> problems
> >> with the libgcc.a library and its default -fPIC argument during
> >> compilation.
> >>
> >> Has anyone got this tutorial to work and if so how did they overcome  
> >> this?
> >>
> >> I am attempting to do this on Fedora Core 4 on a 32-bit machine, having
> >> completed all the previous sections of the tutorial for building a
> >> cross-platform version of R.
> >>
> >> Many thanks
> >>
> >> Tom
> >
> 
>