[Rd] location of Rconfig.h when using architecture-dependent subdirs

[Prof Brian Ripley]

On Wed, 29 Sep 2010, Konis Kjell wrote:

> My problem arose while trying to build Graphviz with a swig binding for R.
> The wrapper includes R_ext/RS.h which contains #include <Rconfig.h>, then
> uses the pkg-config provided search path taken from libR.pc. Currently
> this is
>
> Cflags: -I${rincludedir}
>
> Could this be changed to match R_XTRA_CPPFLAGS?

Yes.  Not sure we will get to it for 2.12.0, but you can presumably 
edit the file yourself pro tem.

>
> Kjell
>
>
>
> On 29.09.10 16:22, "Prof Brian Ripley" <ripley at stats.ox.ac.uk> wrote:
>
>> On Wed, 29 Sep 2010, Konis Kjell wrote:
>>
>>> Hello,
>>>
>>> I just tried configuring R to use architecture-dependent subdirs
>>>
>>>  $ r_arch=x86_64 ./configure --prefix=/u/smat/konis/testdir
>>>
>>>
>>> on a Debain Squeeze box
>>>
>>>  $ uname -a
>>>  Linux smapc007 2.6.32-5-686 #1 SMP Sat Sep 18 02:14:45 UTC 2010 i686
>>> GNU/Linux
>>>
>>>
>>> After building and installing, the Rconfig.h ended up in
>>> .../lib/R/include/x86_64 but R.h still includes it as
>>>
>>>  #include <Rconfig.h>
>>
>> That should be OK, though.  etc/Makeconf will include
>>
>> R_XTRA_CPPFLAGS =  -I$(R_INCLUDE_DIR) -I$(R_INCLUDE_DIR)/x86_64
>>
>> so Rconfig.h will be found when packages are installed.
>>
>>> I noticed that the CRAN binary for Mac OS X has the following
>>> .../lib/R/include/Rconfig.h. What step am I missing that causes this
>>> file
>>> to be generated?
>>
>> I suspect it is a back-compatibility fix for packages with Makefiles
>> that don't use R_XTRA_CPPFLAGS.
>>
>> I don't have that file on my Mac build (nor my R 2.12.0 Windows
>> builds, both of which use subarchitectures) and I've never seen an
>> issue.
>>
>>>
>>> Thanks,
>>> Kjell
>>>
>>>
>>> /* This is an automatically generated universal stub for
>>> architecture-dependent headers. */
>>> #ifdef __i386__
>>> #include "i386/Rconfig.h"
>>> #elif defined __ppc__
>>> #include "ppc/Rconfig.h"
>>> #elif defined __ppc64__
>>> #include "ppc64/Rconfig.h"
>>> #elif defined __x86_64__
>>> #include "x86_64/Rconfig.h"
>>> #elif defined __arm__
>>> #include "arm/Rconfig.h"
>>> #else
>>> #error "Unsupported architecture."
>>> #endif
>>>
>>> ______________________________________________
>>> R-devel at r-project.org mailing list
>>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>>
>>
>> --
>> Brian D. Ripley,                  ripley at stats.ox.ac.uk
>> Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
>> University of Oxford,             Tel:  +44 1865 272861 (self)
>> 1 South Parks Road,                     +44 1865 272866 (PA)
>> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595