[Rcpp-devel] Rcpp, Windows and CMake
jamie.f.olson at gmail.com
Wed Jan 29 21:07:01 CET 2014
I'm trying to build the Avro-C
library[http://avro.apache.org/docs/1.7.5/api/c/index.html]. There is
a README for building in
but it only has instructions for Visual Studio. I've recently been
wondering if that was intentional, since now cmake-generated MSYS
Makefiles are giving errors.
Are you suggesting that I build the library with MinGW(in
cygwin/linux?) and then just copy it to link to when building the
package with Rcpp?
On Wed, Jan 29, 2014 at 2:07 PM, Thell Fowler <tbfowler4 at gmail.com> wrote:
> On Wed, Jan 29, 2014 at 9:39 AM, Jamie Olson <jamie.f.olson at gmail.com>
>> Hi all,
>> I'm a relative beginner in c/c++ and I'm trying to use c/c++ libraries
>> in an R package. I need it to work in Windows, though, and I'm
>> struggling to get things working.
>> --- >8---
> It might help to state what c/c++ libraries you're trying to get up and
> running. There is some documentation in RTools (IIRC) on setting up an
> RTOOLS_LOCAL encironment that was pretty straight forward. I had success
> building the libraries for GMP, MPFR, and such using mingw-64 then placing
> the resulting files in an RToolsLocal directory. If you go that route you
> should be able to use cmake to build and then install into your LOCAL path.
> Or, are you trying to have this cmake be part of a package that you are
>> The native CMake refuses to use the Rtools gcc with MinGW Makefiles
> This doesn't surprise me at all, as the RTools toolchain requires that the
> environment is setup, which it is when calling _from_ R. You'd have to
> figure out how to do that manually if you want to use that g++ from else
> where (say msys). It can be done, but as you mention...
>> Users developing packages with Rcpp need to ensure that they use a
>> version built with exactly the same toolchain as their package: the
>> recommendation is to build Rcpp from its sources yourself.
>> Do I simply need to install Rcpp from source using my target compiler?
>> Will that effect my ability to use the binary package on other
>> systems(with CRAN Rcpp)?
> You _can_ install Rcpp from source on windows using a recent msys
> environment with a recent g++ ( I did last December ). But there be dragons
> down that road! You have to make sure that you get all of the settings
> correct and all of that jazz, which is a major pain; and then you are still
> going to have problems unless you can figure out the proper procedure for
> getting the unwinding info correct, and the cross boundary communication
> between libraries correct or you will end up freezing R with every error
> your code produces. I would've kept with a g++ 4.8.2 or clang 3.4 if it
> wasn't for the fact that I couldn't get any graceful exception handling.
> I know I make it sound bad. That is on purpose! You said you are a
> relative beginner... I'm someone who likes to 'just dive in'; and I can
> tell you that I dove in right where you are standing and you're gonna your
> head if you do it that way.
>> Thanks for any help you can offer,
>> Jamie Olson
>> Rcpp-devel mailing list
>> Rcpp-devel at lists.r-forge.r-project.org
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