[Rd] Using Rtools with gcc 4.8.3

[Uwe Ligges]

On 05.10.2014 12:20, Jeroen Ooms wrote:
> I started working on some R bindings for mongo-c-driver [1]. The C
> library compiles fine on Ubuntu Trusty (gcc 4.8.2) and osx (clang),
> however on my windows machine (gcc 4.6.3 from Rtools 3.1) it fails
> with:  'INIT_ONCE_STATIC_INIT' undeclared. Google suggests that this
> might be a problem in older versions of mingw-w64. So I grabbed a copy
> of mingw-w64 version 4.8.3 and indeed, here the library compiles
> without errors.
>
> Now I am unsure how to make mingw 4.8.3 work with Rtools. I extracted
> the contents of [2] into "C:\RBuildTools\3.1\gcc-4.8.3\" and my
> package Makevars contains
>
>    CC = "c:/RBuildTools/3.1/gcc-4.8.3/bin/gcc"
>
> However it seems like R still uses the old gcc 4.6.3 for R CMD
> INSTALL. What am I doing wrong? Is there a recommended setup for
> building packages on Windows using a Rtools but with another compiler?
>
> In addition: will I be able to publish this package to CRAN, or do I
> have to wait for Rtools to get updated with a more recent gcc?

Currently only 4.6.3 is supported and that is the one used to build 
binary packages on CRAN. Hence you need to wait until it is updated.

Best,
Uwe Ligges

>
> [1] https://github.com/mongodb/mongo-c-driver
> [2] http://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/4.8.3/threads-posix/dwarf/
>
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