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? [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/ ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
