Hi Matt, Thanks a lot for the details and the work. That is great! There is a problem, though: in my particular case, I am uploading my package to BioConcutor, and there the compiler for Win is 4.6.3 so I am restricted to that. Including randutils will lead to an error during building the package in Windows.
Best, R. On Wed, 24-06-2015, at 14:55, Matt D. <mat...@gmail.com> wrote: > On 6/22/2015 12:31, Ramon Diaz-Uriarte wrote: >> Actually, I just noticed that things will not work if you need your package >> to run on Windoze: Rtools uses gcc 4.6.3 there, and this will not work with >> gcc 4.6 (neither in Linux nor Windows) with flag -std=c++0x or >> -std=gnu++0x. I guess this should be fixable, but I do not know enough to >> do it. > Hi again! > > I've just tried with the work-in-progress, _experimental_ version > available at the following location: > https://rawgit.com/kevinushey/RToolsToolchainUpdate/master/mingwnotes.html > > // In particular, I've used "Windows native compiler for 64 bit Windows > output mingw32mingw64_gcc-4.9.2.toolchain.tar.gz". > > This works better -- the only missing part is <thread> support :-( > However, it is not exactly essential here, in that it's used solely in > one place -- to get some extra entropy; that's all. > After temporarily removing dependence on `std::this_thread::get_id()`, > the example -- available at > http://www.pcg-random.org/posts/ease-of-use-without-loss-of-power.html > -- compiles and runs successfully. > > Incidentally, one can get threads support for MinGW using MSYS2, which > gives: > Thread model: posix > gcc version 4.9.2 (Rev5, Built by MSYS2 project) > > However, the MinGW that comes with Rtools uses the following: > Thread model: win32 > gcc version 4.9.2 (GCC) > > I presume there must be a reason for that. There are certainly > trade-offs present: > https://wiki.qt.io/MinGW-64-bit#GCC_Threading_model_.28posix_vs_win32.29 > What hits us here is the "no C++11 <thread>, <mutex>, or <future> " > ("C11" appears to be a typo) part for the win32 choice. > // See also: > https://stackoverflow.com/questions/17242516/mingw-w64-threads-posix-vs-win32 > > Note that there's nothing multithreading-specific about the library, so > even though I've also tested it with > https://github.com/meganz/mingw-std-threads (warning: just something > I've ran across while searching for multithreading support for MinGW > built w/ win32 threading model, quality and license unknown) and also > made it compile & work after a small patch (adding the std::hash > specialization), it's probably possible to use another source of entropy > here. > > I presume another idea would be to use a different GCC version, but > that's rather tedious -- > https://stackoverflow.com/questions/25455829/using-a-different-gcc-version-from-that-included-with-rtools-with-rcpp-on-window > Other than the above, I'm wondering myself what's the "official" > recommendation for the C++11 threading support w/ Rcpp on Windows. > > Best, > > Matt -- Ramon Diaz-Uriarte Department of Biochemistry, Lab B-25 Facultad de Medicina Universidad Autónoma de Madrid Arzobispo Morcillo, 4 28029 Madrid Spain Phone: +34-91-497-2412 Email: rdia...@gmail.com ramon.d...@iib.uam.es http://ligarto.org/rdiaz _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
