Support R 3.3.0 Windows new toolchain

[qinwf]

Tested with R-3.3.0 alpha build for Windows with Rtools 3.3.

[kevinushey]

Just double checking -- is the double slash, in "bin//", really necessary?

[qinwf]

Yes, without //, then will show this:

c:/Rtools//mingw_64/bing++  -I"C:/PROGRA~1/R/R-33~1.0AL/include" -DNDEBUG     -I"C:/Users/outwen/Documents/R/win-library/3.3/Rcpp/include" -I"C:/Users/outwen/AppData/Local/Temp/RtmpWk5CaT"  -I"d:/Compiler/gcc-4.9.3/local330/include"     -O2 -Wall  -mtune=core2 -c file2680116e76f7.cpp -o file2680116e76f7.o
c:/Rtools//mingw_64/bing++: not found
make: *** [file2680116e76f7.o] Error 127
Warning message:
running command 'make -f "C:/PROGRA~1/R/R-33~1.0AL/etc/x64/Makeconf" -f "C:/PROGRA~1/R/R-33~1.0AL/share/make/winshlib.mk" SHLIB_LDFLAGS='$(SHLIB_CXXLDFLAGS)' SHLIB_LD='$(SHLIB_CXXLD)' SHLIB="sourceCpp_1.dll" WIN=64 TCLBIN=64 OBJECTS="file2680116e76f7.o"' had status 2 
Error in sourceCpp(code = "\n  #include <Rcpp.h>\n\n  // [[Rcpp::export]]\n  int fibonacci(const int x) {\n    if (x == 0) return(0);\n    if (x == 1) return(1);\n    return (fibonacci(x - 1)) + fibonacci(x - 2);\n  }") : 
  Error 1 occurred building shared library.

WARNING: The tools required to build C++ code for R were not found.

Please download and install the appropriate version of Rtools:

http://cran.r-project.org/bin/windows/Rtools/

[qinwf]

Also tested with R 3.2.4 for Windows with Rtools 3.3.

[jjallaire]

You can actually include the $(WIN) argument within BINPREF to have R
substitute the architecture automatically, here's what we do in RStudio:

https://github.com/rstudio/rstudio/blob/01d519c07e78672864ab63be9b3257aa54789f65/src/cpp/core/r_util/RToolsInfo.cpp#L159-L161

On Sun, Mar 27, 2016 at 2:28 AM, qinwf notifications@github.com wrote:

Also tested with R 3.2.4 for Windows with Rtools 3.3.

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#451 (comment)

[qinwf]

Thanks @jjallaire , just update it.

[eddelbuettel]

Nice, thanks!