#include <Rcpp.h>
using namespace Rcpp;

// [[Rcpp::export]]
int timesTwo(int x) {
   return x * 2;
}

library(Rcpp)
sourceCpp("cppfile.cpp")

C:/opt/R/current/etc/x64/Makeconf:196: warning: overriding recipe for target `.m.o' C:/opt/R/current/etc/x64/Makeconf:189: warning: ignoring old recipe for target `.m.o' C:MINGW3~1binmake.exe: Interrupt/Exception caught (code = 0xc0000005, addr = 0x0x750343f9) Warning message: running command 'make -f "C:/opt/R/current/etc/x64/Makeconf" -f "C:/opt/R/current/share/make/winshlib.mk" SHLIB_LDFLAGS='$(SHLIB_CXXLDFLAGS)' SHLIB_LD='$(SHLIB_CXXLD)' SHLIB="sourceCpp_67515.dll" WIN=64 TCLBIN=64 OBJECTS="cppfile.o"' had status 255
Error in sourceCpp("cppfile.cpp") :
  Error 1 occurred building shared library.

g++ -m64 -I"C:/opt/R/current/include" -DNDEBUG     -I"C:/opt/R/current/library/Rcpp/include"  -I"d:/RCompile/CRANpkg/extralibs64/local/include"     -O2 -Wall  -mtune=core2 -c cppfile.cpp -o cppfile.o cppfile.cpp:1:0: sorry, unimplemented: 64-bit mode not compiled in make: *** [cppfile.o] Error 1 Warning message: running command 'make -f "C:/opt/R/current/etc/x64/Makeconf" -f "C:/opt/R/current/share/make/winshlib.mk" SHLIB_LDFLAGS='$(SHLIB_CXXLDFLAGS)' SHLIB_LD='$(SHLIB_CXXLD)' SHLIB="sourceCpp_41862.dll" WIN=64 TCLBIN=64 OBJECTS="cppfile.o"' had status 2
Error in sourceCpp("cppfile.cpp") :
  Error 1 occurred building shared library.