[Rd] Does dlltools in 64-bit rtools for windows support 64-bit machine type?

Johan Johansson johan2sson at gmail.com
Sun Dec 30 15:07:49 CET 2012


I've been trying to get the python bridge (rpy2) to build for 64-bit R
and python. The current stumbling block is that mingw can't use the
python27.lib file that comes with CPython and so I need to generate

When I use dlltool from rtools to do that however, I end up with a 32-bit file:

>"G:\Rtools\gcc-4.6.3\i686-w64-mingw32\bin\dlltool" -e libpython27.a -d python27.def python27.dll
>objdump -f libpython27.a

libpython27.a:     file format pe-i386

More problematically, x86_64 is not listed as supported by objdump:

Usage G:\Rtools\gcc-4.6.3\i686-w64-mingw32\bin\dlltool <option(s)>
   -m --machine <machine>    Create as DLL for <machine>.  [default: i386]
        possible <machine>: arm[_interwork], i386,
mcore[-elf]{-le|-be}, ppc, thumb

Am I doing it wrong?


More information about the R-devel mailing list