On 12-12-30 9:07 AM, Johan Johansson wrote:
Hi,
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
libpython27.a.
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)>
<object-file(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?
You aren't using the same flags as R uses in its builds. For 64 bit
builds, it uses these flags (from MkRules.rules):
DLLTOOLFLAGS=--as $(BINPREF)as $(DT_ARCH) -k
DT_ARCH = -m i386:x86-64 --as-flags --64
Duncan Murdoch
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