As from 2018 (Pd-0.48-1) see: http://puredata.info/docs/developer/WindowsMinGW for a guide on building Pd for 64-bit with Msys2.

Outdated content from around 2011:

This page is a place to document the progress of developing a build environment for 64-bit Windows using MinGW. You can get some ideas from the 32-bit MinGW page: WindowsMinGW.

The following guide is still incomplete

• install the 32 bit toolchain as described in WindowsMinGW (you can skip installing libraries)

• get mingw basic library and mingw multimedia library x64 native binaries from http://www.drangon.org/mingw/, and unpack it to C:\mingw_w64.

• remove C:\msys\1.0\bin and C:\MinGW\bin from %PATH%, and add C:\mingw_w64\bin to %PATH%

• edit /etc/fstab (C:\msys\1.0\etc\fstab) and replace C:\MinGW with C:\mingw_w64

• now open the msys shell and check version:

  $ gcc --version
  gcc.exe (GCC) 4.5.2 20100804 (prerelease)
  Copyright (C) 2010 Free Software Foundation, Inc.
  This is free software; see the source for copying conditions.  There is NO
  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Links

• http://mingw-w64.sourceforge.net/

• http://www.drangon.org/mingw/