The current version of the tools is at http://www.murdoch-sutherland.com/Rtools/. Only some components compiled by BDR are hosted here. They are for 32-bit Windows unless stated otherwise.
The proposed 32-bit toolchain for R 2.12.0 is temporarily hosted here, mingw32-toolchain.zip. Simply unpack this in an empty directory and put its bin directory in your path instead of MinGW/bin.
A version of the 64-bit toolchain for R 2.11.x (based on gcc 4.4.4 and with leading underscores) is available as oldWin64toolchain.zip. This is based on mingw-w64-1.0-bin_i686-mingw_20100405.zip, which is no longer available from the MinGW-w64 site on SourceForge.
A toolchain for 64-bit builds which is based on gcc 4.5.1 and does not use leading underscores is available as Win64No_toolchain.zip. This is intended to be the recommended 64-bit toolchain for R 2.12.0.
The Rtools.exe installer contains
R_Tcl_8-5-8.zip.
The procedures and scripts used to compile the Tcl directory
and in particular to produce the help file are at
https://svn.r-project.org/R-packages/trunk/R-Tcl-win/.
The sources used were
tcl8.5.8-src.tar.gz,
tk8.5.8-src.tar.gz,
BWidget-1.8.0.tar.bz2 and
Tktable2.9.tar.gz.
64-bit builds of Tcl/Tk:
R64_Tcl_8-5-8.zip
for use with R 2.11.x, and
R64a_Tcl_8-5-8.zip
for use with R-devel (pre-2.12.0).
Directory goodies contains various libraries compiled up with MinGW, and their sources. In particular local.zip (32-bit) and local64.zip (64-bit, 2.11.x) local64No_.zip (64-bit 2.12.x) are zipfiles of a /usr/local as used for CRAN builds: they currently contains headers and static libraries for fftw (2.1.5), fftw3 (3.2.2), gmp, gsl (1.12 or 1.14), jpeg (8b), mpfr, sprng (2.0b), and tiff (3.9.1 or 3.9.4). As from R 2.11.1 src/gnuwin32/MkRules.dist has a macro LOCAL_SOFT that can be pointed at the location where this was unpacked. (Set this in src/gnuwin32/MkRules in R 2.11.0.)
The software in goodies/Win64 is built with the leading-underscore convention of the toolchain used for R 2.11.x. For post-April-2010 versions of MinGW-w64 which omit underscores, use the software in goodies/Win64No_. File Spatial64.zip contains software needed for use with packages proj4 and rgdal: netcdf-4.0.1.zip and udunits-1.12.4.zip support packages RNetCDF, ncdf and udunits.
Grouping together links from above:
The recommended toolchain is
oldWin64toolchain.zip.
The build of Tcl/Tk needed to build R in
R64_Tcl_8-5-8.zip
The additional software for making CRAN packages is under
goodies/Win64
Grouping together links from above:
The recommended toolchain is
Win64No_toolchain.zip.
The build of Tcl/Tk needed to build R in
R64a_Tcl_8-5-8.zip
The additional software for making CRAN packages is under
goodies/Win64No_
Directory goodies also contains some tools. These are 32-bit executables, so will run on any version of Windows.
file-5.03.zip is a build of the file found on Unix-alikes.
xzutils.zip is a build of the xz utils 4.999.9 which provides command-line tools to manipulate files compressed with xz as some versions of lzma compression.