[Rd] Update on MinGW-w64 builds for 64-bit Windows

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Fri, 22 Jan 2010 07:24:12 +0000 (GMT)

An update to the announcement at

We now have daily builds of snapshots of R-devel for 64-bit Windows available at http://cran.r-project.org/bin/windows64/contrib/ . Tcl/Tk support is now provided.

There is a repository of binary packages available, selected by options(pkgType="win64.binary"), at CRAN and CRANextras: currently we can build about 2000 packages. The win-builder service has an option to build and test packages under the current R-devel snapshot, and logs of the builds for the repository are available as part of the CRAN daily check at
http://cran.r-project.org/web/checks/check_summary.html (but note that some of the failures are available on CRANextras). The default remains to build packages from sources.

The main reason that packages have failed to build are unresolved dependencies on either other R packages or external software. Pre-built 64-bit DLLs of common Open Source libraries are much harder to find than 32-bit ones and we have not put in the effort that we have over the years for 32-bit Windows. Bioconductor binary packages are not available (but that project has plans to build them in due course).

Package maintainers who ignored the advice not to write Makefiles (but use Makevars) will find that chickens have come home to roost: such packages almost certainly will not install. Including

include $(R_HOME)/etc/Makeconf

and using macros such as $(CC), $(AR) and $(DLLTOOL) or (better) the rules in Makeconf often does enable Makefile[.win] to be used.

Brian Ripley and Uwe Ligges

Brian D. Ripley,                  ripley_at_stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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