[Rcpp-devel] Recommended procedure to depend on Rcpp

[Romain Francois]

Le 17/11/10 17:43, Dominick Samperi a écrit :
> In the GNU make case it is better to use ':=' instead of '=' because in
> the latter case there
> can be surprising side-effects (the RHS is evaluated on every use).

PKG_LIBS is needed exactly once, so your point is moot.

> On Wed, Nov 17, 2010 at 11:36 AM, Romain Francois
> <romain at r-enthusiasts.com <mailto:romain at r-enthusiasts.com>> wrote:
>
>     Dear package maintainers and members of the Rcpp-devel mailing list,
>
>     Following the discussion that was trigerred by the (most welcome)
>     release of RSNNS, the cran maintainers have advised us about what
>     they consider the best way for a package to declare it depends on Rcpp.
>
>     The documentation will be updated before the next Rcpp release, but
>     here are the main points.
>
>     - In the DESCRIPTION file, you need at least these two lines:
>
>     Depends: Rcpp
>     LinkingTo: Rcpp
>
>
>
>     - In the Makevars file, you need this line:
>
>     PKG_LIBS = `$(R_HOME)/bin/Rscript -e "Rcpp:::LdFlags()"`
>
>     So no requirement on GNU make is needed as the use of backticks
>     supported to be portable.
>
>
>
>     - In the Makevars.win (where we can assume GNU make), you need this
>     line:
>
>     PKG_LIBS = $(shell "${R_HOME}/bin${R_ARCH_BIN}/Rscript.exe" -e
>     "Rcpp:::LdFlags()")
>
>
>       The documentation will include as usual the alternative version
>     that uses configure and configure.win files.
>
>
>
>     Those advices are from the CRAN maintainers, and we are very thankful.
>
>     Please update your packages to implement this, there is no need to
>     wait for another release of Rcpp, and it will only take a few
>     minutes. There are for example a few packages that are still not
>     using LinkingTo: Rcpp
>     (bifactorial, cxxPack, mvabund, phylobase, sdcTable, pcaMethods)
>
>
>
>     Best regards,
>
>     Romain


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