On Jun 13, 2011, at 10:21 AM, Hadley Wickham wrote:
> Hi all,
>
> Is there a straight-forward, cross-platform way of determining if a
> user has all the tools needed to develop R packages (i.e. gcc etc)?
> It doesn't need to be 100%, but should give a rough idea. One idea I
> had was simply to see if system("R CMD install --help") worked.
>
That's not really checking pretty much anything (even if you used INSTALL ;))
since all it does is to run R.
More reasonable quick check may be R CMD SHLIB, though, since that involves
both make and gcc:
echo 'void foo(int *bar) { *bar=1; }' > foo.c && R CMD SHLIB foo.c
And you could even check feasibility with something like
dyn.load(paste("foo",.Platform$dynlib.ext,sep=''))
stopifnot(.C("foo",0L)[[1]] == 1L)
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