[R-pkg-devel] Namespace problem with pre-R 3.0.0 package

On 03.03.2016 16:08, Martyn Plummer wrote:

On Thu, 2016-03-03 at 15:45 +0100, Sebastien Moretti wrote:

I have just found that R 2 filled by itself the NAMESPACE file
with
# Export all names
exportPattern(".")

# Import all packages listed as Imports or Depends
import(
????cluster
)


So I filled the NAMESPACE file with that and gave it to R 3
Now functions are found!


Is it enough to do that?

Yes. Even in the latest version of R, "R CMD build" will create a
default NAMESPACE file like that for you if one does not exist.

Is it good practice to do that?

No. The Writing R Extensions manual says "such broad patterns are
not
recommended for production code: it is better to list all exports
or
use narrowly-defined groups"

is .onLoad ... still required?

Yes, if your package has compiled code (e.g. C, C++, Fortran) then
the
.onLoad function is required to load it into R.

Well, I do not use .onLoad but just the

useDynLib(packagename)

directive in the NAESPACE file.

Best,
Uwe Ligges

Martyn

Regards

Hi

I have issues with an R package developed in 2004.
It works perfectly in R < 3.
It can be installed in R > 3 but functions are not available.

Documentation I found is not really helpful for me who are not
an R
master.
I have already fixed some problems with R CMD check but
remaining
ones
are less trivial.


For what I understand - with R < 3 - everything is loaded with
this
command in an R file in the R/ directory:
.First.lib <- function(lib, pkg) library.dynam("jacop", pkg,
lib);
require("cluster")

Now I replaced that with
.onLoad <- function(lib, pkg) {library.dynam("jacop", pkg,
lib);
require("cluster")}
but functions are not found when called.

NAMESPACE exists but is empty.


Any idea how to solve that?


Regards

--
S?bastien Moretti

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