Hi Yixuan
That's very interesting, I didn't know Cairo used that trick. I'll look
into it, many thanks!
Simon
Le 09/06/2015 10:28, Yixuan Qiu a écrit :
Hi Simon,
As far as I know CRAN provides all the libraries you listed except
OpenCV
(http://cran.r-project.org/bin/windows/contrib/ThirdPartySoftware.html).
If you intend to publish your package to CRAN and let CRAN build the
Windows version, I suppose you can directly make use of those libraries.
For OpenCV, you can write a script to download the headers and
pre-compiled library in installation. An example is the configure.win
file in Cairo package.
Of course, the suggestion above is for building a Windows package with
full external dependency support. I have no good idea how to test the
existence of libraries on Windows anyway.
Best,
Yixuan
2015-06-09 3:38 GMT-04:00 Simon Barthelmé
<simon.barthe...@gipsa-lab.fr <mailto:simon.barthe...@gipsa-lab.fr>>:
Dear list,
I've been working on an image processing package for R
(https://github.com/dahtah/imager) that uses Rcpp to provide an
interface to the CImg library.
Cimg is contained in just one header file, which makes it easy to
ship with an R package. It is relatively self-contained, but some
functionality requires external dependencies, such as libpng,
libjpeg, libfftw3 and opencv. These additional modules can be
included at compile time via a #define statement, but of course
the right headers and libraries need to be present.
I'm trying to find a way to provide the additional functionality
without forcing the user to install these dependencies. On
Linux/Mac a possible way to do that would be to use autoconf, but
from what I read Windows support is going to be headache. Does
anyone have advice on alternatives? Much appreciated.
Best
Simon Barthelme
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--
Yixuan Qiu <yixuan....@cos.name <mailto:yixuan....@cos.name>>
Department of Statistics,
Purdue University
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