Also, you're failing to tell CMake to build a shared library.
You need
SET(CMAKE_C++_CREATE_SHARED_LIBRARY 1)
And if you're using Rcpp, also need to explicitly add Rcpp link flags
(Rscript -e Rcpp:::LdFlags())
-rd
On 03/05/2013 03:44 PM, Richard Downe wrote:
What I've been doing the past couple years, which has worked extremely
well, is to use a configure script (I've used perl because it allows
me to do a bunch of other build-time processing that's specific to my
package, but bash would work fine as well).
All you need (for perl) is:
#!/usr/bin/perl
chdir "src/";
system("cmake .");
chdir "..";
exit(0);
The end result is that R CMD INSTALL [your package] finds an up to
date makefile in src, but otherwise runs conventionally, and your
package gets built and installed properly.
-rd
On 03/05/2013 02:09 PM, Dirk Eddelbuettel wrote:
On 5 March 2013 at 12:21, Etienne B. Racine wrote:
| I'd like to use a PCL algorithm inside R and they provide a
CMakeLists.txt for
| configuration. I haven't found how to directly use the
CMakeLists.txt in
| building R package, however when I run `make .` form src, I can
generate a
| Makefile that nearly works with `R CMD INSTALL --no-multiarch`.
Read up a little on CMake. It is at the end of the "just another"
frontend /
make replacement. If you turn on verbose mode, you should be able to
see all
g++ invocations.
Which is all you need to mimic in Makevars.
| It does compile correctly my .cpp, however I get
| `Error in library.dynam(lib, package, package.lib) : shared object
| ‘my_package.so’ not found`
|
| Here's the CMakeFileLists.txt :
| ```
| cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
|
| find_package(PCL 1.6 REQUIRED)
|
| set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-declarations")
|
| include_directories(${PCL_INCLUDE_DIRS})
| link_directories(${PCL_LIBRARY_DIRS})
| add_definitions(${PCL_DEFINITIONS})
|
| add_executable (segmentation segmentation.cpp)
| target_link_libraries (segmentation ${PCL_LIBRARIES})
| ```
| I've seen that using a makefile wasn't the best practice [1] (I
should move it
| to makevars). Since my CMakeFileLists is apparently simple (e.g.
compared to
| RInside examples), I guess I could move it to makevars however I'm
not familiar
| with cmake nor makevars, so I was wondering if there was
documentation about
| translating from one to the other. However I'm absolutely not sure
this is the
| real problem (using the CMakeLists.txt).
Writing Makefile code is yet another little skill one has to acquire
on the
side once projects get larger. There is a lot of support though, as
there
are plenty of examples.
Nothing really Rcpp-specific here.
Dirk
|
| (I'm using R version 2.15.2 (2012-10-26) on x86_64-pc-linux-gnu
(64-bit),
| building from RStudio.)
|
| Etienne
|
| [1]: http://stackoverflow.com/questions/12976036/
| how-to-use-usedynlib-correctly-in-an-r-package-namespace-file
|
|
|
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