On 1 October 2013 at 09:02, Dirk Eddelbuettel wrote:
| On 1 October 2013 at 22:37, Gad Abraham wrote:
| | Is there a list of which of the Makevars variables are evaluated, i.e., ones
| | that I can declare as backticks for conditional results. For example, I'd
like
| | to be able to declare an environment variable during package installation,
| | e.g.:
| |
| | USE_OPENCL=yes R CMD INSTALL package
| |
| |
| | but neither
| | PKG_CPPFLAGS += `if ! [ -z $(USE_OPENCL) ]; then echo '-DUSE_OPENCL'; fi`
| | nor
| | PKG_CXXFLAGS += `if ! [ -z $(USE_OPENCL) ]; then echo '-DUSE_OPENCL'; fi`
| |
| | seems to work.
|
| That seems a little fragile. I would try this in src/Makevars, which use the
| Make language (which also inherits environment variables as I dimly recall)
| but can also execute shell snippets.
Upon a second look, I suspect all you really want is to prefix 'R CMD INSTAL
...'
with a direct argument to, say, PKG_CXXFLAGS.
Here is a quick example from one of my smaller packages:
edd@max:~/svn/rcpp/pkg$ R CMD INSTALL RcppXts_0.0.4.1.tar.gz
* installing to library ‘/usr/local/lib/R/site-library’
* installing *source* package ‘RcppXts’ ...
** libs
ccache g++-4.7 -I/usr/share/R/include -DNDEBUG
-I"/usr/local/lib/R/site-library/Rcpp/include"
-I"/usr/local/lib/R/site-library/xts/include" -fpic -g -O3 -Wall -pipe
-Wno-unused -pedantic -c xtsMod.cpp -o xtsMod.o
g++-4.7 -shared -o RcppXts.so xtsMod.o
-L/usr/local/lib/R/site-library/Rcpp/lib -lRcpp
-Wl,-rpath,/usr/local/lib/R/site-library/Rcpp/lib -L/usr/lib/R/lib -lR
installing to /usr/local/lib/R/site-library/RcppXts/libs
** R
** inst
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
* DONE (RcppXts)
edd@max:~/svn/rcpp/pkg$ PKG_CXXFLAGS=-DUSE_OPENCL R CMD INSTALL
RcppXts_0.0.4.1.tar.gz
* installing to library ‘/usr/local/lib/R/site-library’
* installing *source* package ‘RcppXts’ ...
** libs
ccache g++-4.7 -I/usr/share/R/include -DNDEBUG
-I"/usr/local/lib/R/site-library/Rcpp/include"
-I"/usr/local/lib/R/site-library/xts/include" -DUSE_OPENCL -fpic -g -O3
-Wall -pipe -Wno-unused -pedantic -c xtsMod.cpp -o xtsMod.o
g++-4.7 -shared -o RcppXts.so xtsMod.o
-L/usr/local/lib/R/site-library/Rcpp/lib -lRcpp
-Wl,-rpath,/usr/local/lib/R/site-library/Rcpp/lib -L/usr/lib/R/lib -lR
installing to /usr/local/lib/R/site-library/RcppXts/libs
** R
** inst
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
* DONE (RcppXts)
edd@max:~/svn/rcpp/pkg$
See how the -DUSE_OPENCL carries through? (It doesn't do anything for my
package, but your get the idea.) R even strips quotes, so you can also say
$ PKG_CXXFLAGS="-DUSE_OPENCL" R CMD INSTALL
instead of
$ PKG_CXXFLAGS=-DUSE_OPENCL R CMD INSTALL
You can glance at the file $(R_HOME)/etc/Makeconf to see the other PKG_*
variables.
Hth, Dirk
--
Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com
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