Calling Rscript from Makevars

Hi,
I've found this type of thing to be extremely confusing, myself, but I
managed to get something to work. I'm not sure how well. I also don't know
if R is running autoconf or just configure--at least I don't remember off
the top of my head. However, here are some examples of commands I put in my
configure.ac file: 
CC=`"${R_HOME}/bin/R" CMD config CC`
CXX=`"${R_HOME}/bin/R" CMD config CXX`
CFLAGS=`"${R_HOME}/bin/R" CMD config CFLAGS`
CXXFLAGS=`"${R_HOME}/bin/R" CMD config CXXFLAGS`
PKG_LIBS=`${R_HOME}/bin/Rscript -e "Rcpp:::LdFlags()"`
then you can use some preset commands such as:
AC_PROG_CC
or generic commands such as:
AC_SUBST(whateverVariableYouLike)
and make sure to put in the key command at the bottom before AC_OUTPUT:
AC_CONFIG_FILES([src/Makefile])
If R runs autoconf before ./configure when packaging or installing, you will
be fine with just the configure.ac. Otherwise you might have to run autoconf
before packaging. 
Anyway, what this will do is create a configure script when autoconf is run.
When ./configure is run by R when installing, it will execute replacement
commands on src/Makefile.in to generate the new Makefile.
Anything within two @ symbols will be replaced.
examples inside my Makefile.in:
CC = @CC@
CXX = @CXX@
I still haven't figured out how to do the Makevars thing, but I've
completely given up on R documentation. The key part from the R
documentation that I found useful was that it calls configure on install, so
you can use autoconf documentation to figure out how to set things up.
I'm sure I probably left out a ton of info, but those are my two cents.
Please feel free to ask me for more details if you are interested.
Good luck,
Sean

Calling Rscript from Makevars

Thread (13 messages)