On Fri, 12 Jun 2009, Allan Engelhardt wrote:
Is there an easy way to override the compile options when installing packages
from CRAN on Unix-style systems? I tried setting CFLAGS, CXXFLAGS, and
FFLAGS but they are not picked up.
For example (with a random package and adding -mtune only to try to get rid
of the default)
export CFLAGS="-march=native -mtune=native"
export CXXFLAGS="-march=native -mtune=native"
R CMD INSTALL gstat_0.9-60.tar.gz
[...]
gcc -m64 -std=gnu99 -I/usr/include/R -I/usr/local/include -fpic -O2 -g
-pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector
--param=ssp-buffer-size=4 -m64 -mtune=generic -c block.c -o block.o
[...]
I am building a custom system and I'd like to get rid of '-g' (won't debug on
that system) and change '-mtune=generic' to '-march=native' (don't need
compatibility with other systems).
Is there an easy way of doing this for all packages I build?
Yes: read 'R Installation and Administration' section 6.3.3 (at least
of the version on CRAN).
Also, it seems likely that you should be building R itself with the
options you want for packages: how to do that is discussed in the same
manual. (Looks like this may be a pre-compiled Linux binary
distribution of R, but we don't know, of course.) In that case you
don't need to set anything else.
Allan
(Currently re-compiling BLAS and friends with -march=native.)
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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