further f77/gfortran
On Wed, 7 Jun 2006, Dirk Eddelbuettel wrote:
On 7 June 2006 at 11:44, Ben Bolker wrote:
| OK: despite Dirk's very kind help, I decided that
Yeah, kind but still not useful to you. No cigar yet :)
| trying to deal with R configuration and Debian configuration
| simultaneously was too difficult.
[ I'd still like to learn from useRs what I could do to make the Debian
package more appealing. Local rebuilds seems natural to me; I do that eg on
the Ubuntu boxen at work to combine 'stability' ('frozen' outer system) with
'current' apps where I need and what them. By keeping those within the
package management framework, I feel I combine the best of two worlds. YMMV. ]
| I did manage to solve my problem by reconfiguring/making/
| installing all of 2.3.1 from source:
|
| ./configure F77=/usr/bin/g77
| make
| make install
|
| A few questions inspired by this experience:
|
| (1) it seems a bit odd that R sets F77=gfortran
| by default, since the system has both g77 and gfortran
| compilers on it, and given that there is a separate
| variable (FC) for the Fortran 90/95 compiler --
| does it make any sense to switch
| the search order in configure so that g77 comes up first if present?
|
| (2) I couldn't figure out a way to set the F77 variable
| on a per-package basis: adding a src/Makevars file or a configure
| file to the package didn't seem to help, but perhaps I didn't
| put it in the right place/get it exactly right. Any clues?
That came up recently:
a) ~/.Makevars (as I recall)
~/.R/Makevars, but that applies to all packages on all builds.
b) on a per invocation basis: MAKEFLAGS="FFLAGS=-O1" R CMD INSTALL ... is something that worked for me.
Yes, but it only works in some Makes, including GNU Make.
That said, I personally still dislike that I cannot 'undo' the settings the R's global Makeconf. I'd love to turn debugging, optimisation, ... on/off on demand.
It might make sense to separate CFLAGS, FFLAGS, CXXFLAGS, FCFLAGS out of etc/Makeconf into a Makefile included before Makevars. But I am very reluctant to make it easy to change the F77 compiler or FLIBS or FPICFLAGS.
Brian D. Ripley, ripley at 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