[Rcpp-devel] Advice on installing CHOLMOD/Suitesparse

[Dirk Eddelbuettel]

On 31 August 2012 at 12:08, Douglas Bates wrote:
| On Fri, Aug 31, 2012 at 11:35 AM, Rodney Sparapani <rsparapa at mcw.edu> wrote:
| > Actually, it is not mysterious.  I just checked it with R 2.15.1
| > and, if you build it with a blank CPPFLAGS in your environment, then
| > within $RHOME/etc/Makeconf CPPFLAGS is blank as well.  So, as I say,
| > the problem was self-inflicted since our standard set up had
| > CPPFLAGS=-I/opt/local/include
| 
| No.  It's in the configure script for R
| 
| ## We provide these defaults so that headers and libraries in
| ## '/usr/local' are found (by the native tools, mostly).
| if test -f "/sw/etc/fink.conf"; then
|   : ${CPPFLAGS="-I/sw/include -I/usr/local/include"}
|   : ${LDFLAGS="-L/sw/lib -L/usr/local/lib"}
| else
|   : ${CPPFLAGS="-I/usr/local/include"}
|   : ${LDFLAGS="-L/usr/local/${LIBnn}"}
| fi

Rodney is correct here, Doug. The ':' makes it use this only iff no value has
been set.  So 'our' systems don't have it:

   edd at max:~$ grep "^CPPF" /etc/R/Makeconf /usr/local/lib/R-devel/lib/R/etc/Makeconf
   /etc/R/Makeconf:CPPFLAGS =                                                                                                  
   /usr/local/lib/R-devel/lib/R/etc/Makeconf:CPPFLAGS = -I/usr/local/include

because 

   edd at max:~$ grep CPPFL src/debian/R/R-2.15.1/debian/rules
        CPPFLAGS=                                       \
   edd at max:~$  

I tell the Debian build to use an empty CPPFLAGS (and that setting has
probably been like that for many years).  My own local build of R-devel
has it set because I didn't override it.

-- 
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com