[R] src/Makevars ignored ?

[Jeff Newmiller]

You failed to read the Posting Guide, which would have told you which mailing list to post this question to. (Hint: not this one.)
-- 
Sent from my phone. Please excuse my brevity.

On September 26, 2016 4:46:06 AM PDT, Eric Deveaud <edeveaud at pasteur.fr> wrote:
>
>
>	Hello,
>
>as far as I understood the R library generic compilation mechanism, 
>compilation of C//C++ sources is controlde
>
>1) at system level by the ocntentos RHOME/etc/Makeconf
>2) at user level by the content of ~/.R/Makevars
>3) at package level by the content of src/Makevars
>
>Problem I have is that src/Makevars is ignored
>
>
>see following example:
>
>R is compiled and use the following CC and CFLAGS definition
>
>bigmess:epactsR/src > R CMD config CC
>gcc -std=gnu99
>bigmess:epactsR/src > R CMD config CFLAGS
>-Wall -g
>
>so building C sources lead to the following
>
>bigmess:epactsR/src > R CMD SHLIB index.c
>gcc -std=gnu99 -I/local/gensoft2/adm/lib64/R/include -DNDEBUG 
>-I/usr/local/include    -fpic  -Wall -g  -c index.c -o index.o
>
>normal, it uses defintion from RHOME/etc/Makeconf
>
>
>when I set upp a ~/.R/Makevars that overwrite CC and CFLAGS definition.
>
>bigmess:epactsR/src > cat ~/.R/Makevars
>CC=gcc
>CFLAGS=-O3
>bigmess:epactsR/src > R CMD SHLIB index.c
>gcc -I/local/gensoft2/adm/lib64/R/include -DNDEBUG 
>-I/usr/local/include 
>    -fpic  -O3 -c index.c -o index.o
>gcc -std=gnu99 -shared -L/usr/local/lib64 -o index.so index.o
>
>
>OK CC and CFLAGS are honored and set accordingly to ~/.R/Makevars
>
>
>but when I try to use src/Makevars, it is ignored
>
>bigmess:epactsR/src > cat ~/.R/Makevars
>cat: /home/edeveaud/.R/Makevars: No such file or directory
>bigmess:epactsR/src > cat ./Makevars
>CC = gcc
>CFLAGS=-O3
>bigmess:epactsR/src > R CMD SHLIB index.c
>gcc -std=gnu99 -I/local/gensoft2/adm/lib64/R/include -DNDEBUG 
>-I/usr/local/include    -fpic  -Wall -g  -c index.c -o index.o
>
>
>what I have missed or is there something wrong ?
>
>
>PS I tested the ssame behaviour with various version of R from R/2.15
>to 
>R/3.3
>
>	best regards
>
>	Eric
>
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