--enable-memory-profiling at configuration (compilation) time?

| Dear Rfriends,
| 
| what is the option --enable-memory-profiling at configuration (just before build 
| + install) time?
| 
| I did not find mention of it in the R admin manual (http://cran.r-
| project.org/doc/manuals/R-admin.html).

Try the 'R Extensions' manual which discusses profiling, both for speed and
memory use, and the latter case requires this option (which we do enable by
default on Debian / Ubuntu).

Dirk

Three out of two people have difficulties with fractions.