How to find which compiler was used to compile R

Question

Is there an easy way to figure out the compiler used to compile R? Something like

$ R CMD which_compiler_was_used
GCC

Or from inside of R

> Sys.compiler()
[1] "GCC"

I know R CMD SHLIB somehow does the magic...

You can probably [find it here](https://github.com/wch/r-source). — Kenney, Nov 03 '15 at 22:39
You might be able to make use of the technique explained here: http://stackoverflow.com/a/9673793/12711 — Michael Burr, Nov 03 '15 at 22:41

score 8 · Accepted Answer · answered Nov 03 '15 at 22:45

8

Try this:

R CMD config CC

When I try it I get this:

gcc -m64

Note: Issue the R CMD config command without CC to find out about other information that it can provide.

answered Nov 03 '15 at 22:45

G. Grothendieck

Is it also possible to figure out the version of gcc that was used to build R? – Chris Jun 16 '21 at 14:47

1 Answers1