Re: mkoctfile and OpenMP

Kai Torben Ohlhus <[email protected]> Sun, 10 May 2020 16:48:07 +0900

Newsgroups	gmane.comp.gnu.octave.maintainers
Message-ID	<[email protected]>

On 5/9/20 10:09 PM, José Luis García Pallero wrote:
> Hello:
> 
> I've observed in Octave 5.2.0 (I don't know if it was present in
> previous versions) that mkocfile by default activates the OpenMP
> compatibility. Which is the reason for this behavior instead of the
> use of -fopenmp by the user as in gcc?
> 

mkoctfile is a wrapper for the system compiler (e.g. "gcc").

   mkoctfile -p CC
   gcc

Do you refer to the standard compiler flags of "mkoctfile", i.e., why is
"-fopenmp" set by default?

   mkoctfile -p ALL_CFLAGS
   -I/usr/include/octave-5.2.0/octave/..
-I/usr/include/octave-5.2.0/octave  -pthread -fopenmp -g -O2

Is there a reason not to use this flag by default?

Kai