[petsc-dev] make -j not supported? Why???

[Satish Balay]

There are 2 build modes - the old one - which is recurrsive make - and
does not support parallel build.

And there is a new one - based on cmake - which supports parallel make.

Our top level makefile supports both - and does not work with '-j'.

However if you have a cmake build - it does use paralell make. The
'-j' equivalent can be specified to configure via --with-make-np=
option or to 'make' with MAKE_NP variable. [Default is configure
autodetected value]

Satish

On Mon, 25 Feb 2013, Tim Tautges wrote:

> tautges at chronos:~/code/petsc-dev-moab$ make -j 8
> ********************* ERROR *************************
> Parallel build with 'make -j' is not supported
> ******************************************************
> make: *** [chk_makej] Error 1
> tautges at chronos:~/code/petsc-dev-moab$
> 
> 
> Why??? I can almost understand petsc's justification for its own
> autotools-looking python-based build system, but why its need to not support
> otherwise-standard make options?  Similarly, PETSC_MAKE_STOP_ON_ERROR instead
> of make -k?
> 
> - tim
> 
>