parallel compilation does not work anymore

[Vincent Delecroix]

Dear all,

For the 9.3.beta2 release the command

$ MAKE="make -j3" make build

does not compile the Cython code of the sagelib in parallel.
This slows down a lot the build of the library. I am sure
when it stopped working.

Best
Vincent

[Dima Pasechnik]

On Wed, Dec 2, 2020 at 1:20 PM Vincent Delecroix

did you try "make -j3 build" ?

>
> Best
> Vincent
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[Eric Gourgoulhon]

I confirm: on my Ubuntu 20.04 machine, 

MAKE="make -j8" make

took ages to build 9.3.beta2 (from 9.3.beta1), exactly because the Cython part of sagelib.

I have not noticed such an issue with 9.3.beta1.

Eric.

[Zachary Scherr]

Just wanted to add that make -j8 doc is also not building in parallel.

[Matthias Koeppe]

Broken by https://trac.sagemath.org/ticket/30627, 

fixed by https://trac.sagemath.org/ticket/30995 (needs review)