Julien Puydt wrote:
Hi,

I'm making experiments building sage with a mix of spkg / system
packages ; things are starting to take shape, and I'm now able to finish
the 'build' step.

For the 'doc' step, I get a strange behaviour : the doc seems to build
correctly, but then at some point, it tells me the build was a success
in a directory... and it just sits there. Nothing happens anymore. No
error, no warning. I see the processes in top and they look happy. I'm
pretty sure 'fine' would be a better word, but 'happy' looks more
descriptive and funnier: they obviously enjoy running!

First of all:

 * I'm pretty sure processes can be happy while asleep as well.

* What Sage version is this based on? (And which spkgs did you "replace" by system ones? Versions?)

 * What platform (OS, CPU)?


I first thought it could be some kind of threading issue where several
processes were waiting for access to some cache, but it also happens
with SAGE_NUM_THREADS set to 1.

AFAIK, docbuilding currently uses Python's multiprocessing even if SAGE_NUM_THREADS=1; cf. Stephen Montgomery's (apparently similar) problems on FreeBSD (see some neighbour thread).

Did you use the fixed libGAP spkg from #14323 [1]?

At which point of docbuilding does it "stop"? Does it reproducibly "stop" at the same point? Did you try running 'sage --docbuild ...' (as opposed to 'make doc') instead?


-leif


Does somebody have an idea what happens? What I could try to test?

Snark on #sagemath


[1] http://trac.sagemath.org/sage_trac/ticket/14323

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