#11959: build spkgs in parallel by default
---------------------------+------------------------------------------------
Reporter: jhpalmieri | Owner: GeorgSWeber
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-4.7.3
Component: build | Keywords: SAGE_PARALLEL_SPKG_BUILD MAKE -j
--jobs
Work_issues: | Upstream: N/A
Reviewer: | Author: John Palmieri
Merged: | Dependencies:
---------------------------+------------------------------------------------
Comment(by leif):
Replying to [comment:9 leif]:
> (Or provide some [other] way to enable and disable that feature -- by an
environment variable or an easier command; the only odd thing is that
`deps` is under revision control and hence you get uncommitted changes in
the ''Sage root repository'' :-) whenever that file is modified. As an
alternative, we could include some other "temporary" or volatile
[make]file which is in `.hgignore`, and is either empty or contains just
`.NOTPARALLEL`.)
We could easily achieve that by changing `spkg/install` to
{{{
#!sh
...
if [[ ${SAGE_PARALLEL_SPKG_BUILD:-yes} = no ]]; then
# Disable just building multiple packages at the same time; individual
# spkgs still get built in parallel if they support it and '--jobs'
# in $MAKE is greater than one (and at all specified):
echo ".NOTPARALLEL:" > "$SAGE_ROOT"/spkg/standard/parallel_make.cfg
else
# Create an (almost) empty file, s.t. including it from
spkg/standard/deps
# doesn't raise an error, thereby also invalidating any previous
setting:
echo > "$SAGE_ROOT"/spkg/standard/parallel_make.cfg
fi
time ${MAKE:-make} -f standard/deps $1
...
}}}
adding `spkg/standard/parallel_make.cfg` to `$SAGE_ROOT/.hgignore`, and
adding the line
{{{
#!make
include parallel_make.cfg
}}}
to `spkg/standard/deps`.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11959#comment:10>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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