On Friday, June 2, 2017 at 2:01:25 AM UTC-7, François wrote: > > > Actually there has been some work on enabling sage to be built and > installed in a prefix that isn’t under SAGE_ROOT. This is why we now > have sage-env-config. > So you could do a run of configure of sage with python2 and install it > in $prefix_python2 and then do the same for python3 but install it > in $prefix_python3. Out of the same source tree. > Some cleaning may be required between builds, I haven’t actually worked > on the functionality myself. > > In addition to the recently implemented feature `./configure --prefix=...` that you mention above, we would also need out-of-tree builds (VPATH builds); this is the standard autotools mechanism for having several build configurations from one source tree. (No cleaning in between builds will be required with this method; the source tree is always clean.) There is initial work in this direction on this ticket: https://trac.sagemath.org/ticket/21469 (it needs rebasing and updating).
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