#13540: Automatically detect and test optional dependencies.
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Reporter: robertwb | Owner: mvngu
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.6
Component: doctest | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Robert Bradshaw | Merged in:
Dependencies: | Stopgaps:
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Comment (by leif):
Replying to [comment:17 robertwb]:
> For all intents and purposes, at the moment, gcc really means gcc. And
building a Cython extension with a different compiler than Python was
compiled with (and the relevant libraries, for C++ in particular) gets
really messy.
We might then even use Python's / distutils' settings for testing tool
availability (although there's no variable for the Fortran compiler
AFAIK). Not sure what to do with bdists (in case they don't contain a
pre-built GCC as well).
[[BR]]
> In any case, the point of this ticket is to introduce a framework that
lets us test optional doctests automatically, as they the current setup
means they're never tested and so quickly broken. We could do something
more sophisticated with CC, etc. but gcc, at the very least, provides a
common enough dependency to actually exercise this code for most (probably
all) developers (and it's not near as brittle as others).
Yes. Nevertheless, I don't think I'm the only one that almost always sets
`CC`, `CXX` etc., in order to use ''different versions of GCC''.
Support for other compilers (e.g. `clang`), probably also flags to pass,
is certainly out of the scope of this ticket. (It would be convenient to
have something like `config.status`, i.e., a mechanism for storing and
restoring the build environment, and/or also a "`.sagerc`" local /
specific to the ''Sage installation'', one overriding the other...)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13540#comment:18>
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