Hi Alan,
One caveat: Cygwin does not seem to have version 3.02 of CMake yet. Given the
specialisation of CMake for this platform, I wonder if this will be a problem.
Regards,
Arjen
Arjen Markus
Sr. Adviseur/Onderzoeker
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> -----Original Message-----
> From: Alan W. Irwin [mailto:[email protected]]
> Sent: Monday, September 29, 2014 7:33 PM
> To: PLplot development list
> Subject: [Plplot-devel] Looks like we are ready for CMake-3.0.2
>
> Andrew's recent commit concerning working around policy CMP0046 that allows
> CMake-3.0.2 to throw errors when the build system refers to non-existent
> targets had
> me concerned; ordinarily such non-existent targets are a symptom of a
> build-system
> bug so we don't really want to turn a blind eye to such issues.
>
> In this case it turned out the fix was trivial (commit 0cce536). Note that
> commit also
> sets CMP0046 to NEW to look for any future instances of such problems for
> those
> using CMake-3.0.2.
>
> As part of testing of this commit, I used CMake-3.0.2 fairly extensively with
> a build
> and install from scratch. There were no warnings concerning policies and no
> obvious
> install issues.
>
> So I am fairly confident that our developers and git users can use
> CMake-3.0.2 without running into any build-system issues. But to make
> absolutely
> sure there are no CMake-3.0.2 issues for our build system, from now on I plan
> to use
> CMake-3.0.2 for my own PLplot builds and tests, and I urge others here to do
> the
> same.
>
> Note we still set CMP0022, CMP0023, and CMP0026 policies to OLD. That is,
> those
> who use CMake-3.0.2 for PLplot builds and tests will be using it in 2.8.x
> compatibility
> mode for these particular policies.
> This is necessary because setting those policies to NEW would require some
> fairly
> extensive changes to our build system that rely on CMake functionality that
> is not
> available for our current minimum version of 2.8.9. So we will have to wait
> until our
> CMake minimum version is bumped to 3.0.2 to set these policies to NEW and fix
> all
> the corresponding issues with our build system to make it compatible with
> 3.0.2.
>
> Note that normally we use the rule of thumb that we bump the CMake minimum
> version to whatever is currently supported by Debian stable.
> Ordinarily, Debian stable is a little slower than other distros to adopt new
> CMake
> versions so this rule of thumb means that most of our Linux users (with the
> important
> exception of users of the so-called enterprise-class distros which typically
> use very
> old versions of all Linux software) will be able to build PLplot without
> needing to build
> CMake first. Also, note that Debian jessie, (the version of Debian that is
> being
> prepared to be the next Debian stable release) currently does install
> CMake-3.0.2.
> So I plan to do the bump of the minumum version to 3.0.2 and the corresponding
> build-system changes discussed above when Debian jessie becomes Debian stable
> which (based on past experience with Debian releases occurring every two
> years or
> so) should occur roughly a year from now.
>
> Alan
> __________________________
> Alan W. Irwin
>
> Astronomical research affiliation with Department of Physics and Astronomy,
> University of Victoria (astrowww.phys.uvic.ca).
>
> Programming affiliations with the FreeEOS equation-of-state implementation for
> stellar interiors (freeeos.sf.net); the Time Ephemerides project
> (timeephem.sf.net);
> PLplot scientific plotting software package (plplot.sf.net); the libLASi
> project
> (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the
> Linux Brochure
> Project (lbproject.sf.net).
> __________________________
>
> Linux-powered Science
> __________________________
>
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