-----Original Message-----
From: Alan W. Irwin [mailto:ir...@beluga.phys.uvic.ca]
Sent: Tuesday, August 01, 2017 5:02 AM
To: Arjen Markus
Cc: PLplot development list
Subject: Planning for the release of 5.13.0 --Cygwin Ada issue
On 2017-07-31 07:13-0000 Arjen Markus wrote:
Here are some results from my most recent, i.e. yesterday's, testing session.
Hi Arjen:
[...]
It turns out this is a long-standing issue, see your post from more than a year
ago
2016-03-17 Arjen Markus (21K) RE: comprehensive testing results on Cygwin -
Ada build errors
Forgot all about that. The script I use for cdash reports takes care of the
extra information needed for Ada, so I thought it worked fine.
However, I think I have a lot better understanding of the issue now, then I did
back
then.
...
So to test that possibility, please use the -DNON_TRANSITIVE=ON cmake option
for this test to see if (a) you get further with Ada, and (b) if that option
causes
issues for other parts of our comprehensive tests for the Cygwin platform. And
depending on what combination of (a) and (b) you obtain, I will take it from
there.
Very much the same thing: link errors concerning doubly defined
symbols.
Thanks for that tarball report. I double-checked with it
that the offending command line was very much shortened by the
above option, i.e., it is now
/usr/bin/gnatmake.exe -Wl,--enable-auto-import "-aI/cygdrive/d/plplot-svn/plplot-git/examples/ada"
"-aI/cygdrive/d/plplot-svn/plplot-git/bindings/ada"
"-aL/cygdrive/d/plplot-svn/comprehensive_test_disposeable/shared/noninteractive/build_tree/bindings/ada/CMakeFiles/plplotada.dir"
xtraditional13a.adb -cargs -largs ../../dll/libplplotada.dll.a ../../dll/libplplot.dll.a
with only the two directly needed libraries mentioned by the -cargs
-largs combination of options.
So the implementation of this idea was perfect, but (as you said) the
(bad) result is very much the same, sigh.
So I am going to make the official decision now to not investigate
this issue again until after the release. Which is good because
it simplifies our pre-release lives considerably. :-)
So document your launch script for Cygwin with a datestamped comment
about why you are disabling Ada, and you are done for now
with this Ada issue on Cygwin.
However, after the release you should build and comprehensively test a
good simple test case (i.e., see cmake/test_ada/README for
instructions about how to do that) on Cygwin, and then I would plan to
use your results for that as the basis of a bug report to Cygwin to
see if the Ada packager for that platform can figure out why your
build of that simple test case is (presumably) going wrong.
I have written up this testing idea in my post-release notes so there
should be no need to remind me about this idea then. :-)
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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