Re: [cmake-developers] Make it easier for beginners

[Wesley Smith]

I agree that if you do a search for how to setup a project with cmake, it's
hard to know what's best practice.  As cmake has evolved, the best practice
has changed and many old style techniques still return toward the top of
search results.  For me, the best resources have been:

http://preshing.com/20170522/learn-cmakes-scripting-language-in-15-minutes/
https://www.youtube.com/watch?v=bsXLMQ6WgIk

I still don't understand the scoped syntax in Daniel Pfeifer's talk (e.g.
boost::boost).  And CPack was really opaque to me until I bought the cmake
book.  I wish there were better tutorials on CPack and on how to write
cmake scripts that play well as dependencies on other projects using cmake.

wes


On Sun, Oct 22, 2017 at 12:08 PM, Bill Hoffman 
wrote:

> On 10/21/2017 10:56 AM, Lectem wrote:
>
>> _Question :_ Would it possible to delete the wiki, or reset/reopen it ?
>>
>> _Reason:_ The wiki is full of old stuff, but we can't register to edit
>> stuff. Still, people willing to learn will end up visiting it, thinking it
>> gives good advice. "How could it not ? It's the official wiki". At the very
>> least I wish we could add a big red message stating it is outdated and not
>> updated anymore.
>>
>> The wiki is still open.  If people want to edit they have to send an
> email and let us know what they want to do.  It was too hard to keep the
> spam off of it otherwise.  So, send me an email off list and I can get you
> setup with a wiki account.
>
> -Bill
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Re: [cmake-developers] Need more information concerning the Trilinos test of CMake

[Rolf Eike Beer]

> I notice in
>  there is
> an unstage comment from you.  Just out of curiosity, does that mean
> that commit was effectively immediately removed from
> stage/master/head?

Yes.

Eike

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Re: [cmake-developers] Need more information concerning the Trilinos test of CMake

[Alan W. Irwin]

On 2017-10-25 07:03-0400 Brad King wrote:


On 10/24/2017 05:47 PM, Alan W. Irwin wrote:

Since I essentially never get CMake build errors when building
CMake by hand using the bootstrap method, I assume these build
errors are due to some issue with how I set up my_dashboard.cmake.


The difference is that the script is testing the nightly stage of
in-flight topics that have not yet landed in `master`.  You just
happened to run this for the first time on one of the occasional
nights that compiler errors were introduced.


Hi Brad:

Yes, I sure picked the exact moment of the day where my dashboard was
the first to show the build error for g++ versions of 4.9 or less,
but, of course, a number of other old compiler sites followed at the
times when they completed their nightly tests.

I notice in
 there is
an unstage comment from you.  Just out of curiosity, does that mean
that commit was effectively immediately removed from
stage/master/head?

In any case, my dashboard submission is working now using

ctest -S ~/cmake/Dashboards/Scripts/CMakeScripts/my_dashboard.cmake -VV

See the raven-without-fixed-IP Experimental results at
 and 
.  These results are

perfect other than one CMake configure warning due to a minor system
issue (misspelled COPYONLY as COPY_ONLY) with Debian Jessie Qt5 which
I encounter for all my builds of cmake by hand and which has long
since been fixed for more modern versions of Qt5.

So what is the next step toward the goal of adding a test consisting
of a build of PLplot?

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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Re: [cmake-developers] Need more information concerning the Trilinos test of CMake

[Brad King]

On 10/24/2017 05:47 PM, Alan W. Irwin wrote:
> Since I essentially never get CMake build errors when building
> CMake by hand using the bootstrap method, I assume these build
> errors are due to some issue with how I set up my_dashboard.cmake.

The difference is that the script is testing the nightly stage of
in-flight topics that have not yet landed in `master`.  You just
happened to run this for the first time on one of the occasional
nights that compiler errors were introduced.

> set(CTEST_SITE "raven home computer")

Please use a name with no spaces.

> Also, as you can see above I did not specify
> CTEST_BUILD_CONFIGURATION, but unlike normal builds it appears for
> this script that the Debug configuration is the default.  How do I
> turn that off?

What configuration do you want to build?  Just

  set(CTEST_BUILD_CONFIGURATION Release)

will build the Release config.

-Brad
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Re: [cmake-developers] Need more information concerning the Trilinos test of CMake

[Brad King]

On 10/24/2017 05:10 PM, Alan W. Irwin wrote:
> It appears cmake_common.cmake only provides the capability of changing
> the --parallel option for the bootstrap script.  Must I change that
> script in order to specify additional bootstrap options I normally use
> such as --qt-gui --system-curl or is there a less brute-force
> way to specify bootstrap options?

Use the `dashboard_cache` option to initialize the cache with the
desired options rather than having the bootstrap script do it.

-Brad
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Re: [cmake-developers] Need more information concerning the Trilinos test of CMake

[Brad King]

On 10/25/2017 04:46 AM, Rolf Eike Beer wrote:
> This very much looks like a change I had in a few weeks ago but removed 
> from there because of exactly those compile failures.

This is all under discussion here:

  https://gitlab.kitware.com/cmake/cmake/merge_requests/1402

The errors this time are slightly different but due to similar
limitations on older compilers.

> Just make this file static variables

Good idea, thanks.

-Brad
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Re: [cmake-developers] Need more information concerning the Trilinos test of CMake

[Rolf Eike Beer]

Am 2017-10-25 02:24, schrieb Alan W. Irwin:

@Matthias:

I am directly addressing you in this post because git bisect says your
recent commit is the first one that shows this issue.  More details 
below.



commit 49287eed2bf9860919a155af848e7cf49d45f504
Author: Matthias Maennich 
Date:   Mon Oct 9 16:25:52 2017 +0200

CommandArgumentParser: avoid strcpy usage

as the first commit that had the bootstrap issue.


This very much looks like a change I had in a few weeks ago but removed 
from there because of exactly those compile failures. This works fine 
with newer gcc and apparently Clang versions, but older compilers do not 
like it.


Looking on that code again: I don't think it is needed to have anything 
of that in the class. Just make this file static variables:


static const char EmptyVariable[] = "";
static char DCURLYVariable[3] = "${";

and then drop those members from the class entirely. Maybe make them 
static variables in the class and initialize them in the cxx file if it 
is needed to have them in the class. But I don't see no reason to have 
them as writable, instance specific class members as those values will 
never change.


Eike
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