[vtkusers] VTK updated to CMake 3.3 and C++11

Carlos Lopez rcourant at gmail.com
Thu Jan 19 14:07:53 EST 2017


The C++11 check is failing for me. I'm using CMAKE 3.6.2 on windows with
Visual studio Community 15.

Removing the check within cmake allows me to build without issues.

I'm building from gitlab's main repo, updated today.


On Wed, Jan 18, 2017 at 12:11 PM, Robert Maynard <robert.maynard at kitware.com
> wrote:

> I am happy to announce that over the last two weeks we have rolled out a
> series of updates to VTK that mean the minimum required CMake version
> is now 3.3 (see below), and now builds with C+11 enabled.
> Yes VTK now requires a C++11 capable compiler. Initial we are only asking
> for a
> minimal set of C++11 features (nullptr), but as continue forward through
> the
> year we are going require a larger set of C++11 features. The final exact
> versions for each compiler have not been set in stone, but a rough
> estimation
> would be:
>   - GCC 4.8+
>   - Clang 3.3+
>   - XCode 5.0+
>   - MSVC 2013+
> I wanted to send this announcement out to bring up a couple of points:
> 1. Thanks to everyone that has helped get VTK ready for C++11! The final
> CMake
> switch over to C++11 was very easy, only because of all the hard work that
> other
> developers did in anticipation of this. So thank you very much.
> 2. The major reason for this slow roll out of C++11 is so that we minimize
> the
> impact on current VTK merge requests, while also minimizing dashboard
> instability. Contributors please be aware of these changes if you have long
> running branches.
> 3. We currently have dashboard machines running GCC 4.6 & 4.7. We are
> currently
> working up a plan on how best to transition these machines to at least GCC
> 4.8
> as the roll out continues.
> 4. The current MinGW dashboard machine doesn't support C++11 and will be
> removed, with no plan of a replacement at Kitware. If the community is
> interested in maintaining a newer MinGW machine I can provide assistance
> on how to setup a machine.
> ============
> Why CMake 3.3:
> We have chosen CMake 3.3 as the minimum required version for numerous
> reasons,
> the most important of those reasons being:
> - It is the first CMake release that offers C++11 support for all four
> major
>   compilers ( GCC / MSVC / Clang / XCode ).
> - The CMake version is sufficiently new enough that it allows for a
> cleaning
>   of the existing CMake infrastructure. The current CMake minimum version
>   requires VTK to maintain forks of numerous FindPackages and Modules that
> are
>   part of newer CMake versions.
> - Supports HTTPS downloads, with all the official binaries come with
> support.
>   Allowing for migration of external data to a HTTPS only server.
> Something we
>   are going to require in the near future.
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