[vtkusers] VTK updated to CMake 3.3 and C++11
robert.maynard at kitware.com
Thu Jan 19 14:15:22 EST 2017
A regression to the build system was merged in last night that broke
building with Visual Studio. A correction was just ( 15 minutes ago )
merged into VTK master that restores building with Visual Studio.
Sorry for the inconvenience.
On Thu, Jan 19, 2017 at 2:07 PM, Carlos Lopez <rcourant at gmail.com> wrote:
> 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
>> 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
>> 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
>> switch over to C++11 was very easy, only because of all the hard work that
>> 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
>> impact on current VTK merge requests, while also minimizing dashboard
>> instability. Contributors please be aware of these changes if you have
>> running branches.
>> 3. We currently have dashboard machines running GCC 4.6 & 4.7. We are
>> working up a plan on how best to transition these machines to at least GCC
>> 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
>> the most important of those reasons being:
>> - It is the first CMake release that offers C++11 support for all four
>> compilers ( GCC / MSVC / Clang / XCode ).
>> - The CMake version is sufficiently new enough that it allows for a
>> of the existing CMake infrastructure. The current CMake minimum version
>> requires VTK to maintain forks of numerous FindPackages and Modules that
>> part of newer CMake versions.
>> - Supports HTTPS downloads, with all the official binaries come with
>> 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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