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List: cmake
Subject: Re: [CMake] C++11 flag not being added
From: Hendrik Sattler <post () hendrik-sattler ! de>
Date: 2015-10-16 9:56:12
Message-ID: 25FB9206-F66F-4FAA-B6AF-4C40FD6235AB () hendrik-sattler ! de
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Am 16. Oktober 2015 11:29:48 MESZ, schrieb Petr Bena <benapetr@gmail.com>:
> I think you completely misunderstood me. I know I can install it on my
> machine, but I can hardly install it on PC's or servers of users who
> use my program.
>
> I want to make it as easy as possible to let users compile my program.
> Having to install anything by hand instead of system package manager
> is a big overhead to majority of users. CMake 3x is too new, it's
Hey, 3.0.2 is even available in Debian stable, and that really says something about \
older versions!
> available by default almost nowhere, meaning this option is not
> available to me at this time. Maybe in few years the situation will
> change, but for now I will resort to that hack which works on older
> versions that are generally available everywhere.
>
> On Fri, Oct 16, 2015 at 11:26 AM, Pau Garcia i Quiles
> <pgquiles@elpauer.org> wrote:
> > Hello,
> >
> > CMake 3.3.1 is available from my PPA, in case it helps:
> >
> > https://launchpad.net/~pgquiles/+archive/ubuntu/ppa
> >
> >
> >
> > On Fri, Oct 16, 2015 at 10:58 AM, Petr Bena <benapetr@gmail.com>
> wrote:
> > >
> > > If I did that nearly nobody would be able to compile my program as
> > > cmake >= 3.1 is extremely rare on most distributions. Even ubuntu's
> > > PPA builder has some ancient version.
> > >
> > > On Fri, Oct 16, 2015 at 9:44 AM, Petr Kmoch <petr.kmoch@gmail.com>
> wrote:
> > > > Hi Petr.
> > > >
> > > > You're using a feature (`CMAKE_CXX_STANDARD`) introduced in CMake
> > > > version
> > > > 3.1, so you should require a minimum version >= that.
> > > >
> > > > You can learn the version of CMake by running `cmake --version`
> > > >
> > > > Petr
> > > >
> > > > On Thu, Oct 15, 2015 at 5:45 PM, Petr Bena <benapetr@gmail.com>
> wrote:
> > > > >
> > > > > What do you mean by "target" property? I don't see any target
> > > > > mentioned there. I don't have this line in there. I don't know
> which
> > > > > CMake this is, it failed on server we use for unit tests, but I
> have
> > > > > required min. version set to 2.8.7
> > > > >
> > > > >
> > > > >
> > > > > On Thu, Oct 15, 2015 at 5:41 PM, Matthew S Wallace
> > > > > <mwallace@ccmtrading.com> wrote:
> > > > > > What version of CMake are you using? I'm using 3.3.2. The
> only
> > > > > > other
> > > > > > thing I did was:
> > > > > >
> > > > > > set_property(GLOBAL PROPERTY CXX_STANDARD_REQUIRED)
> > > > > >
> > > > > > I'm guessing this probably does nothing since it is probably a
> target
> > > > > > property.
> > > > > >
> > > > > > -Matt
> > > > > >
> > > > > > > On Oct 15, 2015, at 10:34 AM, Petr Bena <benapetr@gmail.com>
> wrote:
> > > > > > >
> > > > > > > Can you elaborate on it a bit?
> > > > > > >
> > > > > > > I put set(CMAKE_CXX_STANDARD 11) as first line of my
> CMakeLists and
> > > > > > > it
> > > > > > > still doesn't work, without the hack I used I get errors while
> > > > > > > compiling.
> > > > > > >
> > > > > > > Can you give me example file in which it works? I guess there
> is
> > > > > > > more
> > > > > > > needed for it to work.
> > > > > > >
> > > > > > > On Tue, Oct 13, 2015 at 7:12 PM, Matthew S Wallace
> > > > > > > <mwallace@ccmtrading.com> wrote:
> > > > > > > > Thanks, setting the global variable solved my issue.
> > > > > > > >
> > > > > > > > -Matt
> > > > > > > >
> > > > > > > > > On Oct 13, 2015, at 10:46 AM, Johannes Zarl-Zierl
> > > > > > > > > <johannes.zarl-zierl@jku.at> wrote:
> > > > > > > > >
> > > > > > > > > Hi,
> > > > > > > > >
> > > > > > > > > CXX_STANDARD is a target property, not a global one. You can
> > > > > > > > > either
> > > > > > > > > set
> > > > > > > > > CXX_STANDARD for every target that needs it, or set it
> globally by
> > > > > > > > > changing
> > > > > > > > > the default value.
> > > > > > > > >
> > > > > > > > > You can do the latter by setting the variable
> CMAKE_CXX_STANDARD
> > > > > > > > > before
> > > > > > > > > defining any target that depends on it:
> > > > > > > > >
> > > > > > > > > set(CMAKE_CXX_STANDARD 11)
> > > > > > > > >
> > > > > > > > > HTH,
> > > > > > > > > Johannes
> > > > > > > > >
> > > > > > > > > On Tuesday 13 October 2015 10:22:36 Matthew S Wallace wrote:
> > > > > > > > > > I have the following two lines in my CMakeLists.txt
> > > > > > > > > >
> > > > > > > > > > set_property(GLOBAL PROPERTY CXX_STANDARD 11)
> > > > > > > > > > set_property(GLOBAL PROPERTY CXX_STANDARD_REQUIRED)
> > > > > > > > > >
> > > > > > > > > > However when compiling some of my source files, the
> -std=c++11
> > > > > > > > > > flag
> > > > > > > > > > is not
> > > > > > > > > > added.
> > > > > > > > > >
> > > > > > > > > > Just for good measure I added:
> > > > > > > > > > target_compile_features(my_target PRIVATE cxx_strong_enums)
> to
> > > > > > > > > > the
> > > > > > > > > > target
> > > > > > > > > > that was having the problem.
> > > > > > > > > >
> > > > > > > > > > Not sure if it matters, but in this case the compile error
> I'm
> > > > > > > > > > getting is
> > > > > > > > > > complaining because I'm referencing a fully scoped enum.
> If I
> > > > > > > > > > explicitly
> > > > > > > > > > include -std=c++11 in my compile flags, everything works.
> > > > > > > > > >
> > > > > > > > > > I'm thinking I'm probably just misunderstanding how
> CXX_STANDARD
> > > > > > > > > > works, but
> > > > > > > > > > any help would be appreciated.
> > > > > > > > > >
> > > > > > > > > > -Matt
> > > > > > > > >
> > > > > > > > > --
> > > > > > > > >
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> > > > > > > > >
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> > > > > > > > --
> > > > > > > >
> > > > > > > > Powered by www.kitware.com
> > > > > > > >
> > > > > > > > Please keep messages on-topic and check the CMake FAQ at:
> > > > > > > > http://www.cmake.org/Wiki/CMake_FAQ
> > > > > > > >
> > > > > > > > Kitware offers various services to support the CMake
> community. For
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> > > > > > > >
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> > > > > > > >
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> > > > > --
> > > > >
> > > > > Powered by www.kitware.com
> > > > >
> > > > > Please keep messages on-topic and check the CMake FAQ at:
> > > > > http://www.cmake.org/Wiki/CMake_FAQ
> > > > >
> > > > > Kitware offers various services to support the CMake community.
> For
> > > > > more
> > > > > information on each offering, please visit:
> > > > >
> > > > > CMake Support: http://cmake.org/cmake/help/support.html
> > > > > CMake Consulting: http://cmake.org/cmake/help/consulting.html
> > > > > CMake Training Courses: http://cmake.org/cmake/help/training.html
> > > > >
> > > > > Visit other Kitware open-source projects at
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> > > > >
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> > > >
> > > >
> > > --
> > >
> > > Powered by www.kitware.com
> > >
> > > Please keep messages on-topic and check the CMake FAQ at:
> > > http://www.cmake.org/Wiki/CMake_FAQ
> > >
> > > Kitware offers various services to support the CMake community. For
> more
> > > information on each offering, please visit:
> > >
> > > CMake Support: http://cmake.org/cmake/help/support.html
> > > CMake Consulting: http://cmake.org/cmake/help/consulting.html
> > > CMake Training Courses: http://cmake.org/cmake/help/training.html
> > >
> > > Visit other Kitware open-source projects at
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> > >
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> >
> >
> >
> >
> > --
> > Pau Garcia i Quiles
> > http://www.elpauer.org
> > (Due to my workload, I may need 10 days to answer)
> --
>
> Powered by www.kitware.com
>
> Please keep messages on-topic and check the CMake FAQ at:
> http://www.cmake.org/Wiki/CMake_FAQ
>
> Kitware offers various services to support the CMake community. For
> more information on each offering, please visit:
>
> CMake Support: http://cmake.org/cmake/help/support.html
> CMake Consulting: http://cmake.org/cmake/help/consulting.html
> CMake Training Courses: http://cmake.org/cmake/help/training.html
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Follow this link to subscribe/unsubscribe:
> http://public.kitware.com/mailman/listinfo/cmake
--
Powered by www.kitware.com
Please keep messages on-topic and check the CMake FAQ at: \
http://www.cmake.org/Wiki/CMake_FAQ
Kitware offers various services to support the CMake community. For more information \
on each offering, please visit:
CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html
Visit other Kitware open-source projects at \
http://www.kitware.com/opensource/opensource.html
Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake
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