Hi. To jp, look at cmake properties CXX_STANDARD, CXX_STANDARD_REQUIRED, CXX_EXTENSIONS.
[https://cmake.org/cmake/help/v3.4/manual/cmake-properties.7.html](https://lin k.nylas.com/link/ac7n0u7eu8cj6vjow9ajimqdr/4174df36c5bf4561b73f89e228f5d608/0? redirect=https%3A%2F%2Fcmake.org%2Fcmake%2Fhelp%2Fv3.4%2Fmanual%2Fcmake- properties.7.html) But I don't know is that exist in old cmake version.  > On март 17 2016, at 2:46 дня, jp charras <[email protected]> wrote: > > Le 17/03/2016 10:23, Nick Østergaard a écrit : > 2016-03-17 10:15 GMT+01:00 jp charras <[email protected]>: >> Le 10/03/2016 08:30, Simon Richter a écrit : >>> >>> This enables C++11 support, if either CMake is sufficiently new to have >>> this feature built in, or the compiler is supported by the workaround code >>> (gcc or clang). >>> \--- >>> CMakeLists.txt | 23 +++++++++++++++++++++++ >>> 1 file changed, 23 insertions(+) >> >> After a few tests: >> >> I can compile Kicad on W7 32 bits + msys2 and Kubuntu 14.04 LTS with option >> -std=gnu++11 >> and on W7 32 bits (on Kubuntu the compiler version is too old) >> -std=gnu++14 > > Is that kubuntu machine updated? > > Of course, yes. But it uses the gcc 4.9 version, which does not support gnu++14. > > Did it build with -std=c++11 on > kubuntu 14.04 LTS? > >> >> but on W7 32 bits the option >> -std=c++11 >> does not work (compil errors) > > I think I tested Simon's original patch on msys2 on 64 and it seemed > to work. What errors do you see? > >> >> Therefore, with gcc: >> -std=gnu++11 is OK >> -std=c++11 is not acceptable >> >> (This is not the first time i have issues with option -std=c++11 or >> -std=c++14 and no issue with -std=gnu++11 or -std=gnu++14) >> >> >> \-- >> Jean-Pierre CHARRAS > > After more tests: > > \- During my first test, I did not applied the patch. I just forced the option -std=c++11 when calling cmake. > > I had some issues (like M_PI dot defined, although math.h was included, and more other issues) > > \- After your response, I applied the patch. and I was able to build Kicad. > > \- Because this is a bit strange, I had a look at this issue: Although there is in this patch the line: "set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")" when make is run the actual option (try make VERBOSE=1) is "-std=gnu++11" > > So no more mystery, as I wrote: -std=gnu++11 works, -std=c++11 does not work. > > I am saying "no more mystery", but this is not fully true: the option "set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")" becomes actually: "set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")" > > And this change is a mystery, at least for me (but I have a poor knowledge of cmake). > > \-- Jean-Pierre CHARRAS > > _______________________________________________ Mailing list: https://launchpad.net/~kicad-developers Post to : [email protected] Unsubscribe : https://launchpad.net/~kicad-developers More help : https://help.launchpad.net/ListHelp
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