Re: [CMake] Visual Studio 12 C++ Compiler Detection
> So, it appears to find the compiler OK since it emits the correct compiler > identification. But, the actual value of CMAKE_CXX_COMPILER is not usable. If > you try to execute > C:/Program…./x86_amd64/cl.exe from within a CMake script or even from the > command line, it will fail and produce the well-known “0xc07b” dialog > (missing DLL). Unless you’ve sourced > vcvarsx86_amd64.bat, the correct > environment variables are not set for this version of the compiler. > On the other hand, if I do “cmake –G NMake Makefiles”, I get what I expect: > Namely, it finds C:/Program…./amd64/cl.exe. > I would like to see how it is coming up with this version of the compiler > which isn’t even in the PATH. Hi Allen, CMake does not pay attention to the PATH when you ask for VisualStudio generator. It simply finds it using it's internal logic. The generated projects are suitable for opening in the IDE. The NMake generator behaves much more like Unix Makefiles generator, so it is sensitive to the environment variables and remembers all variables it needs. -- Gruesse, Jakub -- 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
Re: [CMake] Visual Studio 12 C++ Compiler Detection
Hi Jakub: Thanks for the tip. What is the proper way to execute the compiler during the initial configure step? try_compile? Thanks, Allen > So, it appears to find the compiler OK since it emits the correct compiler > identification. But, the actual value of CMAKE_CXX_COMPILER is not usable. If > you try to execute > C:/Program…./x86_amd64/cl.exe from within a CMake script or even from the > command line, it will fail and produce the well-known “0xc07b” dialog > (missing DLL). Unless you’ve sourced > vcvarsx86_amd64.bat, the correct > environment variables are not set for this version of the compiler. > On the other hand, if I do “cmake –G NMake Makefiles”, I get what I expect: > Namely, it finds C:/Program…./amd64/cl.exe. > I would like to see how it is coming up with this version of the compiler > which isn’t even in the PATH. Hi Allen, CMake does not pay attention to the PATH when you ask for VisualStudio generator. It simply finds it using it's internal logic. The generated projects are suitable for opening in the IDE. The NMake generator behaves much more like Unix Makefiles generator, so it is sensitive to the environment variables and remembers all variables it needs. -- 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
Re: [CMake] Visual Studio 12 C++ Compiler Detection
If anyone is interested, it turns out that visual studio 2013 prefers the 32-bit cross compiler. You can set the environment variable PreferredToolArchtecture=x64 to get the native 64-bit compiler (say, before you run CMake). Some discussion is here: https://connect.microsoft.com/VisualStudio/feedback/details/800059/isnativeenvironment-true-no-longer-works-on-visual-studio-2013-rc Allen > -Original Message- > From: CMake [mailto:cmake-boun...@cmake.org] On Behalf Of Allen > Barnett > Sent: Friday, December 05, 2014 9:06 AM > To: Jakub Zakrzewski > Cc: cmake@cmake.org > Subject: Re: [CMake] Visual Studio 12 C++ Compiler Detection > > Hi Jakub: Thanks for the tip. What is the proper way to execute the compiler > during the initial configure step? try_compile? > > Thanks, > Allen > > > So, it appears to find the compiler OK since it emits the correct > > compiler identification. But, the actual value of CMAKE_CXX_COMPILER is > not usable. If you try to execute C:/Program…./x86_amd64/cl.exe from > within a CMake script or even from the command line, it will fail and > produce the well-known “0xc07b” dialog (missing DLL). Unless you’ve > sourced > vcvarsx86_amd64.bat, the correct environment variables are not > set for this version of the compiler. > > > On the other hand, if I do “cmake –G NMake Makefiles”, I get what I > expect: > > > Namely, it finds C:/Program…./amd64/cl.exe. > > > I would like to see how it is coming up with this version of the compiler > which isn’t even in the PATH. > > Hi Allen, > > CMake does not pay attention to the PATH when you ask for VisualStudio > generator. It simply finds it using it's internal logic. The generated > projects > are suitable for opening in the IDE. > The NMake generator behaves much more like Unix Makefiles generator, so > it is sensitive to the environment variables and remembers all variables it > needs. > > > -- > > 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
