Aha, I see. You're using find_package. That will automatically get you the binaries for your host system.
My problem is different, I need to build my binaries with CMake before using them, and I need to build them with i686 (instead of arm). Regards /R From: portolan [mailto:[email protected]] Sent: den 10 oktober 2016 13:14 To: Robert Bielik <[email protected]>; [email protected] Subject: Re: [CMake] Crosscompilation woes It is pretty much standard. I wrote the toolchain file adapting different examples. the Cmakelist is for the subdirectory of my parser (called SIT_parser). The trick si that I use a custom command for Lex/Yacc, so even when cross-compiling it is still correctly called. Michele Le 10/10/2016 à 12:48, Robert Bielik a écrit : Ok, I cannot get this to work. The source files to be generated with add_custom_command have property GENERATED set to ON, but cmake does not adhere, and tries to use the tool binaries of the target system. Michele, would you be ok with sharing your cmake code for this particular bit ? Regards /R From: portolan [mailto:[email protected]] Sent: den 10 oktober 2016 11:33 To: Robert Bielik <[email protected]><mailto:[email protected]>; Craig Scott <[email protected]><mailto:[email protected]> Cc: [email protected]<mailto:[email protected]> Subject: Re: [CMake] Crosscompilation woes I cannot answer your question: I am a newcomer to Cmake (I have been using it for less than 6 months) and on my build system I have 3.6, so I never really looked at the previous versions. Sorry, Michele Le 10/10/2016 à 11:30, Robert Bielik a écrit : Thank you Michele, This is exactly what I'm after. You specify cmake v3.6 docs ? Is it only working from 3.6.x ? I have 3.5.2 on my build system. Regards /Robert From: portolan [mailto:[email protected]] Sent: den 10 oktober 2016 11:27 To: Robert Bielik <[email protected]><mailto:[email protected]>; Craig Scott <[email protected]><mailto:[email protected]> Cc: [email protected]<mailto:[email protected]> Subject: Re: [CMake] Crosscompilation woes In my project I build on Linux i686 and I use a Toolchain file to specify the ARM cross-compiler https://cmake.org/cmake/help/v3.6/manual/cmake-toolchains.7.html The nice thing is that if you mark some files as "generated" CMAKE will automatically use the build rather than the target toolchains. For instance, I have a Flex/Byson compiler that is generated locally on i686 , but then compiled for ARM. Regards, Michele Le 10/10/2016 à 11:10, Robert Bielik a écrit : Thanks Craig, Your solution will work for me I think. Regards /R From: Craig Scott [mailto:[email protected]] Sent: den 10 oktober 2016 10:47 To: Robert Bielik <[email protected]><mailto:[email protected]> Cc: [email protected]<mailto:[email protected]> Subject: Re: [CMake] Crosscompilation woes Here's one possible solution (not perfect, but has been working in production for us for a while now for a similar scenario to what you describe): http://stackoverflow.com/q/36084785/1938798 An alternative is a superbuild arrangement which would require a top level project to drive two sub-builds brought in via ExternalProject<https://cmake.org/cmake/help/latest/module/ExternalProject.html>, one for the host and the other for arm. This is both better and worse, depending on your point of view, so you may need to do some research/experimenting to see which is a better fit for your situation. On Mon, Oct 10, 2016 at 7:29 PM, Robert Bielik <[email protected]<mailto:[email protected]>> wrote: Hi all, I am crosscompiling a project for arm (on linux i686), and use codegeneration tools within the project (together with add_custom_command). Of course, this will fail, since the tools are compiled for arm also and thus won't execute on my host system. So the tools need to be compiled for i686 whilst the rest for arm. I'm sure this can be handled by CMake although haven't done it before so would appreciate pointers :) Regards /Robert -- Powered by www.kitware.com<http://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 -- Craig Scott Melbourne, Australia https://crascit.com
-- 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
