[CMake] Build several libraries with different compilation flags
Hello everybody, I would like to build two libraries that contain the same files but with a slightly different set of compilation flags from one library to another. This within the same makefile. I was thinking about an approach such as: add_library(my_lib1, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) add_library(my_lib2, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) does cmake sensitive to the order of these instruction ? thank you very much Eric -- Eric Pellegrini Calcul Scientifique Insitut Laue-Langevin Grenoble, France ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] Build several libraries with different compilation flags
Look at the target properties instead of the source file properties. Ryan On 10/01/2010 08:27 AM, pellegrini wrote: Hello everybody, I would like to build two libraries that contain the same files but with a slightly different set of compilation flags from one library to another. This within the same makefile. I was thinking about an approach such as: add_library(my_lib1, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) add_library(my_lib2, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) does cmake sensitive to the order of these instruction ? thank you very much Eric -- Ryan Pavlik HCI Graduate Student Virtual Reality Applications Center Iowa State University Member, ACM and ACM SIGCHI Member, ASME http://academic.cleardefinition.com ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] Build several libraries with different compilation flags
Hi Ryan, Yes, that might be the solution if I wanted to change the compiler flags for the whole library but in my case, that is not on the whole library that I want to apply a new set of compiler flags but only on a small number of files. Ryan Pavlik a écrit : Look at the target properties instead of the source file properties. Ryan On 10/01/2010 08:27 AM, pellegrini wrote: Hello everybody, I would like to build two libraries that contain the same files but with a slightly different set of compilation flags from one library to another. This within the same makefile. I was thinking about an approach such as: add_library(my_lib1, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) add_library(my_lib2, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) does cmake sensitive to the order of these instruction ? thank you very much Eric -- Eric Pellegrini Calcul Scientifique Insitut Laue-Langevin Grenoble, France ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] Build several libraries with different compilation flags
Hi Eric, I'm not sure your solution is going to work. Once your file1, file2, ... are compiled for building my_lib1, there's reason for CMake to compile them again for my_lib2, because the object files are already up-to-date. I guess you'll have a better chance using target_properties, as Ryan suggested. HTH, Marcel Loose. On Fri, 2010-10-01 at 17:10 +0200, pellegrini wrote: Hi Ryan, Yes, that might be the solution if I wanted to change the compiler flags for the whole library but in my case, that is not on the whole library that I want to apply a new set of compiler flags but only on a small number of files. Ryan Pavlik a écrit : Look at the target properties instead of the source file properties. Ryan On 10/01/2010 08:27 AM, pellegrini wrote: Hello everybody, I would like to build two libraries that contain the same files but with a slightly different set of compilation flags from one library to another. This within the same makefile. I was thinking about an approach such as: add_library(my_lib1, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) add_library(my_lib2, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) does cmake sensitive to the order of these instruction ? thank you very much Eric ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] Build several libraries with different compilation flags
Hi Marcel, Yes, you are right but as I said to Ryan my problem is that I do not want to change the compiler flags for the whole library (in that case the set_target_properties would be the appropriated way to do) but only for a few files of my library. What I want to do seems tricky (or perhaps non sense ?). What about the following approach ? I will create two separate projects that I will call in my main CMakeLists.txt on the following way: project(my_whole_project Fortran) include(my_first_project) include(my_second_project) ... In doing so, each project does not see the other one (I hope) and I should be able to do whatever I want with one without disturbing the other. What do you think ?. Eric Marcel Loose a écrit : Hi Eric, I'm not sure your solution is going to work. Once your file1, file2, ... are compiled for building my_lib1, there's reason for CMake to compile them again for my_lib2, because the object files are already up-to-date. I guess you'll have a better chance using target_properties, as Ryan suggested. HTH, Marcel Loose. On Fri, 2010-10-01 at 17:10 +0200, pellegrini wrote: Hi Ryan, Yes, that might be the solution if I wanted to change the compiler flags for the whole library but in my case, that is not on the whole library that I want to apply a new set of compiler flags but only on a small number of files. Ryan Pavlik a écrit : Look at the target properties instead of the source file properties. Ryan On 10/01/2010 08:27 AM, pellegrini wrote: Hello everybody, I would like to build two libraries that contain the same files but with a slightly different set of compilation flags from one library to another. This within the same makefile. I was thinking about an approach such as: add_library(my_lib1, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) add_library(my_lib2, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) does cmake sensitive to the order of these instruction ? thank you very much Eric -- Eric Pellegrini Calcul Scientifique Insitut Laue-Langevin Grenoble, France ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] Build several libraries with different compilation flags
On Fri, Oct 1, 2010 at 8:32 AM, Marcel Loose lo...@astron.nl wrote: Hi Eric, I'm not sure your solution is going to work. Once your file1, file2, ... are compiled for building my_lib1, there's reason for CMake to compile them again for my_lib2, because the object files are already up-to-date. I guess you'll have a better chance using target_properties, as Ryan suggested. That's not really true... objects get built into target_name.dir ... so they are different. the problem is cmake only maintains a single list of sources, and the flags end up getting set for both versions. Really have to use target_properties ... or somehow invent a way to set_target_source_files_properties( target source ) maybe seperate the sources that need different flags into another library, and apply said flags to that target.. then link the whole mess together? HTH, Marcel Loose. On Fri, 2010-10-01 at 17:10 +0200, pellegrini wrote: Hi Ryan, Yes, that might be the solution if I wanted to change the compiler flags for the whole library but in my case, that is not on the whole library that I want to apply a new set of compiler flags but only on a small number of files. Ryan Pavlik a écrit : Look at the target properties instead of the source file properties. Ryan On 10/01/2010 08:27 AM, pellegrini wrote: Hello everybody, I would like to build two libraries that contain the same files but with a slightly different set of compilation flags from one library to another. This within the same makefile. I was thinking about an approach such as: add_library(my_lib1, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) add_library(my_lib2, STATIC, src_files ...) set_source_files_properties(file1, file2 ... PROPERTIES COMPILE_FLAGS ...) does cmake sensitive to the order of these instruction ? thank you very much Eric ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
