Le jeu. 15 nov. 2018 à 09:47, Stéphane Ancelot <sance...@numalliance.com> a écrit :
> I agree. That was a debug snippet...but is wrong ... I setted up again the > toolchain, but does not help. > If you are using a proper toolchain for 32bit compilation. It looks like a bug in the find_package for Python in the cross-compiling case. Do you have a stripped down example which exhibit the issue? Which version of CMake are you using? > So, I know where are include_dirs and libs for 32 bits cross compiling, > I have to hardcode it like this ? > > add_library(python SHARED IMPORTED) > set_target_properties( python PROPERTIES IMPORTED_LOCATION /usr/lib32/ > libpython2.6.so ) > target_include_directories(python SYSTEM ... > I think you can do that but it replaces the use of find_package(Python2 COMPONENTS Development) may be fixing this would be a better long-term solution ? > > > Le 14/11/2018 à 17:53, Marc CHEVRIER a écrit : > > The way you proceed is wrong. > The system configuration is determined during the 'project' function call. > Setting information after this call is useless. So, in your example, on a > 64bit system, the compilation configuration will be 64bit (variable > CMAKE_SIZEOF_VOID_P has value 8). > This explain why 'FIND_LIBRARY_USE_LIB32_PATHS' has no effect. This > property is taken in consideration only on 32bit systems. > > Moreover, I am not sure that modifying variable 'CMAKE_SYSTEM_PROCESSOR' > is a valid action. > > To configure a 32bit compilation environment, two possibilities: > * using environment variables: env CFLAGS=-m32 CXXFLAGS=-m32 cmake ... > * using a toolchain file: see > https://cmake.org/cmake/help/v3.13/manual/cmake-toolchains.7.html > > > Le mer. 14 nov. 2018 à 14:06, Stéphane Ancelot <sance...@numalliance.com> > a écrit : > >> Hi, >> >> My system is 64 bits but I can cross compile python c modules for 32 bits >> . >> >> Unfortunately I don't manage to retrieve python 32 libs , always the 64 >> bits version is found. >> >> >> here is what I tried : >> >> cmake_minimum_required(VERSION 3.10) >> project(py_autom) >> >> >> set(CMAKE_SYSTEM_PROCESSOR "i686") >> >> set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -m32" CACHE STRING "c++ flags") >> set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32" CACHE STRING "c flags") >> >> set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB32_PATHS TRUE) >> set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS FALSE) >> >> include_directories(python2.6) >> find_package(Python2 COMPONENTS Development) >> >> >> >> message(STATUS "python ${PYTHON_INCLUDE_DIRS} ${Python2_LIBRARIES_DIR} >> ${Python2_FOUND}") >> >> Regards >> >> Steph >> -- >> >> 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: >> https://cmake.org/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: > https://cmake.org/mailman/listinfo/cmake > -- Eric
-- 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: https://cmake.org/mailman/listinfo/cmake
