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
