Or simply specify -m32 at the first configure CFLAGS=-m32 CXXFLAGS=-m32 cmake ../src
find_library() works correctly if you do that, and it automatically detects if the 32 bit libraries are in /usr/lib32 or /usr/lib. Clint ----- Original Message ----- > Hello, > > On 15/02/13 15:41, Martin Koller wrote: > > I'm just not sure if it is enough to change the compiler flags or if > > there is more to change (paths etc.) > This is why I prefer toolchain files over adding an option inside the > CMakeLists.txt files. On some systems you probably also want to change > the search path for libraries in particular (often /usr/lib32 instead of > /usr/lib), so that the find_package() commands and similar does not find > the incompatible 64 bit libraries. > > In our system we both have an option to "force 32 bit" (which basically > just adds -m32 to compile flags), and I have a toolchain file (which > corresponds to my stackoverflow answer). I find the toolchain file to be > more accurate/flexible to get correct setup. > > In addition to the three lines you might also want to set paths (I do > not need that on my system for my projects), something along the lines of: > > set(CMAKE_FIND_ROOT_PATH /usr/lib32) > set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) > set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) > set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) > > Cheers, > Yngve > -- > > 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