# # CMake Toolchain file for crosscompiling on ARM. # # This can be used when running cmake in the following way: # cd build/ # cmake .. -DCMAKE_TOOLCHAIN_FILE=../cross-arm-linux-gnueabihf.cmake # set(CROSS_PATH /opt/gcc-linaro-arm-linux-gnueabihf-4.7-2013.02-01-20130221_linux) # Target operating system name. set(CMAKE_SYSTEM_NAME Linux) # Name of C compiler. set(CMAKE_C_COMPILER "${CROSS_PATH}/bin/arm-linux-gnueabihf-gcc") set(CMAKE_CXX_COMPILER "${CROSS_PATH}/bin/arm-linux-gnueabihf-g++") # # Different build system distros set release optimization level to different # things according to their local policy, eg, Fedora is -O2 and Ubuntu is -O3 # here. Actually the build system's local policy is completely unrelated to # our desire for cross-build release optimization policy for code built to run # on a completely different target than the build system itself. # # Since this goes last on the compiler commandline we have to override it to a # sane value for cross-build here. Notice some gcc versions enable broken # optimizations with -O3. # if (CMAKE_BUILD_TYPE MATCHES RELEASE OR CMAKE_BUILD_TYPE MATCHES Release OR CMAKE_BUILD_TYPE MATCHES release) set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2") set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2") endif() # Where to look for the target environment. (More paths can be added here) set(CMAKE_FIND_ROOT_PATH "${CROSS_PATH}") # Adjust the default behavior of the FIND_XXX() commands: # search programs in the host environment only. set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) # Search headers and libraries in the target environment only. set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)