# # CMake Toolchain file for crosscompiling on 32bit Windows platforms. # # This can be used when running cmake in the following way: # cd build/ # cmake .. -DCMAKE_TOOLCHAIN_FILE=../contrib/cross-w32.cmake -DLWS_WITH_SSL=0 # # the outermost path to your cross toolchain #set(CROSS_PATH /opt/mingw32) set(CROSS_PATH /usr) # your cross root set(CROSS_ROOT ${CROSS_PATH}/i686-w64-mingw32/sys-root/) # Target operating system name. set(CMAKE_SYSTEM_NAME Windows) # Name of C compiler. set(CMAKE_C_COMPILER "${CROSS_PATH}/bin/i686-w64-mingw32-gcc") set(CMAKE_CXX_COMPILER "${CROSS_PATH}/bin/i686-w64-mingw32-g++") set(CMAKE_RC_COMPILER "${CROSS_PATH}/bin/i686-w64-mingw32-windres") # # 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_ROOT}/mingw") set(CMAKE_SYSROOT ${CROSS_ROOT}) # 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)