1# 2# CMake Toolchain file for crosscompiling on 32bit Windows platforms. 3# 4# This can be used when running cmake in the following way: 5# cd build/ 6# cmake .. -DCMAKE_TOOLCHAIN_FILE=../contrib/cross-w32.cmake -DLWS_WITH_SSL=0 7# 8 9# the outermost path to your cross toolchain 10#set(CROSS_PATH /opt/mingw32) 11set(CROSS_PATH /usr) 12# your cross root 13set(CROSS_ROOT ${CROSS_PATH}/i686-w64-mingw32/sys-root/) 14 15# Target operating system name. 16set(CMAKE_SYSTEM_NAME Windows) 17 18# Name of C compiler. 19set(CMAKE_C_COMPILER "${CROSS_PATH}/bin/i686-w64-mingw32-gcc") 20set(CMAKE_CXX_COMPILER "${CROSS_PATH}/bin/i686-w64-mingw32-g++") 21set(CMAKE_RC_COMPILER "${CROSS_PATH}/bin/i686-w64-mingw32-windres") 22 23# 24# Different build system distros set release optimization level to different 25# things according to their local policy, eg, Fedora is -O2 and Ubuntu is -O3 26# here. Actually the build system's local policy is completely unrelated to 27# our desire for cross-build release optimization policy for code built to run 28# on a completely different target than the build system itself. 29# 30# Since this goes last on the compiler commandline we have to override it to a 31# sane value for cross-build here. Notice some gcc versions enable broken 32# optimizations with -O3. 33# 34if (CMAKE_BUILD_TYPE MATCHES RELEASE OR CMAKE_BUILD_TYPE MATCHES Release OR CMAKE_BUILD_TYPE MATCHES release) 35 set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2") 36 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2") 37endif() 38 39# Where to look for the target environment. (More paths can be added here) 40set(CMAKE_FIND_ROOT_PATH "${CROSS_ROOT}/mingw") 41set(CMAKE_SYSROOT ${CROSS_ROOT}) 42 43# Adjust the default behavior of the FIND_XXX() commands: 44# search programs in the host environment only. 45set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) 46 47# Search headers and libraries in the target environment only. 48set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) 49set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) 50