1# 2# CMake Toolchain file for crosscompiling on 64bit 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-w64.cmake -DLWS_WITH_SSL=0 7# 8 9set(CROSS_PATH /opt/mingw64) 10 11# Target operating system name. 12set(CMAKE_SYSTEM_NAME Windows) 13 14# Name of C compiler. 15set(CMAKE_C_COMPILER "${CROSS_PATH}/bin/x86_64-w64-mingw32-gcc") 16set(CMAKE_CXX_COMPILER "${CROSS_PATH}/bin/x86_64-w64-mingw32-g++") 17set(CMAKE_RC_COMPILER "${CROSS_PATH}/bin/x86_64-w64-mingw32-windres") 18set(CMAKE_C_FLAGS "-Wno-error") 19 20# 21# Different build system distros set release optimization level to different 22# things according to their local policy, eg, Fedora is -O2 and Ubuntu is -O3 23# here. Actually the build system's local policy is completely unrelated to 24# our desire for cross-build release optimization policy for code built to run 25# on a completely different target than the build system itself. 26# 27# Since this goes last on the compiler commandline we have to override it to a 28# sane value for cross-build here. Notice some gcc versions enable broken 29# optimizations with -O3. 30# 31if (CMAKE_BUILD_TYPE MATCHES RELEASE OR CMAKE_BUILD_TYPE MATCHES Release OR CMAKE_BUILD_TYPE MATCHES release) 32 set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2") 33 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2") 34endif() 35 36# Where to look for the target environment. (More paths can be added here) 37set(CMAKE_FIND_ROOT_PATH "${CROSS_PATH}") 38 39# Adjust the default behavior of the FIND_XXX() commands: 40# search programs in the host environment only. 41set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) 42 43# Search headers and libraries in the target environment only. 44set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) 45set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) 46