MinGW win toolchain example

Toolchain-mingw32.cmake

# the name of the target operating system
SET(CMAKE_SYSTEM_NAME Windows)

SET(MINGW_BASE C:/msys64/mingw64)

SET(MINGW_AR ${MINGW_BASE}/bin/ar.exe)

# which compilers to use for C and C++
SET(CMAKE_MAKE_PROGRAM ${MINGW_BASE}/bin/mingw32-make.exe)
SET(CMAKE_C_COMPILER ${MINGW_BASE}/bin/gcc.exe)
SET(CMAKE_CXX_COMPILER ${MINGW_BASE}/bin/g++.exe)

# here is the target environment located
SET(CMAKE_FIND_ROOT_PATH ${MINGW_BASE}/ )
# adjust the default behaviour of the FIND_XXX() commands:
# search headers and libraries in the target environment, search
# programs in the host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)