Toolchain-aarch64-linux-gnu.cmake

# Windows (mingw-w64-i686) hosted cross toolchains
# AArch64 GNU/Linux target (aarch64-none-linux-gnu)

# 1.  Download the ARM GNU Toolchain for Windows host from
#    https://developer.arm.com/downloads/-/arm-gnu-toolchain-downloads 
#    Extract the downloaded archive to a convenient location, such as C:\bin.
# 2. [optional] You might need to modify the toolchain variable based on 
#    your extraction location and toolchain version.
# 3. Install MSYS2 (https://www.msys2.org/) if you don't have it already.
#    It provides a Unix-like environment for Windows, including package management tools.
#    Once installed, launch the MSYS2 UCRT64 terminal.
# 4. Install CMake and Ninja using the package manager within the MSYS2 terminal:
#    $ pacman -S mingw-w64-ucrt-x86_64-cmake mingw-w64-ucrt-x86_64-ninja
# 5. Configure your CMake source:
#    Replace <path/to/toolchain.cmake> with the actual path to the file
#    within your extracted toolchain directory.
#    $ cmake -DCMAKE_TOOLCHAIN_FILE=</path/to/toolchain.cmake> . -G Ninja

set(toolchain   C:/bin/arm-gnu-toolchain-13.2.Rel1-mingw-w64-i686-aarch64-none-linux-gnu)

# the name of the target operating system
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

# which compilers to use for C and C++
set(CMAKE_C_COMPILER   ${toolchain}/bin/aarch64-none-linux-gnu-gcc.exe)
set(CMAKE_CXX_COMPILER ${toolchain}/bin/aarch64-none-linux-gnu-g++.exe)

# where is the target environment located
set(CMAKE_FIND_ROOT_PATH  ${toolchain})

# adjust the default behavior of the FIND_XXX() commands:
# search programs in the host environment
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

# search headers and libraries in the target environment
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)


# Toolchain file document:
# https://cmake.org/cmake/help/book/mastering-cmake/chapter/Cross%20Compiling%20With%20CMake.html#toolchain-files
# https://cmake.org/cmake/help/latest/manual/cmake-toolchains.7.html#cross-compiling