# Simple toolchain file for compiling under linux
# Usage: cmake .. -DCMAKE_TOOLCHAIN_FILE=linux-arm64.cmake

# specify the target system properties
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

# specify shared library suffix
set(OUT_FILE_SUFFIX "arm64")

if (${CMAKE_HOST_SYSTEM_PROCESSOR} STREQUAL "aarch64")
    # specify native compiler
    set(CMAKE_C_COMPILER gcc)
    set(CMAKE_CXX_COMPILER g++)
else()
    # specify cross compiler
    set(CMAKE_C_COMPILER aarch64-linux-gnu-gcc)
    set(CMAKE_CXX_COMPILER aarch64-linux-gnu-g++)
endif()

# specify the compiler flags
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -static-libgcc -static-libstdc++")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -static-libgcc -static-libstdc++")

# specify the paths for find_(name), functions (target environment). 
set(CMAKE_FIND_ROOT_PATH /usr/lib)

# search only for programs in the build host directories (find_program)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

# use only CMAKE_FIND_ROOT_PATH for searching (find_library)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)

# use only CMAKE_FIND_ROOT_PATH for searching (find_file, find_path)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

# use only CMAKE_FIND_ROOT_PATH for searching (find_package)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)