# Copyright 2023 The Khronos Group Inc.
# SPDX-License-Identifier: Apache-2.0

# CMake Toolchain file for cross-compiling to aarch64 (arm64) on
# a non-arm64 device running Linux (Ubuntu).
#
# This following packages must be installed for compiling to ARM64:
#   sudo apt-get -qq install gcc-aarch64-linux-gnu g++-aarch64-linux-gnu binutils-aarch64-linux-gnu

######################################################################
# Nota Bene
#
# Untested. Was under development when Travis-CI made arm64 Ubuntu
# runners available rendering it unneeded. Kept here to preserve the
# learning and in case it becomes useful.
######################################################################

# Target operating system name.
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

# Name of C compiler.
set(CMAKE_C_COMPILER "/usr/bin/aarch64-linux-gnu-gcc")
set(CMAKE_CXX_COMPILER "/usr/bin/aarch64-linux-gnu-g++")

# Where to look for the target environment. (More paths can be added here)
set(CMAKE_FIND_ROOT_PATH /usr/aarch64-linux-gnu)
#set(CMAKE_SYSROOT /usr/aarch64-linux-gnu)

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

# Search headers and libraries in the target environment only.
#set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
#set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
#set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

set(CPACK_DEBIAN_PACKAGE_ARCHITECTURE arm64)