Create aarch64-toolchain.cmake

aarch64-toolchain.cmake

@@ -0,0 +1,42 @@
+# adapted from: https://vulkan.lunarg.com/issue/view/66adac57aa8cf92bbcfd1eb1
+
+# Define our host system
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR aarch64)
+set(CMAKE_CROSSCOMPILING 1)
+set(CMAKE_SYSTEM_VERSION 1)
+
+set(CROSS_PREFIX "aarch64-linux-gnu")
+set(CURRENT_COMPILER_VERSION "-12")
+
+# Define the cross compiler locations
+if(NOT TOOLCHAIN_ROOT_DIR) # If the toolchain directory is not passed via command line
+    set(TOOLCHAIN_ROOT_DIR /usr/${CROSS_PREFIX})
+endif()
+
+# Check if the cross compiler is installed
+if(NOT EXISTS "${TOOLCHAIN_ROOT_DIR}")
+    message(FATAL_ERROR "\
+ ARM toolchain is not installed.\n\
+ On debian based systems it can be installed by the commands\n\
+     sudo apt-get install g{cc,++}-aarch64-linux-gnu\n\
+ Or you can specify its location by specifying it via -DTOOLCHAIN_ROOT_DIR=")
+endif()
+
+include_directories(include ${TOOLCHAIN_ROOT_DIR}/local/include)
+
+# Define our compilers
+set(CMAKE_C_COMPILER ${CROSS_PREFIX}-gcc${CURRENT_COMPILER_VERSION})
+set(CMAKE_CXX_COMPILER ${CROSS_PREFIX}-g++${CURRENT_COMPILER_VERSION})
+
+# Define the sysroot
+set(CMAKE_FIND_ROOT_PATH ${TOOLCHAIN_ROOT_DIR})
+message(STATUS "Searching for ARM toolchain in: ${CMAKE_FIND_ROOT_PATH}")
+
+# Use our definitions for compiler tools
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+# Search for libraries and headers in the target directories only
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+
+set(ASM aarch64-linux-gnu-as)