Trying out some stuff with the toolchain extra variables

Signed-off-by: Emerson Knapp <[email protected]>

ros_cross_compile/toolchains/aarch64-gnu.cmake

@@ -3,8 +3,6 @@ set(TRIPLE aarch64-linux-gnu)
 set(PY_VERSION 38)
 set(CMAKE_SYSTEM_PROCESSOR aarch64)
 
-
-
 # Generic
 function(require_env name)
 if("$ENV{${name}}" STREQUAL "")
@@ -18,6 +16,7 @@ require_env(ROS_DISTRO)
 
 set(CMAKE_SYSTEM_NAME Linux)
 SET(CMAKE_SYSTEM_VERSION 1)
+set(CMAKE_LIBRARY_ARCHITECTURE ${TRIPLE})
 
 set(CMAKE_C_COMPILER /usr/bin/${TRIPLE}-gcc)
 set(CMAKE_CXX_COMPILER /usr/bin/${TRIPLE}-g++)
@@ -31,6 +30,8 @@ set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
 set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
-
 set(PYTHON_SOABI cpython-${PY_VERSION}m-${TRIPLE})
 set(THREADS_PTHREAD_ARG "0" CACHE STRING "Result from TRY_RUN" FORCE)
+
+set(CMAKE_CROSSCOMPILING 1)
+set(CMAKE_CROSSCOMPILING_EMULATOR /usr/bin/qemu-aarch64-static)