Cross Compile AARCH64

neumpau

Hello!

I attempted to cross-compile DepthAI-Core using x86_64-linux-gnu-gcc-8 for aarch64, but it was unsuccessful.

Is there a known solution to this issue, or perhaps a precompiled version available for aarch64?

Best regards,

Paul

jakaskerl

Hi neumpau
Why was it unsuccessful?

Thanks,
Jaka

neumpau

(Sorry I failed to post the screenshot)

The issue is related to the hunter packages:
(

jakaskerl

neumpau
Sorry the image doesn't open.

neumpau

Okay, here are the errors that occur when I attempt to run CMake:

ccs@ccs-VirtualBox:~/depthai-core/build$ cmake ..
-- Using existing generated toolchain
-- Using toolchain file: /home/ccs/depthai-core/build/generated/toolchain.cmake
-- [hunter] Calculating Toolchain-SHA1
CMake Error at /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_calculate_toolchain_sha1.cmake:52 (configure_file):
  Operation not permitted
Call Stack (most recent call first):
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_apply_gate_settings.cmake:138 (hunter_calculate_toolchain_sha1)
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_finalize.cmake:73 (hunter_apply_gate_settings)
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_add_package.cmake:23 (hunter_finalize)
  cmake/depthaiDependencies.cmake:12 (hunter_add_package)
  CMakeLists.txt:173 (include)



[hunter ** INTERNAL **] Unexpected empty string
[hunter ** INTERNAL **] [Directory:/home/ccs/depthai-core/cmake]

------------------------------ ERROR -----------------------------
    https://hunter.readthedocs.io/en/latest/reference/errors/error.internal.html
------------------------------------------------------------------

CMake Error at /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_error_page.cmake:12 (message):
Call Stack (most recent call first):
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_internal_error.cmake:13 (hunter_error_page)
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_assert_not_empty_string.cmake:9 (hunter_internal_error)
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_make_directory.cmake:12 (hunter_assert_not_empty_string)
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_apply_gate_settings.cmake:142 (hunter_make_directory)
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_finalize.cmake:73 (hunter_apply_gate_settings)
  /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_add_package.cmake:23 (hunter_finalize)
  cmake/depthaiDependencies.cmake:12 (hunter_add_package)
  CMakeLists.txt:173 (include)

jakaskerl

Hi @neumpau

CMake Error at /home/ccs/.hunter/_Base/Download/Hunter/0.23.322/cb0ea1f/Unpacked/cmake/modules/hunter_calculate_toolchain_sha1.cmake:52 (configure_file):
  Operation not permitted

is likely the root cause. Can't say for sure what causes it; Depthai should be cross-compileable. I suggest pasting the logs to https://chatgpt.com/ until it is resolved.

Thanks,
Jaka

MatevzMorato

Perhaps the user doesn't have write permissions to the /home/css/.hunter/ folder?

You can try changing hunter root with -DHUNTER_ROOT=build/.hunter