yolox_example 在 aarch64 linux 下编译失败

[xTayEx]

build target 为 aarch64 的 linux ，按照 https://github.com/MegEngine/MegCC/blob/main/yolox_example/README.md 中的说明操作，当执行 python ../runtime/scripts/runtime_build.py --cross_build --kernel_dir ./kernel_yolox_s_arm/ --remove_old_build --cross_build_target_os LINUX --cross_build_target_arch aarch64 时，会出现如下错误：

/home/xxxx/Downloads/megcc_release/release_megcc/runtime/../immigration/include/marm_neon.h:241:62: error: pragma or attribute ‘target("dotprod")’ is not valid
  241 |                                                              int8x16_t b) {
      |                                                              ^~~~~~~~~

编译工具链为gcc-aarch64-linux-gnu MegCC版本为v0.1.2

[chenqy4933]

看起来好像是 neon 的头文件不对，这个数据类型没有找到，你直接到模型编译完成之后的 runtime 下面去执行 cmake ，看看是不是cmake 就报错了。

[xTayEx]

在 runtime 下执行 cmake 没有问题，结果如下

-- build MegCC runtime with kernel dir /home/xxxxx/Downloads/megcc_release/release_megcc/yolox_example/kernel_yolox_s_arm
-- TinyNN BUILD INFO:
--  System:                                 Linux
--  Processor:                              x86_64
--  Enable shared libarys:                  OFF
--  Enable asan check:                      OFF
--  Enabel achieve all staitc:              OFF
--  Enabel alloc tensor dynamic:            OFF
--  Enabel dump tensor to dir:              OFF
--  Build with register callback:           OFF
--  Build with Not standard os:             OFF
--  Build kernel dir:                       /home/xxxxx/Downloads/megcc_release/release_megcc/yolox_example/kernel_yolox_s_arm
-- Gen flatcc header.
-- Get immigration kernel.
CMake Warning at CMakeLists.txt:165 (message):
  build static tinynn, if you want strip and mangle sym, please run python3
  runtime/scripts/strip_and_mangling_static_tinynn.py manually

-- Configuring done
-- Generating done
-- Build files have been written to: /home/xxxxxxx/Downloads/megcc_release/release_megcc/yolox_example/kernel_yolox_s_arm/runtime

[Li-Ming-xin]

在 runtime 下执行 cmake 没有问题，结果如下

-- build MegCC runtime with kernel dir /home/xxxxx/Downloads/megcc_release/release_megcc/yolox_example/kernel_yolox_s_arm
-- TinyNN BUILD INFO:
--    System:                                 Linux
--    Processor:                              x86_64
--    Enable shared libarys:                  OFF
--    Enable asan check:                      OFF
--    Enabel achieve all staitc:              OFF
--    Enabel alloc tensor dynamic:            OFF
--    Enabel dump tensor to dir:              OFF
--    Build with register callback:           OFF
--    Build with Not standard os:             OFF
--    Build kernel dir:                       /home/xxxxx/Downloads/megcc_release/release_megcc/yolox_example/kernel_yolox_s_arm
-- Gen flatcc header.
-- Get immigration kernel.
CMake Warning at CMakeLists.txt:165 (message):
  build static tinynn, if you want strip and mangle sym, please run python3
  runtime/scripts/strip_and_mangling_static_tinynn.py manually

-- Configuring done
-- Generating done
-- Build files have been written to: /home/xxxxxxx/Downloads/megcc_release/release_megcc/yolox_example/kernel_yolox_s_arm/runtime

看起来你执行的时候，没有指定Arch和OS，指定一下试试呢？或者直接看python ../runtime/scripts/runtime_build.py --cross_build --kernel_dir ./kernel_yolox_s_arm/ --remove_old_build --cross_build_target_os LINUX --cross_build_target_arch aarch64的输出，找到cmake的输出部分。 @xTayEx