OpenCV交叉编译路径

Question

我已经测试了Myzhars教程中的一个程序，用于jetsonNano + FLIR热像仪(https://github.com/Myzhar/Lepton3_Jetson)，我可以在目标平台(jetson nano)上成功地运行cmake和make，但是我希望能够从我的x86_64 linux PC进行交叉编译。

我已经(开始)通过` `sudo sshfs -o follow_symlinks jetson@nano:/ /mnt/sysroot挂载了Jetson到/mnt/sysroot，正如我所期望的那样，我认为从现在开始设置交叉编译将会很容易。我已经修改了我的cmakelist.txt，现在它看起来像这样：

cmake_minimum_required (VERSION 3.14)

project (lepton3_jetson)

set(CMAKE_CONFIGURATION_TYPES "Debug;Release" CACHE STRING "" FORCE)
set(CMAKE_DEBUG_POSTFIX "_d")

#########################################################
# FLAGS
set (CMAKE_CXX_STANDARD 17)
#########################################################


#crossCompile
set(sysroot /mnt/sysroot)

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

set (CMAKE_SYSROOT, ${sysroot})
SET(CMAKE_FIND_ROOT_PATH ${sysroot})

set(tools /opt/linaro/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu)
set(CMAKE_C_COMPILER ${tools}/bin/aarch64-linux-gnu-gcc)
set(CMAKE_CXX_COMPILER ${tools}/bin/aarch64-linux-gnu-g++)
set(CROSSBIN ${tools})

# search for programs in the build host directories
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# for libraries and headers in the target directories
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(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --sysroot=${sysroot}" CACHE INTERNAL "" FORCE)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --sysroot=${sysroot}" CACHE INTERNAL "" FORCE)
set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} --sysroot=${sysroot}" CACHE INTERNAL "" FORCE)
set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} --sysroot=${sysroot}" CACHE INTERNAL "" FORCE)


#crossCompile end

# Letpon3 Library source code
add_subdirectory (grabber_lib)

# OpenCV demo
add_subdirectory (opencv_demo)

# Check Fever App
add_subdirectory (check_fever_app)

# Qt ZED app
find_package(Qt5 COMPONENTS Widgets)
find_package(ZED 3)

if(Qt5_FOUND AND ZED_FOUND)
   add_subdirectory(qt_check_fever)
endif()

然而，我似乎不能让它以我想要的方式运行。目前，在这个版本的cmake中，我遇到了错误

CMake Error at /usr/local/share/cmake-3.18/Modules/FindPackageHandleStandardArgs.cmake:165 (message):
  Could NOT find BLAS (missing: BLAS_LIBRARIES)
Call Stack (most recent call first):
  /usr/local/share/cmake-3.18/Modules/FindPackageHandleStandardArgs.cmake:458 (_FPHSA_FAILURE_MESSAGE)
  /usr/local/share/cmake-3.18/Modules/FindBLAS.cmake:947 (find_package_handle_standard_args)
  /mnt/sysroot/usr/local/zed/zed-config.cmake:36 (find_package)
  CMakeLists.txt:53 (find_package)


CMake Warning at CMakeLists.txt:53 (find_package):
  Found package configuration file:

    /mnt/sysroot/usr/local/zed/zed-config.cmake

  but it set ZED_FOUND to FALSE so package "ZED" is considered to be NOT
  FOUND.


-- Configuring incomplete, errors occurred!
`

它尝试查找主机上的库而不是目标上的库，我的理解是否正确？

为什么？

Answer 1

对于任何有类似问题的人:我从来没有得到完全有效的解决方案。然而，我设法创建了cmakefile，它至少允许我在主机上使用IDE解析项目，然后在目标计算机上编译它。