我有一个C ++大型程序，可以为Jetson TX2交叉编译 该程序的结构如下：
root
| - module1
| | - CMakeLists.txt
| - module2
| | - CMakeLists.txt
| - CMakeLists.txt
| - toolchain.cmake
每个模块子文件夹都创建一个共享库，供我的主要目标链接。
Jetson的工具链是
SET(CMAKE_SYSTEM_NAME Linux)
SET(CMAKE_SYSTEM_VERSION 1)
SET(CROSS_COMPILE "jetson")
SET(CMAKE_C_COMPILER aarch64-linux-gnu-gcc-5)
SET(CMAKE_CXX_COMPILER aarch64-linux-gnu-gcc-5)
SET(CMAKE_SYSROOT /usr/local/sysroot_jetson)
set(ENV{PKG_CONFIG_DIR} "")
set(ENV{PKG_CONFIG_LIBDIR} "${CMAKE_SYSROOT}/usr/lib/pkgconfig:${CMAKE_SYSROOT}/usr/share/pkgconfig:${CMAKE_SYSROOT}/usr/local/lib/pkgconfig:${CMAKE_SYSROOT}/usr/lib/aarch64-linux-gnu/pkgconfig")
set(ENV{PKG_CONFIG_SYSROOT_DIR} ${CMAKE_SYSROOT})
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
到目前为止，我还没有任何问题，直到现在我需要包括一个具有tensorflow依赖关系的新模块。
我已经在/ usr / local / lib中安装了tensorflow_cc库。 该TF库是在GPU支持下进行编译的，因此可以链接Jetson上安装的cuda-9.0的许多功能。
模块的CMakeLists.txt只需链接到tensorflow，如下所示。
当然，这是简化的。
target_link_libraries(${LIB_NAME} -ltensorflow_cc)
只要我不交叉编译就可以了。
直接在jetson或我的主机上编译可以正常工作。
但是添加工具链无济于事。
编译时，tensorflow模块的共享库实际上可以很好地编译，但是链接最终目标只是输出以下内容
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libcublas.so.9.0, needed by /usr/local/sysroot_jetson/usr/local/lib/libtensorflow_cc.so, not found (try using -rpath or -rpath-link)
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libcusolver.so.9.0, needed by /usr/local/sysroot_jetson/usr/local/lib/libtensorflow_cc.so, not found (try using -rpath or -rpath-link)
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libcudart.so.9.0, needed by /usr/local/sysroot_jetson/usr/local/lib/libtensorflow_cc.so, not found (try using -rpath or -rpath-link)
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libcuda.so.1, needed by /usr/local/sysroot_jetson/usr/local/lib//libtensorflow_framework.so, not found (try using -rpath or -rpath-link)
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libcufft.so.9.0, needed by /usr/local/sysroot_jetson/usr/local/lib//libtensorflow_framework.so, not found (try using -rpath or -rpath-link)
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libcurand.so.9.0, needed by /usr/local/sysroot_jetson/usr/local/lib//libtensorflow_framework.so, not found (try using -rpath or -rpath-link)
/usr/local/sysroot_jetson/usr/local/lib//libtensorflow_framework.so: undefined reference to `cublasDrotm_v2@libcublas.so.9.0'
/usr/local/sysroot_jetson/usr/local/lib/libtensorflow_cc.so: undefined reference to `cusolverDnZgeqrf@libcusolver.so.9.0'
/usr/local/sysroot_jetson/usr/local/lib//libtensorflow_framework.so: undefined reference to `cuEventElapsedTime'
......
所有必需的文件都可以在sysroot中的/ usr / local / sysroot_jetson / usr / local / cuda / lib64中找到
我的理解是/etc/ld.so.conf.d中设置的所有ld额外路径都不会使用或读取。
我应该能够指示cmake查找那些额外的搜索路径，但我尝试了所有可以阅读的内容，而没有进行任何更改。
pkg-config具有所有cuda库的文件，因此我可以
pkg_check_modules(cudaall REQUIRED cuda-9.0 cublas-9.0 cusolver-9.0 cudart-9.0 cufft-9.0 curand-9.0)
它找到了他们，但是失败了
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: cannot find -lcublas
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: cannot find -lcusolver
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: cannot find -lcudart
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: cannot find -lcufft
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: cannot find -lcurand
添加-L $ {CMAKE_SYSROOT} /usr/local/cuda-9.0/lib64（我不应该这样做）只是导致找不到其他nvidia库。
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libnvrm_gpu.so, needed by /usr/local/sysroot_jetson/usr/lib/aarch64-linux-gnu/libcuda.so, not found (try using -rpath or -rpath-link)
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libnvrm.so, needed by /usr/local/sysroot_jetson/usr/lib/aarch64-linux-gnu/libcuda.so, not found (try using -rpath or -rpath-link)
/usr/lib/gcc-cross/aarch64-linux-gnu/5/../../../../aarch64-linux-gnu/bin/ld: warning: libnvidia-fatbinaryloader.so.28.2.1, needed by /usr/local/sysroot_jetson/usr/lib/aarch64-linux-gnu/libcuda.so, not found (try using -rpath or -rpath-link)
我真正不明白的是，为什么要关心tensorflow_cc.so链接的哪些库？
那不是运行时问题吗？
我不能只在编译时关心tensorflow_cc.so的依赖项吗？
这一切都让我感到困惑。
任何见识都会得到深深的赞赏。