我正在尝试使用适用于ARM处理器的交叉编译器在Fedora 21上安装OpenCV。
但是，当我尝试使用Cmake 3.03进行配置时，它给出了错误：
*The CXX compiler identification is unknown
The C compiler identification is unknown
Check for working CXX compiler: /opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++
Check for working CXX compiler: /opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++ -- broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCXXCompiler.cmake:54 (message):
The C++ compiler "/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++" is
not able to compile a simple test program.
It fails with the following output:
Change Dir: /opt/opencv/relarm/CMakeFiles/CMakeTmp
Run Build Command:"/usr/bin/gmake" "cmTryCompileExec1616328985/fast"
/usr/bin/gmake -f CMakeFiles/cmTryCompileExec1616328985.dir/build.make
CMakeFiles/cmTryCompileExec1616328985.dir/build
gmake[1]: Entering directory '/opt/opencv/relarm/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report
/opt/opencv/relarm/CMakeFiles/CMakeTmp/CMakeFiles 1
Building CXX object
CMakeFiles/cmTryCompileExec1616328985.dir/testCXXCompiler.cxx.o
/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++ -o
CMakeFiles/cmTryCompileExec1616328985.dir/testCXXCompiler.cxx.o -c
/opt/opencv/relarm/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
/opt/FriendlyARM/toolschain/4.5.1/lib/gcc/arm-none-linux-gnueabi/4.5.1/../../../../arm-none-linux-gnueabi/bin/as:
error while loading shared libraries: libz.so.1: cannot open shared object
file: No such file or directory
CMakeFiles/cmTryCompileExec1616328985.dir/build.make:57: recipe for target
'CMakeFiles/cmTryCompileExec1616328985.dir/testCXXCompiler.cxx.o' failed
gmake[1]: Leaving directory '/opt/opencv/relarm/CMakeFiles/CMakeTmp'
gmake[1]: ***
[CMakeFiles/cmTryCompileExec1616328985.dir/testCXXCompiler.cxx.o] Error 1
Makefile:118: recipe for target 'cmTryCompileExec1616328985/fast' failed
gmake: *** [cmTryCompileExec1616328985/fast] Error 2
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:63 (project)
Configuring incomplete, errors occurred!
See also "/opt/opencv/relarm/CMakeFiles/CMakeOutput.log".
See also "/opt/opencv/relarm/CMakeFiles/CMakeError.log".*
我尝试将Path添加到我的bash_profile中，使其看起来像这样：
# .bash_profile
# Get the aliases and functions if [ -f ~/.bashrc ]; then
. ~/.bashrc fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin export PATH=$PATH:/usr/local/bin:/usr/local/sbin:/opt/FriendlyARM/toolschain/4.5.1/bin/arm-linux-g++:/usr/bin/gmake:/usr/share/bin:/usr/share/sbin
我已经搜寻了几个小时，但找不到任何有用的步骤。任何帮助，将不胜感激。提前致谢。
从输出看来，cmake能够找到您的交叉编译器，但是如输出所示，它无法编译简单的程序。我将从在C ++中创建Hello World并尝试使用交叉编译器进行编译开始。如果那不起作用，那是您的第一个问题。如果它确实起作用，那么我猜想它与某些环境变量有关。您可以尝试cmake在尝试编译简单的C ++程序并与您的shell环境变量进行比较之前先打印环境变量，对不起，我没有其他帮助。
更新：
因此，我下载了FriendlyArm，它提供的二进制文件是32位ELF，因此您将需要32位版本的libz。Ayum install zlib.i686应该可以解决您的问题。FriendlyArm工具链对我有用，并且我已经安装了zlib.i686。如果您遇到有关丢失共享对象的任何其他错误，请确保已安装32位版本。
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我来说两句