Question

我正在努力为BeagleBoard开发。因此我安装了CodeSourcery Sourcery_G ++ _ Lite工具链。

我想使用opencv库。所以我将源代码下载到我的Ubuntu devolepment系统，用gcc编译为共享库并安装了库。当我为x86-Architecture构建helloworld应用程序时，一切都很好。

现在，我想用ARM架构的其他工具链编译相同的应用程序。

我在编译/链接时收到这些警告/错误：

john@ubuntu:~/Downloads/BeagleTest$ arm-none-linux-gnueabi-g++ -c ImageProcessing.cpp -o ImageProcessing.o -I/usr/local/include
cc1plus: warning: include location "/usr/local/include" is unsafe for cross-compilation

john@ubuntu:~/Downloads/BeagleTest$ arm-none-linux-gnueabi-g++ -c Main.cpp -o Main.o -I/usr/local/include
cc1plus: warning: include location "/usr/local/include" is unsafe for cross-compilation

john@ubuntu:~/Downloads/BeagleTest$ arm-none-linux-gnueabi-g++ -oApplication -L/usr/local/lib Main.o ImageProcessing.o -lopencv_core
/usr/local/CodeSourcery/Sourcery_G++_Lite/bin/../lib/gcc/arm-none-linux-gnueabi/4.2.1/../../../../arm-none-linux-gnueabi/bin/ld: warning: library search path "/usr/local/lib" is unsafe for cross-compilation
/usr/local/CodeSourcery/Sourcery_G++_Lite/bin/../lib/gcc/arm-none-linux-gnueabi/4.2.1/../../../../arm-none-linux-gnueabi/bin/ld: skipping incompatible /usr/local/lib/libopencv_core.so when searching for -lopencv_core
/usr/local/CodeSourcery/Sourcery_G++_Lite/bin/../lib/gcc/arm-none-linux-gnueabi/4.2.1/../../../../arm-none-linux-gnueabi/bin/ld: cannot find -lopencv_core
collect2: ld returned 1 exit status

显然，即时通讯使用相同的include-directories和库-pit，比如im用于x86-Architecture。这不起作用。但我该怎么办？我是否必须交叉编译opencv-library？

Answer 1

库必须交叉编译，您必须确保在链接时找到正确的库。如果这不应该自动运行，您可能需要查看gcc的--sysroot命令行开关。

Answer 2

是。库是特定于架构的。

linux交叉编译和动态库/链接

2 个答案: