when ./build_ros.sh

[dbdxnuliba]

make[2]: *** 没有规则可制作目标“../../../../lib/libopencv_core3.so”，由“../Mono” 需求。 停止。
CMakeFiles/Makefile2:430: recipe for target 'CMakeFiles/Mono.dir/all' failed
make[1]: *** [CMakeFiles/Mono.dir/all] Error 2

[yinloonga]

First, you should check out your opencv_core3.so version, and then create a soft link to it. Finally, you can camke .. and make in build file again,