cmake build errors

[billamiable]

Hi I tried to use cmake to build (mkdir build && cd build && cmake ..), it worked well. But errors happened in make. Anyone encountered same problem?

[100%] Linking CXX executable CPM
/usr/bin/ld: cannot find -lopencv_core310.lib
/usr/bin/ld: cannot find -lopencv_highgui310.lib
/usr/bin/ld: cannot find -lopencv_imgcodecs310.lib
/usr/bin/ld: cannot find -lopencv_imgproc310.lib
collect2: error: ld returned 1 exit status
CMakeFiles/CPM.dir/build.make:120: recipe for target 'CPM' failed
make[2]: *** [CPM] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/CPM.dir/all' failed
make[1]: *** [CMakeFiles/CPM.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

Please offer some help~ Thx~

[csukuangfj]

@billamiable
You need to install OpenCV first.
If your OpenCV is installed inside the directory "C:/OpenCV", then the original CMakeLists.txt
works fine. Otherwise you need to change the following content in the CMakeLists.txt

INCLUDE_DIRECTORIES(
./include
C:/OpenCV/include
C:/OpenCV/include/opencv
C:/OpenCV/include/opencv2
)

LINK_DIRECTORIES(
C:/OpenCV/lib/x86/Debug
C:/OpenCV/lib/x86/Release
)

Change C:/OpenCV to your OpenCV installation directory.

The first one specifies the OpenCV headers and the second one is the OpenCV libraries.

If you are using Linux, then please replace the whole content of
the CMakeLists.txt with the following code (I assume that you have installed OpenCV corrrectly)

cmake_minimum_required(VERSION 2.6)
set(PROJ_NAME CPM)
project (${PROJ_NAME})

find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})

add_definitions(-DWITH_SSE)

include_directories(./include)

add_executable(${PROJ_NAME} main.cpp CPM.cpp)
target_link_libraries(${PROJ_NAME} ${OpenCV_LIBS})

[billamiable]

@csukuangfj
Thanks for your reply !!!
The original CMakeLists.txt is for Windows, I am using linux and your approach works fine !!!
Many thanks!

[csukuangfj]

This issue can be closed now.

[YinlinHu]

Thanks @csukuangfj