when i run the example code in clion ,it shows undefined reference to `S2Testing::RandomPoint()' ; Ubuntu 18.04

[google]

when i run the example code in clion ,it shows undefined reference to `S2Testing::RandomPoint()' ; Ubuntu 18.04

[jmr]

link_libraries(libs2.so)

Try link_libraries(s2 s2testing).

The link_libraries documentation says target_link_libraries is preferred, so you might want to use that instead. target_link_libraries has to come after add_executable.

Also, call your target mytest or something. There's a CMake warning that a target namedtest may result in undefined behavior.

Also see the comment in CMakeLists.txt about how projects can use s2 with add_subdirectory.

[topgun009]

I am doing the above method.but i got a new error.
/usr/bin/ld: /usr/local/lib/libs2.so: undefined reference to symbol '_ZN6google14FlagRegistererC1IiEEPKcS3_S3_PT_S5_' //usr/lib/x86_64-linux-gnu/libgflags.so.2.2: error adding symbols: DSO missing from command line

[jmr]

You also need to link against gflags. I think using target_link_libraries instead of link_libraries takes care of this for you, but am not that sure.

[topgun009]

I have solved the problem perfectly according to your suggestion。Thank you very much!