How to link to <math.h> library using CMake?

问题

I included <math.h> library in my source code. But I get compilation errors.

Error: 
**undefined reference to 'sqrt'
**undefined reference to 'atan'

How can I link to <math.h> in CMakeLists.txt?

回答1:

I found answer. Cmakelists.txt file is like it:

cmake_minimum_required(VERSION 3.6)
project(project_name)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 ")

set(SOURCE_FILES main.c)

add_executable(project_name ${SOURCE_FILES})

And you must add this command, for < math.h > or any standard library is similar.

target_link_libraries(project_name m)

That's all.

来源：https://stackoverflow.com/questions/40196373/how-to-link-to-math-h-library-using-cmake