Add c++ compiler flags using CMake

Question

I am quite new to the whole CMake logic and syntax. For the code I am working on, I need to use the cap_set_proc function to work with a process capabilities flags (man link). So I decided to start with a really stupid piece of code that you see here:

#include<iostream> #include<string> #include<sys/capability.h> using namespace std; int main(){ cap_t test = cap_get_proc(); string whatsTest(cap_to_text(test,nullptr)); cout<<whatsTest<<endl; return 0; }

(For the moment, I do not care if the code I wrote makes any sense...)
Now, if I simply use c++ (as shown below) everything compiles fine and the executable runs without any issue:

c++ test_main.cpp -o test_cap -lcap

The problem is that the project I am working one is pretty huge and relies on CMake pretty heavily. So I wanted to compile the same code but using CMake... How do I write a CMakeLists.txt file that allows me to obtain the same result as the compiler instruction shown in the previous lines?

mr NAE · Accepted Answer · 2020-05-05 16:29:16Z

Something like the following should be all you need:

cmake_minimum_required(VERSION 3.17) project(TestCapProject) # Add your executable target. add_executable(test_cap test_main.cpp) # Link the libcap library to your executable. target_link_libraries(test_cap PRIVATE cap)

If you're adding this to an existing CMake project, you may only need the last two or three lines, depending on your project hierarchy.

I suggest reading through the CMake guide to get your bearings on some basic CMake commands.

The documentation for the two primary commands you need is here:

It worked just fine. Thanks for the help and also for the theory tips.

Collectives™ on Stack Overflow

Add c++ compiler flags using CMake

1 Answer 1

1 Comment

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Related