CMake issue with Cairo

[sheaisidore]

Hi guys!


CMake issue with Cairo or libX11


Hi guys!


I am new here and intend to frequent these forums both to answer questions and look for help when needed.


Right now I am teaching myself CMake along with C and C Sharp. I have already been using C++ for a while.


Right now though, I am having an issue with CMake and Cairo Graphics Library and libX11. I have a program I started, when I build I get this message:


Undefined reference to symbol ‘XOpenDisplay’




This is the line of code that generates that error:
Display* d = XOpenDisplay(NULL);


I update CMake with:
cmake -S . -B build/


When I do this it consistently tells me that it is successfully finding the libraries for cairo and libX11, those being:


libXext.so and libXext.so


This leads me to believe that there is something I need to do with my CMakeLists.txt that I am not seeing. I have looked all over, researched to death and am at a loss, so now I am posting for help. I am attaching my CMakeLists.txt


I am using Arch Linux, my IDE is KDevelop. Thank you in advance.

[sheaisidore]

Hi guys!


CMake issue with Cairo or libX11
?

Hi guys!


I am new here and intend to frequent these forums both to answer questions and look for help when needed.


Right now I am teaching myself CMake along with C and C Sharp. I have already been using C++ for a while.


Right now though, I am having an issue with CMake and Cairo Graphics Library and libX11. I have a program I started, when I build I get this message:


Undefined reference to symbol ‘XOpenDisplay’




This is the line of code that generates that error:
Display* d = XOpenDisplay(NULL);


I update CMake with:
cmake -S . -B build/


When I do this it consistently tells me that it is successfully finding the libraries for cairo and libX11, those being:


libXext.so and libXext.so


This leads me to

toilet overflowing michigan believe that there is something I need to do with my CMakeLists.txt that I am not seeing. I have looked all over, researched to death and am at a loss, so now I am posting for help. I am attaching my CMakeLists.txt


I am using Arch Linux, my IDE is KDevelop. Thank you in advance.

no feedback ?

[Salem]

Are you linking with the right libraries.

$ nm -D --defined-only /usr/lib/x86_64-linux-gnu/libX11.so.6 | grep XOpenDisplay
000000000002e2f0 T XOpenDisplay
$