Cmake Link Library from Subdirectory
I Am Trying to Include Sfml Sources in My Project. My Directories Are Laid out Like This: Main Sfml (Subtree Synced with the Official Git Repo) Src General...
I am trying to include SFML sources in my project. My directories are laid out like this:
main
SFML (subtree synced with the official git repo)
src
<various modules>
General (here lies the binary)
From the main level I am adding SFML subdirectory first and then src. As I've seen looking at the build log, this produces libraries:
sfml‑system
sfml‑window
sfml‑network
sfml‑graphics
sfml‑audio
sfml‑main
Now I want to link them to my binary in the General directory like this:
add_executable(main ${main_SRCS})
target_link_libraries (main
sfml‑system
sfml‑window
sfml‑network
sfml‑graphics
sfml‑audio
sfml‑main
# Other stuff here
)
But I get:
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lsfml‑system
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lsfml‑window
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lsfml‑network
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lsfml‑graphics
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lsfml‑audio
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lsfml‑main
Why does CMake try to use system libraries instead of those it just built and how do I fix this?
1 Answer
This should just work.
Tried the following with Visual Studio generator on Windows and Makefile generator on Linux on CMake 3.2:
cmake_minimum_required(VERSION 2.8)
project(test)
add_subdirectory(SFML-2.2)
add_executable(foo bar.cpp)
target_link_libraries(foo sfml-system)
SFML is built correctly and foo links correctly to sfml-system.
The fact that you build your executable from another subdirectory should not have an impact here.
Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.
