Bringing Ncurses library problem to your attention.

[killrpenguin]

I am a newer developer and am not sure I understand enough about what is going on with your cmake setup to make a pull request for solving this very minor problem. I had a linking issue while trying to install glslViewer on my Gentoo Linux laptop and after researching and solving the problem I thought I'd bring it to your attention.

Ncurses is sometimes split in two libraries, llibncurses and libtinfo. During linking -lncurses was not enough to link the libraries to the glslViewer executable. This is the verbose output of the linking error I got during installation:

/usr/bin/cmake -E cmake_link_script CMakeFiles/glslViewer.dir/link.txt --verbose=1
/usr/lib/llvm/19/bin/clang++ -rdynamic CMakeFiles/glslViewer.dir/src/main.cpp.o
CMakeFiles/glslViewer.dir/src/core/sandbox.cpp.o
CMakeFiles/glslViewer.dir/src/core/sceneRender.cpp.o
CMakeFiles/glslViewer.dir/src/core/uniforms.cpp.o
CMakeFiles/glslViewer.dir/src/core/tools/console.cpp.o
CMakeFiles/glslViewer.dir/src/core/tools/record.cpp.o
CMakeFiles/glslViewer.dir/src/core/tools/text.cpp.o
CMakeFiles/glslViewer.dir/src/core/tools/tracker.cpp.o -o glslViewer
deps/vera/src/libvera.a -lncurses -lpthread -ldl deps/liblo/cmake/liblo.a -latomic -lavdevice -lavfilter -lavformat -lswscale -lavcodec -lswresample -lavutil deps/vera/deps/glfw/src/libglfw3.a -Wl,-Bstatic -lrt -Wl,-Bdynamic -lm
/usr/lib64/libGLX.so /usr/lib64/libOpenGL.so -ldl -lm
/usr/bin/x86_64-pc-linux-gnu-ld.bfd: CMakeFiles/glslViewer.dir/src/core/tools/console.cpp.o: undefined reference to symbol 'stdscr'
/usr/bin/x86_64-pc-linux-gnu-ld.bfd: /usr/lib64/libtinfo.so.6: error adding symbols: DSO missing from command line
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [CMakeFiles/glslViewer.dir/build.make:227: glslViewer] Error 1
make[2]: Leaving directory '/home/david/Programming/glslViewer/build'
make[1]: *** [CMakeFiles/Makefile2:234: CMakeFiles/glslViewer.dir/all] Error 2
make[1]: Leaving directory '/home/david/Programming/glslViewer/build'
make: *** [Makefile:156: all] Error 2

Some Linux distros include both libncurses and libtinfo automatically, apparently. On Gentoo Linux libtinfo was behind a useflag. https://stackoverflow.com/questions/51924114/ncurses-compiling-stdscr-lib64-libtinfo-so-6-error-adding-symbol stackoverflow post is what helped me solve my issue and apparently this was also the case at one time on Centos.

I found this:

NCURSES_LDFLAGS:INTERNAL=-lncurses;-ltinfo\

In my CMakeCache.txt file after failing to link the executable. I am guessing that this is a ncurses cmake variable that calls both linker flags when the -lncurses flag is called? I don't understand exactly what it means. In my specific case, this was not enough to get the project to link.

To get glslViwer to compile I added the -ltinfo linker flag to link.txt after the -lncurses flag. Hopefully this is helpful in some small way.

Thanks for your time.