I'm using Ubuntu 22.04, my IDE is neovim and using CLANG as LSP. There is something messed up with clang package on ubuntu, I'm following this advice on stack overflow to satisfies clangd LSP on neovim. https://askubuntu.com/questions/1449769/clang-cannot-find-iostream
sudo apt install g++-12
to build and run this
cd build
cmake ..
make
./SDL3Test
also don't forgot to run ./setup.sh it will generate compile_commands.json to support clangd LSP.