chore(clangd): change filetypes and notes on how to get it to recognize some local headers

README.md

@@ -36,6 +36,11 @@ unless you add a `.luarc.json` file with the following content:
 }
 ```
 
+### Clangd
+If `clangd` can't find some headers, then you need to create a `compile_commands.json` file.
+When a `Makefile` is present (or other build tools such as `cmake` are used, look up how to do that online), you can use `bear` as follows to create this file:
+`bear -- make`. That's it
+
 ### Java
 #### jdtls
 Ensure you have jdk21-opnejdk or newer installed. On Arch (and derivatives) you can switch the preferred java version using `archlinux-java set <version name>`

nvim/lua/plugins/lsp/ls/c.lua

@@ -11,7 +11,7 @@ lsp.config("clangd", {
         "--suggest-missing-includes",
         "--clang-tidy",
     },
-    filetypes = { "c", "cpp", "objc", "objcpp", "cuda", "proto", "ino" },
+    filetypes = { "c", "cpp", "objc", "objcpp", "cuda" },
     capabilities = opts.capabilities,
     on_attach = opts.on_attach_no_formatting,
 })