How to enable code completion for C/C++ in NetBeans 29 on Ubuntu

[discordDOTtest]

Hi,

how do I turn on the code completion for C/C++ in NetBeans 29 on Ubuntu 24.04?

The plugin is installed

Ccls in installed

But C/C++ is missing in this menu

And there is no code completion for C/C++. (Code completion for PHP is working)

Ctrl+Spacebar says "no suggestions.

Thanks for your help :)

[matthiasblaesing]

ccls/clangd will provide completion, but they require additional setup. The corresponding hint is shown at the top of each C file:

You'll need to create a compile_commands.json for completion to work. See
https://clang.llvm.org/docs/JSONCompilationDatabase.html

[discordDOTtest]

The file compile_commands.json was the key.

For others who need a starting point:

Create a simple main.c file in a folder - in this example in /home/user-name/netbeans/hello-world

#include <stdio.h>

int main(){
    puts("Hello, World!");
    return 0;
}

add this compile_commands.json to the same folder

[
  {
    "directory": "/home/user-name/netbeans/hello-world",
    "command": "/usr/bin/gcc main.c -o main",
    "file": "main.c"
  }
]

and set the path to the json file in Project Properties.