We'll start by installing Sublime GDB using the Package Control. Let's open the command palette by pressing Ctrl + Shift + P in Windows or Linux, and Command + Shift + P in OS X. Then choose Install Package and install the SublimeGDB package. After installing, we'll need to configure SublimeGDB to make it work. Let's create a new Hello World C file, hello.c:

#include <stdio.h>

int main(void)
{
   printf("Hello World!
");
   return 0;
}

Make sure this is the only file in our current project, and save the project by going to Project | Save Project As... in the Sublime menu. After the project has been saved, let's edit it by going to Project | Edit Project. A new empty JSON project file will be opened. We'll need to add the following to make SublimeGDB work:

{
    "folders":
    [
        {
            "path": "C:\Users\Danpe\Desktop\src",
        },
    ],
    "settings":
    {
        "sublimegdb_workingdir": "${folder:${project_path:hello.exe}}",
        // NOTE: You MUST provide --interpreter=mi for the plugin to work
        "sublimegdb_commandline": "gdb --interpreter=mi C:\Users\Danpe\Desktop\src\hello.exe"
    }
}

This JSON sets our project's folders and settings for SublimeGDB to work. Before trying out GDB, let's compile our C code first by executing the following code:

gcc –g hello.c –o hello.exe

This will compile our C code in the debug mode, and the output file will be named hello.exe. After compiling, we can open the code and start setting breakpoints by going to the desired line and pressing F9.

After toggling a breakpoint, we'll press F5 to run our executable using SublimeGDB:

In the preceding screenshot, we can see our breakpoint on line 5. After pressing F11 to Step Into, we are currently on line 6. At the bottom, we can see the current variables, callstack, threads, and more.

The following table shows a quick summary of all the required shortcuts for debugging with SublimeGDB: