gdbinit

Copy folder Xcode.app/Contents/Developer/Library/Xcode/Templates/Project Templates/Mac/Application/Command Line Tool.xctemplate folder
to ~/Library/Developer/Xcode/Templates/Custom/

Modifity the plist to the following. Scroll down when choosing new project template and should be there in Custom area.

The trick is this:
		    <key>Project</key>
		    <dict>
		         <key>SharedSettings</key>
		         <dict>

gdbinit

/* retrieve the current function information - we need this to extract the stack frame */
func_t *current_function = get_func(current_addr);
/* retrieve the stack frame for this function - IDA encapsulates it as struc_t */
struc_t *frame = get_frame(current_function);
/* now each variable is a member of the structure - Chris Eagle book shows how to iterate over this */
for (int i = 0; i < frame->memqty; i++)
{
  /* so each variable is a member - we can retrieve its netnode id via the .id field - in case of structures/stack variables
   * this is an address starting by 0xFF but it's still a netnode like everything else in IDA
   */