Program will not fit into available memory when combining idle profile and camera application

Hi all, I try to combine the code sample of idle profile together with camera. But the camera_app.c code is too big and causing not enough memory space. Anyone has idea on how to fix this or reduce the code size of camera_app.c?

The memory allocation in my cmd file is as following:

MEMORY
{
/* Application uses internal RAM for program and data */
SRAM_CODE (RWX) : origin = 0x20004000, length = 0x12FFF
SRAM_DATA (RWX) : origin = 0x20017000, length = 0x19000
}

Also with: --retain=g_pfnVectors

Thanks!