Coocox CoIDE for STM32 F401RE NUCLEO, blink test e littlle changes for compiling with this device
more info from code builder to http://stm32f4-discovery.com/2014/04/first-time-with-stm32f429-discovery/
blink test size is 4k with gcc compiler, is ok!
you can use more powerfull drivers for stm32 with this repository or my fork: https://github.com/MaJerle/stm32f429