What do the __CC_ARM, __ICCARM__, __GNUC__ and __TASKING__ macros mean?

Question

I am working on STM32l151rct6a by stm, I have stumbled upon these MACRO definitions

__CC_ARM, __ICCARM__, __GNUC__, __TASKING__

Does anyone kno

Answer 1

These are compiler specific MACROS and defined in compiler code.For example __ICC is for IAR and __GNU is for GNU compilers.There are some code given in BSP part for STM platform which have dependency on compilers.