7 years, 10 months ago.  This question has been closed. Reason: Off Topic

try to compile mbed-blinky project on atollic, but get undefined reference

I got undefined reference on the following functions: realmalloc_r,realrealloc_r,realfree_r,realcalloc_r I skimmed through the mbed-os source and saw their function protoypes in mbed_alloc_wrapper.cpp. However, can anyone tell me where the definitions of those functions inside the mbed source code???? I could not find them at all. Are their definitions defined in some certain default libraries????