Hi! > > Also, can someone help me with list of functions RIOT is actually using > > from Newlib. ? > The RIOT core itself mainly uses printf for debugging. If you disable > that (or provide your own minimal version of printf), it should compile > without any C library. > > Apart from that, some modules use the string functions (strcmp, strtok), > memcpy, memmove, memset, malloc, printf/sprintf, ... > > Really depends on the used modules and application.
You could add -nostdlib to the LINKFLAGS and compile, e.g. hello-world to see
what is missing withoug Newlib. For some boards (most of the ARM Cortex-M
boards) you'll have to comment out this line:
export LINKFLAGS += -specs=nano.specs -lc -lnosys
in boards/${BOARD}/Makefile.include.
Core and cpu itself reveals requirements for:
* __libc_init_array
* printf
* strncpy
* puts
* memcpy
Cheers,
Oleg
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