Hi, i encountered an error while compiling a basic multiplication c code during make clean flash,

__mulsi3

,

memcpy

,

printf

functions are not linked due to unavailable of standard c libraries. I also tried with providing the LDFLAGS=

-lc -lgcc -lm

. Still the issues are not solved. I hereby attaching my error file and make file. Could anyone tell me how to get rid off error and compile. Expecting quick responses. Thanks inadvance

printf

will always be an issue because there is no concept of stdio on a simple microcontroller; the functions

print

and

print_hex

and others have been defined (they make use of the UART) and you can find them defined in various places like the

caravel_board

repository

firmware/chipignite/stub.c

. Just include that file into your program to access

print()

and

print_hex()

. For the others, note that this is a very simple and direct compiler call to

gcc

in the makefile; if

LDFLAGS

is not used in the makefile recipe, then setting

LDFLAGS

isn't going to do anything useful.

-lc -lgcc -lm

are the right flags to pass to

gcc

but you need to add them directly to the call in the makefile.