Hi,
I'm using ARM uVision 5.10.0.2 for Cortex-M. For a terminal like application I have to work with wide chars (wchar_t) and send them over the IIC-Interface. Therefore I want to write/read the formatted string into/from a buffer with vswprintf() / vswscanf() functions. They are provided by wchar.h of the ARM C-Lib. Also included in the Project are stdio.h, wctype.h and stdarg.h.
Compiling ends without error or warning. But Linker ends up with the following:
linking... .\OBJ\E1317_Steuerung.axf: Error: L6218E: Undefined symbol __c89vswprintf (referred from i2c.o). .\OBJ\E1317_Steuerung.axf: Error: L6218E: Undefined symbol vswscanf (referred from i2c.o). Not enough information to list image symbols. Finished: 1 information, 0 warning and 2 error messages. ".\OBJ\E1317_Steuerung.axf" - 2 Error(s), 0 Warning(s). Target not created
Has anyone an idea why the Linker doesn't find the symbols in the library? (printf() and scanf()-Functions from stdio.h without wide-char support can be integrated without problems)