I am also having trouble compiling examples of gsm-sheild-arduino ( Google Code Archive - Long-term storage for Google Code Project Hosting. ) library. I Get list of errors.
I oppened up WStrings.h file and saw the following line already there:
#define F(string_literal) (reinterpret_cast<const __FlashStringHelper *>(PSTR(string_literal)))
Can someone suggest what might be wrong with gsm-shield-arduino library?
regards