some arduino libraries cause errors

[zdjurisic]

I'm just guessing that it is the cores issue... So, with that said:

Including certain libraries causes compiling errors. For example,

#include <XWire.h>
#include <XRTClib.h>
RTC_DS1307 RTC;
void setup() {}
void loop() {}

throws:

test_TWI_DS1307:3: error: expected ')' before '*' token

the XRTClib is a copy of the RTClib, in which ony the reference to Wire was changed to XWire. Same thing with a few other libraries.

[zdjurisic]

I should probably mention that the same code, just including Wire and RTClib, compiles fine for, say, Mega2560, or Nano or ProMini on 328 chip

[bombasticbob]

added XMegaForArduino/libraries#6

(this issue left for reference; please post additional comments over in 'libraries')