swap clashes with c++ header <functional>

[luni64]

#include "ILI9341_t3.h"
#include <functional>

void setup()
{
}

void loop()
{
}

Does not compile. However, including <functional> before the ILI header works.

The problem is the definition of the swap macro in ILI9341_t3.h which clashes with some definitions in <functional> (and possibly other standard c++ headers)

ILI9341_t3/ILI9341_t3.h

Lines 555 to 559 in ff4bba3

	#ifndef swap
	#define swap(a, b) { typeof(a) t = a; a = b; b = t; }
	#endif

Since the macro is not used in the header you might consider moving its definition to the cpp file to avoid name clashes with other headers.

Also see: https://forum.pjrc.com/threads/59112-TeensyTimerTool?p=246670&viewfull=1#post246670

[PaulStoffregen]

fixed by Kurt's PR