#include <util/delay_basic.h> error with SAMD boards?

[hydronics2]

Is this a SAMD issue? Haven't figured it out yet.

error says no such file or directory.

[nickgammon]

Probably. The functions in delay_basic.h are clearly assembler ones for AVR boards:

/** \ingroup util_delay_basic

    Delay loop using an 8-bit counter \c __count, so up to 256
    iterations are possible.  (The value 256 would have to be passed
    as 0.)  The loop executes three CPU cycles per iteration, not
    including the overhead the compiler needs to setup the counter
    register.

    Thus, at a CPU speed of 1 MHz, delays of up to 768 microseconds
    can be achieved.
*/
void
_delay_loop_1(uint8_t __count)
{
    __asm__ volatile (
        "1: dec %0" "\n\t"
        "brne 1b"
        : "=r" (__count)
        : "0" (__count)
    );
}

/** \ingroup util_delay_basic

    Delay loop using a 16-bit counter \c __count, so up to 65536
    iterations are possible.  (The value 65536 would have to be
    passed as 0.)  The loop executes four CPU cycles per iteration,
    not including the overhead the compiler requires to setup the
    counter register pair.

    Thus, at a CPU speed of 1 MHz, delays of up to about 262.1
    milliseconds can be achieved.
 */
void
_delay_loop_2(uint16_t __count)
{
    __asm__ volatile (
        "1: sbiw %0,1" "\n\t"
        "brne 1b"
        : "=w" (__count)
        : "0" (__count)
    );
}

You can probably make something similar for SAM boards.