In dorking around with platform.txt (boards.txt doesn't seem to define the link phase), I rewrote the following rule:

recipe.objcopy.hex.pattern

In doing this, I was able to determine that my path wasn't being inherited and instead was being set to

PATH=/usr/bin:/bin:/usr/sbin:/sbin

This ...

Folks:

I just got an ESP32 Thing from Sparkfun and am trying to get the Blink example to work (Mac running El Capitan). I followed the directions on their hookup guide for downloading and installing support for the ESP32 into the Arduino IDE. I set the board, port, speed, etc. and copy/pasta'ed ...