embedXCode + LaunchPad + realloc() = "...not declared in this scope"

I am using embedXCode+ on a Launchpad MSP430

 

 

I am trying to use arduino-menusystem:  https://github.com/jonblack/arduino-menusystem. The MenuSystem.cpp uses realloc(). While this works fine if the board is Arduino Uno, I get a "not declared in this scope" when building for the Launchpad.

 

Is there a better dynamic memory allocation routine to use when writing for the Arduino IDE? OR advice on how to fix this? (thank you)