PocketMatrix

I'm getting an "unresolved external" linker error when trying to use these PHAL functions:
- static PHAL::Surface* Create( uint16_t* pixels, unsigned width, unsigned height, unsigned pitch ),
- PHAL::Surface( unsigned width, unsigned height, unsigned pitch, uint16_t* pixels, bool bOwnMemory ).
Seems like they're missing in "PocketHAL_xxx.lib"s ...
I need them to feed my own pre-allocated surface memory into PHAL::Surface.
Any solution/workaround?

Thanks.