Converting C/C++ Code to D (#define extern)

[exiquio]

Good day to all.

I am writing an chess engine based upon an established C++ engine as a 
interesting, yet practical excersise.

While translating a header file (I am not proficiant in C\C++) I ran into 
some things I find difficult findinf a way to do in D. Here are a few 
examples of what I am talking about (w/ no particular order):

CODE:

#define PawnListStart(pos,side) PieceListStart(pos,PawnOfColour(side))
#define KnightListStart(pos,side) PieceListStart(pos,KnightOfColour(side))
#define BishopListStart(pos,side) PieceListStart(pos,BishopOfColour(side))
#define RookListStart(pos,side) PieceListStart(pos,RookOfColour(side))
#define QueenListStart(pos,side) PieceListStart(pos,QueenOfColour(side))


#define MovePiece(pos,from,to) do {                 \
    PieceList(pos,to) = PieceList(pos,from);            \
    PrevPiece(pos,NextPiece(pos,to)) = to;      \
    NextPiece(pos,PrevPiece(pos,to)) = to;      \
  } while(0)


extern uint8 PawnRank[2][128];
extern attack_data_t AttackData_[256];
extern attack_data_t *AttackData;

END CODE

Forgive me for being ignorant and thanks in advance.