+
+if ZIPPY
+ ZPY = zippy.c
+else
+ ZPY =
+endif
+
bin_PROGRAMS = xboard
-xboard_SOURCES = backend.c lists.c pgntags.c xedittags.c xhistory.c zippy.c childio.c moves.c uci.c xengineoutput.c xoptions.c gamelist.c parser.l xboard.c xgamelist.c book.c
+xboard_SOURCES = backend.c lists.c pgntags.c xedittags.c xhistory.c $(ZPY) childio.c moves.c uci.c xengineoutput.c xoptions.c gamelist.c parser.l xboard.c xgamelist.c book.c
AM_CPPFLAGS=-DINFODIR='"$(infodir)"'
AM_LDFLAGS= -lm @XAW_LIBS@