<if cond="TOOLKIT=='MAC'">$(ADVANCED_MAC_HDR)</if>
<if cond="TOOLKIT=='COCOA'">$(ADVANCED_COCOA_HDR)</if>
<if cond="TOOLKIT=='MOTIF'">$(ADVANCED_UNIX_HDR)</if>
<if cond="TOOLKIT=='MAC'">$(ADVANCED_MAC_HDR)</if>
<if cond="TOOLKIT=='COCOA'">$(ADVANCED_COCOA_HDR)</if>
<if cond="TOOLKIT=='MOTIF'">$(ADVANCED_UNIX_HDR)</if>