Problem while installing lessitf

Hello, while installing lesstif I get: TextOut.c: In function 'FontInit': TextOut.c:369: error: invalid lvalue in assignment TextOut.c:369: error: invalid lvalue in assignment TextOut.c: In function '_XmTextNextX': TextOut.c:937: warning: pointer targets in passing argument 3 of 'XftTextExtents8' differ in signedness TextOut.c: In function '_XmOut_FontTextWidth': TextOut.c:3343: warning: pointer targets in passing argument 3 of 'XftTextExtents8' differ in signedness make[2]: *** [TextOut.lo] Error 1 make[1]: *** [all-recursive] Error 1 make: *** [all-recursive] Error 1 What can I do? I use MacPorts Version 1.400 Thanks and bye.