xorg-server-1.7.7_4,1 build fails

[Yuri]

Making all in Xext
   CC    bigreq.o
bigreq.c:39:41: error: X11/extensions/bigreqsproto.h: No such file or 
directory
bigreq.c: In function 'BigReqExtensionInit':
bigreq.c:50: error: 'XBigReqExtensionName' undeclared (first use in this 
function)
bigreq.c:50: error: (Each undeclared identifier is reported only once
bigreq.c:50: error: for each function it appears in.)
bigreq.c: In function 'ProcBigReqDispatch':
bigreq.c:58: error: 'xBigReqEnableReq' undeclared (first use in this 
function)
bigreq.c:58: error: 'stuff' undeclared (first use in this function)
bigreq.c:58: error: expected expression before ')' token
bigreq.c:59: error: 'xBigReqEnableReply' undeclared (first use in this 
function)
bigreq.c:59: error: expected ';' before 'rep'
bigreq.c:60: warning: ISO C90 forbids mixed declarations and code
bigreq.c:65: error: 'X_BigReqEnable' undeclared (first use in this function)
bigreq.c:69: error: 'rep' undeclared (first use in this function)
gmake[1]: *** [bigreq.lo] Error 1
gmake: *** [all-recursive] Error 1
*** Error code 1


Yuri