Problem to build sipx

hi,i have a problem when i build the projects sipx,i have this error message :
"
sipXcallLib:
# Phony target (prerequisite of .PHONY).
# Implicit rule search has not been done.
# Implicit/static pattern stem: `sipXcallLib'
# File does not exist.
# File has not been updated.
# commands to execute (from `top.mak', line 35):
$(MAKE) -C $@


sipXproxy:
# Phony target (prerequisite of .PHONY).
# Implicit rule search has not been done.
# Implicit/static pattern stem: `sipXproxy'
# File does not exist.
# File has not been updated.
# commands to execute (from `top.mak', line 35):
$(MAKE) -C $@
.
.
.
.
"
And it's that it for all files,if you have a solution,i'm here.Thanks.