don't know how to make 'objchk_wxp_x86\i386\debugprint.obj??

请问
NMAKE : fatal error U1073: don't know how to make 'objchk_wxp_x86\i386\debugprin
t.obj'

我的Source是这样的：
TARGETNAME = Wdm1
TARGETTYPE = DRIVER
DRIVERTYPE = WDM
TARGETPATH = OBJ

INCLUDES = $(BASEDIR)\inc;

SOURCES = init.cpp \
dispatch.cpp \
pnp.cpp \
DebugPrint.c \
Wdm1.rc


这个是为什么？

SOURCES = init.cpp \\
dispatch.cpp \\
pnp.cpp \\
DebugPrint.c \\
Wdm1.rc