gnu gmake question

[Byerley, Seth]

Hello,

I could not seem to find any documentation on using a backwards 
slash \ explicitly in a variable declaration from within a 
makefile that is in turn built by using gmake. 



Here is the context in which I need it:

ifdef _dos

SRC_PATH = ..\src\$(LIB_NAME)
SOURCE_PATH = $(SRC_PATH)\


pre_build:
        @$(CP) -f $(SOURCE_PATH)*.rc  

I need the backslash to be included in the variable definition,
not treated as a new line.

I would appreciate it if you could point me in the right direction.  

Thanks,
Seth Byerley