ifeq behaves differently on linux (using GNU Make 3.80) and Solaris (using GNU Make 3.81)

[springer83]

HI ,
       I am porting an application from linux to solaris but ifeq behaves
differently on  linux (using GNU Make 3.80) and Solaris (using GNU Make
3.81) ,

Below is the snippet wat i am using on linux :
" " "
" " "
ifeq ($(OS), linux)
export CPPFLAGS += -DOS_LINUX -D_GNU_SOURCE -D_REENTRANT
echo "HIIIIIII"
endif
" " "
" " "
If i build the above snippet on linux it says ::: *** missing separator. 
Stop.


********************************************************************
Below is the snippet wat i am using on Solaris :
" " "
" " ""
ifeq ($(OS),SunOS)
export CPPFLAGS += -DOS_SOLARIS -D_GNU_SOURCE -D_REENTRANT
echo "HIIIIIII"
endif
" "" "
" "" "
If i build the above snippet on Solaris :::: make doesn't crib , but never
enter's the ifeq condition ...

The  OS variable is getting set to SunOS ,when i echoed..

Can anyone throw some light on this ....thanks in advance 

regards
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