ahhh... at last...
I found the answer...
here what I did for this SDL work on my KDevelope..
oh yeah.. for more information.. i'm using SuSE 9.0
in Compiler Options.. add this in Linker Flags :
-L/usr/lib -Wl,-rpath,/usr/lib -lSDL -lpthread -I/usr/include/SDL -D_REENTRANT
then check if slang library is installed on your system...
I've checked mine.. and it was an error like it cannot found -islang flags etc.. ( I dont understnad this... :P heheh I'm a Newbie anyway..)
then.. I tried to install slang-devel from the SUSE 9.0 Distribution CD
then... I tried to compile my program again...
walah... Its worked smoothly
hope this information will be usefull for a newbie like me who stuck like I was
thanks for your responses guys