so, I get a below error message
----------------------------------------------------
Building target “Simulator” of project “EDGELIB” with configuration “Debug” — (1 error)
duplicate symbol _main in /Project/EDGELIB/Library/Simulator/libedge.a(cevent.o) and /Project/EDGELIB/build/EDGELIB.build/Debug-iphonesimulator/Simulator.build/Objects-normal/i386/main-26D6EFA4.o
cd /Project/EDGELIB
setenv MACOSX_DEPLOYMENT_TARGET 10.5
setenv PATH
----------------------------------------------------

please help me. What can i do for build process?
What's the problem?