Error while creating executables

[Mahrez]

This is my error:

my project name is : ddd;

when I build this is what happens 

Creating executable: out/gcc-debug//ddd.exe

c:/omnetpp-4.3-src-windows/omnetpp-4.3/mingw/bin/../lib/gcc/mingw32/4.7.2/../../../../mingw32/bin/ld.exe: cannot find -lmiximtestUtils

c:/omnetpp-4.3-src-windows/omnetpp-4.3/mingw/bin/../lib/gcc/mingw32/4.7.2/../../../../mingw32/bin/ld.exe: cannot find -lmixim

c:/omnetpp-4.3-src-windows/omnetpp-4.3/mingw/bin/../lib/gcc/mingw32/4.7.2/../../../../mingw32/bin/ld.exe: cannot find -lmiximbase

c:/omnetpp-4.3-src-windows/omnetpp-4.3/mingw/bin/../lib/gcc/mingw32/4.7.2/../../../../mingw32/bin/ld.exe: cannot find -lmiximmodules

collect2.exe: error: ld returned 1 exit status

make: *** [out/gcc-debug//ddd.exe] Error 1

thanks for helping.

[Farmande]

why????