Getting Error in ST Visual Develop

[Cdtm.1]

I am getting the error i posted below , while i build the program.

Anyone know how to solve this error.

Please respond , It is urgent.

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Running Linker

clnk -m Debug\eepr.map -l"C:\Program Files (x86)\COSMIC\FSE_Compilers\CXSTM8\Lib" -o Debug\eepr.sm8 Debug\eepr.lkf 

#error clnk Debug\eepr.lkf:1 symbol _log not defined (Debug\main.o )

 The command: "clnk -m Debug\eepr.map -l"C:\Program Files (x86)\COSMIC\FSE_Compilers\CXSTM8\Lib" -o Debug\eepr.sm8 Debug\eepr.lkf " has failed, the returned value is: 1

exit code=1.

eepr.elf - 3 error(s), 0 warning(s)

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Compiler is COSMIC STM8

Waiting for the valuable reply.

Thank You :)