title: Undefined symbol SystemInit(referred from startup_stm32f2xx.o) while building using Keil STM32
body: <p>I am using STM32F207VC controller. and I am using uvision4 IDE, When I try to compile a simple code, I get the error tst1.axf: Error: L6218E: Undefined symbol SystemInit (referred from startup_stm32f2xx.o). . I have place stm32f2x file to my project directory.</p>
  
  <p>But still the same problem.</p>
  
  <p>Please help in resolving this.</p>
  
  <p>Thanks</p>