iar工程转keil，vector.c怎么移植

water

rt,移植遇到好多问题

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#pragma language=extended
#pragma segment="CSTACK"

void __iar_program_start( void );

#pragma location = ".intvec"
/* STM32F10x Vector Table entries */
const intvec_elem __vector_table[] =
{
// { .__ptr = __sfe( "CSTACK" ) },
        (void *)(0x20002000),
  __iar_program_start,

结果提示： Error: L6218E: Undefined symbol __iar_program_start (referred from stm32f10xvector.o).