1. modify each dirver's INIT_EXPORT micro. 2. modify the lwip parameters' in rtconfig.h 3. insert keep section .rti_fn* in IAR link file 4. change part id from TM4C129XNCZAD to TM4C1294NCPDT
1. Resize RT_LWIP_SEG_NUM drom 8 to 12 2. modify gcc compile switch, using C99