I am getting the following error messages when compiling. I want to programm a can bus for the c167 using the service routines from the infineon homepage. Can anyone help me to solve the L127 & L128 errors. It would be nice if i get a detailed solution, because a im a novice. assembling START167.A66... compiling prakt2.c... compiling CHKBO16X.C... compiling CHKMO16X.C... compiling CHM1516X.C... compiling CISR16X1.C... compiling DEFMO16X.C... DEFMO16X.C(78): warning C192: '=': value truncated compiling INCAN16X.C... INCAN16X.C(29): warning C2: 'GLOBAL': unknown #pragma/control, line ignored INCAN16X.C(40): warning C2: 'PUBLIC': unknown #pragma/control, line ignored INCAN16X.C(51): warning C140: '_bfld' undefined; assuming 'extern int _bfld()' INCAN16X.C(114): warning C192: '=': value truncated compiling LDMOD16X.C... compiling RDM1516X.C... compiling RDMOD16X.C... compiling SNDMO16X.C... linking... *** ERROR L127: UNRESOLVED EXTERNAL SYMBOL SYMBOL: _bfld MODULE: INCAN16X.obj (INCAN16X) *** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: _bfld MODULE: INCAN16X.obj (INCAN16X) ADDRESS: 00CCH *** ERROR L128: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: _bfld MODULE: INCAN16X.obj (INCAN16X) ADDRESS: 00DCH Program Size: data=694(near=692) const=44(near=44) code=1806 Target not created