PURPOSE: To shorten a processing time by detecting a condition related to a difference on specifications concerning modification of the address value between information processors and generating a code based on the detection result.

CONSTITUTION: When information processors B and B' are different from each other in specifications concerning modification of the address value on a storage area when an assembler output for the information processor B or B' is obtained by a cross compiler, an intermediate next example as the output result of a syntactical analysis part in the case of cross-compiling is retrieved from the rear part to the front part. The condition related to the difference on specifications concerning modification of the address value between information processors B and B' is detected and the code is generated based on the detection result. Thus, the object efficiency is improved and the instruction execution time is shortened.