Compilation with ant of AIRSDK4.0

I've been developing on FlashBuilder4.6 (AIRSDK3.5) now.

I was among the build from compiled using ant.

Should be changed to 3.5 to 4.0 the AIRSDK me.

However, I will fail to compile in the method of until now.

I will fail in part of <mxmlc> of ant.

Will it need a new setting option?

Do I need additional settings such as the FLEX_HOME for AIRSDK?

Please tell me if you know.