The creation script looks like:

${ANDROID_HOME}/tools/android create avd -n <avd name> -t android-<level> -f -p <avd name> -c <sd size>

If the platform contains more than one ABI, the following error appears:

Valid ABIs: armeabi-v7a, x86
Error: This platform has more than one ABI. Please specify one using --abi.

Btw. the eror isn't displayed and is silently ignored by android extension.

Developer should be able to specify ABI or other options in creation script.