Sorry for responding so late. My first and primary impression is that your buildenvironment is compromized, and maybe even your Linux-installation. As can be seen, the package libtool is reported missing which points to a corrupted package administration. The build is started anyhow, it cannot find an essential file that should there in the driver directory. This also points to a compromizd Linux-installation.

I would try repairing the opkg stuff (there options to do that). If libtool can be revived, I would clone the buildenvironent in another drectory fresh from the gits, put your changes, if any, into it and work from that.

Regards,

Audioniek.