I tried following the instructions and building for WP750x. So far the legato toolchain is not building. I am getting many linker errors about qmi library.
E.g.
/opt/swi/y22-ext/sysroots/armv7a-neon-poky-linux-gnueabi/usr/lib/libqmi.so.1: undefined reference to `qmi_util_get_std_result_code’
(…many similar lines)
But, it is building without any error for WP76xx. There is some issue in make file for Wp750x i guess. However, I have no idea how to fix it.