compile driver failed when ld
The kernel has to be compiled using clang as well. Kernel and modules compiler have to match.
I already compiled using clang with lto and booted it successfully. But I failed to compile nvidia driver. I reproduce that later.
It will failed to compile like the pic when I enable the kernel’s lto. Fortunately I found old module can be used in the new kernel
You need to set LD to lld.
I already set lld as default LD in my distro. It’s able to compile others with lld. But it seems that the install script use ld.bfd to build the nvidia driver.
A quick glance at the kbuild script makes me believe it can be set by the LD env variable, did you try to set that?
It’s ok in Linux 5.12 rc7