Error make package linux-pf 4.17.5-1

Hello. When I try compile custom kernel with gcc optimization I have this error.

Use linux-pf 4.17.5-1 (2018-08-03 21:07) package from aur.

==> Hit <Y> to use your running kernel's config
    (needs IKCONFIG and IKCONFIG_PROC)

Use running kernel config.

<M> make menuconfig (console menu)
Use make menuconfig

User arch kernel, change only processor family Processor family (Native optimizations autodetected by GCC) --->

==> Hit <G>     :  to create a generic package named linux-pf

after some compile time have this error Take G for linux-pf package name.

  LD [M]  sound/x86/snd-hdmi-lpe-audio.ko 
  LD [M]  virt/lib/irqbypass.ko
==> Entering fakeroot environment...
==> ERROR: Missing package_linux-pf() function for split package 'linux-pf'
==> ERROR: Makepkg was unable to build linux-pf.
==> Restart building linux-pf ? [y/N]
==> ---------------------------------

kernel Linux 4.17.4-pf
processor -  Model name:          Intel(R) Core(TM) i5-2467M CPU @ 1.60GHz