This file does not exist and is not used anywhere, and depending on it causes WITH_META_MODE to never do the fast incremental build.
drm-kmod❯ ls -la /usr/home/val/os/target/base-obj/usr/home/val/os/base/amd64.amd64/sys/GENERIC/ | rg opt_c
-rw-r--r-- 1 val val 0 May 5 06:20 opt_callout_profiling.h
-rw-r--r-- 1 val val 0 May 5 06:20 opt_cam.h
-rw-r--r-- 1 val val 49 May 5 06:20 opt_capsicum.h
-rw-r--r-- 1 val val 0 May 5 06:20 opt_carp.h
-rw-r--r-- 1 val val 0 May 5 06:20 opt_cc.h
-rw-r--r-- 1 val val 0 May 5 06:20 opt_cd.h
-rw-r--r-- 1 val val 0 May 5 06:20 opt_cfi.h
-rw-r--r-- 1 val val 0 May 5 06:20 opt_clock.h
-rw-r--r-- 1 val val 30 May 5 06:20 opt_config.h
-rw-r--r-- 1 val val 17 May 5 06:20 opt_cpu.h
-rw-r--r-- 1 val val 0 May 5 06:20 opt_cy_pci_fastintr.h
This file does not exist and is not used anywhere, and depending on it causes
WITH_META_MODEto never do the fast incremental build.