https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221107
--- Comment #7 from Mark Millard <mar...@dsl-only.net> ---
For reference for how aha.kld and agp.kld are
produced:
# Meta data file
/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/sys/GENERICvtsc-NODBG/modules/usr/src/sys/modules/aha/aha.kld.meta
CMD ld -m elf32ppc_fbsd -d -warn-common -r -d -o aha.kld aha.o aha_isa.o
CMD ctfmerge -L VERSION -g -o aha.kld aha.o aha_isa.o
CMD :> export_syms
CMD awk -f /usr/src/sys/conf/kmod_syms.awk aha.kld export_syms | xargs -J%
objcopy % aha.kld
CWD
/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/sys/GENERICvtsc-NODBG/modules/usr/src/sys/modules/aha
TARGET aha.kld
# Meta data file
/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/sys/GENERICvtsc-NODBG/modules/usr/src/sys/modules/agp/agp.kld.meta
CMD ld -m elf32ppc_fbsd -d -warn-common -r -d -o agp.kld agp.o agp_if.o
agp_apple.o
CMD ctfmerge -L VERSION -g -o agp.kld agp.o agp_if.o agp_apple.o
CMD echo agp_find_device agp_state agp_acquire
agp_release agp_enable agp_alloc_memory
agp_free_memory agp_bin
d_memory agp_unbind_memory agp_memory_info > export_syms
CMD awk -f /usr/src/sys/conf/kmod_syms.awk agp.kld export_syms | xargs -J%
objcopy % agp.kld
CWD
/usr/obj/powerpcvtsc_clang/powerpc.powerpc/usr/src/sys/GENERICvtsc-NODBG/modules/usr/src/sys/modules/agp
TARGET agp.kld
It looks like (via kmod_syms.awk) objcopy is
explicitly turning various R_PPC_PLTREL24
examples into LOCAL symbols.
May be before clang 5 these were not
R_PPC_PLTREL24 ?
They are now and the conversion to LOCAL while
keeping R_PPC_PLTREL24 is rejected by:
ppc_elf_check_relocs
which in turn stops ld from producing the
matching .full files. And that in turn stops
the buildkernel .
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