Failed to build grub2 on the ppc64le platform

[yuucyf]

When building grub2 on the ppc64le platform, I encountered some issues that 
were resolved.
However, in the end, I still encountered an error, as follows:


.......
cat kernel_syms.lst > syminfo.lst.new
for m in increment.module version.module disk.module trig.module 
cmostest.module cmosdump.module ...
......
do \
  sh gensyminfo.sh $m >> syminfo.lst.new || exit 1; \
done
mv syminfo.lst.new syminfo.lst
cat syminfo.lst | sort | gawk -f ../../grub-core/genmoddep.awk > moddep.lst || 
(rm -f moddep.lst; exit 1)
.TOC. in adler32 is not defined
.TOC. in affs is not defined
.TOC. in afs is not defined
.TOC. in afsplitter is not defined
.TOC. in appended_signature_test is not defined
.TOC. in appendedsig is not defined
.TOC. in archelp is not defined
.TOC. in asn1 is not defined
.TOC. in bfs is not defined
.TOC. in bitmap is not defined
.TOC. in bitmap_scale is not defined
.TOC. in blocklist is not defined
.TOC. in blscfg is not defined
.TOC. in boot is not defined
.TOC. in bswap_test is not defined
......
.TOC. in zfs is not defined
.TOC. in zfscrypt is not defined
.TOC. in zfsinfo is not defined
.TOC. in zstd is not defined
make[3]: *** [Makefile:53817: moddep.lst] Error 1


Have the community members encountered such issues?
Is there any experience or reference for successfully building Grub2 on the 
ppc64le platform?