https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104006
--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Some of the patches before #c13 were just buggy and could cause such errors.
Do you see the above on vanilla trunk?
Can you perhaps patch your Makefile like:
all: $(BUILT_SOURCES) config.h
+ ls -l config.h kinds.h fpu-target.h *.inc
$(MAKE) $(AM_MAKEFLAGS) all-am
and then
make -j64 all > LOG 2>&1
?
