elfutils: Fix debugedit failure in grub
We've seeing occasional debugedit failures in grub during do_package
which in turn are coming from section alignment failures from libelf.
The failures occur when gold is used to link grub instead of ld.bfd.
"readelf -e uhci.module" shows:
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk Inf Al
[12] .note.GNU-stack PROGBITS
00000000 0010ce 000000 00 0 0 1
in a good build and:
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk Inf Al
[24] .note.GNU-stack PROGBITS
00000000 009180 000000 00 0 0 0
in a bad build. The problem is the "Al" (alignment) change from 1 to 0.
If its 0, debugedit complains.
As far as I can tell, the alignment of a zero length section is not
an issue and the check in libelf should check the section size and only
give alignment errors if there is some data to align.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
