kbuild: improve linker compatibility with lib-ksyms.o build
authorNicholas Piggin <npiggin@gmail.com>
Wed, 23 Nov 2016 16:41:40 +0000 (03:41 +1100)
committerMichal Marek <mmarek@suse.com>
Tue, 29 Nov 2016 14:58:57 +0000 (15:58 +0100)
commit9da2f584b54fa4bf0df4db220cd89b6c7e691c6e
tree1c3d6d0a7af3e5425d203738c91e45caab7f7e80
parent7e441fe759b1133ac995a3bbaee5383a016684a8
kbuild: improve linker compatibility with lib-ksyms.o build

lib-ksyms.o is created by linking an empty input file with a linker
script containing the interesting bits. Currently the empty input file
is an archive containing nothing, however this causes the gold linker
to segfault.

I have opened a bug against gold

  https://sourceware.org/bugzilla/show_bug.cgi?id=20767

However this can be worked around by assembling an empty file to link
with instead. The resulting lib-ksyms.o is slightly larger (seemingly
due to empty .text, .data, .bss setions added), but final linked
output should not be changed.

Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
scripts/Makefile.build