commit 3a166fc2d4ef7a6b7e440271ee6bd1799c066605
author Nicholas Piggin <npiggin@gmail.com> Tue Jun 20 01:52:05 2017 +1000
committer Masahiro Yamada <yamada.masahiro@socionext.com> Fri Jun 30 09:03:03 2017 +0900
tree f0c4ea695592ad123e22c85d649ec917796a6652
parent 9a6cfca4f4130444cb02536a4fdf7b6e285c713e

kbuild: handle libs-y archives separately from built-in.o archives

The thin archives build currently puts all lib.a and built-in.o
files together and links them with --whole-archive.

This works because thin archives can recursively refer to thin
archives. However some architectures include libgcc.a, which may
not be a thin archive, or it may not be constructed with the "P"
option, in which case its contents do not get linked correctly.

So don't pull .a libs into the root built-in.o archive. These
libs should already have symbol tables and indexes built, so they
can be direct linker inputs. Move them out of the --whole-archive
option, which restore the conditional linking behaviour of lib.a
to thin archives builds.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>