kbuild: thin archives make default for all archs

Make thin archives build the default, but keep the config option
to allow exemptions if any breakage can't be quickly solved.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Nicholas Piggin 2017-06-09 15:24:17 +10:00 committed by Masahiro Yamada
parent 827880ec26
commit 799c434154
3 changed files with 5 additions and 14 deletions

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@ -31,7 +31,7 @@ you probably needn't concern yourself with isdn4k-utils.
====================== =============== ========================================
GNU C 3.2 gcc --version
GNU make 3.81 make --version
binutils 2.12 ld -v
binutils 2.20 ld -v
util-linux 2.10o fdformat --version
module-init-tools 0.9.10 depmod -V
e2fsprogs 1.41.4 e2fsck -V
@ -75,10 +75,9 @@ You will need GNU make 3.81 or later to build the kernel.
Binutils
--------
Linux on IA-32 has recently switched from using ``as86`` to using ``gas`` for
assembling the 16-bit boot code, removing the need for ``as86`` to compile
your kernel. This change does, however, mean that you need a recent
release of binutils.
The build system has, as of 4.13, switched to using thin archives (`ar T`)
rather than incremental linking (`ld -r`) for built-in.o intermediate steps.
This requires binutils 2.20 or newer.
Perl
----

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@ -511,7 +511,7 @@ config CC_STACKPROTECTOR_STRONG
endchoice
config THIN_ARCHIVES
bool
def_bool y
help
Select this if the architecture wants to use thin archives
instead of ld -r to create the built-in.o files.

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@ -472,14 +472,6 @@ config MPROFILE_KERNEL
depends on PPC64 && CPU_LITTLE_ENDIAN
def_bool !DISABLE_MPROFILE_KERNEL
config USE_THIN_ARCHIVES
bool "Build the kernel using thin archives"
default n
select THIN_ARCHIVES
help
Build the kernel using thin archives.
If you're unsure say N.
config IOMMU_HELPER
def_bool PPC64