diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2016-10-19 14:15:59 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-11-18 22:40:42 +1100 |
| commit | 43c9127d94d62a232ed33ed2eab8a08657ce5472 (patch) | |
| tree | 10291a31989894fbefaf3ba53d63813d229895ae | |
| parent | 5e9d0e3d9ea6f771fa9fc9dbb65b54c865702850 (diff) | |
powerpc: Add option to use thin archives
Add an option to use thin archives to build the kernel.
Thin archives are explained in commit a5967db9af51 ("kbuild: allow
architectures to use thin archives instead of ld -r").
This is a gradual way to introduce the option to testers.
Some change to the way we invoke ar is required so it can be used
by scripts/link-vmlinux.sh.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Make it an explicit option not dependant on COMPILE_TEST]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
| -rw-r--r-- | arch/powerpc/Kconfig | 8 | ||||
| -rw-r--r-- | arch/powerpc/Makefile | 4 |
2 files changed, 10 insertions, 2 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b49062b060d2..5ee3dbeab323 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -396,6 +396,14 @@ 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 diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 041fda1e2a5d..0ee7be32b112 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -23,7 +23,7 @@ CROSS32AR := $(CROSS32_COMPILE)ar ifeq ($(HAS_BIARCH),y) ifeq ($(CROSS32_COMPILE),) CROSS32CC := $(CC) -m32 -CROSS32AR := GNUTARGET=elf32-powerpc $(AR) +KBUILD_ARFLAGS += --target=elf32-powerpc endif endif @@ -85,7 +85,7 @@ ifeq ($(HAS_BIARCH),y) override AS += -a$(BITS) override LD += -m elf$(BITS)$(LDEMULATION) override CC += -m$(BITS) -override AR := GNUTARGET=elf$(BITS)-$(GNUTARGET) $(AR) +KBUILD_ARFLAGS += --target=elf$(BITS)-$(GNUTARGET) endif LDFLAGS_vmlinux-y := -Bstatic |