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Subject[PATCH 1/3] powerpc/boot: Only use '-mabi=elfv2' with CONFIG_PPC64_BOOT_WRAPPER
When CONFIG_PPC64_ELF_ABI_V2 is enabled with clang through
CONFIG_PPC64_BIG_ENDIAN_ELF_ABI_V2, building the powerpc boot wrapper
in 32-bit mode (i.e. with CONFIG_PPC64_BOOT_WRAPPER=n) fails with:

error: unknown target ABI 'elfv2'

The ABI cannot be changed with '-m32'; GCC silently accepts it but clang
errors out. Only provide '-mabi=elfv2' when CONFIG_PPC64_BOOT_WRAPPER is
enabled, which is the only way '-mabi=elfv2' will be useful.

Tested-by: "Erhard F." <erhard_f@mailbox.org>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
arch/powerpc/boot/Makefile | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index d32d95aea5d6..0d4a8e8bdcab 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -44,6 +44,9 @@ BOOTCFLAGS += -m64 -mcpu=powerpc64le
else
BOOTCFLAGS += -m64 -mcpu=powerpc64
endif
+ifdef CONFIG_PPC64_ELF_ABI_V2
+BOOTCFLAGS += $(call cc-option,-mabi=elfv2)
+endif
else
BOOTCFLAGS += -m32 -mcpu=powerpc
endif
@@ -55,9 +58,6 @@ BOOTCFLAGS += -mbig-endian
else
BOOTCFLAGS += -mlittle-endian
endif
-ifdef CONFIG_PPC64_ELF_ABI_V2
-BOOTCFLAGS += $(call cc-option,-mabi=elfv2)
-endif

BOOTAFLAGS := -D__ASSEMBLY__ $(BOOTCFLAGS) -nostdinc

--
2.39.2

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