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    Subject[PATCH 2/5] efi/libstub/arm: add support for building with clang
    Date
    Use cc-options call for -mno-single-pic-base since the option is
    not available in clang. LLVM/clang always assumes a fixed
    displacement between text/data and hence uses PC relative
    addressing.

    Signed-off-by: Stefan Agner <stefan@agner.ch>
    ---
    drivers/firmware/efi/libstub/Makefile | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
    index 7b3ba40f0745..2bf69cca0d87 100644
    --- a/drivers/firmware/efi/libstub/Makefile
    +++ b/drivers/firmware/efi/libstub/Makefile
    @@ -13,7 +13,8 @@ cflags-$(CONFIG_X86) += -m$(BITS) -D__KERNEL__ -O2 \

    cflags-$(CONFIG_ARM64) := $(subst -pg,,$(KBUILD_CFLAGS)) -fpie
    cflags-$(CONFIG_ARM) := $(subst -pg,,$(KBUILD_CFLAGS)) \
    - -fno-builtin -fpic -mno-single-pic-base
    + -fno-builtin -fpic \
    + $(call cc-option,-mno-single-pic-base,)

    cflags-$(CONFIG_EFI_ARMSTUB) += -I$(srctree)/scripts/dtc/libfdt

    --
    2.16.2
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