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efi/libstub: zboot: Avoid eager evaluation of objcopy flags

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The Make variable containing the objcopy flags may be constructed from
the output of build tools operating on build artifacts, and these may
not exist when doing a make clean.

So avoid evaluating them eagerly, to prevent spurious build warnings.

Suggested-by: Pedro Falcato <pedro.falcato@gmail.com>
Tested-by: Alan Bartlett <ajb@elrepo.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel 2023-05-22 08:24:49 +02:00
parent ac9a78681b
commit 095aabe338
1 changed files with 2 additions and 1 deletions
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3
drivers/firmware/efi/libstub/Makefile.zboot
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@ -32,7 +32,8 @@ zboot-size-len-$(CONFIG_KERNEL_GZIP) := 0
$(obj)/vmlinuz: $(obj)/vmlinux.bin FORCE
$(call if_changed,$(zboot-method-y))
OBJCOPYFLAGS_vmlinuz.o := -I binary -O $(EFI_ZBOOT_BFD_TARGET) $(EFI_ZBOOT_OBJCOPY_FLAGS) \
# avoid eager evaluation to prevent references to non-existent build artifacts
OBJCOPYFLAGS_vmlinuz.o = -I binary -O $(EFI_ZBOOT_BFD_TARGET) $(EFI_ZBOOT_OBJCOPY_FLAGS) \
--rename-section .data=.gzdata,load,alloc,readonly,contents
$(obj)/vmlinuz.o: $(obj)/vmlinuz FORCE
$(call if_changed,objcopy)