[PATCH] efi_loader: move efi_var_seed.o to objtree

[Jon Mason]

On Fri, Jun 19, 2026 at 12:46 PM Heinrich Schuchardt <xypron.glpk at gmx.de> wrote:
>
> Am 19. Juni 2026 17:58:57 MESZ schrieb Jon Mason <jon.mason at arm.com>:
> >With commit bd3f9ee679b4d1456d0d3c261ab76788950e6096
> >(kbuild: Bump the build system to 6.1), there is an issue when trying to
> >build out of tree, where efi_var_seed.S wants ubootefi.var to be in the
> >object tree, but lib/efi_loader/efi_var_seed.o wants ubootefi.var to be
> >in the source tree.
>
> Ubootefi.var is an optional file with the EFI security database. Why would you ever put it into the build directory?

I didn't know that was a limitation.

Would you prefer that I make a change like:
-$(obj)/efi_var_seed.o: $(srctree)/$(EFI_VAR_SEED_FILE)
+$(obj)/efi_var_seed.o: $(srctree)/lib/efi_loader/$(EFI_VAR_SEED_FILE)

This seems to work for my use case, and still keeps it in the src directory.

Thanks,
Jon

>
> Heinrich
>
> >
> >If we change efi_var_seed.o to look in the objtree, then it should work
> >in both local and out-of-tree.  However, it would require anything
> >previously working to put ubootefi.vars to the objtree, but it's broken
> >now anyway.
> >
> >Signed-off-by: Jon Mason <jon.mason at arm.com>
> >---
> > lib/efi_loader/Makefile | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> >diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile
> >index f490081f6542..9c836f6ee237 100644
> >--- a/lib/efi_loader/Makefile
> >+++ b/lib/efi_loader/Makefile
> >@@ -74,7 +74,7 @@ obj-$(CONFIG_EFI_ECPT) += efi_conformance.o
> > obj-$(CONFIG_EFI_DEBUG_SUPPORT) += efi_debug_support.o
> >
> > EFI_VAR_SEED_FILE := $(subst $\",,$(CONFIG_EFI_VAR_SEED_FILE))
> >-$(obj)/efi_var_seed.o: $(srctree)/$(EFI_VAR_SEED_FILE)
> >+$(obj)/efi_var_seed.o: $(objtree)/$(EFI_VAR_SEED_FILE)
> >
> > ifeq ($(CONFIG_EFI_CAPSULE_AUTHENTICATE),y)
> > capsule_crt_path=($(subst $(quote),,$(CONFIG_EFI_CAPSULE_CRT_FILE)))
>