[Buildroot] [PATCH v1 1/1] board/arm-trusted-firmware: override BL31 environment variable error

[Buildroot] [PATCH v1 1/1] board/arm-trusted-firmware: override BL31 environment variable error

[Neal Frager via buildroot]

When building the arm-trusted-firmware, if the host environment has a value
configured in the BL31 variable such as the following:

export BL31=/tmp/bl31.elf

This will cause the build of the bl31.elf to be skipped leading to the
following build error:

make[1]: Nothing to be done for 'bl31'.
And then:
readelf: Error: './output/build/arm-trusted-firmware-custom/build/versal/release/bl31/bl31.elf': No such file

To fix this, clear the BL31 variable in the MAKE_OPTS, so that building the
arm-trusted-firmware will build regardless of the host environment.

Signed-off-by: Neal Frager <neal.frager@amd.com>
---
 boot/arm-trusted-firmware/arm-trusted-firmware.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/boot/arm-trusted-firmware/arm-trusted-firmware.mk b/boot/arm-trusted-firmware/arm-trusted-firmware.mk
index dca16d3960..021ab5c092 100644
--- a/boot/arm-trusted-firmware/arm-trusted-firmware.mk
+++ b/boot/arm-trusted-firmware/arm-trusted-firmware.mk
@@ -162,6 +162,7 @@ endif
 
 ifeq ($(BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31),y)
 ARM_TRUSTED_FIRMWARE_MAKE_TARGETS += bl31
+ARM_TRUSTED_FIRMWARE_MAKE_OPTS += BL31=
 endif
 
 ifeq ($(BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL31_UBOOT),y)
-- 
2.25.1

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Re: [Buildroot] [PATCH v1 1/1] board/arm-trusted-firmware: override BL31 environment variable error

[Luca Ceresoli via buildroot]

On Fri, 5 Sep 2025 13:20:57 +0100
Neal Frager <neal.frager@amd.com> wrote:

> When building the arm-trusted-firmware, if the host environment has a value
> configured in the BL31 variable such as the following:
> 
> export BL31=/tmp/bl31.elf
> 
> This will cause the build of the bl31.elf to be skipped leading to the
> following build error:
> 
> make[1]: Nothing to be done for 'bl31'.
> And then:
> readelf: Error: './output/build/arm-trusted-firmware-custom/build/versal/release/bl31/bl31.elf': No such file
> 
> To fix this, clear the BL31 variable in the MAKE_OPTS, so that building the
> arm-trusted-firmware will build regardless of the host environment.
> 
> Signed-off-by: Neal Frager <neal.frager@amd.com>

Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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Re: [Buildroot] [PATCH v1 1/1] board/arm-trusted-firmware: override BL31 environment variable error

[Luca Ceresoli via buildroot]

On Wed, 10 Sep 2025 09:50:57 +0200
Luca Ceresoli via buildroot <buildroot@buildroot.org> wrote:

> On Fri, 5 Sep 2025 13:20:57 +0100
> Neal Frager <neal.frager@amd.com> wrote:
> 
> > When building the arm-trusted-firmware, if the host environment has a value
> > configured in the BL31 variable such as the following:
> > 
> > export BL31=/tmp/bl31.elf
> > 
> > This will cause the build of the bl31.elf to be skipped leading to the
> > following build error:
> > 
> > make[1]: Nothing to be done for 'bl31'.
> > And then:
> > readelf: Error: './output/build/arm-trusted-firmware-custom/build/versal/release/bl31/bl31.elf': No such file
> > 
> > To fix this, clear the BL31 variable in the MAKE_OPTS, so that building the
> > arm-trusted-firmware will build regardless of the host environment.
> > 
> > Signed-off-by: Neal Frager <neal.frager@amd.com>  
> 
> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
> 

Dang. Messed up with my mailer. Please ignore this R-by!

Apologies,
Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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