[Buildroot] [PATCH v2 1/1] boot/edk2: add a new Kconfig option to pass arbitrary build options

[Buildroot] [PATCH v2 1/1] boot/edk2: add a new Kconfig option to pass arbitrary build options

[Julien Olivain via buildroot]

EDK2 build may include extra options. Those are usually in the form
of "-D SOMEFLAG_ENABLE" and might be specific for a processor
architecture or a platform. For example:
"-D NETWORK_HTTP_BOOT_ENABLE", "-D NETWORK_TLS_ENABLE", ...

Those options are generally documented in their respective packages.
See for example:
https://github.com/tianocore/edk2/blob/master/OvmfPkg/README

This commit adds a new Kconfig string option to let the use define
arbitrary build flags.

Signed-off-by: Julien Olivain <ju.o@free.fr>
---
Change v1 -> v2:
- move extra options at the end of EDK2_BUILD_OPTS (Thomas)
---
 boot/edk2/Config.in | 15 +++++++++++++++
 boot/edk2/edk2.mk   |  3 ++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/boot/edk2/Config.in b/boot/edk2/Config.in
index 850b9a39de..168fc296a2 100644
--- a/boot/edk2/Config.in
+++ b/boot/edk2/Config.in
@@ -130,6 +130,21 @@ config BR2_TARGET_EDK2_OVMF_DEBUG_ON_SERIAL
 	  See OVMF README:
 	  https://github.com/tianocore/edk2/blob/master/OvmfPkg/README
 
+config BR2_TARGET_EDK2_EXTRA_BUILD_OPTS
+	string "Extra build options"
+	help
+	  EDK2 build may include extra options. Those are usually in
+	  the form of "-D SOMEFLAG_ENABLE" and might be specific for a
+	  processor architecture or a platform. For example: "-D
+	  NETWORK_HTTP_BOOT_ENABLE", "-D NETWORK_TLS_ENABLE", ...
+
+	  Those options are generally documented in their respective
+	  packages. See for example:
+	  https://github.com/tianocore/edk2/blob/master/OvmfPkg/README
+
+	  This configuration is an arbitrary string that will be
+	  passed to the build command.
+
 config BR2_TARGET_EDK2_FD_NAME
 	string
 	default "OVMF" if BR2_TARGET_EDK2_PLATFORM_OVMF_I386
diff --git a/boot/edk2/edk2.mk b/boot/edk2/edk2.mk
index 05e44c711b..2c089aefca 100644
--- a/boot/edk2/edk2.mk
+++ b/boot/edk2/edk2.mk
@@ -156,7 +156,8 @@ EDK2_BUILD_OPTS += \
 	-n $(BR2_JLEVEL) \
 	-a $(EDK2_ARCH) \
 	-b $(EDK2_BUILD_TYPE) \
-	-p $(EDK2_PACKAGE_NAME)/$(EDK2_PLATFORM_NAME).dsc
+	-p $(EDK2_PACKAGE_NAME)/$(EDK2_PLATFORM_NAME).dsc \
+	$(call qstrip,$(BR2_TARGET_EDK2_EXTRA_BUILD_OPTS))
 
 define EDK2_BUILD_CMDS
 	mkdir -p $(EDK2_BUILD_PACKAGES)
-- 
2.52.0

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Re: [Buildroot] [PATCH v2 1/1] boot/edk2: add a new Kconfig option to pass arbitrary build options

[Thomas Petazzoni via buildroot]

Hello,

On Sun, Jan 04, 2026 at 02:47:55PM +0100, Julien Olivain via buildroot wrote:
> EDK2 build may include extra options. Those are usually in the form
> of "-D SOMEFLAG_ENABLE" and might be specific for a processor
> architecture or a platform. For example:
> "-D NETWORK_HTTP_BOOT_ENABLE", "-D NETWORK_TLS_ENABLE", ...
> 
> Those options are generally documented in their respective packages.
> See for example:
> https://github.com/tianocore/edk2/blob/master/OvmfPkg/README
> 
> This commit adds a new Kconfig string option to let the use define
> arbitrary build flags.
> 
> Signed-off-by: Julien Olivain <ju.o@free.fr>

Thanks, applied to master!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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