From: Yann Gautier <yann.gautier@st.com>
Date: Mon, 24 Apr 2023 11:38:12 +0000 (+0200)
Subject: build!: check boolean flags are not empty
X-Git-Tag: baikal/aarch64/sdk5.10~1^2~32^2
X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=1369fb82c8e809c1a59a0d99184dbfd2d0b81afa;p=arm-tf.git

build!: check boolean flags are not empty

For numeric flags, there is a check for the value to be set. Do the same
for boolean flags. This avoids issues where a flag is defined but
without a value, leading to potential unexpected behaviors.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: Ib00da2784339471058887e93434d96ccba2aebb2
---

diff --git a/make_helpers/build_macros.mk b/make_helpers/build_macros.mk
index 9ca6bdf0c..cb204a824 100644
--- a/make_helpers/build_macros.mk
+++ b/make_helpers/build_macros.mk
@@ -73,6 +73,7 @@ endef
 # Convenience function for verifying option has a boolean value
 # $(eval $(call assert_boolean,FOO)) will assert FOO is 0 or 1
 define assert_boolean
+    $(if $($(1)),,$(error $(1) must not be empty))
     $(if $(filter-out 0 1,$($1)),$(error $1 must be boolean))
 endef