savedefconfig: Remove BR2_DEFCONFIG from saved defconfig file

BR2_DEFCONFIG should not be present in saved defconfig file.

The use case is:
make qemu_arm_versatile
make savedefconfig BR2_DEFCONFIG=my_custom_defconfig

BR2_DEFCONFIG is set in my_custom_defconfig with an absolute path
to qemu_arm_versatile (value present in .config) and set in
my_custom_defconfig as it is different from default mentioned in
config.in (default is BR2_DEFCONFIG from environment).

On savedefconfig recipe, simply remove BR2_DEFCONFIG from generated file

[Peter: fixup typos and use SED as noted by Arnout]
Signed-off-by: Herve Codina <Herve.CODINA@celad.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

diff --git a/Makefile b/Makefile
index 43b5ba5ca95b26e50cc6749c4bfda19c22421ef4..d3f80c4b3f023d8b59a4a27b51f04a534de6f49a 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -777,6 +777,7 @@ savedefconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
        @$(COMMON_CONFIG_ENV) $< \
                --savedefconfig=$(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig) \
                $(CONFIG_CONFIG_IN)
+       @$(SED) '/BR2_DEFCONFIG=/d' $(if $(DEFCONFIG),$(DEFCONFIG),$(CONFIG_DIR)/defconfig)
 
 .PHONY: defconfig savedefconfig