[PATCH 1/2] Makefile: Create a file to indicate the config

[Simon Glass]

At present it is not actually possible to discover the defconfig file that
was used to build U-Boot, so far as I can tell. Write this out to a file
in the build directory, so this is visible.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 scripts/kconfig/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index d52128425ce..bfb92a50bf9 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -92,8 +92,10 @@ else
 endif
 endif
 
+# Write out the defconfig name to a file so we know which board was configured
 %_defconfig: $(obj)/conf
 	$(Q)$< $(silent) --defconfig=arch/$(SRCARCH)/configs/$@ $(Kconfig)
+	$(Q)echo $(subst _defconfig,,$@) > .defconfig_name
 
 # Added for U-Boot (backward compatibility)
 %_config: %_defconfig
-- 
2.32.0.605.g8dce9f2422-goog