From 143c1430c9ff72351dd1628f1ee740ff931886be Mon Sep 17 00:00:00 2001
From: "Yann E. MORIN\"" <yann.morin.1998@free.fr>
Date: Wed, 15 Aug 2012 22:06:22 +0200
Subject: samples: add rule to dump current .config into a defconfig

... and one to restore it, of course.

Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
---
 kconfig/kconfig.mk | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'kconfig')

diff --git a/kconfig/kconfig.mk b/kconfig/kconfig.mk
index 8748287c..4cacf737 100644
--- a/kconfig/kconfig.mk
+++ b/kconfig/kconfig.mk
@@ -5,7 +5,7 @@
 #-----------------------------------------------------------
 # The configurators rules
 
-configurators = menuconfig nconfig oldconfig
+configurators = menuconfig nconfig oldconfig defconfig olddefconfig
 PHONY += $(configurators)
 
 $(configurators): config_files
@@ -27,6 +27,14 @@ oldconfig: .config
 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"
 	$(SILENT)$(CONF) --silent$@ $(KCONFIG_TOP)
 
+defconfig: .config
+	@$(ECHO) '  GEN   $@'
+	$(SILENT)$(CONF) --savedefconfig=$${CONFIG-defconfig} $(KCONFIG_TOP)
+
+olddefconfig:
+	@$(ECHO) '  CONF  $@'
+	$(SILENT)$(CONF) --defconfig=$${CONFIG-defconfig} $(KCONFIG_TOP)
+
 # Always be silent, the stdout an be >.config
 extractconfig:
 	@$(awk) 'BEGIN { dump=0; }                                                  \
@@ -50,3 +58,6 @@ help-config::
 	@echo  '  oldconfig          - Update current config using a provided .config as base'
 	@echo  '  extractconfig      - Extract to stdout the configuration items from a'
 	@echo  '                       build.log file piped to stdin'
+	@echo  '  defconfig          - Save current config as a mini-defconfig to $${CONFIG}'
+	@echo  '  olddefconfig       - Update config from a mini-defconfig $${CONFIG}'
+	@echo  '                       (default: $${CONFIG}=./defconfig)'
-- 
cgit v1.2.3