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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2013-04-04 11:24:25 (GMT)
committer Peter Korsgaard <jacmet@sunsite.dk>2013-04-11 07:58:12 (GMT)
commit9db3b47ea1b37b1ac52561f94ca39fa9cf4ae74c (patch)
tree6fde94467fce8f2b24e72189b0c9fdb25af2b14a
parent6997e461fdb39985957d24d81e612113cf39e35c (diff)
downloadbuildroot-9db3b47ea1b37b1ac52561f94ca39fa9cf4ae74c.tar.gz
buildroot-9db3b47ea1b37b1ac52561f94ca39fa9cf4ae74c.tar.bz2
support/kconfig: add support for olddefconfig
olddefconfig is a new target available in kconfig that allows to take an old .config file, and update it to the latest version of the code, without being asked for questions: it automatically assumes the default value for options whose value was not defined. It for example allows to take a minimal defconfig, copy it as .config, and do 'make olddefconfig' to get the full .config. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Gustavo Zacarias <gustavo@zacarias.com.ar> Tested-by: Gustavo Zacarias <gustavo@zacarias.com.ar> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
-rw-r--r--Makefile8
1 files changed, 7 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index c95bb1e..0a91658 100644
--- a/Makefile
+++ b/Makefile
@@ -58,7 +58,7 @@ export BR2_VERSION_FULL:=$(BR2_VERSION)$(shell $(TOPDIR)/support/scripts/setloca
noconfig_targets:=menuconfig nconfig gconfig xconfig config oldconfig randconfig \
%_defconfig allyesconfig allnoconfig silentoldconfig release \
randpackageconfig allyespackageconfig allnopackageconfig \
- source-check print-version
+ source-check print-version olddefconfig
# Strip quotes and then whitespaces
qstrip=$(strip $(subst ",,$(1)))
@@ -693,6 +693,10 @@ silentoldconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
@mkdir -p $(BUILD_DIR)/buildroot-config
$(COMMON_CONFIG_ENV) $< --silentoldconfig $(CONFIG_CONFIG_IN)
+olddefconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
+ @mkdir -p $(BUILD_DIR)/buildroot-config
+ $(COMMON_CONFIG_ENV) $< --olddefconfig $(CONFIG_CONFIG_IN)
+
defconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
@mkdir -p $(BUILD_DIR)/buildroot-config
@$(COMMON_CONFIG_ENV) $< --defconfig$(if $(DEFCONFIG),=$(DEFCONFIG)) $(CONFIG_CONFIG_IN)
@@ -758,6 +762,8 @@ help:
@echo ' xconfig - interactive Qt-based configurator'
@echo ' gconfig - interactive GTK-based configurator'
@echo ' oldconfig - resolve any unresolved symbols in .config'
+ @echo ' silentoldconfig - Same as oldconfig, but quietly, additionally update deps'
+ @echo ' olddefconfig - Same as silentoldconfig but sets new symbols to their default value'
@echo ' randconfig - New config with random answer to all options'
@echo ' defconfig - New config with default answer to all options'
@echo ' BR2_DEFCONFIG, if set, is used as input'