config: make it possible to specify which config file to use for 'make defconfig'

PATCH Superseded Arnout Vandecappelle (Essensium/Mind) 2 participants 2 messages Mar 11, 2012 – Mar 12, 2012 Kbuild

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Arnout Vandecappelle (Essensium/Mind)

author

2012-03-11 11:14 UTC #0 lore raw

PATCH v2 1/1 config: make it possible to specify which config file to use for 'make defconfig'

So that this works:

% make defconfig BR2_DEFCONFIG=~/buildroot-defconfig

Right now we have to do:

% cp ~/buildroot-defconfig configs/buildroot_defconfig % make buildroot_defconfig

That would dirty the buildroot tree and requires it to be writable.

Signed-off-by Felipe Contreras <[email protected]>

Signed-off-by Arnout Vandecappelle (Essensium/Mind) <[email protected]>

Acked-by Luca Ceresoli <[email protected]>

---
v2:
* Use $(if...) instead of $(patsubst...)
* Add help text
* Fix commit message

 Makefile |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

Makefile +2 -1

index d508888..4637d7e 100644
@@ -602,7 +602,7 @@ silentoldconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 
 defconfig: $(BUILD_DIR)/buildroot-config/conf outputmakefile
 	@mkdir -p $(BUILD_DIR)/buildroot-config
-	@$(COMMON_CONFIG_ENV) $< --defconfig $(CONFIG_CONFIG_IN)
+	@$(COMMON_CONFIG_ENV) $< --defconfig$(if $(BR2_DEFCONFIG),=$(BR2_DEFCONFIG)) $(CONFIG_CONFIG_IN)
 
 %_defconfig: $(BUILD_DIR)/buildroot-config/conf $(TOPDIR)/configs/%_defconfig outputmakefile
 	@mkdir -p $(BUILD_DIR)/buildroot-config

@@ -663,6 +663,7 @@ help:
 	@echo '  oldconfig              - resolve any unresolved symbols in .config'
 	@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'
 	@echo '  savedefconfig          - Save current config as ./defconfig (minimal config)'
 	@echo '  allyesconfig           - New config where all options are accepted with yes'
 	@echo '  allnoconfig            - New config where all options are answered with no'

Signature · 1 line

tg: (dca6e03..) t/defconfig (depends on: master)

Thomas Petazzoni

2012-03-12 22:04 UTC #1 lore raw

PATCH v2 1/1 config: make it possible to specify which config file to use for 'make defconfig'

Le Sun, 11 Mar 2012 12:14:42 +0100,
"Arnout Vandecappelle (Essensium/Mind)" <[email protected]> a ?crit :

Quoted 6 lines

So that this works:
% make defconfig BR2_DEFCONFIG=~/buildroot-defconfig
Right now we have to do:

Quoted 8 lines

% cp ~/buildroot-defconfig configs/buildroot_defconfig % make buildroot_defconfig
That would dirty the buildroot tree and requires it to be writable.
Signed-off-by Felipe Contreras <[email protected]>
Signed-off-by Arnout Vandecappelle (Essensium/Mind) <[email protected]>
Acked-by Luca Ceresoli <[email protected]>

Acked-by Thomas Petazzoni <[email protected]>

Signature · 4 lines

Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com