README.kconfig: document backward compatibility "make *_config"

Commit 3ff291f371fa9858426774f3732924bacb61ed1c (kconfig: convert Kconfig helper script into a shell script) restored "<board>_config" target for backward compatibility. It should be documented. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Stephen Warren <swarren@nvidia.com>

README.kconfig: document backward compatibility "make *_config"
Commit 3ff291f371fa9858426774f3732924bacb61ed1c (kconfig: convert Kconfig helper script into a shell script) restored "<board>_config" target for backward compatibility. It should be documented. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Stephen Warren <swarren@nvidia.com>
Masahiro Yamada · Tom Rini
1 parent 2134342e57
Showing 2 changed files with 8 additions and 0 deletions Side-by-side Diff
doc/README.kconfig
scripts/multiconfig.sh
@@ -114,6 +114,13 @@
   coalesced together with "<condition:>" prefix for each line as shown above.
   This file can be used as an input of "defconfig" target.
  
+- <board>_config
+
+  This does not exist in Linux's Kconfig.
+  Prior to Kconfig, in U-Boot, "make <board>_config" was used for the
+  configuration.  It is still supported for backward compatibility and
+  its behavior is the same as "make <board>_defconfig".
+
  
 Migration steps to Kconfig
 --------------------------
@@ -248,6 +248,7 @@
 *_defconfig)
 	do_board_defconfig $target;;
 *_config)
+	# backward compatibility
 	do_board_defconfig ${target%_config}_defconfig;;
 silentoldconfig)
 	do_silentoldconfig;;
...	...	@@ -114,6 +114,13 @@
114	114	coalesced together with "<condition:>" prefix for each line as shown above.
115	115	This file can be used as an input of "defconfig" target.
116	116
	117	+- <board>_config
	118	+
	119	+ This does not exist in Linux's Kconfig.
	120	+ Prior to Kconfig, in U-Boot, "make <board>_config" was used for the
	121	+ configuration. It is still supported for backward compatibility and
	122	+ its behavior is the same as "make <board>_defconfig".
	123	+
117	124
118	125	Migration steps to Kconfig
119	126	--------------------------
...	...	@@ -248,6 +248,7 @@
248	248	*_defconfig)
249	249	do_board_defconfig $target;;
250	250	*_config)
	251	+ # backward compatibility
251	252	do_board_defconfig ${target%_config}_defconfig;;
252	253	silentoldconfig)
253	254	do_silentoldconfig;;