Makefile: Add a target to create the .cfg files
A common requirement when converting CONFIG options to Kconfig is to check
that the effective configuration has not changed due to the conversion. Add
a target which creates this configuration (in the form of u-boot.cfg) but
does not build U-Boot. This speeds up the checking.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/Makefile b/Makefile
index 96ddc59..153e076 100644
--- a/Makefile
+++ b/Makefile
@@ -821,6 +821,8 @@
quiet_cmd_pad_cat = CAT $@
cmd_pad_cat = $(cmd_objcopy) && $(append) || rm -f $@
+cfg: u-boot.cfg
+
all: $(ALL-y)
ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
@echo "===================== WARNING ======================"
@@ -1527,6 +1529,7 @@
@echo ' cscope - Generate cscope index'
@echo ' ubootrelease - Output the release version string (use with make -s)'
@echo ' ubootversion - Output the version stored in Makefile (use with make -s)'
+ @echo " cfg - Don't build, just create the .cfg files"
@echo ''
@echo 'Static analysers'
@echo ' checkstack - Generate a list of stack hogs'