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$ cp arch/arm/configs/mini2440_defconfig .config
$ make menuconfig
scripts/kconfig/mconf arch/arm/Kconfig
#
# configuration written to .config
#
*** End of Linux kernel configuration.
*** Execute 'make' to build the kernel or try 'make help'.
$ cp .config .config_bak
$ make mini2440_defconfig
#
# configuration written to .config
#
$ diff .config .config_bak
4c4
< # Thu Sep 25 15:23:14 2014
---
> # Thu Sep 25 15:22:54 2014
$
make xxx_defconfig生成的.config可以直接make zImage,相当于copy mini2440_defconfig .config再执行make menuconfig的效果。$ make mini2440_defconfig -n
make -f scripts/Makefile.build obj=scripts/basic
:
rm -f .tmp_quiet_recordmcount
mkdir -p include/linux include/config
make -f scripts/Makefile.build obj=scripts/kconfig mini2440_defconfig
set -e; echo ' HOSTLD scripts/kconfig/conf'; gcc -o scripts/kconfig/conf scripts/kconfig/conf.o scripts/kconfig/zconf.tab.o ; echo 'cmd_scripts/kconfig/conf := gcc -o scripts/kconfig/conf scripts/kconfig/conf.o scripts/kconfig/zconf.tab.o ' > scripts/kconfig/.conf.cmd
scripts/kconfig/conf --defconfig=arch/arm/configs/mini2440_defconfig Kconfig
$
有点纠结了。使用这种方法还是copy的,以存在就是合理来讲make xxx_defconfig一样是一定的原因的。