我正在尝试为 u-boot 设置自定义默认环境，同时使用 Buildroot 构建嵌入式 Linux 系统。我能够在 u-boot 独立中实现这一点，但我无法通过 Buildroot 的 Kconfig 重现相同的效果。
运行uboot-menuconfig失败：
$ make uboot-menuconfig
make: *** No rule to make target 'uboot-menuconfig'. Stop.
并且uboot-menuconfig帮助消息中缺少目标：
$ make help
Cleaning:
clean - delete all files created by build
distclean - delete all non-source files (including .config)
Build:
all - make world
toolchain - build toolchain
sdk - build relocatable SDK
Configuration:
menuconfig - interactive curses-based configurator
nconfig - interactive ncurses-based configurator
xconfig - interactive Qt-based configurator
gconfig - interactive GTK-based configurator
oldconfig - resolve any unresolved symbols in .config
syncconfig - Same as oldconfig, but quietly, additionally update deps
olddefconfig - Same as syncconfig but sets new symbols to their default value
randconfig - New config with random answer to all options
defconfig - New config with default answer to all options;
BR2_DEFCONFIG, if set on the command line, is used as input
savedefconfig - Save current config to BR2_DEFCONFIG (minimal config)
update-defconfig - Same as savedefconfig
allyesconfig - New config where all options are accepted with yes
allnoconfig - New config where all options are answered with no
alldefconfig - New config where all options are set to default
randpackageconfig - New config with random answer to package options
allyespackageconfig - New config where pkg options are accepted with yes
allnopackageconfig - New config where package options are answered with no
Package-specific:
<pkg> - Build and install <pkg> and all its dependencies
<pkg>-source - Only download the source files for <pkg>
<pkg>-extract - Extract <pkg> sources
<pkg>-patch - Apply patches to <pkg>
<pkg>-depends - Build <pkg>'s dependencies
<pkg>-configure - Build <pkg> up to the configure step
<pkg>-build - Build <pkg> up to the build step
<pkg>-show-info - generate info about <pkg>, as a JSON blurb
<pkg>-show-depends - List packages on which <pkg> depends
<pkg>-show-rdepends - List packages which have <pkg> as a dependency
<pkg>-show-recursive-depends
- Recursively list packages on which <pkg> depends
<pkg>-show-recursive-rdepends
- Recursively list packages which have <pkg> as a dependency
<pkg>-graph-depends - Generate a graph of <pkg>'s dependencies
<pkg>-graph-rdepends - Generate a graph of <pkg>'s reverse dependencies
<pkg>-dirclean - Remove <pkg> build directory
<pkg>-reconfigure - Restart the build from the configure step
<pkg>-rebuild - Restart the build from the build step
busybox:
busybox-menuconfig - Run BusyBox menuconfig
uclibc:
uclibc-menuconfig - Run uClibc menuconfig
linux:
linux-menuconfig - Run Linux kernel menuconfig
linux-savedefconfig - Run Linux kernel savedefconfig
linux-update-defconfig - Save the Linux configuration to the path specified
by BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE
Documentation:
manual - build manual in all formats
manual-html - build manual in HTML
manual-split-html - build manual in split HTML
manual-pdf - build manual in PDF
manual-text - build manual in text
manual-epub - build manual in ePub
graph-build - generate graphs of the build times
graph-depends - generate graph of the dependency tree
graph-size - generate stats of the filesystem size
list-defconfigs - list all defconfigs (pre-configured minimal systems)
Miscellaneous:
source - download all sources needed for offline-build
external-deps - list external packages used
legal-info - generate info about license compliance
show-info - generate info about packages, as a JSON blurb
printvars - dump internal variables selected with VARS=...
make V=0|1 - 0 => quiet build (default), 1 => verbose build
make O=dir - Locate all output files in "dir", including .config
For further details, see README, generate the Buildroot manual, or consult
it on-line at http://buildroot.org/docs.html
然而，u-boot 已启用，并且与内核和文件系统一起正确构建。我缺少一个配置选项吗？
答案1
显然有这样的配置选项。我正在使用不包含 Kconfig 配置的旧版构建系统构建 u-boot；因此，menuconfig 不可用。
为了获得uboot-menuconfig可接受的目标，我必须Kconfig在LegacyBootloaders -> U-Boot -> Build System 菜单中进行选择。