crosstool-ng详解

3.1. 关于crosstool-ng本身的一些背景知识和逻辑

正如Linux世界中的常见逻辑，crosstool-ng中，也可以通过help，查看到，其本身具有哪些功能：

CLi@PC-CLI-1 ~/develop/crosstool-ng/crosstool-ng-1.18.0_build
$ ct-ng help
This is crosstool-NG version 1.18.0

Copyright (C) 2008  Yann E. MORIN <[email protected]>
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

See below for a list of available actions, listed by category:

Configuration actions:
  menuconfig         - Update current config using a menu based program
  oldconfig          - Update current config using a provided .config as base
  extractconfig      - Extract to stdout the configuration items from a
                       build.log file piped to stdin
  defconfig          - Save current config as a mini-defconfig to ${CONFIG}
  olddefconfig       - Update config from a mini-defconfig ${CONFIG}
                       (default: ${CONFIG}=./defconfig)
  saveconfig         - Save current config as a preconfigured target
  show-tuple         - Print the tuple of the currently configured toolchain

Preconfigured toolchains (#: force number of // jobs):
  list-samples       - prints the list of all samples (for scripting)
  show-<sample>      - show a brief overview of <sample> (list with list-samples)
  <sample>           - preconfigure crosstool-NG with <sample> (list with list-samples)
  build-all[.#]      - Build *all* samples (list with list-samples) and install in
                       ${CT_PREFIX} (which you must set)

Build actions (#: force number of // jobs):
  build[.#]          - Build the currently configured toolchain
  list-steps         - List all build steps

Clean actions:
  clean              - Remove generated files
  distclean          - Remove generated files, configuration and build directories

Distribution actions:
  wiki-samples       - Print a DokuWiki table of samples
  updatetools        - Update the config tools
  tarball            - Build a tarball of the configured toolchain

Environment variables (see /opt/crosstool-ng/share/doc/crosstool-ng/ct-ng.1.18.0/0 - Table of content.txt):
  STOP=step          - Stop the build just after this step (list with list-steps)
  RESTART=step       - Restart the build just before this step (list with list-steps)
  CT_PREFIX=dir      - install samples in dir (see action "build-all", above).
  V=0|1|2            - 0 => show only human-readable messages (default)
                       1 => show only the commands being executed
                       2 => show both

Use action "menuconfig" to configure your toolchain
Use action "build" to build your toolchain
Use action "version" to see the version
See "man 1 ct-ng" for some help as well

        

正如此，看了help之后，才有后面的，各种功能的用法。比如：

查看当前有哪些（默认的）示例配置，可以用：

ct-ng list-samples

查看单个的某个示例配置的核心参数，用：

ct-ng show-<sample>

直接借用（使用，调用）该默认配置，用：

ct-ng <sample>

等等。

关于其他的更多用法，后续会详细解释的。