你如何以非交互开启功能在Linux内核的config文件？ [英] How do you non-interactively turn on features in a Linux kernel .config file?

问题描述

我在那里我们的软件需要与几个不同的Linux内核发行/内核树工作的情况。 （包括Android叉）

I have a situation where our software needs to work with several different Linux kernel distributions / kernel trees. (including Android forks)

在尝试自动化我们的构建过程中，我发现，一些特定的 defconfig 文件的建立，我们需要支持不包括我们赖以生存的内核模块。

In trying to automate our build process, I am finding that some of the defconfig files for particular builds we need to support do not include the kernel modules we depend on.

例如，假设我需要一个名为 XXX 在我的的.config 选项。对于一些依赖，我可以做这样的事情：

For example, let's imagine I need an option called XXX in my .config. For some dependencies, I can do something like this:

sed -i 's/# CONFIG_XXX is not set/CONFIG_XXX=m/' .config

对于其他人，它不是那么容易，因为依赖可能跨越的.config 语句多行。

有没有更支持的方式做到这一点非交互，还是我卡住写一个更复杂的搜索和替换脚本？

Is there a more supported way to do this non-interactively, or am I stuck writing a more complex search-and-replace script?

推荐答案

是的，有些配置选项更改版本之间的名字，有时是微妙的语义变化的迹象。

Yes, some config options change names between releases, sometimes as an indication of subtle semantic changes.

我已经写蟒类一组配置片段合并为基本内核配置文件。这就是矫枉过正你，虽然;你可以做同样的事情作为一个sed脚本;你不局限于单行。

I have written python classes to merge together a set of configuration fragments into base kernel configuration files. That's overkill for you, though; you can do the same thing as a sed script; you aren't limited to one-liners.

sed -ir 's/^(CONFIG_XXX=.*|# CONFIG_XXX is not set)/CONFIG_XXX=m/;
         s/^(CONFIG_FOO=.*|# CONFIG_FOO is not set)/CONFIG_FOO=m/;
         s/^(CONFIG_BAR=.*|# CONFIG_BAR is not set)/CONFIG_BAR=m/' .config

甚至可以创建一个单独的脚本。说，config.sed包含行：

Or even create a separate script. Say, config.sed that contains the lines:

s/^(CONFIG_XXX=.*|# CONFIG_XXX is not set)/CONFIG_XXX=m/;
s/^(CONFIG_FOO=.*|# CONFIG_FOO is not set)/CONFIG_FOO=m/;
s/^(CONFIG_BAR=.*|# CONFIG_BAR is not set)/CONFIG_BAR=m/;

然后你可以运行

sed -ire config.sed .config

希望帮助！

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