depmod 命令

常用示例

说明

depmod generates module dependency files (modules.dep and related files) used by modprobe to load kernel modules and their dependencies automatically. It analyzes all modules in the kernel module directory and determines their interdependencies. The tool scans module files for exported and required symbols, building a dependency tree. This information allows modprobe to load prerequisite modules automatically when a module is requested. depmod is typically run automatically during kernel installation or module updates. The generated files are stored in /lib/modules/<kernel_version>/.

参数

-a, --all

Probe all modules. Enabled by default when no filenames are given.

-A, --quick

Exit silently unless a module is newer than modules.dep.

-b, --basedir _DIR_

Prepend _DIR_ to /lib/modules/<version>; useful for staging roots.

-o, --outdir _DIR_

Write generated files to _DIR_ instead of the module tree.

-e, --errsyms

Report symbols a module requires that are not provided by other modules or the kernel.

-F, --filesyms _System.map_

Use _System.map_ to resolve kernel-provided symbols when using -e.

-E, --symvers _Module.symvers_

With -e, also report symbol version (modversion) mismatches.

-n, --show, --dry-run

Print resulting modules.dep and map files to stdout instead of writing them.

-v, --verbose

Print each symbol dependency and providing module.

-w

Warn about duplicate dependencies, aliases, or symbol versions.

-C, --config _FILE_

Override the default configuration file or directory.

-V, --version

Show version and exit.

-h, --help

Display help information.