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Nan Xiao
Nan Xiao

Reputation: 17477

Is it meaningful to execute "make modules_install" without executing "make modules"?

From KernelBuild tutorial from http://kernelnewbies.org, I don't see "make modules" command. This article only executes "make" command before "sudo make modules_install install".

But from make help output: 

  all             - Build all targets marked with [*]
* vmlinux         - Build the bare kernel
* modules         - Build all modules
  modules_install - Install all modules to INSTALL_MOD_PATH (default: /)

It seems that without "make modules" command, there is no need to execute "make modules_install" command. Is it meaningful to execute "make modules_install" without executing "make modules"?

Upvotes: 5

Views: 10514

Answers (2)

0xAX
0xAX

Reputation: 21837

Is it meaningful to execute “make modules_install” without executing “make modules”?

Yes, but only if you have already executed make before the make modules_install. You can't execute modules_install if modules weren't built with the make modules or just make. There is only one difference between make and make modules: the make modules compiles only modules or source code which is set as 

obj-CONFIG_OPTION_NAME=m

in the Makefile. If you want just to build Linux kernel, just use make, the make modules already included there.

Upvotes: 5

Juned
Juned

Reputation: 6326

No, if you understand the procedure correctly.

make modules
This will just compile all modules just like any other program. Creating object files.

make modules_install
Once your files are compiled without any error then this command will put generated .so files to the appropriate directories.

So if you run modules_install without make modules then there will be nothing to copy.

I hope this helps.

Upvotes: 1

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