Analysis on the hello World Driver

OBJ-M + = Hello. o
ALL:
Make-C/opt/embedsky/linux-2.6.30.4 M = $ (PWD) Modules
Clean:
Make-C/opt/embedsky/linux-2.6.30.4 M = $ (PWD) clean

 

 

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The above is the makefile content of the hello World Driver.

1. The two make statements are actually executed in the kernel source code directory.

2. The-C option transfers the current working directory to the location you specified, that is, to enter the source code directory.

3. The "M =" option is used to compile an external module based on a certain kernel.

Add "m = dir" to the Make modules command, and the program will automatically go to the Dir directory you specified to find the module source code.

Compile and generate the Ko file.