how_to_compile.md

How to compile kernel and modules (for Beaglebone Black)

Doing all the things in the kernel source root path:

1. generate the .config

The original configuration is used as basement to generate our own profile:

cp arch/arm/configs/bb.org_defconfig defconfig_LQ

make menuconfig

load defconfig_LQ do some modification based on your needs then save defconfig_LQ

cp defconfig_LQ arch/arm/configs/beaglebone_defconfig

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- beaglebone_defconfig

2. compile the kernel

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- uImage dtbs

maybe you can add -j4 to make it faster.

3. compile the modules

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules

maybe you can add -j4 to make it faster.

3.1. compile partial modules

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- SUBDIRS=drivers/input/touchscreen modules

4. install modules

sudo make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules_install

sudo make sure you have the writing permission for the default path /lib/modules/KERNEL-NAME

or you can have no sudo and use:

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- INSTALL_MOD_PATH=/path/to/target modules_install

or you can copy to target board directly:

scp -r /lib/modules/3.8.13+ [email protected]:/lib/modules/

if you make something wrong and want to recompile again, please make clean first.

reference1 compile wiki

reference2 compile wiki

reference3, Beaglebone Black NFS root