Compiling Out of Tree kernel module

lyf sci

Genius 3720 points

Hi Experts,

If in built modules are compiled using the command "make modules"

How to compile a out of tree kernel module for AM335x EVMSK using Linux SDK 7.0 ?

COnsider a sample file sample.c compiling to sample.ko

0 Titusrathinaraj Stalin over 10 years ago

Hi Lyf,

You can compile the kernel module which is not exist in linux tree but you have to mention the linux tree location in Makefile.

1) Create new folder called "module" or any name.

2) Create new Makefile there and mention the linux source location with dirver name (sample.c)

3) Put entry for compile and clean with dependency & flags if any.

Log:

titus@Titus:~/Desktop/Modules$ ls

gpio_ctrl_app.c l3ram_test.c lpsc_control_latest.c panic.c sram_test.mod.o sysfs_sram.mod.c

titus@Titus:~/Desktop/Modules$ cat Makefile

obj-m += l3ram_test.o

all:

make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- -C /opt/ti/mcsdk_1_01_00_02/board-support/linux-3.3-psp03.22.00.06.sdk M=`pwd` modules

clean:

make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- -C /opt/ti/mcsdk_1_01_00_02/board-support/linux-3.3-psp03.22.00.06.sdk M=`pwd` clean

titus@Titus:~/Desktop/Modules$

titus@Titus:~/Desktop/Modules$ make all

make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- -C /opt/ti/mcsdk_1_01_00_02/board-support/linux-3.3-psp03.22.00.06.sdk M=`pwd` modules

make[1]: Entering directory `/opt/ti/mcsdk_1_01_00_02/board-support/linux-3.3-psp03.22.00.06.sdk'

CC [M] /home/titus/Desktop/Modules/l3ram_test.o

Building modules, stage 2.

MODPOST 1 modules

LD [M] /home/titus/Desktop/Modules/l3ram_test.ko

make[1]: Leaving directory `/opt/ti/mcsdk_1_01_00_02/board-support/linux-3.3-psp03.22.00.06.sdk'

titus@Titus:~/Desktop/Modules$

Processors forum