kernel build dierectory not found

English Programming/Scripting
1

Hello all,
This is my first question although i have been using Opensuse for a while now. I am trying to understand how to build a kernel module and i am following video tutorial for the same.
in the video this guy uses Ubuntu …and to build the module he says make -C /lib/modules/$(uname -r)/build M=$PWD modules ] but when i try the same it says build directory not found . i have been breaking my head since .
this is what it says
make: *** /lib/modules/4.12.14-lp151.28.48-default/build: No such file or directory. Stop.

i would like to know where to find the a kernel build files …if a different path or so.
or if i am to download it from somewhere and how to configure the same as to build the module.

thanks.

2

Please post the complete!!! input line, the compete output and the complete next line.
Example (shows the Graphics Hardware and used and avaible driver):

ich@linux64:~> /sbin/lspci -nnk | grep -EiA3 'vga|3d|display'
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] [10de:1c03] (rev a1)
        Subsystem: NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] [10de:1c03]
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia
ich@linux64:~>

Complete input line:

ich@linux64:~> /sbin/lspci -nnk | grep -EiA3 'vga|3d|display'

Output:

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] [10de:1c03] (rev a1)
        Subsystem: NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] [10de:1c03]
        Kernel driver in use: nvidia
        Kernel modules: nouveau, nvidia_drm, nvidia

Next line:

ich@linux64:~>

And please use Code-Tags.

3

To build external modules on openSUSE you need to install kernel-default-devel package.

Please use tags [noparse]

[/noparse] when ptoviding computer output.
4

SORRY! my bad …

ill uses the code tags hence forth.

so i wrote a simple char device driver (incomplete) and i tried to compile the code using

input :


h@linux-fn75:~/Documents/device-driver-tut/trial-1> make -C /lib/modules/$(uname -r)/build M=$PWD modules

and this was the response

output:


make: *** /usr/src/4.12.14-lp151.28.48-default/build: No such file or directory. 
 Stop.

when i checked the directories i couldn’t find the build folder , but here is what i found in that path .


h@linux-fn75:/lib/modules/4.12.14-lp151.28.48-default> ls
kernel             modules.builtin.bin  modules.fips     modules.symbols.bin
modules.alias      modules.dep          modules.order    vdso
modules.alias.bin  modules.dep.bin      modules.softdep
modules.builtin    modules.devname      modules.symbols

i did install kernel-default-devel packages

input code:


h@linux-fn75:~/Documents/device-driver-tut/trial-1> sudo zypper in kernel-default-devel

output:

[sudo] password for root: Loading repository data...
Reading installed packages...
Resolving package dependencies...


The following 4 NEW packages are going to be installed:
  kernel-default-devel kernel-devel kernel-macros libelf-devel


4 new packages to install.
Overall download size: 33.4 MiB. Already cached: 0 B. After the operation,
additional 63.8 MiB will be used.
Continue? [y/n/...? shows all options] (y): y
Retrieving package kernel-macros-4.12.14-lp151.28.52.1.noarch
                                           (1/4),   6.0 MiB ( 21.0 KiB unpacked)
Retrieving: kernel-macros-4.12.14-lp151.28.52.1.noarch.rpm .[done (755.2 KiB/s)]
Retrieving package libelf-devel-0.168-lp151.4.3.1.x86_64
                                           (2/4), 727.0 KiB (  2.1 MiB unpacked)
Retrieving: libelf-devel-0.168-lp151.4.3.1.x86_64.rpm ......[done (241.5 KiB/s)]
Retrieving package kernel-devel-4.12.14-lp151.28.52.1.noarch
                                           (3/4),  17.8 MiB ( 57.4 MiB unpacked)
Retrieving: kernel-devel-4.12.14-lp151.28.52.1.noarch.rpm ..[done (841.0 KiB/s)]
Retrieving package kernel-default-devel-4.12.14-lp151.28.52.1.x86_64
                                           (4/4),   8.9 MiB (  4.3 MiB unpacked)
Retrieving: kernel-default-devel-4.12.14-lp151.28.52.1.x86_[done (1016.3 KiB/s)]
Checking for file conflicts: .............................................[done]
Warning: Checking for file conflicts requires not installed packages to be downloaded in advance in order to access their file lists. See option '--download-in-advance' in the zypper manual page for details.


The following package had to be excluded from file conflicts check because it is not yet downloaded:
  kernel-default


(1/4) Installing: kernel-macros-4.12.14-lp151.28.52.1.noarch .............[done]
(2/4) Installing: libelf-devel-0.168-lp151.4.3.1.x86_64 ..................[done]
(3/4) Installing: kernel-devel-4.12.14-lp151.28.52.1.noarch ..............[done]
(4/4) Installing: kernel-default-devel-4.12.14-lp151.28.52.1.x86_64 ......[done]

i am following this tutorial where he says in the following path << /lib/modules/$(uname -r)/build >> has a makefile which apparently has all the information about the processor and which compiler to use etc. . but ofcourse he uses Ubuntu . any comment on that also helps :slight_smile:

i found another similar thread

https://forums.opensuse.org/showthread.php/524518-Kernel-Headers-for-Opensuse-42-2-Linux-kernel-4-4-57-18-3-1

but again it says to install kernel-default-devel which i did.

P.S - Thank you for the quick response .

5

kernel-default-devel must be the same version as kernel-devel. By default the latest version is installed. Either build your module for current kernel or install kernel-default-devel version 4.12.14-lp151.28.48. By default the latest version is installed.

6

Update your System and reboot.

7

Thank you so much …:slight_smile:
it worked …