I'm working with a Linux driver that is building on v5.7.x kernels but not on the latest v5.8.x releases.
To summarise, most of the driver is pre-built and the kernel interface is built on the target. This involves a make -f Kbuild command.
Having checked all of the relevant kernel interface files for any changes that would affect us, normally the driver would just build as usual on a new kernel. However, this time we get the following error:
make[2]: *** [scripts/Makefile.modpost:111: /path/to/source/Module.symvers] Error 1
make[1]: *** [Makefile:1669: modules] Error 2
make[1]: Leaving directory '/usr/src/kernels/5.8.0-1.el8.elrepo.x86_64'
make: *** [Kbuild:26: default] Error 2
This is from CentOS 8.1, but the same error has been seen on Ubuntu 20.04.
I am no expert on this so interpreting these errors is a bit difficult. I have tried building with the KBUILD_VERBOSE flag and it doesn't really provide any useful information, other than the build succeeding until this point.
On previous kernels the Module.symvers file would be created but empty. On 5.8 this file is not created at all presumably due to this error. As a result, the .ko file is not created.
Finally, if we drop in the source files rather than the pre-built .o files the build does succeed. These .o files are built with a very old version of GCC (4.4.7) but we have also tried building with a much newer version (8.3.1), the same version as the target machine.
I would appreciate suggestions for things to check. Let me know if any other details would help.
Edit:
I ran make on Makefile.modpost manually and got the following output:
sudo make -f ./scripts/Makefile.modpost
WARNING: Symbol version dump "vmlinux.symvers" is missing.
Modules may not have dependencies or modversions.
make -f /scripts/Makefile.modfinal
make[1]: Entering directory '/usr/src/linux-headers-5.8.0-050800-generic'
make[1]: /scripts/Makefile.modfinal: No such file or directory
make[1]: *** No rule to make target '/scripts/Makefile.modfinal'. Stop.
make[1]: Leaving directory '/usr/src/linux-headers-5.8.0-050800-generic'
make: *** [scripts/Makefile.modpost:117: __modpost] Error 2
I am answering my own question in case it helps anyone else with this problem. Although it has never been an issue in the past, we've always had a warning that the corresponding .o.cmd file was not present for our .o_shipped files. This appears to be important in kernel 5.8 onwards and my fix was to add a touch command to the Kbuild file (i.e. "touch .driver.o.cmd"). This does not remove the warning but it allows the driver to build as normal.
Related
I have a problem by compiling a driver (WLAN-dongle Edimax ac600).
I´m using an Archlinux on my raspberry-pi and want to install my dongle for 5Ghz. During comiling the driver I get this message. I tried to install the linux-headers without success. (in other threads it will be a solution)
Here is my output of make:
[root#raspberry_pi_1 rtl8812AU]# make make ARCH=arm CROSS_COMPILE= -C
/lib/modules/4.9.43-1-ARCH/build M=/root/rtl8812AU modules make[1]:
*** /lib/modules/4.9.43-1-ARCH/build: No such file or directory. Stop. make: *** [Makefile:1576: modules] Error 2
I found out that my pi has a two-arch...-directories:
4.9.43-1-ARCH/
4.9.51-1-ARCH/
Only the second one has the build directory...
How can I fix the problem?!
thanks a lot,
a Linux noob...
[Reputation is too low to post comment]
Use uname -r to make sure which version of the kernel you use.
If it's 4.9.43 : you have newer version of the kernel and this confuse your installer. You should reboot on the 51 one
If it's 4.9.51 : You messed up your installation step and are trying to compile for an old target. You should review the compilation process and change every mention of the 4.9.43 to 4.9.51 since it's the version you use.
If you upgrade your kernel, you may have to rebuild the thing again (You may like to have script in the future ;) ) with the new kernel version.
I'm using LinK+ in other to develop a linux kernel module. My development machine has a Linux Mint 18 installed operating system with kernel version 4.4.xx. For testing I want to deploy the kernel module to a Debian machine(in a virtualbox) which has a kernel version 3.16.xx.
LinK+ has an option called "Compile for other kernel" (see image below)
When I press that button a dialog ask me to point to Kernel Source Location. I've downloaded kernel version 3.16.xx from https://www.kernel.org/ and then pointed to extracted files from that archive.
The output of the make command is this:
**** Build of configuration Debug for project VMDD ****
make --makefile=Makefile --directory=KERN_SRC modules
make: Entering directory '/home/george/linkProjects/VMDD/KERN_SRC'
make -C /home/george/kernels/linux-3.16.43/ M=/home/george/linkProjects/VMDD/KERN_SRC modules
make[1]: Entering directory '/home/george/kernels/linux-3.16.43'
WARNING: Symbol version dump ./Module.symvers
is missing; modules will have no dependencies and modversions.
CC [M] /home/george/linkProjects/VMDD/KERN_SRC/VMDD.o
/bin/sh: 1: ./scripts/recordmcount: not found
scripts/Makefile.build:263: recipe for target '/home/george/linkProjects/VMDD/KERN_SRC/VMDD.o' failed
make[2]: *** [/home/george/linkProjects/VMDD/KERN_SRC/VMDD.o] Error 127
Makefile:1337: recipe for target '_module_/home/george/linkProjects/VMDD/KERN_SRC' failed
make[1]: Leaving directory '/home/george/kernels/linux-3.16.43'
make[1]: *** [_module_/home/george/linkProjects/VMDD/KERN_SRC] Error 2
make: *** [modules] Error 2
Makefile:8: recipe for target 'modules' failed
make: Leaving directory '/home/george/linkProjects/VMDD/KERN_SRC'
What did I do wrong ?
I've downloaded kernel version 3.16.xx from https://www.kernel.org/ and then pointed to extracted files from that archive.
You can't compile modules for some kernel if you have only its original source. You need point IDE to configured and partially build kernel. Actually, all files needed to build modules for some kernel version are in kbuild directory of compiled kernel, installed into /lib/modules/version/kbuild. There are linux-kbuild-version (https://packages.debian.org/jessie/kernel/linux-kbuild-3.16) package with some files https://packages.debian.org/jessie/amd64/linux-kbuild-3.16/filelist and linux-headers-version (https://packages.debian.org/jessie/linux-headers-3.16.0-4-amd64) which includes Module.symvers (https://packages.debian.org/jessie/amd64/linux-headers-3.16.0-4-amd64/filelist):
/usr/src/linux-headers-3.16.0-4-amd64/Module.symvers
I am encountering a problem while trying to setup a cross-compiler for an old linux kernel.
cp -dpRf package/config/buildroot-config /tmp/buildroot/buildroot-2009.02/project_build_mips/uclibc/buildroot-config
(cd /tmp/buildroot/buildroot-2009.02/toolchain_build_mips/linux-2.6.15; \
/usr/bin/make -j1 ARCH=mips \
HOSTCC="/usr/bin/gcc" HOSTCFLAGS="" \
HOSTCXX="/usr/bin/g++" \
INSTALL_HDR_PATH=/tmp/buildroot/buildroot-2009.02/toolchain_build_mips/linux headers_install; \
)
make[1]: Entering directory `/tmp/buildroot/buildroot-2009.02/toolchain_build_mips/linux-2.6.15'
Makefile:486: .config: No such file or directory
make[1]: *** No rule to make target `headers_install'. Stop.
make[1]: Leaving directory `/tmp/buildroot/buildroot-2009.02/toolchain_build_mips/linux-2.6.15'
make: *** [/tmp/buildroot/buildroot-2009.02/toolchain_build_mips/linux/.configured] Error 2
notice the make[1]: *** No rule to make target 'headers_install'. Stop. line.
I made a search on stackoverflow and came across this thread:
Setup buildroot for old kernels.
The guy faced the same problem as me.
The answer, suggested using an old version of buildroot. Therefore I used buildroot-2009.02 which is the oldest version of buildroot, but still got the same result.
Please don't advise me to upgrade my kernel to a newer version, I must use particularly this version.
I would love to get explanation about what it says and maybe someone could help me fix it.
Thanks in advance.
The error you show doesn't seem to be related to building the kernel, but rather it seems to be during the toolchain (= cross-compiler) build. The toolchain needs to install the kernel headers, which are used by the C library to create system calls. To do this, buildroot uses the 'headers_install' target of the kernel.
Unfortunately, this target was only introduced in Linux 2.6.18. So with your kernel version, you cannot use buildroot to build the cross compiler.
I also don't know how you're supposed to do build a cross-compiler for such an old kernel. You can try to use the original 'crosstool' project (not crosstool-NG, that is also too modern).
After configuring various options inside .conf using
$make config
I try to compile the entire linux kernel using
$make
However it throws an error as below:
root#localbox:/LinuxKernel/linux-3.13# make
scripts/kconfig/conf --silentoldconfig Kconfig
***
*** Configuration file ".config" not found!
***
*** Please run some configurator (e.g. "make oldconfig" or
*** "make menuconfig" or "make xconfig").
***
make[2]: *** [silentoldconfig] Error 1
make[1]: *** [silentoldconfig] Error 2
make[1]: Nothing to be done for `all'.
make[1]: Nothing to be done for `relocs'.
make: *** No rule to make target `include/config/auto.conf', needed by `include/config/kernel.release'. Stop.
root#localbox:/LinuxKernel/linux-3.13#
I tried to search for .conf by using:
$find -name ".conf"
However it turns up no results. But since make config worked I assume .config must exist somewhere.
Please advise me on how to overcome this annoying problem. I am doing this for the first time and I am not sure if there are any dependencies that have to be installed before trying to compile the kernel. Your feedbacks are highly appreciated.
There must have been some error with make config, e.g. disk full or you aborted it with Ctrl-C. The .config file (not .conf) is right in the main directory.
The error message says it already
*** Please run some configurator (e.g. "make oldconfig" or
*** "make menuconfig" or "make xconfig").
There are several textbased (config, oldconfig, menuconfig) and graphical (xconfig, gconfig) configuration programs. You might want to pick a graphical one and run it, e.g.
make gconfig
These graphical configurators also help to avoid all the hundreds of irrelevant questions. When you're done selecting the needed options, don't forget to save the .config file and try again compiling the kernel and modules.
I am completely new to this. I have a C program which compiles fine and runs fine on linux. I want to run the same code on a Windows machine so I am using the cross compiler Mingw. However every time i try and build the project i get this error:
14:51:21 **** Incremental Build of configuration Default for project zbar-0.10 ****
make all
make all-am
make[1]: Entering directory `D:/zbar-0.10'
! was unexpected at this time.
make[1]: *** [include/config.h] Error 255
make[1]: Leaving directory `D:/zbar-0.10'
make: *** [all] Error 2
14:51:26 Build Finished (took 4s.493ms)
I have googled around and still do not understand why i am getting it. Any advice?
Build with exact versions of tools as specified in: http://sourceforge.net/apps/mediawiki/zbar/index.php?title=HOWTO:_Compile_with_MinGW_in_Windows
The code is old and the make will break with newer versions.