KConfig is a selection-based configuration system originally developed for the Linux kernel. It is commonly used to select build-time options and to enable or disable features, and has now found use in other projects beyond the Linux kernel.
What are Kconfig files?
KConfig is a selection-based configuration system originally developed for the Linux kernel. … In this interface, the user selects the options and features desired, and saves a configuration file, which is then used as an input to the build process.
How do I create a Kconfig file?
First create a “Kconfig” file in the same directory and edit the file as follows: ex: menu “Networking” config NET tristate “my network driver” # –> this line gives the desc of the ko. depends on <ARCH> default y if <ARCH> help <Text displayed when help is selected for your driver>.
What is select in Kconfig?
select should be used with care. select will force a symbol to a value without visiting the dependencies. By abusing select you are able to select a symbol FOO even if FOO depends on BAR that is not set. In general use select only for non-visible symbols (no prompts anywhere) and for symbols with no dependencies.
What build system does Linux use?
A Misconception about Linux
An OS is much more than that, it includes software libraries, runtimes, and usually a default set of executables. Most Linux distributions use GNU as the operating system (including TOS). GNU is the child of Richard Stallman and was designed to be Free (As in Freedom) and Open Source.
Where is .config file in Linux?
7 Answers
- Generally system/global config is stored somewhere under /etc.
- User-specific config is stored in the user’s home directory, often as a hidden file, sometimes as a hidden directory containing non-hidden files (and possibly more subdirectories).
What is Defconfig in Linux?
The platform’s defconfig contains all of the Linux kconfig settings required to properly configure the kernel build (features, default system parameters, etc) for that platform. Defconfig files are typically stored in the kernel tree at arch/*/configs/ .
Where is .config file in Linux kernel?
The Linux kernel configuration is usually found in the kernel source in the file: /usr/src/linux/. config . It is not recommended to edit this file directly but to use one of these configuration options: make config – starts a character based questions and answer session.
How do I configure my kernel?
To configure the kernel, change to /usr/src/linux and enter the command make config. Choose the features you want supported by the kernel. Usually, There are two or three options: y, n, or m. m means that this device will not be compiled directly into the kernel, but loaded as a module.
What is Android kernel?
What Is a Kernel? A kernel in an operating system—in this case Android—is the component responsible for helping your applications communicate with your hardware. It manages the system resources, communicates with external devices when needed, and so on. Android uses a variation of the Linux kernel.
How will get the driver added into the kernel what are Kconfig files?
3 Answers
- Create a directory like my_drvr inside drivers(which is in the Linux source code) for your driver and put your driver (my_driver.c) file inside this directory. …
- Create one Makefile inside your driver directory (using vi any editor) and inside this put obj-$(CONFIG_MY_DRIVER) += my_driver.o and save this file.
What is the difference between Insmod and Modprobe?
modprobe is the intelligent version of insmod . insmod simply adds a module where modprobe looks for any dependency (if that particular module is dependent on any other module) and loads them.
How do I install Kconfig frontends?
Install Kconfig frontends
- First, make sure you have gperf installed: …
- Then download the source code by cloning the NuttX Tools repository from BitBucket: …
- Change the working directory to the kconfig-frontends folder: …
- Configure the build to include (at least) the menuconfig and qconfig tools.