config(8) System Manager's Manual config(8)
config - Builds system configuration files
/sys/conf/config [-k] [-p] [-q] system_name
Creates a define variable 'KDEBUG' that can be used to conditionally compile source code for kernel debugging. Configure the system for
profiling. You must have sources to use this flag. Concatenates and displays all the system configuration files, including any configura-
tion files described in the /sys/conf/NAME.list file.
The doconfig command calls the config command to build a set of system configuration files from a file that describes the sort of system
that is being configured. The config command also takes as input another file that tells it what files are needed to generate a system.
This other file can be augmented by a configuration-specific set of files that name alternate files for a specific machine.
Normally, you should run the doconfig program and not the config command. If you need to issue the config command, be sure to change your
directory to the /sys/conf directory. As an argument to the config command, specify the name of a system configuration file containing
device specifications, configuration options and other system parameters for that specific system configuration. The config command places
all its output files in the directory
The output of config consists of a number of files; each machine type has its own specific set of files. All machine types have a makefile
which is used by make during the system build. Typically, there are also a set of header files which contain definitions of the number of
various devices that will be compiled into the system, and a set of swap configuration files contain definitions for the disk areas to be
used for swapping, the root file system, argument processing, and system dumps.
After running config, you run make depend in the directory where the new makefile was created.
If any other error messages are produced by config, the problems in the configuration file should be corrected and config should be run
again. Attempts to compile a system that had configuration errors are likely to be unsuccessful.
The line numbers reported in error messages are usually off by one.
List of common files used to build the system List of files specific to NAME, where NAME is the value specified for the ident option in the
system configuration file Machine-independent portion of the makefile template used for building kernels from binaries Machine-independent
portion of the makefile template used for building kernels from sources Machine-dependent portion of the makefile template List of machine-
specific files Machine-specific name to major device mapping file
Commands: make(1), doconfig(8)
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