How To Fix Kernel Issues When Compiling Buildroot?

Last week, some of our users encountered an error code in buildroot. This problem can occur due to many factors. Let’s get to know them below.

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  • As mentioned earlier, buildroot is essentially a set of makefiles thatDownload, configure and compile the software application with the correct options. includes thisalso patches for various software – mostly thoseParticipates in all cross compilation tool chains (gcc, binutils anduClibc).

    In general, there is one Makefile per software package.with .mk extension. Makefiles are divided into almost all differentparts.

    buildroot build kernel

    The main Makefile makes the following decisions (afterSetup complete):

    Chapter 15. How Buildroot Works

  • toolchain/ directory contains makefiles and related files for almost all software related to Cross compilation toolset: binutils, gcc, gdb, And basic headers uClibc.
  • The arch/ directory contains the main definitions for all processors. Supported architectures from Buildroot.
  • package/ contains the Makefiles directory and Linked files for all userspace tools and libraries that buildroot can be compiled and appended to some target root filesystem. There is no doubt subdirectory for each package.
  • The linux/ site contains makefiles and files that have links to Linux kernel.
  • The boot/ address list contains makefiles and related files for Installed Buildroot bootloaders.
  • The system/ directory supports system integration, i.e. this is usually the target filesystem and the framework of personal preferences of the init system.
  • The site directory fs/ contains makefiles and files related to software related to generation Cheer target filesystem image.
  • something.mk is a makefile that loads, configures, compiles and configures the something package.
  • Config.in is the related part of the toolThis settings. schema file. It describes the parameters associated with Package.
  • Create all directories like: Output staging, target, build, etc in the list of output directories (by default output/, another value must be specified with O=)
  • Create a human toolchain target. If it’s possible to use the internal toolchain, that’s it means building each toolchain to cross-compile. With external The toolchain is used, that is, reading the functionality of the external Toolchain and import it into the root build environment’s mounted environment.
  • Generate all the targets in the TARGETS variable. it variably populated with all of our individual components make files. Generation of the best goals triggers the collection user space packages (libraries, programs), own kernel, bootloader and additionally generation of root cause image, File system, depending on what you see, configuration.
  • In general, these coding style rules apply here in general to help you addyat files for beginners.Create a root or revise the current ones.

    If you are making minor changes to an existing document, the most importantSo, to keep the entire file consistent, you can:

  • or the following, possibly obsolete coding style used in itTo submit
  • or completely redesign it to comply with these rules.
  • BR2_PACKAGE_LIBFOO configuration        boolean "libfoo"        depends on BR2_PACKAGE_LIBBAZ        Select BR2_PACKAGE_LIBBAR       to help           This is an important comment explaining what libfoo is, no doubt. Help text          it would be wise to turn around.          http://foosoftware.org/libfoo/

    The

    Config.in files are complete for the configuration toolUsed in buildroot which is normal kconfig. For moreKconfig language details, tophttp://kernel refer.org/doc/Documentation/kbuild/kconfig-language.txt.

  • The lines bool, On, depends, select and help are indented when it's a tab.
  • The text help itself should be indented by one or two tabs. numbers.
  • The help text must be moved tomatch 72 content elements where tabs are important. for 12, i.e. 62 characters in the text itself.
  • Header: The file starts with the correct header. Contains the name of the segment,preferably lowercase, between the included delimiters of the 80 hashes. AThe really mandatory white line after the title:

    ############################################## # #####################################libfoo############################################### # # # #############################
  • Purpose: = before and after a, and spaces:

    LIBFOO_VERSION=1.0LIBFOO_CONF_OPTS += --no Python support

    buildroot build kernel

    Don't always align characters =.

  • Indentation: only use cost:

    Set LIBFOO_REMOVE_DOC        $(RM) -en $(TARGET_DIR)/usr/share/libfoo/docn                $(TARGET_DIR)/usr/share/man/man3/libfoo*end

    Notice why the commands in the define block always start with a tab whentherefore recognizes them as commands.

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