| .. SPDX-License-Identifier: GPL-2.0+ |
| |
| Buildman build tool |
| =================== |
| |
| Quick-start |
| ----------- |
| |
| If you just want to quickly set up buildman so you can build something (for |
| example Raspberry Pi 2): |
| |
| .. code-block:: bash |
| |
| cd /path/to/u-boot |
| PATH=$PATH:`pwd`/tools/buildman |
| buildman --fetch-arch arm |
| buildman -k rpi_2 |
| ls ../current/rpi_2 |
| # u-boot.bin is the output image |
| |
| |
| What is this? |
| ------------- |
| |
| This tool handles building U-Boot to check that you have not broken it |
| with your patch series. It can build each individual commit and report |
| which boards fail on which commits, and which errors come up. It aims |
| to make full use of multi-processor machines. |
| |
| A key feature of buildman is its output summary, which allows warnings, |
| errors or image size increases in a particular commit or board to be |
| quickly identified and the offending commit pinpointed. This can be a big |
| help for anyone working with >10 patches at a time. |
| |
| |
| Caveats |
| ------- |
| |
| Buildman can be stopped and restarted, in which case it will continue |
| where it left off. This should happen cleanly and without side-effects. |
| If not, it is a bug, for which a patch would be welcome. |
| |
| Buildman gets so tied up in its work that it can ignore the outside world. |
| You may need to press Ctrl-C several times to quit it. Also it will print |
| out various exceptions when stopped. You may have to kill it since the |
| Ctrl-C handling is somewhat broken. |
| |
| |
| Theory of Operation |
| ------------------- |
| |
| (please read this section in full twice or you will be perpetually confused) |
| |
| Buildman is a builder. It is not make, although it runs make. It does not |
| produce any useful output on the terminal while building, except for |
| progress information (but see -v below). All the output (errors, warnings and |
| binaries if you ask for them) is stored in output directories, which you can |
| look at from a separate 'buildman -s' instance while the build is progressing, |
| or when it is finished. |
| |
| Buildman is designed to build entire git branches, i.e. muliple commits. It |
| can be run repeatedly on the same branch after making changes to commits on |
| that branch. In this case it will automatically rebuild commits which have |
| changed (and remove its old results for that commit). It is possible to build |
| a branch for one board, then later build it for another board. This adds to |
| the output, so now you have results for two boards. If you want buildman to |
| re-build a commit it has already built (e.g. because of a toolchain update), |
| use the -f flag. |
| |
| Buildman produces a concise summary of which boards succeeded and failed. |
| It shows which commit introduced which board failure using a simple |
| red/green colour coding (with yellow/cyan for warnings). Full error |
| information can be requested, in which case it is de-duped and displayed |
| against the commit that introduced the error. An example workflow is below. |
| |
| Buildman stores image size information and can report changes in image size |
| from commit to commit. An example of this is below. |
| |
| Buildman starts multiple threads, and each thread builds for one board at |
| a time. A thread starts at the first commit, configures the source for your |
| board and builds it. Then it checks out the next commit and does an |
| incremental build (i.e. not using 'make xxx_defconfig' unless you use -C). |
| Eventually the thread reaches the last commit and stops. If a commit causes |
| an error or warning, buildman will try it again after reconfiguring (but see |
| -Q). Thus some commits may be built twice, with the first result silently |
| discarded. Lots of errors and warnings will causes lots of reconfigures and your |
| build will be very slow. This is because a file that produces just a warning |
| would not normally be rebuilt in an incremental build. Once a thread finishes |
| building all the commits for a board, it starts on the commits for another |
| board. |
| |
| Buildman works in an entirely separate place from your U-Boot repository. |
| It creates a separate working directory for each thread, and puts the |
| output files in the working directory, organised by commit name and board |
| name, in a two-level hierarchy (but see -P). |
| |
| Buildman is invoked in your U-Boot directory, the one with the .git |
| directory. It clones this repository into a copy for each thread, and the |
| threads do not affect the state of your git repository. Any checkouts done |
| by the thread affect only the working directory for that thread. |
| |
| Buildman automatically selects the correct tool chain for each board. You |
| must supply suitable tool chains (see --fetch-arch), but buildman takes care |
| of selecting the right one. |
| |
| Buildman generally builds a branch (with the -b flag), and in this case |
| builds the upstream commit as well, for comparison. So even if you have one |
| commit in your branch, two commits will be built. Put all your commits in a |
| branch, set the branch's upstream to a valid value, and all will be well. |
| Otherwise buildman will perform random actions. Use -n to check what the |
| random actions might be. |
| |
| Buildman effectively has two modes: without -s it builds, with -s it |
| summarises the results of previous (or active) builds. |
| |
| If you just want to build the current source tree, leave off the -b flag. |
| This will display results and errors as they happen. You can still look at |
| them later using -se. Note that buildman will assume that the source has |
| changed, and will build all specified boards in this case. |
| |
| Buildman is optimised for building many commits at once, for many boards. |
| On multi-core machines, Buildman is fast because it uses most of the |
| available CPU power. When it gets to the end, or if you are building just |
| a few commits or boards, it will be pretty slow. As a tip, if you don't |
| plan to use your machine for anything else, you can use -T to increase the |
| number of threads beyond the default. |
| |
| |
| Selecting which boards to build |
| ------------------------------- |
| |
| Buildman lets you build all boards, or a subset. Specify the subset by passing |
| command-line arguments that list the desired build target, architecture, |
| CPU, board name, vendor, SoC or options. Multiple arguments are allowed. Each |
| argument will be interpreted as a regular expression, so behaviour is a superset |
| of exact or substring matching. Examples are: |
| |
| - 'tegra20' - all boards with a Tegra20 SoC |
| - 'tegra' - all boards with any Tegra Soc (Tegra20, Tegra30, Tegra114...) |
| - '^tegra[23]0$' - all boards with either Tegra20 or Tegra30 SoC |
| - 'powerpc' - all PowerPC boards |
| |
| While the default is to OR the terms together, you can also make use of |
| the '&' operator to limit the selection: |
| |
| - 'freescale & arm sandbox' - all Freescale boards with ARM architecture, plus |
| sandbox |
| |
| You can also use -x to specifically exclude some boards. For example: |
| |
| buildman arm -x nvidia,freescale,.*ball$ |
| |
| means to build all arm boards except nvidia, freescale and anything ending |
| with 'ball'. |
| |
| For building specific boards you can use the --boards (or --bo) option, which |
| takes a comma-separated list of board target names and be used multiple times |
| on the command line: |
| |
| .. code-block:: bash |
| |
| buildman --boards sandbox,snow --boards firefly-rk3399 |
| |
| It is convenient to use the -n option to see what will be built based on |
| the subset given. Use -v as well to get an actual list of boards. |
| |
| Buildman does not store intermediate object files. It optionally copies |
| the binary output into a directory when a build is successful (-k). Size |
| information is always recorded. It needs a fair bit of disk space to work, |
| typically 250MB per thread. |
| |
| |
| Setting up |
| ---------- |
| |
| #. Get the U-Boot source. You probably already have it, but if not these |
| steps should get you started with a repo and some commits for testing. |
| |
| .. code-block:: bash |
| |
| cd /path/to/u-boot |
| git clone git://git.denx.de/u-boot.git . |
| git checkout -b my-branch origin/master |
| # Add some commits to the branch, reading for testing |
| |
| #. Create ~/.buildman to tell buildman where to find tool chains (see |
| buildman_settings_ for details). As an example:: |
| |
| # Buildman settings file |
| |
| [toolchain] |
| root: / |
| rest: /toolchains/* |
| eldk: /opt/eldk-4.2 |
| arm: /opt/linaro/gcc-linaro-arm-linux-gnueabihf-4.8-2013.08_linux |
| aarch64: /opt/linaro/gcc-linaro-aarch64-none-elf-4.8-2013.10_linux |
| |
| [toolchain-prefix] |
| arc = /opt/arc/arc_gnu_2021.03_prebuilt_elf32_le_linux_install/bin/arc-elf32- |
| |
| [toolchain-alias] |
| riscv = riscv32 |
| sh = sh4 |
| x86: i386 |
| |
| |
| This selects the available toolchain paths. Add the base directory for |
| each of your toolchains here. Buildman will search inside these directories |
| and also in any '/usr' and '/usr/bin' subdirectories. |
| |
| Make sure the tags (here root: rest: and eldk:) are unique. |
| |
| The toolchain-alias section indicates that the i386 toolchain should be used |
| to build x86 commits. |
| |
| Note that you can also specific exactly toolchain prefixes if you like:: |
| |
| [toolchain-prefix] |
| arm: /opt/arm-eabi-4.6/bin/arm-eabi- |
| |
| or even:: |
| |
| [toolchain-prefix] |
| arm: /opt/arm-eabi-4.6/bin/arm-eabi-gcc |
| |
| This tells buildman that you want to use this exact toolchain for the arm |
| architecture. This will override any toolchains found by searching using the |
| [toolchain] settings. |
| |
| Since the toolchain prefix is an explicit request, buildman will report an |
| error if a toolchain is not found with that prefix. The current PATH will be |
| searched, so it is possible to use:: |
| |
| [toolchain-prefix] |
| arm: arm-none-eabi- |
| |
| and buildman will find arm-none-eabi-gcc in /usr/bin if you have it |
| installed. |
| |
| Another example:: |
| |
| [toolchain-wrapper] |
| wrapper: ccache |
| |
| This tells buildman to use a compiler wrapper in front of CROSS_COMPILE. In |
| this example, ccache. It doesn't affect the toolchain scan. The wrapper is |
| added when CROSS_COMPILE environtal variable is set. The name in this |
| section is ignored. If more than one line is provided, only the last one |
| is taken. |
| |
| #. Make sure you have the require Python pre-requisites |
| |
| Buildman uses multiprocessing, Queue, shutil, StringIO, ConfigParser and |
| urllib2. These should normally be available, but if you get an error like |
| this then you will need to obtain those modules:: |
| |
| ImportError: No module named multiprocessing |
| |
| |
| #. Check the available toolchains |
| |
| Run this check to make sure that you have a toolchain for every architecture:: |
| |
| $ ./tools/buildman/buildman --list-tool-chains |
| Scanning for tool chains |
| - scanning prefix '/opt/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-' |
| Tool chain test: OK, arch='x86', priority 1 |
| - scanning prefix '/opt/arm-eabi-4.6/bin/arm-eabi-' |
| Tool chain test: OK, arch='arm', priority 1 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/i386-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/i386-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/i386-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/i386-linux/bin/i386-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/i386-linux/usr/bin' |
| Tool chain test: OK, arch='i386', priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/aarch64-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/aarch64-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/aarch64-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/aarch64-linux/usr/bin' |
| Tool chain test: OK, arch='aarch64', priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/microblaze-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/microblaze-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/microblaze-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/microblaze-linux/bin/microblaze-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/microblaze-linux/usr/bin' |
| Tool chain test: OK, arch='microblaze', priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/mips64-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/mips64-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/mips64-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/mips64-linux/bin/mips64-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/mips64-linux/usr/bin' |
| Tool chain test: OK, arch='mips64', priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/sparc64-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/sparc64-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/sparc64-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/sparc64-linux/bin/sparc64-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/sparc64-linux/usr/bin' |
| Tool chain test: OK, arch='sparc64', priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/arm-unknown-linux-gnueabi' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/arm-unknown-linux-gnueabi/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/arm-unknown-linux-gnueabi/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/arm-unknown-linux-gnueabi/usr/bin' |
| Tool chain test: OK, arch='arm', priority 3 |
| Toolchain '/toolchains/gcc-4.9.0-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc' at priority 3 will be ignored because another toolchain for arch 'arm' has priority 1 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/sparc-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/sparc-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/sparc-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/sparc-linux/bin/sparc-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/sparc-linux/usr/bin' |
| Tool chain test: OK, arch='sparc', priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/mips-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/mips-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/mips-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/mips-linux/bin/mips-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/mips-linux/usr/bin' |
| Tool chain test: OK, arch='mips', priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/x86_64-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/x86_64-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/x86_64-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc' |
| - found '/toolchains/gcc-4.9.0-nolibc/x86_64-linux/bin/x86_64-linux-x86_64-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/x86_64-linux/usr/bin' |
| Tool chain test: OK, arch='x86_64', priority 4 |
| Tool chain test: OK, arch='x86_64', priority 4 |
| Toolchain '/toolchains/gcc-4.9.0-nolibc/x86_64-linux/bin/x86_64-linux-x86_64-linux-gcc' at priority 4 will be ignored because another toolchain for arch 'x86_64' has priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/m68k-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/m68k-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/m68k-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/m68k-linux/bin/m68k-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/m68k-linux/usr/bin' |
| Tool chain test: OK, arch='m68k', priority 4 |
| - scanning path '/toolchains/gcc-4.9.0-nolibc/powerpc-linux' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/powerpc-linux/.' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/powerpc-linux/bin' |
| - found '/toolchains/gcc-4.9.0-nolibc/powerpc-linux/bin/powerpc-linux-gcc' |
| - looking in '/toolchains/gcc-4.9.0-nolibc/powerpc-linux/usr/bin' |
| Tool chain test: OK, arch='powerpc', priority 4 |
| - scanning path '/toolchains/gcc-4.6.3-nolibc/bfin-uclinux' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/bfin-uclinux/.' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/bfin-uclinux/bin' |
| - found '/toolchains/gcc-4.6.3-nolibc/bfin-uclinux/bin/bfin-uclinux-gcc' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/bfin-uclinux/usr/bin' |
| Tool chain test: OK, arch='bfin', priority 6 |
| - scanning path '/toolchains/gcc-4.6.3-nolibc/sparc-linux' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/sparc-linux/.' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/sparc-linux/bin' |
| - found '/toolchains/gcc-4.6.3-nolibc/sparc-linux/bin/sparc-linux-gcc' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/sparc-linux/usr/bin' |
| Tool chain test: OK, arch='sparc', priority 4 |
| Toolchain '/toolchains/gcc-4.6.3-nolibc/sparc-linux/bin/sparc-linux-gcc' at priority 4 will be ignored because another toolchain for arch 'sparc' has priority 4 |
| - scanning path '/toolchains/gcc-4.6.3-nolibc/mips-linux' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/mips-linux/.' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/mips-linux/bin' |
| - found '/toolchains/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-gcc' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/mips-linux/usr/bin' |
| Tool chain test: OK, arch='mips', priority 4 |
| Toolchain '/toolchains/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-gcc' at priority 4 will be ignored because another toolchain for arch 'mips' has priority 4 |
| - scanning path '/toolchains/gcc-4.6.3-nolibc/m68k-linux' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/m68k-linux/.' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/m68k-linux/bin' |
| - found '/toolchains/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux-gcc' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/m68k-linux/usr/bin' |
| Tool chain test: OK, arch='m68k', priority 4 |
| Toolchain '/toolchains/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux-gcc' at priority 4 will be ignored because another toolchain for arch 'm68k' has priority 4 |
| - scanning path '/toolchains/gcc-4.6.3-nolibc/powerpc-linux' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/powerpc-linux/.' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/powerpc-linux/bin' |
| - found '/toolchains/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc' |
| - looking in '/toolchains/gcc-4.6.3-nolibc/powerpc-linux/usr/bin' |
| Tool chain test: OK, arch='powerpc', priority 4 |
| Tool chain test: OK, arch='or32', priority 4 |
| - scanning path '/' |
| - looking in '/.' |
| - looking in '/bin' |
| - looking in '/usr/bin' |
| - found '/usr/bin/i586-mingw32msvc-gcc' |
| - found '/usr/bin/c89-gcc' |
| - found '/usr/bin/x86_64-linux-gnu-gcc' |
| - found '/usr/bin/gcc' |
| - found '/usr/bin/c99-gcc' |
| - found '/usr/bin/arm-linux-gnueabi-gcc' |
| - found '/usr/bin/aarch64-linux-gnu-gcc' |
| - found '/usr/bin/winegcc' |
| - found '/usr/bin/arm-linux-gnueabihf-gcc' |
| Tool chain test: OK, arch='i586', priority 11 |
| Tool chain test: OK, arch='c89', priority 11 |
| Tool chain test: OK, arch='x86_64', priority 4 |
| Toolchain '/usr/bin/x86_64-linux-gnu-gcc' at priority 4 will be ignored because another toolchain for arch 'x86_64' has priority 4 |
| Tool chain test: OK, arch='sandbox', priority 11 |
| Tool chain test: OK, arch='c99', priority 11 |
| Tool chain test: OK, arch='arm', priority 4 |
| Toolchain '/usr/bin/arm-linux-gnueabi-gcc' at priority 4 will be ignored because another toolchain for arch 'arm' has priority 1 |
| Tool chain test: OK, arch='aarch64', priority 4 |
| Toolchain '/usr/bin/aarch64-linux-gnu-gcc' at priority 4 will be ignored because another toolchain for arch 'aarch64' has priority 4 |
| Tool chain test: OK, arch='sandbox', priority 11 |
| Toolchain '/usr/bin/winegcc' at priority 11 will be ignored because another toolchain for arch 'sandbox' has priority 11 |
| Tool chain test: OK, arch='arm', priority 4 |
| Toolchain '/usr/bin/arm-linux-gnueabihf-gcc' at priority 4 will be ignored because another toolchain for arch 'arm' has priority 1 |
| List of available toolchains (34): |
| aarch64 : /toolchains/gcc-4.9.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc |
| alpha : /toolchains/gcc-4.9.0-nolibc/alpha-linux/bin/alpha-linux-gcc |
| am33_2.0 : /toolchains/gcc-4.9.0-nolibc/am33_2.0-linux/bin/am33_2.0-linux-gcc |
| arm : /opt/arm-eabi-4.6/bin/arm-eabi-gcc |
| bfin : /toolchains/gcc-4.6.3-nolibc/bfin-uclinux/bin/bfin-uclinux-gcc |
| c89 : /usr/bin/c89-gcc |
| c99 : /usr/bin/c99-gcc |
| frv : /toolchains/gcc-4.9.0-nolibc/frv-linux/bin/frv-linux-gcc |
| h8300 : /toolchains/gcc-4.9.0-nolibc/h8300-elf/bin/h8300-elf-gcc |
| hppa : /toolchains/gcc-4.9.0-nolibc/hppa-linux/bin/hppa-linux-gcc |
| hppa64 : /toolchains/gcc-4.9.0-nolibc/hppa64-linux/bin/hppa64-linux-gcc |
| i386 : /toolchains/gcc-4.9.0-nolibc/i386-linux/bin/i386-linux-gcc |
| i586 : /usr/bin/i586-mingw32msvc-gcc |
| ia64 : /toolchains/gcc-4.9.0-nolibc/ia64-linux/bin/ia64-linux-gcc |
| m32r : /toolchains/gcc-4.9.0-nolibc/m32r-linux/bin/m32r-linux-gcc |
| m68k : /toolchains/gcc-4.9.0-nolibc/m68k-linux/bin/m68k-linux-gcc |
| microblaze: /toolchains/gcc-4.9.0-nolibc/microblaze-linux/bin/microblaze-linux-gcc |
| mips : /toolchains/gcc-4.9.0-nolibc/mips-linux/bin/mips-linux-gcc |
| mips64 : /toolchains/gcc-4.9.0-nolibc/mips64-linux/bin/mips64-linux-gcc |
| or32 : /toolchains/gcc-4.5.1-nolibc/or32-linux/bin/or32-linux-gcc |
| powerpc : /toolchains/gcc-4.9.0-nolibc/powerpc-linux/bin/powerpc-linux-gcc |
| powerpc64 : /toolchains/gcc-4.9.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc |
| ppc64le : /toolchains/gcc-4.9.0-nolibc/ppc64le-linux/bin/ppc64le-linux-gcc |
| s390x : /toolchains/gcc-4.9.0-nolibc/s390x-linux/bin/s390x-linux-gcc |
| sandbox : /usr/bin/gcc |
| sh4 : /toolchains/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-gcc |
| sparc : /toolchains/gcc-4.9.0-nolibc/sparc-linux/bin/sparc-linux-gcc |
| sparc64 : /toolchains/gcc-4.9.0-nolibc/sparc64-linux/bin/sparc64-linux-gcc |
| tilegx : /toolchains/gcc-4.6.2-nolibc/tilegx-linux/bin/tilegx-linux-gcc |
| x86 : /opt/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc |
| x86_64 : /toolchains/gcc-4.9.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc |
| |
| |
| You can see that everything is covered, even some strange ones that won't |
| be used (c88 and c99). This is a feature. |
| |
| |
| #. Install new toolchains if needed |
| |
| You can download toolchains and update the [toolchain] section of the |
| settings file to find them. |
| |
| To make this easier, buildman can automatically download and install |
| toolchains from kernel.org. First list the available architectures:: |
| |
| $ ./tools/buildman/buildman --fetch-arch list |
| Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.3/ |
| Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.2/ |
| Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.1/ |
| Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.2.4/ |
| Available architectures: alpha am33_2.0 arm bfin cris crisv32 frv h8300 |
| hppa hppa64 i386 ia64 m32r m68k mips mips64 or32 powerpc powerpc64 s390x sh4 |
| sparc sparc64 tilegx x86_64 xtensa |
| |
| Then pick one and download it:: |
| |
| $ ./tools/buildman/buildman --fetch-arch or32 |
| Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.3/ |
| Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.6.2/ |
| Checking: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.1/ |
| Downloading: https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.1//x86_64-gcc-4.5.1-nolibc_or32-linux.tar.xz |
| Unpacking to: /home/sjg/.buildman-toolchains |
| Testing |
| - looking in '/home/sjg/.buildman-toolchains/gcc-4.5.1-nolibc/or32-linux/.' |
| - looking in '/home/sjg/.buildman-toolchains/gcc-4.5.1-nolibc/or32-linux/bin' |
| - found '/home/sjg/.buildman-toolchains/gcc-4.5.1-nolibc/or32-linux/bin/or32-linux-gcc' |
| Tool chain test: OK |
| |
| Or download them all from kernel.org and move them to /toolchains directory: |
| |
| .. code-block:: bash |
| |
| ./tools/buildman/buildman --fetch-arch all |
| sudo mkdir -p /toolchains |
| sudo mv ~/.buildman-toolchains/*/* /toolchains/ |
| |
| Buildman should now be set up to use your new toolchain. |
| |
| At the time of writing, U-Boot has these architectures: |
| |
| arc, arm, m68k, microblaze, mips, nios2, powerpc, sandbox, sh, x86, xtensa |
| |
| |
| How to run it |
| ------------- |
| |
| First do a dry run using the -n flag: (replace <branch> with a real, local |
| branch with a valid upstream): |
| |
| .. code-block:: bash |
| |
| ./tools/buildman/buildman -b <branch> -n |
| |
| If it can't detect the upstream branch, try checking out the branch, and |
| doing something like 'git branch --set-upstream-to upstream/master' |
| or something similar. Buildman will try to guess a suitable upstream branch |
| if it can't find one (you will see a message like "Guessing upstream as ..."). |
| You can also use the -c option to manually specify the number of commits to |
| build. |
| |
| As an example:: |
| |
| Dry run, so not doing much. But I would do this: |
| |
| Building 18 commits for 1059 boards (4 threads, 1 job per thread) |
| Build directory: ../lcd9b |
| 5bb3505 Merge branch 'master' of git://git.denx.de/u-boot-arm |
| c18f1b4 tegra: Use const for pinmux_config_pingroup/table() |
| 2f043ae tegra: Add display support to funcmux |
| e349900 tegra: fdt: Add pwm binding and node |
| 424a5f0 tegra: fdt: Add LCD definitions for Tegra |
| 0636ccf tegra: Add support for PWM |
| a994fe7 tegra: Add SOC support for display/lcd |
| fcd7350 tegra: Add LCD driver |
| 4d46e9d tegra: Add LCD support to Nvidia boards |
| 991bd48 arm: Add control over cachability of memory regions |
| 54e8019 lcd: Add CONFIG_LCD_ALIGNMENT to select frame buffer alignment |
| d92aff7 lcd: Add support for flushing LCD fb from dcache after update |
| dbd0677 tegra: Align LCD frame buffer to section boundary |
| 0cff9b8 tegra: Support control of cache settings for LCD |
| 9c56900 tegra: fdt: Add LCD definitions for Seaboard |
| 5cc29db lcd: Add CONFIG_CONSOLE_SCROLL_LINES option to speed console |
| cac5a23 tegra: Enable display/lcd support on Seaboard |
| 49ff541 wip |
| |
| Total boards to build for each commit: 1059 |
| |
| This shows that it will build all 1059 boards, using 4 threads (because |
| we have a 4-core CPU). Each thread will run with -j1, meaning that each |
| make job will use a single CPU. The list of commits to be built helps you |
| confirm that things look about right. Notice that buildman has chosen a |
| 'base' directory for you, immediately above your source tree. |
| |
| Buildman works entirely inside the base directory, here ../lcd9b, |
| creating a working directory for each thread, and creating output |
| directories for each commit and board. |
| |
| |
| Suggested Workflow |
| ------------------ |
| |
| To run the build for real, take off the -n: |
| |
| .. code-block:: bash |
| |
| ./tools/buildman/buildman -b <branch> |
| |
| Buildman will set up some working directories, and get started. After a |
| minute or so it will settle down to a steady pace, with a display like this:: |
| |
| Building 18 commits for 1059 boards (4 threads, 1 job per thread) |
| 528 36 124 /19062 -18374 1:13:30 : SIMPC8313_SP |
| |
| This means that it is building 19062 board/commit combinations. So far it |
| has managed to successfully build 528. Another 36 have built with warnings, |
| and 124 more didn't build at all. It has 18374 builds left to complete. |
| Buildman expects to complete the process in around an hour and a quarter. |
| Use this time to buy a faster computer. |
| |
| |
| To find out how the build went, ask for a summary with -s. You can do this |
| either before the build completes (presumably in another terminal) or |
| afterwards. Let's work through an example of how this is used:: |
| |
| $ ./tools/buildman/buildman -b lcd9b -s |
| ... |
| 01: Merge branch 'master' of git://git.denx.de/u-boot-arm |
| powerpc: + galaxy5200_LOWBOOT |
| 02: tegra: Use const for pinmux_config_pingroup/table() |
| 03: tegra: Add display support to funcmux |
| 04: tegra: fdt: Add pwm binding and node |
| 05: tegra: fdt: Add LCD definitions for Tegra |
| 06: tegra: Add support for PWM |
| 07: tegra: Add SOC support for display/lcd |
| 08: tegra: Add LCD driver |
| 09: tegra: Add LCD support to Nvidia boards |
| 10: arm: Add control over cachability of memory regions |
| 11: lcd: Add CONFIG_LCD_ALIGNMENT to select frame buffer alignment |
| 12: lcd: Add support for flushing LCD fb from dcache after update |
| arm: + lubbock |
| 13: tegra: Align LCD frame buffer to section boundary |
| 14: tegra: Support control of cache settings for LCD |
| 15: tegra: fdt: Add LCD definitions for Seaboard |
| 16: lcd: Add CONFIG_CONSOLE_SCROLL_LINES option to speed console |
| 17: tegra: Enable display/lcd support on Seaboard |
| 18: wip |
| |
| This shows which commits have succeeded and which have failed. In this case |
| the build is still in progress so many boards are not built yet (use -u to |
| see which ones). But already we can see a few failures. The galaxy5200_LOWBOOT |
| never builds correctly. This could be a problem with our toolchain, or it |
| could be a bug in the upstream. The good news is that we probably don't need |
| to blame our commits. The bad news is that our commits are not tested on that |
| board. |
| |
| Commit 12 broke lubbock. That's what the '+ lubbock', in red, means. The |
| failure is never fixed by a later commit, or you would see lubbock again, in |
| green, without the +. |
| |
| To see the actual error:: |
| |
| $ ./tools/buildman/buildman -b <branch> -se |
| ... |
| 12: lcd: Add support for flushing LCD fb from dcache after update |
| arm: + lubbock |
| +common/libcommon.o: In function `lcd_sync': |
| +common/lcd.c:120: undefined reference to `flush_dcache_range' |
| +arm-none-linux-gnueabi-ld: BFD (Sourcery G++ Lite 2010q1-202) 2.19.51.20090709 assertion fail /scratch/julian/2010q1-release-linux-lite/obj/binutils-src-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/bfd/elf32-arm.c:12572 |
| +make: *** [build/u-boot] Error 139 |
| 13: tegra: Align LCD frame buffer to section boundary |
| 14: tegra: Support control of cache settings for LCD |
| 15: tegra: fdt: Add LCD definitions for Seaboard |
| 16: lcd: Add CONFIG_CONSOLE_SCROLL_LINES option to speed console |
| -common/lcd.c:120: undefined reference to `flush_dcache_range' |
| +common/lcd.c:125: undefined reference to `flush_dcache_range' |
| 17: tegra: Enable display/lcd support on Seaboard |
| 18: wip |
| |
| So the problem is in lcd.c, due to missing cache operations. This information |
| should be enough to work out what that commit is doing to break these |
| boards. (In this case pxa did not have cache operations defined). |
| |
| Note that if there were other boards with errors, the above command would |
| show their errors also. Each line is shown only once. So if lubbock and snow |
| produce the same error, we just see:: |
| |
| 12: lcd: Add support for flushing LCD fb from dcache after update |
| arm: + lubbock snow |
| +common/libcommon.o: In function `lcd_sync': |
| +common/lcd.c:120: undefined reference to `flush_dcache_range' |
| +arm-none-linux-gnueabi-ld: BFD (Sourcery G++ Lite 2010q1-202) 2.19.51.20090709 assertion fail /scratch/julian/2010q1-release-linux-lite/obj/binutils-src-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/bfd/elf32-arm.c:12572 |
| +make: *** [build/u-boot] Error 139 |
| |
| But if you did want to see just the errors for lubbock, use: |
| |
| .. code-block:: bash |
| |
| ./tools/buildman/buildman -b <branch> -se lubbock |
| |
| If you see error lines marked with '-', that means that the errors were fixed |
| by that commit. Sometimes commits can be in the wrong order, so that a |
| breakage is introduced for a few commits and fixed by later commits. This |
| shows up clearly with buildman. You can then reorder the commits and try |
| again. |
| |
| At commit 16, the error moves: you can see that the old error at line 120 |
| is fixed, but there is a new one at line 126. This is probably only because |
| we added some code and moved the broken line further down the file. |
| |
| As mentioned, if many boards have the same error, then -e will display the |
| error only once. This makes the output as concise as possible. To see which |
| boards have each error, use -l. So it is safe to omit the board name - you |
| will not get lots of repeated output for every board. |
| |
| Buildman tries to distinguish warnings from errors, and shows warning lines |
| separately with a 'w' prefix. Warnings introduced show as yellow. Warnings |
| fixed show as cyan. |
| |
| The full build output in this case is available in:: |
| |
| ../lcd9b/12_of_18_gd92aff7_lcd--Add-support-for/lubbock/ |
| |
| Files: |
| |
| done |
| Indicates the build was done, and holds the return code from make. This is 0 |
| for a good build, typically 2 for a failure. |
| |
| err |
| Output from stderr, if any. Errors and warnings appear here. |
| |
| log |
| Output from stdout. Normally there isn't any since buildman runs in silent |
| mode. Use -V to force a verbose build (this passes V=1 to 'make') |
| |
| toolchain |
| Shows information about the toolchain used for the build. |
| |
| sizes |
| Shows image size information. |
| |
| It is possible to get the build binary output there also. Use the -k option |
| for this. In that case you will also see some output files, like: |
| |
| - System.map |
| - toolchain |
| - u-boot |
| - u-boot.bin |
| - u-boot.map |
| - autoconf.mk |
| - SPL/TPL versions like u-boot-spl and u-boot-spl.bin if available |
| |
| |
| Checking Image Sizes |
| -------------------- |
| |
| A key requirement for U-Boot is that you keep code/data size to a minimum. |
| Where a new feature increases this noticeably it should normally be put |
| behind a CONFIG flag so that boards can leave it disabled and keep the image |
| size more or less the same with each new release. |
| |
| To check the impact of your commits on image size, use -S. For example:: |
| |
| $ ./tools/buildman/buildman -b us-x86 -sS |
| Summary of 10 commits for 1066 boards (4 threads, 1 job per thread) |
| 01: MAKEALL: add support for per architecture toolchains |
| 02: x86: Add function to get top of usable ram |
| x86: (for 1/3 boards) text -272.0 rodata +41.0 |
| 03: x86: Add basic cache operations |
| 04: x86: Permit bootstage and timer data to be used prior to relocation |
| x86: (for 1/3 boards) data +16.0 |
| 05: x86: Add an __end symbol to signal the end of the U-Boot binary |
| x86: (for 1/3 boards) text +76.0 |
| 06: x86: Rearrange the output input to remove BSS |
| x86: (for 1/3 boards) bss -2140.0 |
| 07: x86: Support relocation of FDT on start-up |
| x86: + coreboot-x86 |
| 08: x86: Add error checking to x86 relocation code |
| 09: x86: Adjust link device tree include file |
| 10: x86: Enable CONFIG_OF_CONTROL on coreboot |
| |
| |
| You can see that image size only changed on x86, which is good because this |
| series is not supposed to change any other board. From commit 7 onwards the |
| build fails so we don't get code size numbers. The numbers are fractional |
| because they are an average of all boards for that architecture. The |
| intention is to allow you to quickly find image size problems introduced by |
| your commits. |
| |
| Note that the 'text' region and 'rodata' are split out. You should add the |
| two together to get the total read-only size (reported as the first column |
| in the output from binutil's 'size' utility). |
| |
| A useful option is --step which lets you skip some commits. For example |
| --step 2 will show the image sizes for only every 2nd commit (so it will |
| compare the image sizes of the 1st, 3rd, 5th... commits). You can also use |
| --step 0 which will compare only the first and last commits. This is useful |
| for an overview of how your entire series affects code size. It will build |
| only the upstream commit and your final branch commit. |
| |
| You can also use -d to see a detailed size breakdown for each board. This |
| list is sorted in order from largest growth to largest reduction. |
| |
| It is even possible to go a little further with the -B option (--bloat). This |
| shows where U-Boot has bloated, breaking the size change down to the function |
| level. Example output is below:: |
| |
| $ ./tools/buildman/buildman -b us-mem4 -sSdB |
| ... |
| 19: Roll crc32 into hash infrastructure |
| arm: (for 10/10 boards) all -143.4 bss +1.2 data -4.8 rodata -48.2 text -91.6 |
| paz00 : all +23 bss -4 rodata -29 text +56 |
| u-boot: add: 1/0, grow: 3/-2 bytes: 168/-104 (64) |
| function old new delta |
| hash_command 80 160 +80 |
| crc32_wd_buf - 56 +56 |
| ext4fs_read_file 540 568 +28 |
| insert_var_value_sub 688 692 +4 |
| run_list_real 1996 1992 -4 |
| do_mem_crc 168 68 -100 |
| trimslice : all -9 bss +16 rodata -29 text +4 |
| u-boot: add: 1/0, grow: 1/-3 bytes: 136/-124 (12) |
| function old new delta |
| hash_command 80 160 +80 |
| crc32_wd_buf - 56 +56 |
| ext4fs_iterate_dir 672 668 -4 |
| ext4fs_read_file 568 548 -20 |
| do_mem_crc 168 68 -100 |
| whistler : all -9 bss +16 rodata -29 text +4 |
| u-boot: add: 1/0, grow: 1/-3 bytes: 136/-124 (12) |
| function old new delta |
| hash_command 80 160 +80 |
| crc32_wd_buf - 56 +56 |
| ext4fs_iterate_dir 672 668 -4 |
| ext4fs_read_file 568 548 -20 |
| do_mem_crc 168 68 -100 |
| seaboard : all -9 bss -28 rodata -29 text +48 |
| u-boot: add: 1/0, grow: 3/-2 bytes: 160/-104 (56) |
| function old new delta |
| hash_command 80 160 +80 |
| crc32_wd_buf - 56 +56 |
| ext4fs_read_file 548 568 +20 |
| run_list_real 1996 2000 +4 |
| do_nandboot 760 756 -4 |
| do_mem_crc 168 68 -100 |
| colibri_t20 : all -9 rodata -29 text +20 |
| u-boot: add: 1/0, grow: 2/-3 bytes: 140/-112 (28) |
| function old new delta |
| hash_command 80 160 +80 |
| crc32_wd_buf - 56 +56 |
| read_abs_bbt 204 208 +4 |
| do_nandboot 760 756 -4 |
| ext4fs_read_file 576 568 -8 |
| do_mem_crc 168 68 -100 |
| ventana : all -37 bss -12 rodata -29 text +4 |
| u-boot: add: 1/0, grow: 1/-3 bytes: 136/-124 (12) |
| function old new delta |
| hash_command 80 160 +80 |
| crc32_wd_buf - 56 +56 |
| ext4fs_iterate_dir 672 668 -4 |
| ext4fs_read_file 568 548 -20 |
| do_mem_crc 168 68 -100 |
| harmony : all -37 bss -16 rodata -29 text +8 |
| u-boot: add: 1/0, grow: 2/-3 bytes: 140/-124 (16) |
| function old new delta |
| hash_command 80 160 +80 |
| crc32_wd_buf - 56 +56 |
| nand_write_oob_syndrome 428 432 +4 |
| ext4fs_iterate_dir 672 668 -4 |
| ext4fs_read_file 568 548 -20 |
| do_mem_crc 168 68 -100 |
| medcom-wide : all -417 bss +28 data -16 rodata -93 text -336 |
| u-boot: add: 1/-1, grow: 1/-2 bytes: 88/-376 (-288) |
| function old new delta |
| crc32_wd_buf - 56 +56 |
| do_fat_read_at 2872 2904 +32 |
| hash_algo 16 - -16 |
| do_mem_crc 168 68 -100 |
| hash_command 420 160 -260 |
| tec : all -449 bss -4 data -16 rodata -93 text -336 |
| u-boot: add: 1/-1, grow: 1/-2 bytes: 88/-376 (-288) |
| function old new delta |
| crc32_wd_buf - 56 +56 |
| do_fat_read_at 2872 2904 +32 |
| hash_algo 16 - -16 |
| do_mem_crc 168 68 -100 |
| hash_command 420 160 -260 |
| plutux : all -481 bss +16 data -16 rodata -93 text -388 |
| u-boot: add: 1/-1, grow: 1/-3 bytes: 68/-408 (-340) |
| function old new delta |
| crc32_wd_buf - 56 +56 |
| do_load_serial_bin 1688 1700 +12 |
| hash_algo 16 - -16 |
| do_fat_read_at 2904 2872 -32 |
| do_mem_crc 168 68 -100 |
| hash_command 420 160 -260 |
| powerpc: (for 5/5 boards) all +37.4 data -3.2 rodata -41.8 text +82.4 |
| MPC8610HPCD : all +55 rodata -29 text +84 |
| u-boot: add: 1/0, grow: 0/-1 bytes: 176/-96 (80) |
| function old new delta |
| hash_command - 176 +176 |
| do_mem_crc 184 88 -96 |
| MPC8641HPCN : all +55 rodata -29 text +84 |
| u-boot: add: 1/0, grow: 0/-1 bytes: 176/-96 (80) |
| function old new delta |
| hash_command - 176 +176 |
| do_mem_crc 184 88 -96 |
| MPC8641HPCN_36BIT: all +55 rodata -29 text +84 |
| u-boot: add: 1/0, grow: 0/-1 bytes: 176/-96 (80) |
| function old new delta |
| hash_command - 176 +176 |
| do_mem_crc 184 88 -96 |
| sbc8641d : all +55 rodata -29 text +84 |
| u-boot: add: 1/0, grow: 0/-1 bytes: 176/-96 (80) |
| function old new delta |
| hash_command - 176 +176 |
| do_mem_crc 184 88 -96 |
| xpedite517x : all -33 data -16 rodata -93 text +76 |
| u-boot: add: 1/-1, grow: 0/-1 bytes: 176/-112 (64) |
| function old new delta |
| hash_command - 176 +176 |
| hash_algo 16 - -16 |
| do_mem_crc 184 88 -96 |
| ... |
| |
| |
| This shows that commit 19 has reduced codesize for arm slightly and increased |
| it for powerpc. This increase was offset in by reductions in rodata and |
| data/bss. |
| |
| Shown below the summary lines are the sizes for each board. Below each board |
| are the sizes for each function. This information starts with: |
| |
| add |
| number of functions added / removed |
| |
| grow |
| number of functions which grew / shrunk |
| |
| bytes |
| number of bytes of code added to / removed from all functions, plus the total |
| byte change in brackets |
| |
| The change seems to be that hash_command() has increased by more than the |
| do_mem_crc() function has decreased. The function sizes typically add up to |
| roughly the text area size, but note that every read-only section except |
| rodata is included in 'text', so the function total does not exactly |
| correspond. |
| |
| It is common when refactoring code for the rodata to decrease as the text size |
| increases, and vice versa. |
| |
| |
| .. _buildman_settings: |
| |
| The .buildman settings file |
| --------------------------- |
| |
| The .buildman file provides information about the available toolchains and |
| also allows build flags to be passed to 'make'. It consists of several |
| sections, with the section name in square brackets. Within each section are |
| a set of (tag, value) pairs. |
| |
| '[global]' section |
| allow-missing |
| Indicates the policy to use for missing blobs. Note that the flags |
| ``--allow-missing`` (``-M``) and ``--no-allow-missing`` (``--no-a``) |
| override these setting. |
| |
| always |
| Run with ``-M`` by default. |
| |
| multiple |
| Run with ``-M`` if more than one board is being built. |
| |
| branch |
| Run with ``-M`` if a branch is being built. |
| |
| Note that the last two can be given together:: |
| |
| allow-missing = multiple branch |
| |
| '[toolchain]' section |
| This lists the available toolchains. The tag here doesn't matter, but |
| make sure it is unique. The value is the path to the toolchain. Buildman |
| will look in that path for a file ending in 'gcc'. It will then execute |
| it to check that it is a C compiler, passing only the --version flag to |
| it. If the return code is 0, buildman assumes that it is a valid C |
| compiler. It uses the first part of the name as the architecture and |
| strips off the last part when setting the CROSS_COMPILE environment |
| variable (parts are delimited with a hyphen). |
| |
| For example powerpc-linux-gcc will be noted as a toolchain for 'powerpc' |
| and CROSS_COMPILE will be set to powerpc-linux- when using it. |
| |
| '[toolchain-alias]' section |
| This converts toolchain architecture names to U-Boot names. For example, |
| if an x86 toolchains is called i386-linux-gcc it will not normally be |
| used for architecture 'x86'. Adding 'x86: i386 x86_64' to this section |
| will tell buildman that the i386 and x86_64 toolchains can be used for |
| the x86 architecture. |
| |
| '[make-flags]' section |
| U-Boot's build system supports a few flags (such as BUILD_TAG) which |
| affect the build product. These flags can be specified in the buildman |
| settings file. They can also be useful when building U-Boot against other |
| open source software. |
| |
| [make-flags] |
| at91-boards=ENABLE_AT91_TEST=1 |
| snapper9260=${at91-boards} BUILD_TAG=442 |
| snapper9g45=${at91-boards} BUILD_TAG=443 |
| |
| This will use 'make ENABLE_AT91_TEST=1 BUILD_TAG=442' for snapper9260 |
| and 'make ENABLE_AT91_TEST=1 BUILD_TAG=443' for snapper9g45. A special |
| variable ${target} is available to access the target name (snapper9260 |
| and snapper9g20 in this case). Variables are resolved recursively. Note |
| that variables can only contain the characters A-Z, a-z, 0-9, hyphen (-) |
| and underscore (_). |
| |
| It is expected that any variables added are dealt with in U-Boot's |
| config.mk file and documented in the README. |
| |
| Note that you can pass ad-hoc options to the build using environment |
| variables, for example: |
| |
| SOME_OPTION=1234 ./tools/buildman/buildman my_board |
| |
| |
| Quick Sanity Check |
| ------------------ |
| |
| If you have made changes and want to do a quick sanity check of the |
| currently checked-out source, run buildman without the -b flag. This will |
| build the selected boards and display build status as it runs (i.e. -v is |
| enabled automatically). Use -e to see errors/warnings as well. |
| |
| |
| Building Ranges |
| --------------- |
| |
| You can build a range of commits by specifying a range instead of a branch |
| when using the -b flag. For example:: |
| |
| buildman -b upstream/master..us-buildman |
| |
| will build commits in us-buildman that are not in upstream/master. |
| |
| |
| Building Faster |
| --------------- |
| |
| By default, buildman doesn't execute 'make mrproper' prior to building the |
| first commit for each board. This reduces the amount of work 'make' does, and |
| hence speeds up the build. To force use of 'make mrproper', use -the -m flag. |
| This flag will slow down any buildman invocation, since it increases the amount |
| of work done on any build. |
| |
| One possible application of buildman is as part of a continual edit, build, |
| edit, build, ... cycle; repeatedly applying buildman to the same change or |
| series of changes while making small incremental modifications to the source |
| each time. This provides quick feedback regarding the correctness of recent |
| modifications. In this scenario, buildman's default choice of build directory |
| causes more build work to be performed than strictly necessary. |
| |
| By default, each buildman thread uses a single directory for all builds. When a |
| thread builds multiple boards, the configuration built in this directory will |
| cycle through various different configurations, one per board built by the |
| thread. Variations in the configuration will force a rebuild of affected source |
| files when a thread switches between boards. Ideally, such buildman-induced |
| rebuilds would not happen, thus allowing the build to operate as efficiently as |
| the build system and source changes allow. buildman's -P flag may be used to |
| enable this; -P causes each board to be built in a separate (board-specific) |
| directory, thus avoiding any buildman-induced configuration changes in any |
| build directory. |
| |
| U-Boot's build system embeds information such as a build timestamp into the |
| final binary. This information varies each time U-Boot is built. This causes |
| various files to be rebuilt even if no source changes are made, which in turn |
| requires that the final U-Boot binary be re-linked. This unnecessary work can |
| be avoided by turning off the timestamp feature. This can be achieved using |
| the `-r` flag, which enables reproducible builds by setting |
| `SOURCE_DATE_EPOCH=0` when building. |
| |
| Combining all of these options together yields the command-line shown below. |
| This will provide the quickest possible feedback regarding the current content |
| of the source tree, thus allowing rapid tested evolution of the code:: |
| |
| ./tools/buildman/buildman -Pr tegra |
| |
| |
| Checking configuration |
| ---------------------- |
| |
| A common requirement when converting CONFIG options to Kconfig is to check |
| that the effective configuration has not changed due to the conversion. |
| Buildman supports this with the -K option, used after a build. This shows |
| differences in effective configuration between one commit and the next. |
| |
| For example:: |
| |
| $ buildman -b kc4 -sK |
| ... |
| 43: Convert CONFIG_SPL_USBETH_SUPPORT to Kconfig |
| arm: |
| + u-boot.cfg: CONFIG_SPL_ENV_SUPPORT=1 CONFIG_SPL_NET=1 |
| + u-boot-spl.cfg: CONFIG_SPL_MMC=1 CONFIG_SPL_NAND_SUPPORT=1 |
| + all: CONFIG_SPL_ENV_SUPPORT=1 CONFIG_SPL_MMC=1 CONFIG_SPL_NAND_SUPPORT=1 CONFIG_SPL_NET=1 |
| am335x_evm_usbspl : |
| + u-boot.cfg: CONFIG_SPL_ENV_SUPPORT=1 CONFIG_SPL_NET=1 |
| + u-boot-spl.cfg: CONFIG_SPL_MMC=1 CONFIG_SPL_NAND_SUPPORT=1 |
| + all: CONFIG_SPL_ENV_SUPPORT=1 CONFIG_SPL_MMC=1 CONFIG_SPL_NAND_SUPPORT=1 CONFIG_SPL_NET=1 |
| 44: Convert CONFIG_SPL_USB_HOST to Kconfig |
| ... |
| |
| This shows that commit 44 enabled three new options for the board |
| am335x_evm_usbspl which were not enabled in commit 43. There is also a |
| summary for 'arm' showing all the changes detected for that architecture. |
| In this case there is only one board with changes, so 'arm' output is the |
| same as 'am335x_evm_usbspl'/ |
| |
| The -K option uses the u-boot.cfg, spl/u-boot-spl.cfg and tpl/u-boot-tpl.cfg |
| files which are produced by a build. If all you want is to check the |
| configuration you can in fact avoid doing a full build, using --config-only. |
| This tells buildman to configuration U-Boot and create the .cfg files, but not |
| actually build the source. This is 5-10 times faster than doing a full build. |
| |
| By default buildman considers the follow two configuration methods |
| equivalent:: |
| |
| #define CONFIG_SOME_OPTION |
| |
| CONFIG_SOME_OPTION=y |
| |
| The former would appear in a header filer and the latter in a defconfig |
| file. The achieve this, buildman considers 'y' to be '1' in configuration |
| variables. This avoids lots of useless output when converting a CONFIG |
| option to Kconfig. To disable this behaviour, use --squash-config-y. |
| |
| |
| Checking the environment |
| ------------------------ |
| |
| When converting CONFIG options which manipulate the default environment, |
| a common requirement is to check that the default environment has not |
| changed due to the conversion. Buildman supports this with the -U option, |
| used after a build. This shows differences in the default environment |
| between one commit and the next. |
| |
| For example:: |
| |
| $ buildman -b squash brppt1 -sU |
| Summary of 2 commits for 3 boards (3 threads, 3 jobs per thread) |
| 01: Migrate bootlimit to Kconfig |
| 02: Squashed commit of the following: |
| c brppt1_mmc: altbootcmd=mmc dev 1; run mmcboot0; -> mmc dev 1; run mmcboot0 |
| c brppt1_spi: altbootcmd=mmc dev 1; run mmcboot0; -> mmc dev 1; run mmcboot0 |
| + brppt1_nand: altbootcmd=run usbscript |
| - brppt1_nand: altbootcmd=run usbscript |
| (no errors to report) |
| |
| This shows that commit 2 modified the value of 'altbootcmd' for 'brppt1_mmc' |
| and 'brppt1_spi', removing a trailing semicolon. 'brppt1_nand' gained an a |
| value for 'altbootcmd', but lost one for ' altbootcmd'. |
| |
| The -U option uses the u-boot.env files which are produced by a build. |
| Internally, buildman writes out an out-env file into the build directory for |
| later comparison. |
| |
| |
| Building with clang |
| ------------------- |
| |
| To build with clang (sandbox only), use the -O option to override the |
| toolchain. For example: |
| |
| .. code-block:: bash |
| |
| buildman -O clang-7 --board sandbox |
| |
| |
| Building without LTO |
| -------------------- |
| |
| Link-time optimisation (LTO) is designed to reduce code size by globally |
| optimising the U-Boot build. Unfortunately this can dramatically slow down |
| builds. This is particularly noticeable when running a lot of builds. |
| |
| Use the -L (--no-lto) flag to disable LTO. |
| |
| .. code-block:: bash |
| |
| buildman -L --board sandbox |
| |
| |
| Doing a simple build |
| -------------------- |
| |
| In some cases you just want to build a single board and get the full output, use |
| the -w option, for example: |
| |
| .. code-block:: bash |
| |
| buildman -o /tmp/build --board sandbox -w |
| |
| This will write the full build into /tmp/build including object files. You must |
| specify the output directory with -o when using -w. |
| |
| |
| Support for IDEs (Integrated Development Environments) |
| ------------------------------------------------------ |
| |
| Normally buildman summarises the output and shows information indicating the |
| meaning of each line of output. For example a '+' symbol appears at the start of |
| each error line. Also, buildman prints information about what it is about to do, |
| along with a summary at the end. |
| |
| When using buildman from an IDE, it is helpful to drop this behaviour. Use the |
| -I/--ide option for that. You might find -W helpful also so that warnings do |
| not cause the build to fail: |
| |
| .. code-block:: bash |
| |
| buildman -o /tmp/build --board sandbox -wWI |
| |
| |
| Support for binary blobs |
| ------------------------ |
| |
| U-Boot is moving to using Binman (see :doc:`../develop/package/binman`) for |
| dealing with the complexities of packaging U-Boot along with binary files from |
| other projects. These are called 'external blobs' by Binman. |
| |
| Typically a missing external blob causes a build failure. For build testing of |
| a lot of boards, or boards for which you do not have the blobs, you can use the |
| -M flag to allow missing blobs. This marks the build as if it succeeded, |
| although with warnings shown, including 'Some images are invalid'. If any boards |
| fail in this way, buildman exits with status 101. |
| |
| To convert warnings to errors, use -E. To make buildman return success with |
| these warnings, use -W. |
| |
| It is generally safe to default to enabling -M for all runs of buildman, so long |
| as you check the exit code. To do this, add:: |
| |
| allow-missing = "always" |
| |
| to the top of the buildman_settings_ file. |
| |
| |
| Changing the configuration |
| -------------------------- |
| |
| Sometimes it is useful to change the CONFIG options for a build on the fly. This |
| can be used to build a board (or multiple) with a few changes to see the impact. |
| The -a option supports this: |
| |
| .. code-block:: bash |
| |
| -a <cfg> |
| |
| where <cfg> is a CONFIG option (with or without the `CONFIG_` prefix) to enable. |
| For example: |
| |
| .. code-block:: bash |
| |
| buildman -a CMD_SETEXPR_FMT |
| |
| will build with CONFIG_CMD_SETEXPR_FMT enabled. |
| |
| You can disable options by preceding them with tilde (~). You can specify the |
| -a option multiple times: |
| |
| .. code-block:: bash |
| |
| buildman -a CMD_SETEXPR_FMT -a ~CMDLINE |
| |
| Some options have values, in which case you can change them: |
| |
| .. code-block:: bash |
| |
| buildman -a 'BOOTCOMMAND="echo hello"' CONFIG_SYS_LOAD_ADDR=0x1000 |
| |
| Note that you must put quotes around string options and the whole thing must be |
| in single quotes, to make sure the shell leave it alone. |
| |
| If you try to set an option that does not exist, or that cannot be changed for |
| some other reason (e.g. it is 'selected' by another option), then buildman |
| shows an error:: |
| |
| $ buildman --board sandbox -a FRED |
| Building current source for 1 boards (1 thread, 32 jobs per thread) |
| 0 0 0 /1 -1 (starting)errs |
| Some CONFIG adjustments did not take effect. This may be because |
| the request CONFIGs do not exist or conflict with others. |
| |
| Failed adjustments: |
| |
| FRED Missing expected line: CONFIG_FRED=y |
| |
| |
| One major caveat with this feature with branches (-b) is that buildman does not |
| name the output directories differently when you change the configuration, so |
| doing the same build again with different configuration will not trigger a |
| rebuild. You can use -f to work around that. |
| |
| |
| Other options |
| ------------- |
| |
| Buildman has various other command-line options. Try --help to see them. |
| |
| To find out what toolchain prefix buildman will use for a build, use the -A |
| option. |
| |
| To request that compiler warnings be promoted to errors, use -E. This passes the |
| -Werror flag to the compiler. Note that the build can still produce warnings |
| with -E, e.g. the migration warnings:: |
| |
| ===================== WARNING ====================== |
| This board does not use CONFIG_DM_MMC. Please update |
| ... |
| ==================================================== |
| |
| When doing builds, Buildman's return code will reflect the overall result:: |
| |
| 0 (success) No errors or warnings found |
| 100 Errors found |
| 101 Warnings found (only if no -W) |
| |
| You can use -W to tell Buildman to return 0 (success) instead of 101 when |
| warnings are found. Note that it can be useful to combine -E and -W. This means |
| that all compiler warnings will produce failures (code 100) and all other |
| warnings will produce success (since 101 is changed to 0). |
| |
| If there are both warnings and errors, errors win, so buildman returns 100. |
| |
| The -y option is provided (for use with -s) to ignore the bountiful device-tree |
| warnings. Similarly, -Y tells buildman to ignore the migration warnings. |
| |
| Sometimes you might get an error in a thread that is not handled by buildman, |
| perhaps due to a failure of a tool that it calls. You might see the output, but |
| then buildman hangs. Failing to handle any eventuality is a bug in buildman and |
| should be reported. But you can use -T0 to disable threading and hopefully |
| figure out the root cause of the build failure. |
| |
| Build summary |
| ------------- |
| |
| When buildman finishes it shows a summary, something like this:: |
| |
| Completed: 5 total built, duration 0:00:21, rate 0.24 |
| |
| This shows that a total of 5 builds were done across all selected boards, it |
| took 21 seconds and the builds happened at the rate of 0.24 per second. The |
| latter number depends on the speed of your machine and the efficiency of the |
| U-Boot build. |
| |
| |
| Using boards.cfg |
| ---------------- |
| |
| This file is no-longer needed by buildman but it is still generated in the |
| working directory. This helps avoid a delay on every build, since scanning all |
| the Kconfig files takes a few seconds. Use the `-R <filename>` flag to force |
| regeneration of the file - in that case buildman exits after writing the file |
| with exit code 2 if there was an error in the maintainer files. To use the |
| default filename, use a hyphen, i.e. `-R -`. |
| |
| You should use 'buildman -nv <criteria>' instead of greoing the boards.cfg file, |
| since it may be dropped altogether in future. |
| |
| |
| Checking maintainers |
| -------------------- |
| |
| Sometimes a board is added without a corresponding entry in a MAINTAINERS file. |
| Use the `--maintainer-check` option to check this:: |
| |
| $ buildman --maintainer-check |
| WARNING: board/mikrotik/crs3xx-98dx3236/MAINTAINERS: missing defconfig ending at line 7 |
| WARNING: no maintainers for 'clearfog_spi' |
| |
| Buildman returns with an exit code of 2 if there area any warnings. |
| |
| An experimental `--full-check option` also checks for boards which don't have a |
| CONFIG_TARGET_xxx where xxx corresponds to their defconfig filename. This is |
| not strictly necessary, but may be useful information. |
| |
| |
| Checking the command |
| -------------------- |
| |
| Buildman writes out the toolchain information to a `toolchain` file within the |
| output directory. It also writes the commands used to build U-Boot in an |
| `out-cmd` file. You can check these if you suspect something strange is |
| happening. |
| |
| TODO |
| ---- |
| |
| Many improvements have been made over the years. There is still quite a bit of |
| scope for more though, e.g.: |
| |
| - easier access to log files |
| - 'hunting' for problems, perhaps by building a few boards for each arch, or |
| checking commits for changed files and building only boards which use those |
| files |
| |
| |
| Credits |
| ------- |
| |
| Thanks to Grant Grundler <grundler@chromium.org> for his ideas for improving |
| the build speed by building all commits for a board instead of the other |
| way around. |
| |
| .. sectionauthor:: Simon Glass |
| .. sectionauthor:: Copyright (c) 2013 The Chromium OS Authors. |
| .. sectionauthor:: sjg@chromium.org |
| .. Halloween 2012 |
| .. Updated 12-12-12 |
| .. Updated 23-02-13 |
| .. Updated 09-04-20 |
