简介
Bazel是一个类似于类似于 Make、Maven 和 Gradle的构建和测试工具。使用 Java、C 、Go、Android、iOS 以及许多其他语言和平台进行构建和测试。Bazel 可在 Windows、macOS 和 Linux 上运行。
Bazel近来很火，因为Bazel更容易与 Docker 和 Kubernetes 集成，其与项目的CI/CD挂钩，帮助提生产力。当然Bazel还有很多其他的优势：
- 开源
- 100%在沙箱环境构建
- 支持任何语言，因为除了直接支持的语言，还有支持语言扩展，比如官方维护的go语言扩展rules_go。支持编写任何其他语言的扩展，甚至自创了一套配置语言Starlark。
- 支持超大项目
- 快速构建，快速测试
install bazel 的两种方式
bazel release 页面下载二进制文件
https://github.com/bazelbuild/bazel/releases
自行编译成二进制文件
代码语言：javascript复制[developer@localhost ~]$ git clone https://github.com/sub-mod/bazel-builds
Cloning into 'bazel-builds'...
remote: Enumerating objects: 8, done.
remote: Total 8 (delta 0), reused 0 (delta 0), pack-reused 8Unpacking objects: 100% (8/8), done.[developer@localhost ~]$ cd bazel-builds/[developer@localhost bazel-builds]$ lscompile_bazel.sh Dockerfile README.md[developer@localhost bazel-builds]$ docker build -t submod/bazel-build -f Dockerfile .Sending build context to Docker daemon 60.42kB
Step 1/11 : FROM quay.io/sub_mod/manylinux2010-s2i
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Digest: sha256:e7888ae2ecfe912ce192c16ab07fbcb3239a18ddcbd01a649ce9cd99e5fc4395
Status: Downloaded newer image for quay.io/sub_mod/manylinux2010-s2i:latest
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Step 2/11 : LABEL Author "Subin Modeel <smodeel@redhat.com>"
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Step 3/11 : USER root
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Step 4/11 : ENV JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0*" PLATFORM="el6"
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Step 5/11 : RUN yum install -y centos-release-scl unzip tree mlocate vim wget ccache sudo && yum install -y devtoolset-7 rh-python36 && yum install -y java-1.8.0-openjdk java-1.8.0-openjdk-devel
---> Running in f03e3153b123
Loaded plugins: ovl
Setting up Install Process
Package 10:centos-release-scl-7-4.el6.centos.noarch already installed and latest version
Package unzip-6.0-5.el6.x86_64 already installed and latest version
Resolving Dependencies...
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Step 6/11 : RUN source scl_source enable devtoolset-7 rh-python36 && gcc --version && python -V && pip install --upgrade pip
---> Running in 01a8eb8d7e57
gcc (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5)Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Python 3.6.12
The directory '/opt/app-root/src/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/opt/app-root/src/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pip
Downloading https://files.pythonhosted.org/packages/a4/6d/6463d49a933f547439d6b5b98b46af8742cc03ae83543e4d7688c2420f8b/pip-21.3.1-py3-none-any.whl (1.7MB)Installing collected packages: pip
Found existing installation: pip 9.0.1
Uninstalling pip-9.0.1:
Successfully uninstalled pip-9.0.1
Successfully installed pip-21.3.1
You are using pip version 21.3.1, however version 22.1.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
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Step 7/11 : RUN echo "echo 'using user scl_enable script'" >> ${APP_ROOT}/etc/scl_enable && echo "source scl_source enable rh-python36 devtoolset-7" >> ${APP_ROOT}/etc/scl_enable && echo "JAVA_HOME='/usr/lib/jvm/java-1.8.0-openjdk-1.8.0*'" >> ${APP_ROOT}/etc/scl_enable && echo "FULL_JAVA_HOME=$(readlink -f $JAVA_HOME)" >> ${APP_ROOT}/etc/scl_enable && echo "export JAVA_HOME=$FULL_JAVA_HOME" >> ${APP_ROOT}/etc/scl_enable && echo "export CC=/opt/rh/devtoolset-7/root/usr/bin/gcc" >> ${APP_ROOT}/etc/scl_enable && echo "export CXX=/opt/rh/devtoolset-7/root/usr/bin/g " >> ${APP_ROOT}/etc/scl_enable && echo "export EXTRA_BAZEL_ARGS='--verbose_failures'" >> ${APP_ROOT}/etc/scl_enable && echo "export BAZEL_LINKLIBS='-l%:libstdc .a'" >> ${APP_ROOT}/etc/scl_enable
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Step 8/11 : WORKDIR ${HOME}
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Step 9/11 : ENTRYPOINT ["container-entrypoint"]
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Step 10/11 : CMD ["base-usage"]
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Step 11/11 : USER 1001
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Successfully built 4d9f971b6549
Successfully tagged submod/bazel-build:latest[developer@localhost bazel-builds]$ docker run -it -v $(pwd):/opt/app-root/src -u 0 submod/bazel-build:latest /bin/bash
using user scl_enable script
bash-4.1# docker psbash: docker: command not found
bash-4.1# lscompile_bazel.sh Dockerfile README.md
bash-4.1# ./compile_bazel.shUsing built-in specs.COLLECT_GCC=gccCOLLECT_LTO_WRAPPER=/opt/rh/devtoolset-7/root/usr/libexec/gcc/x86_64-redhat-linux/7/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap --enable-languages=c,c ,fortran,lto --prefix=/opt/rh/devtoolset-7/root/usr --mandir=/opt/rh/devtoolset-7/root/usr/share/man --infodir=/opt/rh/devtoolset-7/root/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-gcc-major-version-only --enable-plugin --with-linker-hash-style=gnu --enable-initfini-array --with-default-libstdcxx-abi=gcc4-compatible --with-isl=/builddir/build/BUILD/gcc-7.3.1-20180303/obj-x86_64-redhat-linux/isl-install --enable-libmpx --with-mpc=/builddir/build/BUILD/gcc-7.3.1-20180303/obj-x86_64-redhat-linux/mpc-install --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC) Python 3.6.12
/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.275.b01-0.el6_10.x86_643.4.1
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