Bazel Tips and Tricks

Table of Contents

• Install Bazel
• Bazel Tips
• Bazel build
• –compilation_mode (fastbuild|opt|dbg) (-c)
• Bazel Query
• Bazel test
• Common params
• :all VS :*
• IntelliJ Bazel Plugin

Install Bazel

sudo apt-get install bazel
sudo apt-get install --only-upgrade bazel

Bazel Tips

• Use bash or zsh command completion

Bazel build

• –keep_going
• –nobuild

–compilation_mode (fastbuild|opt|dbg) (-c)

• fastbuild means build as fast as possible: generate minimal debugging information (-gmlt -Wl,-S), and don’t optimize. This is the default. Note: -DNDEBUG will not be set.
• opt means build with optimization enabled and with assert() calls disabled (-O2 -DNDEBUG). Debugging information will not be generated in opt mode.

Bazel Query

• list all build targets available in the current directory
  • bazel query :* –output=build

Bazel test

• Use --test_filter to run a single test class or test method
  • -test_filter=TestClass, -test_filter=TestClass#testMethod
• --java_debug: causes the Java virtual machine of a java test to wait for a connection from a JDWP-compliant debugger (such as jdb) before starting the test
• --cache_test_results=no
• --test_arg

Common params

• --jvmopt="-Xmx10G"

:all VS :*

• :all: Match all rules in the specified packages.
• :* or :all-targets: Match all targets (rules and files) in the specified packages.
• //foo/...:all or //foo/...: Matches all rules in all packages beneath directory ‘foo’.

IntelliJ Bazel Plugin

IntelliJ Bazel Plugin - The latest version may be not supported yet. We may have to download the older version - Check what versions are supported for IntelliJ IDEA

How to manage and remove directories from project in IntelliJ? - Use the Bazel > Project > Open Project View File menu.