C/C++

Bazelle includes C/C++ support via the gazelle_cc extension from EngFlow.

Generated Rules

According to gazelle_cc documentation:

Source Pattern	Generated Rule
`.c`, `.cc`, `*.cpp` + headers	`cc_library`
Files with `main()` function	`cc_binary`
Test files	`cc_test`

Configuration

C/C++ support is provided by the upstream gazelle_cc extension. Refer to the gazelle_cc repository for:

Available directives
Configuration options
Header dependency resolution
Build customization

Dependencies

Setup

Configure gazelle_cc in your MODULE.bazel:

bazel_dep(name = "rules_cc", version = "0.2.16")
bazel_dep(name = "gazelle_cc", version = "0.5.0")

Common External Dependencies

# Google Test for testing
bazel_dep(name = "googletest", version = "1.14.0")

# Abseil for utilities
bazel_dep(name = "abseil-cpp", version = "20240116.0")

# Protocol Buffers
bazel_dep(name = "protobuf", version = "33.4")

Example

A typical C++ project structure:

src/
├── greeter/
│   ├── greeter.h
│   ├── greeter.cc
│   └── greeter_test.cc
└── main.cc

Limitations

Since C/C++ support comes from an external extension:

Behavior may differ between gazelle_cc versions
Directives and features depend on upstream
Complex configurations may need manual adjustment
Consult gazelle_cc issues for known limitations