rebaze

Automate your migration from CMake and Gradle to Bazel.

Install

# Add the tap and install
brew tap albertocavalcante/tap
brew install albertocavalcante/tap/rebaze

# Migrate your project
rebaze migrate /path/to/your/project

# Requires GitHub token for private repo access
export HOMEBREW_GITHUB_API_TOKEN="$(gh auth token)"

# Add the tap and install nightly (prebuilt binaries)
brew tap albertocavalcante/tap
brew install albertocavalcante/tap/rebaze-nightly

# Migrate your project
rebaze migrate /path/to/your/project

# Clone and build with Bazel
git clone https://github.com/albertocavalcante/rebaze && cd rebaze
bazel build //crates/rebaze-cli:rebaze

# Run directly
bazel run //crates/rebaze-cli:rebaze -- migrate /path/to/your/project

That’s it. Your CMake or Gradle project now has Bazel build files.

Features

Fast Migration

Analyze and migrate your project in seconds. No manual BUILD file writing required.

Smart Dependencies

Automatically maps CMake find_package() and Gradle dependencies to Bazel targets.

Configurable

Customize mappings, rules, and strategies via rebaze.toml configuration.

Hermetic Builds

Optional source builds with rules_foreign_cc for fully reproducible builds.

Supported Build Systems

CMakeSupported

Full parser + cmake-file-api integration

GradleSupported

Groovy and Kotlin DSL

MavenPlanned

Detection only

Before: CMakeLists.txt

cmake_minimum_required(VERSION 3.14)
project(myapp)

find_package(ZLIB REQUIRED)
add_library(mylib src/lib.cpp)
target_link_libraries(mylib ZLIB::ZLIB)
add_executable(myapp src/main.cpp)
target_link_libraries(myapp mylib)

After: Run rebaze migrate .

module(name = "myapp", version = "0.1.0")
bazel_dep(name = "rules_cc", version = "0.1.1")
bazel_dep(name = "zlib", version = "1.3.1")

load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")

cc_library(
    name = "mylib",
    srcs = ["src/lib.cpp"],
    deps = ["@zlib"],
)

cc_binary(
    name = "myapp",
    srcs = ["src/main.cpp"],
    deps = [":mylib"],
)

Before: build.gradle

plugins {
    id 'java'
}
dependencies {
    implementation 'com.google.guava:guava:32.1.3-jre'
    testImplementation 'junit:junit:4.13.2'
}

After: Run rebaze migrate .

module(name = "myapp", version = "0.1.0")
bazel_dep(name = "rules_java", version = "7.4.0")
bazel_dep(name = "rules_jvm_external", version = "6.0")

load("@rules_java//java:defs.bzl", "java_binary", "java_library")

java_library(
    name = "lib",
    srcs = glob(["src/main/java/**/*.java"]),
    deps = ["@maven//:com_google_guava_guava"],
)