Automating Your Build Pipeline: Integrating bin2header in CMake

Integrating bin2header into your CMake build pipeline allows you to automatically convert binary files (like images, shaders, or audio) into C/C++ header files. This embeds the assets directly into your executable, eliminating the need to manage external files at runtime. The Direct Solution

To automate this, use CMake’s add_custom_command to run bin2header during the build, and add_custom_target to ensure it runs before compiling your main application.

cmake_minimum_required(VERSION 3.12) project(EmbedAssetsExample) # 1. Define paths for the raw asset and the generated header set(RAW_ASSET “\({CMAKE_CURRENT_SOURCE_DIR}/assets/image.png") set(GENERATED_HEADER "\){CMAKE_CURRENT_BINARY_DIR}/generated/image.h”) # 2. Create the custom command to run bin2header add_custom_command( OUTPUT “\({GENERATED_HEADER}" COMMAND bin2header "\){RAW_ASSET}” “\({GENERATED_HEADER}" DEPENDS "\){RAW_ASSET}” COMMENT “Converting binary asset to C++ header using bin2header” ) # 3. Define your executable and include the generated header as a source add_executable(MyApplication main.cpp “\({GENERATED_HEADER}") # 4. Let CMake know where to find the generated header target_include_directories(MyApplication PRIVATE "\){CMAKE_CURRENT_BINARY_DIR}/generated”) Use code with caution. Key Benefits

Zero Runtime File Missing Errors: Assets are baked directly into the final binary.

Automatic Rebuilds: CMake tracks the raw file asset. If you update the original asset, CMake automatically reruns bin2header on the next build.

Cross-Platform Consistency: The generated header works identically across Windows, macOS, and Linux without worrying about relative file paths. Best Practices

Use Binary Directory: Always output generated headers to CMAKE_CURRENT_BINARY_DIR to keep your source directory clean.

Check Availability: Wrap the command in find_program(BIN2HEADER_EXE bin2header) to ensure the tool is installed on the host system before executing the build.