Add fallback to check for ./build_config.rb before using default.rb

Summary of Changes

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This pull request enhances the mruby build system by introducing a more intuitive way to load project-specific build configurations. It automates the discovery of a local build_config.rb file, thereby improving developer convenience and reducing manual setup steps for mruby projects.

Highlights

Configuration Loading: I've modified the mruby_config_path method within lib/mruby/build.rb to introduce a new fallback mechanism for locating the build configuration file. Specifically, if the MRUBY_CONFIG or CONFIG environment variables are not set, the system will now first check for a build_config.rb file in the current directory.
Developer Experience Improvement: This change aims to streamline the development workflow for mruby users who frequently work with multiple projects and consolidate mruby source code. It eliminates the need to manually specify MRUBY_CONFIG=./build_config.rb when running rake, making the build process more convenient and less error-prone.

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Comment on lines +63 to +67

		if File.file?("./build_config.rb")
		path = "./build_config.rb"
		else
		path = "#{MRUBY_ROOT}/build_config/default.rb"
		end

buty4649 deleted the improve/build-config-file-detection branch

July 31, 2025 03:55

Merged