Convert Ruby C function definition in ruby.h to Go source and dump to dist/.

• Ruby
• Go
• ctags
  • macOS: brew install universal-ctags
  • Ubuntu: apt-get install -y universal-ctags
• goimports
  • go install golang.org/x/tools/cmd/goimports@latest

Output binding to /ruby/ using Ruby available in current context (recommended)

bundle exec rake ruby_h_to_go

Customize Ruby version to be used, output directory.

./exe/ruby_h_to_go

• -H, --header-file : ruby header file. (default: "#{RbConfig::CONFIG["rubyhdrdir"]}/ruby.h")
• -I, --include-path : include paths (default: [RbConfig::CONFIG["rubyarchhdrdir"], RbConfig::CONFIG["rubyhdrdir"]])
• --dist-dir : dist dir for auto-generated Go code (default: ../../ruby/)
• -t, --temp-file : temporary dist preprocessed ruby header file (default: "#{Dir.tmpdir}/ruby_preprocessed.h")