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mruby-bin-mirb: add MRUBY_MIRB_READLINE to control readline library selection
addresses #6626 where users building portable binaries need explicit control over readline detection instead of auto-detection. MRUBY_MIRB_READLINE values: auto (default) - auto-detect: try readline, then edit, then linenoise readline, gnu - force GNU readline only edit, libedit - force libedit only linenoise - force linenoise only none, off, false, disabled - use plain input mode (no readline) close #6626 Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
Yukihiro "Matz" Matsumoto
@@ -1,54 +1,138 @@
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# Environment Variable Configuration:
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#
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# MRUBY_MIRB_READLINE - Control which readline library mirb uses:
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# auto (default) - Auto-detect: try readline, then edit, then linenoise
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# readline, gnu - Force GNU readline only
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# edit, libedit - Force libedit only
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# linenoise - Force linenoise only
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# none, off, false, disabled - Use plain input mode (no readline)
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#
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# Example:
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# MRUBY_MIRB_READLINE=none rake
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# MRUBY_MIRB_READLINE=linenoise rake
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MRuby::Gem::Specification.new('mruby-bin-mirb') do |spec|
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spec.license = 'MIT'
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spec.author = 'mruby developers'
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spec.summary = 'mirb command'
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if spec.build.cc.search_header_path 'readline/readline.h'
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spec.cc.defines << "MRB_USE_READLINE"
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spec.cc.defines << "MRB_READLINE_HEADER='<readline/readline.h>'"
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spec.cc.defines << "MRB_READLINE_HISTORY='<readline/history.h>'"
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if spec.build.cc.search_header_path 'termcap.h'
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if MRUBY_BUILD_HOST_IS_CYGWIN || MRUBY_BUILD_HOST_IS_OPENBSD
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if spec.build.cc.search_header_path 'termcap.h'
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if MRUBY_BUILD_HOST_IS_CYGWIN then
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spec.linker.libraries << 'ncurses'
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else
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spec.linker.libraries << 'termcap'
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# Allow user to override readline detection via environment variable
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readline_mode = (ENV['MRUBY_MIRB_READLINE'] || 'auto').downcase
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case readline_mode
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when 'auto'
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# Auto-detect: try readline, then edit, then linenoise (default behavior)
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if spec.build.cc.search_header_path 'readline/readline.h'
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spec.cc.defines << "MRB_USE_READLINE"
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spec.cc.defines << "MRB_READLINE_HEADER='<readline/readline.h>'"
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spec.cc.defines << "MRB_READLINE_HISTORY='<readline/history.h>'"
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if spec.build.cc.search_header_path 'termcap.h'
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if MRUBY_BUILD_HOST_IS_CYGWIN || MRUBY_BUILD_HOST_IS_OPENBSD
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if spec.build.cc.search_header_path 'termcap.h'
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if MRUBY_BUILD_HOST_IS_CYGWIN then
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spec.linker.libraries << 'ncurses'
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else
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spec.linker.libraries << 'termcap'
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end
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end
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end
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end
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if RUBY_PLATFORM.include?('netbsd')
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spec.linker.libraries << 'edit'
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else
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spec.linker.libraries << 'readline'
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if RUBY_PLATFORM.include?('darwin')
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# Workaround to build with Homebrew's readline on Mac (#4537)
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lib_path = spec.build.cc.header_search_paths.find do |include_path|
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lib_path = File.expand_path("#{include_path}/../lib")
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break lib_path if File.exist?("#{lib_path}/libreadline.dylib") ||
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File.exist?("#{lib_path}/libreadline.a")
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end
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spec.linker.library_paths << lib_path if lib_path
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elsif spec.build.cc.search_header_path 'curses.h'
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spec.linker.libraries << 'ncurses'
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if spec.build.cc.search_header_path 'term.h'
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spec.linker.libraries << 'tinfo'
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end
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elsif spec.build.cc.search_header_path 'ncursesw/curses.h'
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spec.linker.libraries << 'ncursesw'
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if spec.build.cc.search_header_path 'ncursesw/term.h'
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spec.linker.libraries << 'tinfow'
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end
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end
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end
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elsif spec.build.cc.search_header_path 'edit/readline/readline.h'
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spec.cc.defines << "MRB_USE_READLINE"
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spec.cc.defines << "MRB_READLINE_HEADER='<edit/readline/readline.h>'"
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spec.cc.defines << "MRB_READLINE_HISTORY='<edit/readline/history.h>'"
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spec.linker.libraries << "edit"
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elsif spec.build.cc.search_header_path 'linenoise.h'
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spec.cc.defines << "MRB_USE_LINENOISE"
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end
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when 'readline', 'gnu'
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# Force GNU readline only
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if spec.build.cc.search_header_path 'readline/readline.h'
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spec.cc.defines << "MRB_USE_READLINE"
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spec.cc.defines << "MRB_READLINE_HEADER='<readline/readline.h>'"
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spec.cc.defines << "MRB_READLINE_HISTORY='<readline/history.h>'"
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if spec.build.cc.search_header_path 'termcap.h'
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if MRUBY_BUILD_HOST_IS_CYGWIN || MRUBY_BUILD_HOST_IS_OPENBSD
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if spec.build.cc.search_header_path 'termcap.h'
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if MRUBY_BUILD_HOST_IS_CYGWIN then
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spec.linker.libraries << 'ncurses'
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else
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spec.linker.libraries << 'termcap'
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end
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end
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end
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end
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if RUBY_PLATFORM.include?('netbsd')
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spec.linker.libraries << 'edit'
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else
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spec.linker.libraries << 'readline'
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if RUBY_PLATFORM.include?('darwin')
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lib_path = spec.build.cc.header_search_paths.find do |include_path|
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lib_path = File.expand_path("#{include_path}/../lib")
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break lib_path if File.exist?("#{lib_path}/libreadline.dylib") ||
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File.exist?("#{lib_path}/libreadline.a")
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end
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spec.linker.library_paths << lib_path if lib_path
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elsif spec.build.cc.search_header_path 'curses.h'
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spec.linker.libraries << 'ncurses'
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if spec.build.cc.search_header_path 'term.h'
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spec.linker.libraries << 'tinfo'
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end
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elsif spec.build.cc.search_header_path 'ncursesw/curses.h'
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spec.linker.libraries << 'ncursesw'
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if spec.build.cc.search_header_path 'ncursesw/term.h'
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spec.linker.libraries << 'tinfow'
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end
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end
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end
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end
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if RUBY_PLATFORM.include?('netbsd')
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spec.linker.libraries << 'edit'
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else
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spec.linker.libraries << 'readline'
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if RUBY_PLATFORM.include?('darwin')
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# Workaround to build with Homebrew's readline on Mac (#4537)
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lib_path = spec.build.cc.header_search_paths.find do |include_path|
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lib_path = File.expand_path("#{include_path}/../lib")
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break lib_path if File.exist?("#{lib_path}/libreadline.dylib") ||
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File.exist?("#{lib_path}/libreadline.a")
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end
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spec.linker.library_paths << lib_path if lib_path
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elsif spec.build.cc.search_header_path 'curses.h'
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spec.linker.libraries << 'ncurses'
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if spec.build.cc.search_header_path 'term.h'
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spec.linker.libraries << 'tinfo'
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end
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elsif spec.build.cc.search_header_path 'ncursesw/curses.h'
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spec.linker.libraries << 'ncursesw'
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if spec.build.cc.search_header_path 'ncursesw/term.h'
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spec.linker.libraries << 'tinfow'
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end
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end
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when 'edit', 'libedit'
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# Force libedit only
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if spec.build.cc.search_header_path 'edit/readline/readline.h'
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spec.cc.defines << "MRB_USE_READLINE"
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spec.cc.defines << "MRB_READLINE_HEADER='<edit/readline/readline.h>'"
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spec.cc.defines << "MRB_READLINE_HISTORY='<edit/readline/history.h>'"
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spec.linker.libraries << "edit"
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end
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elsif spec.build.cc.search_header_path 'edit/readline/readline.h'
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spec.cc.defines << "MRB_USE_READLINE"
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spec.cc.defines << "MRB_READLINE_HEADER='<edit/readline/readline.h>'"
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spec.cc.defines << "MRB_READLINE_HISTORY='<edit/readline/history.h>'"
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spec.linker.libraries << "edit"
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elsif spec.build.cc.search_header_path 'linenoise.h'
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spec.cc.defines << "MRB_USE_LINENOISE"
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when 'linenoise'
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# Force linenoise only
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if spec.build.cc.search_header_path 'linenoise.h'
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spec.cc.defines << "MRB_USE_LINENOISE"
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end
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when 'none', 'off', 'false', 'disabled'
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# Disable readline - use plain input mode
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else
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fail "Invalid MRUBY_MIRB_READLINE='#{readline_mode}'. " \
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"Valid values: auto, readline, gnu, edit, libedit, linenoise, none, off, false, disabled"
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end
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spec.bins = %w(mirb)
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