From: "Eregon (Benoit Daloze) via ruby-core" Date: 2024-01-10T10:19:11+00:00 Subject: [ruby-core:116144] [Ruby master Feature#20152] mkmf / extconf: Add a proper way to not compile the extension Issue #20152 has been updated by Eregon (Benoit Daloze). > Another possibility would be if there is no Makefile created by extconf.rb, then RubyGems would not call make One problem with that though is it would not work on older RubyGems, so if any gem uses that it would fail on existing Ruby releases, which kinda makes it useless unfortunately (at least short term). That's why I like detecting the dummy makefile approach so much, because it's harmless on existing Ruby releases, it helps immediately for newer Ruby releases/newer RubyGems and even requires no changes in gems (which takes a while and might not work for older RubyGems). ---------------------------------------- Feature #20152: mkmf / extconf: Add a proper way to not compile the extension https://bugs.ruby-lang.org/issues/20152#change-106149 * Author: byroot (Jean Boussier) * Status: Open * Priority: Normal ---------------------------------------- ### Context There are various gems that ship with a native extension as a way to speedup part of the gem, but also ship with a pure Ruby version of these methods as a fallback. So they only want to compile the extension if the platform supports it, and if not, just fallback to the slightly slower Ruby version. Right now users rely on one of two hacks to do this. Either they create an empty Makefile, but then still depend on `make` being available, or publish platform specific packages without any extension in them. Examples: - [`bootsnap` skip compilation if not on MRI or TruffleRuby](https://github.com/Shopify/bootsnap/blob/070151f1305f23102365d6b4476a91c02dead35a/ext/bootsnap/extconf.rb) - [`erb` has an extension for MRI but then need to publish a `java` version of the gem that doesn't actually contain Java code, just to skip compilation on JRuby](https://github.com/ruby/erb/issues/52) - [`hiredis-client` skips the compilation for Windows and non-MRI rubies](https://github.com/redis-rb/redis-client/blob/1ab081c1d0e47df5d55e011c9390c70b2eef6731/hiredis-client/ext/redis_client/hiredis/extconf.rb#L10-L17) ### Feature It would be very useful to have some proper first class API to skip compiling the extension. Something like: ```ruby require "mkmf" if RUBY_ENGINE != "ruby" || RUBY_PLATFORM.match?(/mswin/) skip_compilation else # ... end ``` cc @k0kubun @headius -- https://bugs.ruby-lang.org/ ______________________________________________ ruby-core mailing list -- ruby-core@ml.ruby-lang.org To unsubscribe send an email to ruby-core-leave@ml.ruby-lang.org ruby-core info -- https://ml.ruby-lang.org/mailman3/postorius/lists/ruby-core.ml.ruby-lang.org/