ruby.git/lib/rubygems/ext/ext_conf_builder.rb, branch v4.0.4

[ruby/rubygems] Pass down value of `BUNDLE_JOBS` to RubyGems before compiling:

2025-12-16T04:21:49+00:00

- ### Problem

  Since https://github.com/ruby/rubygems/pull/9131, we are now
  compiling make rules simultaneously. The number of jobs
  is equal to the number of processors.
  This may be problematic for some users as they want to control
  this value.

  ### Solution

  The number of jobs passed to `make` will now be equal to the
  `BUNDLE_JOBS` value.

  ### Side note

  It's also worth to note that since Bundler installs gems in
  parallel, we may end up running multiple `make -j` in parallel
  which would cause exhaust the number of processors we have.
  This problem can be fixed by implementing a GNU jobserver, which I
  plan to do. But I felt that this would be too much change in one PR.

https://github.com/ruby/rubygems/commit/d51995deb9

[ruby/rubygems] Also use String#include? for RUBY_PLATFORM

2025-11-29T02:06:53+00:00

https://github.com/ruby/rubygems/commit/5fd95f38d3

Fixup with mswin and nmake build for -j flag

2025-11-29T01:02:25+00:00

[ruby/rubygems] Use String#include? with suggested by Performance/StringInclude cop

2025-11-28T23:43:24+00:00

https://github.com/ruby/rubygems/commit/fdd3419144

nmake didn't support -j flag

2025-11-28T22:06:24+00:00

[ruby/rubygems] Add `MAKEFLAGS=-j` by default before compiling:

2025-11-28T21:01:44+00:00

- Depending on the native extension, it can greatly reduce compilation
  time when executing recipes simultaneously.

  For example on Prism:

  ```
  # Before

  time gem install prism
  Building native extensions. This could take a while...
  Successfully installed prism-1.6.0
  1 gem installed

  gem install prism  3.61s user 0.80s system 95% cpu 4.595 total
  ```

  ```
  # After

  time MAKEFLAGS="-j" gem install prism
  Building native extensions. This could take a while...
  Successfully installed prism-1.6.0
  1 gem installed

  MAKEFLAGS="-j" gem install prism  4.47s user 1.27s system 246% cpu 2.330 total
  ```

  I don't think adding `-j` as a default is harmful, but I'm admitedly
  not very knowledgable when it comes to compiler.

https://github.com/ruby/rubygems/commit/61340081c6

Co-authored-by: Aaron Patterson

[rubygems/rubygems] Use spaces around optional parameter values

2025-08-18T03:31:51+00:00

https://github.com/rubygems/rubygems/commit/b58829a868

[rubygems/rubygems] Don't worry about missing Makefile.

2025-08-18T03:31:51+00:00

https://github.com/rubygems/rubygems/commit/0e92346d88

[rubygems/rubygems] Disable `install_extension_in_lib` when cross-compiling

2024-06-18T00:59:36+00:00

https://github.com/rubygems/rubygems/commit/643e154f32

[rubygems/rubygems] Add `--target-rbconfig` option to `gem install` and `gem update` commands

2024-06-18T00:59:35+00:00

This patch adds `--target-rbconfig` option to specify the rbconfig.rb file
for the deployment target platform. This is useful when cross-compiling
gems. At the moment, this option is only available for `extconf.rb`-based
extensions.

https://github.com/rubygems/rubygems/commit/cf2843f7a2