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rake-compiler / rake-compiler-dock

Easy to use and reliable cross compiler environment for building Windows, Linux, Mac and JRuby binary gems.
MIT License
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Default configuration for JRuby results in extra invocation #50

Closed JasonLunn closed 3 years ago

JasonLunn commented 3 years ago

Examples for JRuby usage that appear in the documentation result in an extra execution of the underlying docker command if the :rubyvm is set to :jruby. To reproduce, use the following trivial Rakefile:

require 'rake_compiler_dock'

task :foo do
  RakeCompilerDock.sh "echo $$", rubyvm: :jruby
end

rake foo will result in output similar to the following (your process numbers will vary):

rake-compiler-dock bash -c "echo $$"
315
rake-compiler-dock bash -c "echo $$"
316

The root cause is the default value ("x86-mingw32 x64-mingw32") of the :platform argument (defined in starter.rb). This default doesn't make sense for JRuby.

The workaround is to pass an arbitrary single-world value for :platform as a parameter to the invocation, e.g.:

require 'rake_compiler_dock'

task :foo do
  RakeCompilerDock.sh "echo $$", rubyvm: :jruby, platform: 'anything'
end

The fix will be to change the default value of :platform when the RubyVM is jruby.