构建用于测试的 ruby c-extension 的推荐方法答案

【问题标题】：Recommended way to build ruby c-extension for testing构建用于测试的 ruby c-extension 的推荐方法
【发布时间】：2012-11-05 22:39:05
【问题描述】：

我正在使用

构建一个 rubygem

gem build $gemname.gemspec && gem install $gemname-0.0.1.gem

但是，这似乎不是测试 gem 的最佳方法，因为它将其移出本地环境并进入 rubygems 路径。

是否建议使用构建 gem

cd ext/$gemname && ruby extconf.rb && make

？还是有更好的做法？

【问题讨论】：

标签： ruby ruby-c-extension

【解决方案1】：

我猜像下面这样的 Rakefile 也可以工作（并且比上面的命令更容易）。但是，这对于测试是否必要并不明显。

require 'rake/testtask'
require 'rake/clean'

NAME = 'hola'

# rule to build the extension: this says
# that the extension should be rebuilt
# after any change to the files in ext
file "lib/#{NAME}/#{NAME}.so" =>
    Dir.glob("ext/#{NAME}/*{.rb,.c}") do
  Dir.chdir("ext/#{NAME}") do
    # this does essentially the same thing
    # as what RubyGems does
    ruby "extconf.rb"
    sh "make"
  end
  cp "ext/#{NAME}/#{NAME}.so", "lib/#{NAME}"
end

# make the :test task depend on the shared
# object, so it will be built automatically
# before running the tests
task :test => "lib/#{NAME}/#{NAME}.so"

# use 'rake clean' and 'rake clobber' to
# easily delete generated files
CLEAN.include('ext/**/*{.o,.log,.so}')
CLEAN.include('ext/**/Makefile')
CLOBBER.include('lib/**/*.so')

# the same as before
Rake::TestTask.new do |t|
  t.libs << 'test'
end

desc "Run tests"
task :default => :test

【讨论】：