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273d41b9e3
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.
cf2843f7a2
50 lines
1.2 KiB
Ruby
50 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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require "rbconfig"
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##
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# A TargetConfig is a wrapper around an RbConfig object that provides a
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# consistent interface for querying configuration for *deployment target
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# platform*, where the gem being installed is intended to run on.
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#
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# The TargetConfig is typically created from the RbConfig of the running Ruby
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# process, but can also be created from an RbConfig file on disk for cross-
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# compiling gems.
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class Gem::TargetRbConfig
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attr_reader :path
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def initialize(rbconfig, path)
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@rbconfig = rbconfig
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@path = path
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end
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##
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# Creates a TargetRbConfig for the platform that RubyGems is running on.
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def self.for_running_ruby
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new(::RbConfig, nil)
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end
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##
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# Creates a TargetRbConfig from the RbConfig file at the given path.
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# Typically used for cross-compiling gems.
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def self.from_path(rbconfig_path)
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namespace = Module.new do |m|
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# Load the rbconfig.rb file within a new anonymous module to avoid
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# conflicts with the rbconfig for the running platform.
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Kernel.load rbconfig_path, m
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end
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rbconfig = namespace.const_get(:RbConfig)
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new(rbconfig, rbconfig_path)
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end
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##
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# Queries the configuration for the given key.
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def [](key)
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@rbconfig::CONFIG[key]
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end
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end
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