93 lines
3.2 KiB
Ruby
93 lines
3.2 KiB
Ruby
module Rscons
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module Builders
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# A default Rscons builder that knows how to link object files into a
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# shared library.
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class SharedLibrary < Builder
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Rscons.application.default_varset.append(
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'SHLIBPREFIX' => (RUBY_PLATFORM =~ /mingw/ ? '' : 'lib'),
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'SHLIBSUFFIX' => (RUBY_PLATFORM =~ /mingw/ ? '.dll' : '.so'),
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'SHLDFLAGS' => ['${LDFLAGS}', '-shared'],
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'SHLD' => nil,
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'SHLIBDIRPREFIX' => '-L',
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'SHLIBLINKPREFIX' => '-l',
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'SHLDCMD' => ['${SHLD}', '-o', '${_TARGET}', '${SHLDFLAGS}', '${_SOURCES}', '${SHLIBDIRPREFIX}${LIBPATH}', '${SHLIBLINKPREFIX}${LIBS}']
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)
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class << self
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# Return a set of build features that this builder provides.
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#
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# @return [Array<String>]
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# Set of build features that this builder provides.
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def features
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%w[shared]
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end
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end
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# Create an instance of the Builder to build a target.
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#
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# @param options [Hash]
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# Options.
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# @option options [String] :target
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# Target file name.
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# @option options [Array<String>] :sources
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# Source file name(s).
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# @option options [Environment] :env
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# The Environment executing the builder.
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# @option options [Hash,VarSet] :vars
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# Extra construction variables.
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def initialize(options)
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super(options)
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libprefix = @env.expand_varref("${SHLIBPREFIX}", @vars)
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unless File.basename(@target).start_with?(libprefix)
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@target = @target.sub!(%r{^(.*/)?([^/]+)$}, "\\1#{libprefix}\\2")
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end
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unless File.basename(@target)["."]
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@target += @env.expand_varref("${SHLIBSUFFIX}", @vars)
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end
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suffixes = @env.expand_varref(["${OBJSUFFIX}", "${LIBSUFFIX}"], @vars)
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# Register builders to build each source to an object file or library.
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@objects = @env.register_builds(@target, @sources, suffixes, @vars,
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features: %w[shared])
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end
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# Run the builder to produce a build target.
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#
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# @param options [Hash] Builder run options.
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#
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# @return [String,false]
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# Name of the target file on success or false on failure.
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def run(options)
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ld = @env.expand_varref("${SHLD}", @vars)
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ld = if ld != ""
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ld
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elsif @sources.find {|s| s.end_with?(*@env.expand_varref("${DSUFFIX}", @vars))}
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"${SHDC}"
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elsif @sources.find {|s| s.end_with?(*@env.expand_varref("${CXXSUFFIX}", @vars))}
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"${SHCXX}"
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else
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"${SHCC}"
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end
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@vars["_TARGET"] = @target
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@vars["_SOURCES"] = @objects
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@vars["SHLD"] = ld
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options[:sources] = @objects
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command = @env.build_command("${SHLDCMD}", @vars)
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standard_threaded_build("SHLD #{@target}", @target, command, @objects, @env, @cache)
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end
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# Finalize a build.
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#
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# @param options [Hash]
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# Finalize options.
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#
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# @return [String, nil]
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# The target name on success or nil on failure.
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def finalize(options)
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standard_finalize(options)
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end
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end
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end
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end
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