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//===--------------- LinkJob.swift - Swift Linking Job --------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import struct TSCBasic.AbsolutePath
import struct TSCBasic.RelativePath
extension Driver {
internal var relativeOutputFileForImage: RelativePath {
get throws {
if inputFiles.count == 1 && moduleOutputInfo.nameIsFallback && inputFiles[0].file != .standardInput {
return try RelativePath(validating: inputFiles[0].file.basenameWithoutExt)
}
let outputName =
toolchain.makeLinkerOutputFilename(moduleName: moduleOutputInfo.name,
type: linkerOutputType!)
return try RelativePath(validating: outputName)
}
}
/// Compute the output file for an image output.
internal var outputFileForImage: VirtualPath {
get throws {
return try useWorkingDirectory(relativeOutputFileForImage)
}
}
func useWorkingDirectory(_ relative: RelativePath) throws -> VirtualPath {
return try Driver.useWorkingDirectory(relative, workingDirectory)
}
static func useWorkingDirectory(_ relative: RelativePath, _ workingDirectory: AbsolutePath?) throws -> VirtualPath {
if let wd = workingDirectory {
return .absolute(try AbsolutePath(validating: relative.pathString, relativeTo: wd))
}
return .relative(relative)
}
/// Link the given inputs.
mutating func linkJob(inputs: [TypedVirtualPath]) throws -> Job {
var commandLine: [Job.ArgTemplate] = []
// Compute the final output file
let outputFile: VirtualPath
if let output = parsedOptions.getLastArgument(.o) {
outputFile = try VirtualPath(path: output.asSingle)
} else {
outputFile = try outputFileForImage
}
if let gccToolchain = parsedOptions.getLastArgument(.gccToolchain) {
commandLine.appendFlag(.XclangLinker)
commandLine.appendFlag("--gcc-toolchain=\(gccToolchain.asSingle)")
}
// Defer to the toolchain for platform-specific linking
let linkTool = try toolchain.addPlatformSpecificLinkerArgs(
to: &commandLine,
parsedOptions: &parsedOptions,
linkerOutputType: linkerOutputType!,
inputs: inputs,
outputFile: outputFile,
shouldUseInputFileList: shouldUseInputFileList,
lto: lto,
sanitizers: enabledSanitizers,
targetInfo: frontendTargetInfo
)
return Job(
moduleName: moduleOutputInfo.name,
kind: .link,
tool: linkTool,
commandLine: commandLine,
displayInputs: inputs,
inputs: inputs,
primaryInputs: [],
outputs: [.init(file: outputFile.intern(), type: .image)]
)
}
}
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