41 lines
1.9 KiB
Diff
41 lines
1.9 KiB
Diff
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diff --git a/Sources/SwiftDriver/Jobs/GenericUnixToolchain+LinkerSupport.swift b/Sources/SwiftDriver/Jobs/GenericUnixToolchain+LinkerSupport.swift
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index a4a735f498..381522cc1f 100644
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--- a/Sources/SwiftDriver/Jobs/GenericUnixToolchain+LinkerSupport.swift
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+++ b/Sources/SwiftDriver/Jobs/GenericUnixToolchain+LinkerSupport.swift
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@@ -10,6 +10,7 @@
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//
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//===----------------------------------------------------------------------===//
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+import Foundation
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import SwiftOptions
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import func TSCBasic.lookupExecutablePath
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@@ -120,7 +121,18 @@
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// just using `clang` and avoid a dependency on the C++ runtime.
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let clangTool: Tool =
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parsedOptions.hasArgument(.enableExperimentalCxxInterop) ? .clangxx : .clang
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- var clangPath = try getToolPath(clangTool)
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+
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+ // For Nix, prefer linking using the wrapped Nixpkgs clang, instead of using
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+ // the unwrapped clang packaged with swift. The latter is unable to link, but
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+ // we still want to use it for other purposes (clang importer).
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+ var clangPath: AbsolutePath
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+ if let binPath = try? AbsolutePath(validating: "@clang@/bin"),
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+ let tool = lookupExecutablePath(filename: parsedOptions.hasArgument(.enableExperimentalCxxInterop)
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+ ? "clang++" : "clang",
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+ searchPaths: [binPath]) {
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+ clangPath = tool
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+ } else {
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+ clangPath = try getToolPath(clangTool)
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if let toolsDirPath = parsedOptions.getLastArgument(.toolsDirectory) {
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// FIXME: What if this isn't an absolute path?
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let toolsDir = try AbsolutePath(validating: toolsDirPath.asSingle)
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@@ -136,6 +148,7 @@
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commandLine.appendFlag("-B")
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commandLine.appendPath(toolsDir)
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}
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+ } // Nix
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// Executables on Linux get -pie
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if targetTriple.os == .linux && linkerOutputType == .executable {
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