Issues

• Linker discovery fails on Linux when ld prints its banner in another language

  swiftlang/swift-build#1934 · Filter by author PigLardLord opened on Nov 7, 2026

• Why is .swift-version currently set to 6.2.0 on the main branch?

  swiftlang/swift-build#1933 · Filter by author yimajo opened on Nov 6, 2026

• builtin-copy (PbxCp._copyFile) copies with a read/write loop; use clonefile on APFS

  swiftlang/swift-build#1932 · Filter by author Dharin-shah opened on Nov 6, 2026

• Swift 6.4.1 & 6.4.2 still fails to compile

  swiftlang/swift-build#1931 · Filter by author purpln opened on Nov 5, 2026

• C/C++ compilations ignore CPLUS_INCLUDE_PATH and CPATH on Linux

  swiftlang/swift-build#1915 · Filter by author tayloraswift opened on Nov 2, 2026

• Shared package targets are duplicated across dynamic products with no diagnostic, and two related failures in diamond resolution

  swiftlang/swift-build#1912 · Filter by author piercifani opened on Nov 1, 2026

• [CAS] SwiftDriverTaskAction doesn't create the directory for -dependency-scan-serialize-diagnostics-path

  swiftlang/swift-build#1911 · Filter by author vsarunas opened on Oct 31, 2026

• Every Static Linux SDK link warns "argument unused during compilation: '-rdynamic'"

  swiftlang/swift-build#1910 · Filter by author quantizor opened on Oct 31, 2026

• Clean release builds of a package with a C target are not byte-identical on ELF: Clang module signatures carry module map timestamps

  swiftlang/swift-build#1909 · Filter by author quantizor opened on Oct 31, 2026

• A package build with an App Intent produces no Metadata.appintents

  swiftlang/swift-build#1907 · Filter by author quantizor opened on Oct 31, 2026

• WMO Eager Compilation

  swiftlang/swift-build#1895 · Filter by author chiragramani opened on Oct 26, 2026
  2

• Automatic merged binaries no longer merge SwiftPM dynamic library products (Xcode 27 / PIF from SwiftPM)

  swiftlang/swift-build#1894 · Filter by author andrewjmeier opened on Oct 26, 2026

• Products built by SwiftPM with Swift Build record the deployment target as the SDK version in LC_BUILD_VERSION

  swiftlang/swift-build#1887 · Filter by author mpellicc opened on Oct 23, 2026
  1

• Windows: swift test -c release runs no tests; the optimizer removes the test runner's call to the test anchor

  swiftlang/swift-build#1884 · Filter by author alexanderuv opened on Oct 21, 2026

• Windows: swift build spends tens of minutes in [Pre-planning 1 / N] on GitHub-hosted runners

  swiftlang/swift-build#1883 · Filter by author ben-zene opened on Oct 21, 2026

• SwiftPM projects fail to build on Linux with Swift 6.4

  swiftlang/swift-build#1873 · Filter by author theoparis opened on Oct 19, 2026

• SwiftBuild (Windows): Touch task uses file-only 'copy /b <dir> +,,' on staged directory resource bundle of a git dependency and fails with 'Access is denied'

  windows
  swiftlang/swift-build#1901 · Filter by author rayman-zhao opened on Oct 18, 2026
  1

• Release builds fail on Windows: builtin-copy tries to strip !<arch> resource files via unavailable cctools strip

  swiftlang/swift-build#1869 · Filter by author rayman-zhao opened on Oct 16, 2026

• swift-build compiles independent test targets one at a time

  swiftlang/swift-build#1868 · Filter by author wadetregaskis opened on Oct 15, 2026

• Eager-linking stubs are skipped for multiplatform frameworks

  swiftlang/swift-build#1864 · Filter by author ksuther opened on Oct 13, 2026

• build-for-testing reports 'X is missing a dependency on Y' for the dynamic variant of a package target that declares the dependency

  swiftlang/swift-build#1801 · Filter by author tadeucbm opened on Sep 28, 2026
  2

• Cached build plan keeps the Metal Toolchain's old cryptex mount path; swift build fails after a remount/reboot

  swiftlang/swift-build#1798 · Filter by author cybercussion opened on Sep 28, 2026

• SwiftPM Swift Build child jobs do not retain a confined TMPDIR

  swiftlang/swift-build#1784 · Filter by author henrymodisett opened on Sep 24, 2026

• Diamond resolution emits LC_LOAD_DYLIB for empty dynamic products that native builds link statically

  swiftlang/swift-build#1778 · Filter by author vsarunas opened on Sep 23, 2026
  4

• xcconfig propagation to SwiftPM package targets depends on how it's attached

  swiftlang/swift-build#1758 · Filter by author Ryu0118 opened on Sep 20, 2026