Issues

• WMO Eager Compilation

  swiftlang/swift-build#1895 · Filter by author chiragramani opened on Oct 26, 2026
  1

• 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

• 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

• 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

• Swift Build crashes on Linux during build planning: DispatchIO on pipes hits a libdispatch use-after-free

  swiftlang/swift-build#1786 · Filter by author FranzBusch opened on Sep 24, 2026
  1

• 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
  2

• 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

• Generated resource bundle accessor traps on WASI by going through Bundle.main

  swiftlang/swift-build#1757 · Filter by author tothambrus11 opened on Sep 20, 2026

• swiftbuild: binaryTarget xcframework Headers/module.modulemap collide in shared include/ (headers-path sibling of #1242, not fixed by #1244)

  swiftlang/swift-build#1746 · Filter by author Par-B opened on Sep 17, 2026

• Toolsets are disabled for Android

  android
  swiftlang/swift-build#1704 · Filter by author finagolfin opened on Sep 4, 2026

• All cross-compilation SDK bundles are incorrectly passing -sysroot to swiftc along with the correct -sdk/-resource-dir flags

  android
  swiftlang/swift-build#1703 · Filter by author finagolfin opened on Sep 4, 2026

• [FileCopyTaskAction] Injected codeless-framework stubs retain the linker's temporary signing identifier

  swiftlang/swift-build#1663 · Filter by author Brett-Best opened on Aug 24, 2026

• Windows: Touch task on a bundle directory copies its contents into the working directory

  swiftlang/swift-build#1641 · Filter by author tothambrus11 opened on Aug 15, 2026
  1

• Using the new build system causes the second build to fail with "unable to resolve module dependency"

  swiftlang/swift-build#1638 · Filter by author itingliu opened on Aug 14, 2026
  2

• Swift SDKs won't compile for non-matching target arch with swiftbuild system in 6.4

  swiftlang/swift-build#1574 · Filter by author xtremekforever opened on Jul 28, 2026
  

• Regression compared to native: Using -warnings-as-errors & -suppress-warnings results in build error

  swiftlang/swift-build#1512 · Filter by author MahdiBM opened on Jul 6, 2026
  1

• SWBBuildServer returns -32001 "No build description" for requests in the post-handshake window before async build description generation completes

  swiftlang/swift-build#1509 · Filter by author silentswordfish opened on Jul 5, 2026