diff --git a/Fixtures/Miscellaneous/DoNotFilterLinkerDiagnostics/Package.swift b/Fixtures/Miscellaneous/DoNotFilterLinkerDiagnostics/Package.swift
index 45efb831fa1..636e93fcc67 100644
--- a/Fixtures/Miscellaneous/DoNotFilterLinkerDiagnostics/Package.swift
+++ b/Fixtures/Miscellaneous/DoNotFilterLinkerDiagnostics/Package.swift
@@ -8,9 +8,7 @@ let package = Package(
         .executableTarget(
             name: "DoNotFilterLinkerDiagnostics",
             linkerSettings: [
-                .linkedLibrary("z"),
-                .unsafeFlags(["-lz"]),
-                // should produce: ld: warning: ignoring duplicate libraries: '-lz'
+                .unsafeFlags(["-Lfoobar"]),
             ]
         ),
     ]
diff --git a/Sources/Build/BuildDescription/ProductBuildDescription.swift b/Sources/Build/BuildDescription/ProductBuildDescription.swift
index 2b662984c8a..88fa223eee9 100644
--- a/Sources/Build/BuildDescription/ProductBuildDescription.swift
+++ b/Sources/Build/BuildDescription/ProductBuildDescription.swift
@@ -182,6 +182,12 @@ package final class ProductBuildDescription: SPMBuildCore.ProductBuildDescriptio
 
         var isLinkingStaticStdlib = false
         let triple = self.buildParameters.triple
+
+        // radar://112671586 supress unnecessary warnings
+        if triple.isMacOSX {
+            args += ["-Xlinker", "-no_warn_duplicate_libraries"]
+        }
+
         switch derivedProductType {
         case .macro:
             throw InternalError("macro not supported") // should never be reached
diff --git a/Sources/XCBuildSupport/PIFBuilder.swift b/Sources/XCBuildSupport/PIFBuilder.swift
index 153fd73a58a..dffbc7cbe9f 100644
--- a/Sources/XCBuildSupport/PIFBuilder.swift
+++ b/Sources/XCBuildSupport/PIFBuilder.swift
@@ -685,6 +685,9 @@ final class PackagePIFProjectBuilder: PIFProjectBuilder {
             impartedSettings[.OTHER_LDFLAGS, default: ["$(inherited)"]].append("-lc++")
         }
 
+        // radar://112671586 supress unnecessary warnings
+        impartedSettings[.OTHER_LDFLAGS, default: ["$(inherited)"]].append("-Wl,-no_warn_duplicate_libraries")
+
         addSources(target.sources, to: pifTarget)
 
         // Handle the target's dependencies (but don't link against them).
diff --git a/Tests/BuildTests/BuildPlanTests.swift b/Tests/BuildTests/BuildPlanTests.swift
index a4c79b412df..bace9c92a9d 100644
--- a/Tests/BuildTests/BuildPlanTests.swift
+++ b/Tests/BuildTests/BuildPlanTests.swift
@@ -807,6 +807,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
             "@\(buildPath.appending(components: "exe.product", "Objects.LinkFileList"))",
@@ -1220,6 +1221,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-dead_strip",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
@@ -1310,6 +1312,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
             "@\(buildPath.appending(components: "exe.product", "Objects.LinkFileList"))",
@@ -1469,6 +1472,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
             "@\(buildPath.appending(components: "exe.product", "Objects.LinkFileList"))",
@@ -1659,6 +1663,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
             "@\(buildPath.appending(components: "exe.product", "Objects.LinkFileList"))",
@@ -1813,6 +1818,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
             "@\(buildPath.appending(components: "exe.product", "Objects.LinkFileList"))",
@@ -2061,6 +2067,7 @@ final class BuildPlanTests: XCTestCase {
                 buildPath.appending(components: "PkgPackageTests.xctest", "Contents", "MacOS", "PkgPackageTests")
                     .pathString,
                 "-module-name", "PkgPackageTests",
+                "-Xlinker", "-no_warn_duplicate_libraries",
                 "-Xlinker", "-bundle",
                 "-Xlinker", "-rpath", "-Xlinker", "@loader_path/../../../",
                 "@\(buildPath.appending(components: "PkgPackageTests.product", "Objects.LinkFileList"))",
@@ -2159,6 +2166,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-dead_strip",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
@@ -2523,6 +2531,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
             "@\(buildPath.appending(components: "exe.product", "Objects.LinkFileList"))",
@@ -2670,6 +2679,7 @@ final class BuildPlanTests: XCTestCase {
             "-o", buildPath.appending(components: "Foo").pathString,
             "-module-name", "Foo",
             "-lBar-Baz",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
             "@\(buildPath.appending(components: "Foo.product", "Objects.LinkFileList"))",
@@ -2685,6 +2695,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "libBar-Baz.dylib").pathString,
             "-module-name", "Bar_Baz",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-library",
             "-Xlinker", "-install_name", "-Xlinker", "@rpath/libBar-Baz.dylib",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
@@ -2837,6 +2848,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "liblib.dylib").pathString,
             "-module-name", "lib",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-library",
             "-Xlinker", "-install_name", "-Xlinker", "@rpath/liblib.dylib",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
@@ -2976,6 +2988,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "liblib.dylib").pathString,
             "-module-name", "lib",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-library",
             "-Xlinker", "-install_name", "-Xlinker", "@rpath/liblib.dylib",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
@@ -2990,6 +3003,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "-Xlinker", "-rpath", "-Xlinker", "@loader_path",
             "@\(buildPath.appending(components: "exe.product", "Objects.LinkFileList"))",
@@ -6087,6 +6101,7 @@ final class BuildPlanTests: XCTestCase {
             "-L", buildPath.pathString,
             "-o", buildPath.appending(components: "exe").pathString,
             "-module-name", "exe",
+            "-Xlinker", "-no_warn_duplicate_libraries",
             "-emit-executable",
             "@\(buildPath.appending(components: "exe.product", "Objects.LinkFileList"))",
             "-Xlinker", "-rpath", "-Xlinker", "/fake/path/lib/swift-5.5/macosx",
diff --git a/Tests/BuildTests/BuildSystemDelegateTests.swift b/Tests/BuildTests/BuildSystemDelegateTests.swift
index 2251dde6d44..4e44a42dafe 100644
--- a/Tests/BuildTests/BuildSystemDelegateTests.swift
+++ b/Tests/BuildTests/BuildSystemDelegateTests.swift
@@ -25,7 +25,7 @@ final class BuildSystemDelegateTests: XCTestCase {
             try XCTSkipIf(true, "test is only supported on macOS")
             #endif
             let (fullLog, _) = try executeSwiftBuild(fixturePath)
-            XCTAssertTrue(fullLog.contains("ld: warning: ignoring duplicate libraries: '-lz'"), "log didn't contain expected linker diagnostics")
+            XCTAssertTrue(fullLog.contains("ld: warning: search path 'foobar' not found"), "log didn't contain expected linker diagnostics")
         }
     }
 
diff --git a/Tests/XCBuildSupportTests/PIFBuilderTests.swift b/Tests/XCBuildSupportTests/PIFBuilderTests.swift
index f1171d8c706..c03033ecb9f 100644
--- a/Tests/XCBuildSupportTests/PIFBuilderTests.swift
+++ b/Tests/XCBuildSupportTests/PIFBuilderTests.swift
@@ -1312,6 +1312,7 @@ class PIFBuilderTests: XCTestCase {
                             "-fmodule-map-file=$(OBJROOT)/GeneratedModuleMaps/$(PLATFORM_NAME)/FooLib1.modulemap"
                         ])
                         XCTAssertEqual(settings[.OTHER_LDRFLAGS], [])
+                        XCTAssertEqual(settings[.OTHER_LDFLAGS], ["$(inherited)", "-Wl,-no_warn_duplicate_libraries"])
                     }
                 }
 
@@ -1384,7 +1385,7 @@ class PIFBuilderTests: XCTestCase {
                             "-fmodule-map-file=$(OBJROOT)/GeneratedModuleMaps/$(PLATFORM_NAME)/FooLib2.modulemap"
                         ])
                         XCTAssertEqual(settings[.OTHER_LDRFLAGS], [])
-                        XCTAssertEqual(settings[.OTHER_LDFLAGS], ["$(inherited)", "-lc++"])
+                        XCTAssertEqual(settings[.OTHER_LDFLAGS], ["$(inherited)", "-lc++", "-Wl,-no_warn_duplicate_libraries"])
                         XCTAssertEqual(settings[.OTHER_SWIFT_FLAGS], [
                             "$(inherited)",
                             "-Xcc", "-fmodule-map-file=$(OBJROOT)/GeneratedModuleMaps/$(PLATFORM_NAME)/FooLib2.modulemap"
@@ -1463,6 +1464,7 @@ class PIFBuilderTests: XCTestCase {
                             "-fmodule-map-file=$(OBJROOT)/GeneratedModuleMaps/$(PLATFORM_NAME)/BarLib.modulemap"
                         ])
                         XCTAssertEqual(settings[.OTHER_LDRFLAGS], [])
+                        XCTAssertEqual(settings[.OTHER_LDFLAGS], ["$(inherited)", "-Wl,-no_warn_duplicate_libraries"])
                         XCTAssertEqual(settings[.OTHER_SWIFT_FLAGS], [
                             "$(inherited)",
                             "-Xcc", "-fmodule-map-file=$(OBJROOT)/GeneratedModuleMaps/$(PLATFORM_NAME)/BarLib.modulemap"
@@ -2406,7 +2408,7 @@ class PIFBuilderTests: XCTestCase {
                     target.checkImpartedBuildSettings { settings in
                         XCTAssertEqual(settings[.GCC_PREPROCESSOR_DEFINITIONS], nil)
                         XCTAssertEqual(settings[.HEADER_SEARCH_PATHS], nil)
-                        XCTAssertEqual(settings[.OTHER_LDFLAGS], ["$(inherited)", "-lz"])
+                        XCTAssertEqual(settings[.OTHER_LDFLAGS], ["$(inherited)", "-Wl,-no_warn_duplicate_libraries", "-lz"])
                         XCTAssertEqual(settings[.OTHER_SWIFT_FLAGS], nil)
                     }
                 }