diff --git a/CMakeLists.txt b/CMakeLists.txt
index e3aa18097e..ffd49a919c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -47,6 +47,8 @@ if(HAS_LIBDISPATCH_API)
   find_package(dispatch CONFIG REQUIRED)
 endif()
 
+find_package(ICU COMPONENTS uc i18n REQUIRED)
+
 include(SwiftSupport)
 include(GNUInstallDirs)
 include(XCTest)
diff --git a/CoreFoundation/CMakeLists.txt b/CoreFoundation/CMakeLists.txt
index de106bc33a..3250606642 100644
--- a/CoreFoundation/CMakeLists.txt
+++ b/CoreFoundation/CMakeLists.txt
@@ -38,7 +38,6 @@ if(NOT CMAKE_SYSTEM_NAME STREQUAL Darwin)
       find_package(CURL REQUIRED)
     endif()
   endif()
-  find_package(ICU COMPONENTS uc i18n REQUIRED)
 endif()
 
 include(GNUInstallDirs)
diff --git a/Sources/Foundation/CMakeLists.txt b/Sources/Foundation/CMakeLists.txt
index f06166eb41..5743ffd53e 100644
--- a/Sources/Foundation/CMakeLists.txt
+++ b/Sources/Foundation/CMakeLists.txt
@@ -166,17 +166,27 @@ set_target_properties(Foundation PROPERTIES
   INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_BINARY_DIR}/swift)
 
 if(NOT BUILD_SHARED_LIBS)
-  add_dependencies(Foundation CoreFoundation uuid)
+  # ICU_I18N_LIBRARY is set by find_package(ICU) in the top level CMakeLists.txt
+  # It's an absolute path to the found library file
+  get_target_property(icui18n_path ICU::i18n IMPORTED_LOCATION)
+  get_filename_component(icu_i18n_basename "${icui18n_path}" NAME_WE)
+  get_filename_component(icu_i18n_dir "${icui18n_path}" DIRECTORY)
+  string(REPLACE "lib" "" icu_i18n_basename "${icu_i18n_basename}")
+
   target_compile_options(Foundation
     PRIVATE
-      "SHELL:-Xfrontend -public-autolink-library -Xfrontend icui18n
+      "SHELL:-Xfrontend -public-autolink-library -Xfrontend ${icu_i18n_basename}
              -Xfrontend -public-autolink-library -Xfrontend BlocksRuntime")
+  # ICU libraries are linked by absolute library path in this project,
+  # but -public-autolink-library forces to resolve library path by
+  # library search path given by -L, so add a directory of icui18n
+  # in the search path
+  target_link_directories(Foundation PUBLIC "${icu_i18n_dir}")
 
   # Merge private dependencies into single static objects archive
   set_property(TARGET Foundation PROPERTY STATIC_LIBRARY_OPTIONS
     $<TARGET_OBJECTS:CoreFoundation>
-    $<TARGET_OBJECTS:uuid>
-    $<TARGET_OBJECTS:BlocksRuntime>)
+    $<TARGET_OBJECTS:uuid>)
 endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL Windows)
diff --git a/Sources/Foundation/ISO8601DateFormatter.swift b/Sources/Foundation/ISO8601DateFormatter.swift
index 0764ca89fd..54de843b52 100644
--- a/Sources/Foundation/ISO8601DateFormatter.swift
+++ b/Sources/Foundation/ISO8601DateFormatter.swift
@@ -112,6 +112,13 @@ open class ISO8601DateFormatter : Formatter, NSSecureCoding {
             aCoder.encode(timeZone._nsObject, forKey: "NS.timeZone")
         }
     }
+
+    open override func copy(with zone: NSZone? = nil) -> Any {
+        let copied = ISO8601DateFormatter()
+        copied.timeZone = timeZone
+        copied.formatOptions = formatOptions
+        return copied
+    }
     
     public static var supportsSecureCoding: Bool { return true }
     
diff --git a/Sources/FoundationNetworking/CMakeLists.txt b/Sources/FoundationNetworking/CMakeLists.txt
index 164ef63b91..c1462d1dc0 100644
--- a/Sources/FoundationNetworking/CMakeLists.txt
+++ b/Sources/FoundationNetworking/CMakeLists.txt
@@ -64,6 +64,17 @@ target_link_libraries(FoundationNetworking
     CFURLSessionInterface
   PUBLIC
     Foundation)
+
+if(NOT BUILD_SHARED_LIBS)
+  target_compile_options(FoundationNetworking
+    PRIVATE
+      "SHELL:-Xfrontend -public-autolink-library -Xfrontend curl")
+
+  # Merge private dependencies into single static objects archive
+  set_property(TARGET FoundationNetworking PROPERTY STATIC_LIBRARY_OPTIONS
+    $<TARGET_OBJECTS:CFURLSessionInterface>)
+endif()
+
 set_target_properties(FoundationNetworking PROPERTIES
   INSTALL_RPATH "$ORIGIN"
   Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift
diff --git a/Sources/FoundationXML/CMakeLists.txt b/Sources/FoundationXML/CMakeLists.txt
index cbc1a95ba3..913c8f42b3 100644
--- a/Sources/FoundationXML/CMakeLists.txt
+++ b/Sources/FoundationXML/CMakeLists.txt
@@ -16,6 +16,17 @@ target_link_libraries(FoundationXML
     CFXMLInterface
   PUBLIC
     Foundation)
+
+if(NOT BUILD_SHARED_LIBS)
+  target_compile_options(FoundationXML
+    PRIVATE
+      "SHELL:-Xfrontend -public-autolink-library -Xfrontend xml2")
+
+  # Merge private dependencies into single static objects archive
+  set_property(TARGET FoundationXML PROPERTY STATIC_LIBRARY_OPTIONS
+    $<TARGET_OBJECTS:CFXMLInterface>)
+endif()
+
 set_target_properties(FoundationXML PROPERTIES
   INSTALL_RPATH "$ORIGIN"
   Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift
diff --git a/Tests/Foundation/Tests/TestISO8601DateFormatter.swift b/Tests/Foundation/Tests/TestISO8601DateFormatter.swift
index 6054794b7c..e1fdd2d614 100644
--- a/Tests/Foundation/Tests/TestISO8601DateFormatter.swift
+++ b/Tests/Foundation/Tests/TestISO8601DateFormatter.swift
@@ -326,6 +326,28 @@ class TestISO8601DateFormatter: XCTestCase {
             try fixture.assertLoadedValuesMatch(areEqual(_:_:))
         }
     }
+
+    func test_copy() throws {
+        let original = ISO8601DateFormatter()
+        original.timeZone = try XCTUnwrap(TimeZone(identifier: "GMT"))
+        original.formatOptions = [
+            .withInternetDateTime,
+            .withDashSeparatorInDate,
+            .withColonSeparatorInTime,
+            .withColonSeparatorInTimeZone,
+        ]
+
+        let copied = try XCTUnwrap(original.copy() as? ISO8601DateFormatter)
+        XCTAssertEqual(copied.timeZone, original.timeZone)
+        XCTAssertEqual(copied.formatOptions, original.formatOptions)
+
+        copied.timeZone = try XCTUnwrap(TimeZone(identifier: "JST"))
+        copied.formatOptions.insert(.withFractionalSeconds)
+        XCTAssertNotEqual(copied.timeZone, original.timeZone)
+        XCTAssertNotEqual(copied.formatOptions, original.formatOptions)
+        XCTAssertFalse(original.formatOptions.contains(.withFractionalSeconds))
+        XCTAssertTrue(copied.formatOptions.contains(.withFractionalSeconds))
+    }
     
     static var allTests : [(String, (TestISO8601DateFormatter) -> () throws -> Void)] {
         
@@ -335,6 +357,7 @@ class TestISO8601DateFormatter: XCTestCase {
             ("test_stringFromDateClass", test_stringFromDateClass),
             ("test_codingRoundtrip", test_codingRoundtrip),
             ("test_loadingFixtures", test_loadingFixtures),
+            ("test_copy", test_copy),
         ]
     }
 }