Merge pull request swiftlang#2996 from kateinoigakukun/katei/merge-private-libs

Fix autolink mechanism for static libraries on Linux

Author: millenomi

Sources/Foundation/CMakeLists.txt

@@ -160,6 +160,18 @@ set_target_properties(Foundation PROPERTIES
   Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift
   INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_BINARY_DIR}/swift)
 
+if(NOT BUILD_SHARED_LIBS)
+  target_compile_options(Foundation
+    PRIVATE
+      "SHELL:-Xfrontend -public-autolink-library -Xfrontend icui18n
+             -Xfrontend -public-autolink-library -Xfrontend BlocksRuntime")
+
+  # Merge private dependencies into single static objects archive
+  set_property(TARGET Foundation PROPERTY STATIC_LIBRARY_OPTIONS
+    $<TARGET_OBJECTS:CoreFoundation>
+    $<TARGET_OBJECTS:uuid>)
+endif()
+
 if(CMAKE_SYSTEM_NAME STREQUAL Windows)
   # NOTE: workaround for CMake which doesn't link in OBJECT libraries properly
   add_dependencies(Foundation CoreFoundationResources)

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

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