CMake: Add targets to export set

In order to install a static archive, all libraries that feed into it
must be part of an export set, including object libraries. Installing an
object library without providing a `DESTINATION` field only generates an
interface library with the appropriate interface flags to ensure that
flags are correctly propagated in the generated SwiftCoreTargets.cmake.
This does not add any objects to the resulting installation.

Author: etcwilde

Runtimes/Core/CommandLineSupport/CMakeLists.txt

@@ -10,6 +10,8 @@ if(SwiftCore_ENABLE_COMMANDLINE_SUPPORT)
     swiftShims)
 
   if(NOT BUILD_SHARED_LIBS)
-    install(TARGETS swiftCommandLineSupport)
+    install(TARGETS swiftCommandLineSupport
+      EXPORT SwiftCoreTargets
+      COMPONENT SwiftCore_runtime)
   endif()
 endif()

Runtimes/Core/Demangling/CMakeLists.txt

@@ -49,5 +49,6 @@ endif()
 
 if(NOT BUILD_SHARED_LIBS)
   install(TARGETS swiftDemangling
+    EXPORT SwiftCoreTargets
     COMPONENT SwiftCore_runtime)
 endif()

Runtimes/Core/LLVMSupport/CMakeLists.txt

@@ -8,3 +8,9 @@ add_library(swiftLLVMSupport OBJECT
 target_compile_options(swiftLLVMSupport
   PRIVATE
     $<$<BOOL:${SwiftCore_HAS_ASL}>:-DSWIFT_STDLIB_HAS_ASL>)
+
+if(NOT BUILD_SHARED_LIBS)
+  install(TARGETS swiftLLVMSupport
+    EXPORT SwiftCoreTargets
+    COMPONENT SwiftCore_runtime)
+endif()

Runtimes/Core/Threading/CMakeLists.txt

@@ -13,3 +13,9 @@ target_link_libraries(swiftThreading PRIVATE swiftShims)
 #        to avoid pulling in headers from the compiler.
 target_include_directories(swiftThreading PRIVATE
   "${SwiftCore_SWIFTC_SOURCE_DIR}/include")
+
+if(NOT BUILD_SHARED_LIBS)
+  install(TARGETS swiftThreading
+    EXPORT SwiftCoreTargets
+    COMPONENT SwiftCore_runtime)
+endif()

Runtimes/Core/runtime/CMakeLists.txt

@@ -143,6 +143,12 @@ if(SwiftCore_ENABLE_OBJC_INTEROP)
     ObjCRuntimeGetImageNameFromClass.mm)
 endif()
 
+if(NOT BUILD_SHARED_LIBS)
+  install(TARGETS swiftRuntime
+    EXPORT SwiftCoreTargets
+    COMPONENT SwiftCore_runtime)
+endif()
+
 string(TOLOWER "${SwiftCore_OBJECT_FORMAT}x" SwiftCore_OBJECT_FORMAT)
 if("${SwiftCore_OBJECT_FORMAT}" STREQUAL "elfx")
   add_library(swiftrt OBJECT SwiftRT-ELF-WASM.cpp)
@@ -155,6 +161,8 @@ if("${SwiftCore_OBJECT_FORMAT}" STREQUAL "elfx")
   # The driver requires that swifrt.o is under `usr/lib/swift/<platform>/<arch>`
   # Regardless of settings
   install(FILES $<TARGET_OBJECTS:swiftrt>
+    EXPORT SwiftCoreTargets
+    COMPONENT SwiftCore_runtime
     DESTINATION "${CMAKE_INSTALL_LIBDIR}/swift/${SwiftCore_PLATFORM_SUBDIR}/${SwiftCore_ARCH_SUBDIR}"
     RENAME swiftrt.o)
 elseif("${SwiftCore_OBJECT_FORMAT}" STREQUAL "coffx")
@@ -169,6 +177,8 @@ elseif("${SwiftCore_OBJECT_FORMAT}" STREQUAL "coffx")
   add_library(swiftrt OBJECT SwiftRT-COFF.cpp)
   target_link_libraries(swiftrt PRIVATE swiftShims)
   install(FILES $<TARGET_OBJECTS:swiftrt>
+    EXPORT SwiftCoreTargets
+    COMPONENT SwiftCore_runtime
     DESTINATION "${CMAKE_INSTALL_LIBDIR}/swift/${SwiftCore_PLATFORM_SUBDIR}/${SwiftCore_ARCH_SUBDIR}"
     RENAME swiftrt.obj)
 elseif(NOT "${SwiftCore_OBJECT_FORMAT}" STREQUAL "x")

Runtimes/Core/stubs/CMakeLists.txt

@@ -58,3 +58,9 @@ if(APPLE)
                APPEND_STRING
                PROPERTY COMPILE_FLAGS "-fobjc-arc")
 endif()
+
+if(NOT BUILD_SHARED_LIBS)
+  install(TARGETS swiftStdlibStubs
+    EXPORT SwiftCoreTargets
+    COMPONENT SwiftCore_runtime)
+endif()