[interop][SwiftToCxx] install _SwiftCxxInteroperability.h header as p…

lib/PrintAsClang/CMakeLists.txt

@@ -1,3 +1,37 @@
+set(datafiles
+    _SwiftCxxInteroperability.h
+)
+
+set(SWIFTLIB_DIR
+    "${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib/swift")
+set(output_dir "${SWIFTLIB_DIR}/swiftToCxx")
+
+add_custom_command(
+    OUTPUT "${output_dir}"
+    COMMAND ${CMAKE_COMMAND} "-E" "make_directory" "${output_dir}")
+
+set (outputs)
+
+foreach(input ${datafiles})
+  set(source "${CMAKE_CURRENT_SOURCE_DIR}/${input}")
+  set(dest "${output_dir}/${input}")
+  add_custom_command(OUTPUT
+                       "${output_dir}/${input}"
+                     DEPENDS
+                       "${CMAKE_CURRENT_SOURCE_DIR}/${input}"
+                     COMMAND
+                       "${CMAKE_COMMAND}" "-E" "copy" "${source}" "${dest}")
+  list(APPEND outputs "${output_dir}/${input}")
+endforeach()
+list(APPEND outputs "${output_dir}")
+
+add_custom_target("copy_swiftToCxx_shims"
+    DEPENDS "${output_dir}" "${outputs}"
+    COMMENT "Copying Swift to C++ shims to ${output_dir}")
+
+swift_install_in_component(FILES ${datafiles}
+                           DESTINATION "lib/swift/swiftToCxx"
+                           COMPONENT compiler)
 
 add_swift_host_library(swiftPrintAsClang STATIC
   ClangSyntaxPrinter.cpp
@@ -17,4 +51,7 @@ target_link_libraries(swiftPrintAsClang PRIVATE
   swiftIDE
   swiftIRGen)
 
+add_dependencies(swiftPrintAsClang
+  "copy_swiftToCxx_shims")
+
 set_swift_llvm_is_available(swiftPrintAsClang)

lib/PrintAsClang/PrintAsClang.cpp

@@ -107,14 +107,16 @@ static void writePrologue(raw_ostream &out, ASTContext &ctx,
         out << "#include <stdlib.h>\n";
         out << "#include <new>\n";
         out << "#include <type_traits>\n";
-        // FIXME: Look for the header in the SDK.
         out << "// Look for the C++ interop support header relative to clang's resource dir:\n";
-        out << "//  '<toolchain>/usr/lib/clang/<version>/include/../../../swift/shims'.\n";
-        out << "#if __has_include(<../../../swift/shims/_SwiftCxxInteroperability.h>)\n";
-        out << "#include <../../../swift/shims/_SwiftCxxInteroperability.h>\n";
-        out << "// Alternatively, allow user to find the header using additional include path into 'swift'.\n";
-        out << "#elif __has_include(<shims/_SwiftCxxInteroperability.h>)\n";
-        out << "#include <shims/_SwiftCxxInteroperability.h>\n";
+        out << "//  '<toolchain>/usr/lib/clang/<version>/include/../../../swift/swiftToCxx'.\n";
+        out << "#if __has_include(<../../../swift/swiftToCxx/_SwiftCxxInteroperability.h>)\n";
+        out << "#include <../../../swift/swiftToCxx/_SwiftCxxInteroperability.h>\n";
+        out << "#elif __has_include(<../../../../lib/swift/swiftToCxx/_SwiftCxxInteroperability.h>)\n";
+        out << "//  '<toolchain>/usr/local/lib/clang/<version>/include/../../../../lib/swift/swiftToCxx'.\n";
+        out << "#include <../../../../lib/swift/swiftToCxx/_SwiftCxxInteroperability.h>\n";
+        out << "// Alternatively, allow user to find the header using additional include path into '<toolchain>/lib/swift'.\n";
+        out << "#elif __has_include(<swiftToCxx/_SwiftCxxInteroperability.h>)\n";
+        out << "#include <swiftToCxx/_SwiftCxxInteroperability.h>\n";
         out << "#endif\n";
       },
       [&] {

stdlib/public/SwiftShims/swift/shims/CMakeLists.txt

@@ -22,7 +22,6 @@ set(sources
   UnicodeData.h
   Visibility.h
   _SwiftConcurrency.h
-  _SwiftCxxInteroperability.h
   _SwiftDistributed.h
 
   module.modulemap

stdlib/public/SwiftShims/swift/shims/module.modulemap

@@ -30,8 +30,3 @@ module SwiftOverlayShims {
   header "LibcOverlayShims.h"
   export *
 }
-
-module _SwiftCxxInteropShims {
-  header "_SwiftCxxInteroperability.h"
-  export *
-}

test/PrintAsCxx/empty.swift

@@ -33,12 +33,15 @@
 // CHECK-NEXT:  #include <new>
 // CHECK-NEXT:  #include <type_traits>
 // CHECK-NEXT:  // Look for the C++ interop support header relative to clang's resource dir:
-// CHECK-NEXT:  // '<toolchain>/usr/lib/clang/<version>/include/../../../swift/shims'.
-// CHECK-NEXT:  #if __has_include(<../../../swift/shims/_SwiftCxxInteroperability.h>)
-// CHECK-NEXT:  #include <../../../swift/shims/_SwiftCxxInteroperability.h>
-// CHECK-NEXT:  // Alternatively, allow user to find the header using additional include path into 'swift'.
-// CHECK-NEXT:  #elif __has_include(<shims/_SwiftCxxInteroperability.h>)
-// CHECK-NEXT:  #include <shims/_SwiftCxxInteroperability.h>
+// CHECK-NEXT:  //  '<toolchain>/usr/lib/clang/<version>/include/../../../swift/swiftToCxx'.
+// CHECK-NEXT:  #if __has_include(<../../../swift/swiftToCxx/_SwiftCxxInteroperability.h>)
+// CHECK-NEXT:  #include <../../../swift/swiftToCxx/_SwiftCxxInteroperability.h>
+// CHECK-NEXT:  #elif __has_include(<../../../../lib/swift/swiftToCxx/_SwiftCxxInteroperability.h>)
+// CHECK-NEXT:  //  '<toolchain>/usr/local/lib/clang/<version>/include/../../../../lib/swift/swiftToCxx'.
+// CHECK-NEXT:  #include <../../../../lib/swift/swiftToCxx/_SwiftCxxInteroperability.h>
+// CHECK-NEXT:  // Alternatively, allow user to find the header using additional include path into '<toolchain>/lib/swift'.
+// CHECK-NEXT:  #elif __has_include(<swiftToCxx/_SwiftCxxInteroperability.h>)
+// CHECK-NEXT:  #include <swiftToCxx/_SwiftCxxInteroperability.h>
 // CHECK-NEXT:  #endif
 // CHECK-NEXT:  #else
 // CHECK-NEXT:  #include <stdint.h>