swiftlang · drexin · Sep 3, 2020 · Jul 28, 2020
diff --git a/include/swift/Frontend/Frontend.h b/include/swift/Frontend/Frontend.h
@@ -128,7 +128,8 @@ class CompilerInvocation {
   bool parseArgs(ArrayRef<const char *> Args, DiagnosticEngine &Diags,
                  SmallVectorImpl<std::unique_ptr<llvm::MemoryBuffer>>
                      *ConfigurationFileBuffers = nullptr,
-                 StringRef workingDirectory = {});
+                 StringRef workingDirectory = {},
+                 StringRef mainExecutablePath = {});
 
   /// Sets specific options based on the given serialized Swift binary data.
   ///
@@ -213,8 +214,11 @@ class CompilerInvocation {
   /// Computes the runtime resource path relative to the given Swift
   /// executable.
   static void computeRuntimeResourcePathFromExecutablePath(
-      StringRef mainExecutablePath,
-      llvm::SmallString<128> &runtimeResourcePath);
+      StringRef mainExecutablePath, bool shared,
+      llvm::SmallVectorImpl<char> &runtimeResourcePath);
+
+  /// Appends `lib/swift[_static]` to the given path
+  static void appendSwiftLibDir(llvm::SmallVectorImpl<char> &path, bool shared);
 
   void setSDKPath(const std::string &Path);
 

diff --git a/include/swift/Frontend/FrontendOptions.h b/include/swift/Frontend/FrontendOptions.h
@@ -301,6 +301,11 @@ class FrontendOptions {
   /// Indicates whether the action will immediately run code.
   static bool isActionImmediate(ActionType);
 
+  /// Determines whether the static or shared resource folder is used.
+  /// When set to `true`, the default resource folder will be set to
+  /// '.../lib/swift', otherwise '.../lib/swift_static'.
+  bool UseSharedResourceFolder = true;
+
   /// \return true if action only parses without doing other compilation steps.
   static bool shouldActionOnlyParse(ActionType);
 

diff --git a/include/swift/Option/FrontendOptions.td b/include/swift/Option/FrontendOptions.td
@@ -719,4 +719,8 @@ def target_sdk_version : Separate<["-"], "target-sdk-version">,
 def target_variant_sdk_version : Separate<["-"], "target-variant-sdk-version">,
   HelpText<"The version of target variant SDK used for compilation">;
 
+
+def use_static_resource_dir
+  : Flag<["-"], "use-static-resource-dir">,
+    HelpText<"Use resources in the static resource directory">;
 } // end let Flags = [FrontendOption, NoDriverOption, HelpHidden]
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
@@ -2248,6 +2248,13 @@ bool Driver::handleImmediateArgs(const ArgList &Args, const ToolChain &TC) {
       commandLine.push_back(resourceDirArg->getValue());
     }
 
+    if (Args.hasFlag(options::OPT_static_executable,
+                     options::OPT_no_static_executable, false) ||
+        Args.hasFlag(options::OPT_static_stdlib, options::OPT_no_static_stdlib,
+                     false)) {
+      commandLine.push_back("-use-static-resource-dir");
+    }
+
     std::string executable = getSwiftProgramPath();
 
     // FIXME: This bypasses mechanisms like -v and -###. (SR-12119)

diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
@@ -22,6 +22,7 @@
 #include "swift/Driver/Compilation.h"
 #include "swift/Driver/Driver.h"
 #include "swift/Driver/Job.h"
+#include "swift/Frontend/Frontend.h"
 #include "swift/Option/Options.h"
 #include "clang/Basic/Version.h"
 #include "clang/Driver/Util.h"
@@ -523,6 +524,13 @@ ToolChain::constructInvocation(const CompileJobAction &job,
     Arguments.push_back("-track-system-dependencies");
   }
 
+  if (context.Args.hasFlag(options::OPT_static_executable,
+                           options::OPT_no_static_executable, false) ||
+      context.Args.hasFlag(options::OPT_static_stdlib,
+                           options::OPT_no_static_stdlib, false)) {
+    Arguments.push_back("-use-static-resource-dir");
+  }
+
   context.Args.AddLastArg(
       Arguments,
       options::
@@ -1256,24 +1264,18 @@ void ToolChain::getClangLibraryPath(const ArgList &Args,
 void ToolChain::getResourceDirPath(SmallVectorImpl<char> &resourceDirPath,
                                    const llvm::opt::ArgList &args,
                                    bool shared) const {
-  // FIXME: Duplicated from CompilerInvocation, but in theory the runtime
-  // library link path and the standard library module import path don't
-  // need to be the same.
   if (const Arg *A = args.getLastArg(options::OPT_resource_dir)) {
     StringRef value = A->getValue();
     resourceDirPath.append(value.begin(), value.end());
   } else if (!getTriple().isOSDarwin() && args.hasArg(options::OPT_sdk)) {
     StringRef value = args.getLastArg(options::OPT_sdk)->getValue();
     resourceDirPath.append(value.begin(), value.end());
-    llvm::sys::path::append(resourceDirPath, "usr", "lib",
-                            shared ? "swift" : "swift_static");
+    llvm::sys::path::append(resourceDirPath, "usr");
+    CompilerInvocation::appendSwiftLibDir(resourceDirPath, shared);
   } else {
     auto programPath = getDriver().getSwiftProgramPath();
-    resourceDirPath.append(programPath.begin(), programPath.end());
-    llvm::sys::path::remove_filename(resourceDirPath); // remove /swift
-    llvm::sys::path::remove_filename(resourceDirPath); // remove /bin
-    llvm::sys::path::append(resourceDirPath, "lib",
-                            shared ? "swift" : "swift_static");
+    CompilerInvocation::computeRuntimeResourcePathFromExecutablePath(
+        programPath, shared, resourceDirPath);
   }
 
   StringRef libSubDir = getPlatformNameForTriple(getTriple());

diff --git a/lib/Frontend/ArgsToFrontendOptionsConverter.cpp b/lib/Frontend/ArgsToFrontendOptionsConverter.cpp
@@ -187,6 +187,7 @@ bool ArgsToFrontendOptionsConverter::convert(
   Opts.EnableSourceImport |= Args.hasArg(OPT_enable_source_import);
   Opts.ImportUnderlyingModule |= Args.hasArg(OPT_import_underlying_module);
   Opts.EnableIncrementalDependencyVerifier |= Args.hasArg(OPT_verify_incremental_dependencies);
+  Opts.UseSharedResourceFolder = !Args.hasArg(OPT_use_static_resource_dir);
 
   computeImportObjCHeaderOptions();
   computeImplicitImportModuleNames();

diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
@@ -39,16 +39,25 @@ swift::CompilerInvocation::CompilerInvocation() {
 }
 
 void CompilerInvocation::computeRuntimeResourcePathFromExecutablePath(
-    StringRef mainExecutablePath, llvm::SmallString<128> &runtimeResourcePath) {
-  runtimeResourcePath.assign(mainExecutablePath);
+    StringRef mainExecutablePath, bool shared,
+    llvm::SmallVectorImpl<char> &runtimeResourcePath) {
+  runtimeResourcePath.append(mainExecutablePath.begin(),
+                             mainExecutablePath.end());
+
   llvm::sys::path::remove_filename(runtimeResourcePath); // Remove /swift
   llvm::sys::path::remove_filename(runtimeResourcePath); // Remove /bin
-  llvm::sys::path::append(runtimeResourcePath, "lib", "swift");
+  appendSwiftLibDir(runtimeResourcePath, shared);
+}
+
+void CompilerInvocation::appendSwiftLibDir(llvm::SmallVectorImpl<char> &path,
+                                      bool shared) {
+  llvm::sys::path::append(path, "lib", shared ? "swift" : "swift_static");
 }
 
 void CompilerInvocation::setMainExecutablePath(StringRef Path) {
   llvm::SmallString<128> LibPath;
-  computeRuntimeResourcePathFromExecutablePath(Path, LibPath);
+  computeRuntimeResourcePathFromExecutablePath(
+      Path, FrontendOpts.UseSharedResourceFolder, LibPath);
   setRuntimeResourcePath(LibPath.str());
 
   llvm::SmallString<128> DiagnosticDocsPath(Path);
@@ -1597,11 +1606,10 @@ static bool ParseMigratorArgs(MigratorOptions &Opts,
 }
 
 bool CompilerInvocation::parseArgs(
-    ArrayRef<const char *> Args,
-    DiagnosticEngine &Diags,
+    ArrayRef<const char *> Args, DiagnosticEngine &Diags,
     SmallVectorImpl<std::unique_ptr<llvm::MemoryBuffer>>
         *ConfigurationFileBuffers,
-    StringRef workingDirectory) {
+    StringRef workingDirectory, StringRef mainExecutablePath) {
   using namespace options;
 
   if (Args.empty())
@@ -1632,6 +1640,10 @@ bool CompilerInvocation::parseArgs(
     return true;
   }
 
+  if (!mainExecutablePath.empty()) {
+    setMainExecutablePath(mainExecutablePath);
+  }
+
   ParseModuleInterfaceArgs(ModuleInterfaceOpts, ParsedArgs);
   SaveModuleInterfaceArgs(ModuleInterfaceOpts, FrontendOpts, ParsedArgs, Diags);
 

diff --git a/lib/FrontendTool/FrontendTool.cpp b/lib/FrontendTool/FrontendTool.cpp
@@ -2078,17 +2078,18 @@ int swift::performFrontend(ArrayRef<const char *> Args,
   }
 
   CompilerInvocation Invocation;
-  std::string MainExecutablePath = llvm::sys::fs::getMainExecutable(Argv0,
-                                                                    MainAddr);
-  Invocation.setMainExecutablePath(MainExecutablePath);
 
   SmallString<128> workingDirectory;
   llvm::sys::fs::current_path(workingDirectory);
 
+  std::string MainExecutablePath =
+      llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
+
   // Parse arguments.
   SmallVector<std::unique_ptr<llvm::MemoryBuffer>, 4> configurationFileBuffers;
   if (Invocation.parseArgs(Args, Instance->getDiags(),
-                           &configurationFileBuffers, workingDirectory)) {
+                           &configurationFileBuffers, workingDirectory,
+                           MainExecutablePath)) {
     return finishDiagProcessing(1, /*verifierEnabled*/ false);
   }
 

diff --git a/stdlib/cmake/modules/AddSwiftStdlib.cmake b/stdlib/cmake/modules/AddSwiftStdlib.cmake
@@ -628,6 +628,9 @@ function(_add_swift_target_library_single target name)
                         "${SWIFTLIB_SINGLE_multiple_parameter_options}"
                         ${ARGN})
 
+  translate_flag(${SWIFTLIB_SINGLE_STATIC} "STATIC"
+                 SWIFTLIB_SINGLE_STATIC_keyword)
+
   # Determine macCatalyst build flavor
   get_maccatalyst_build_flavor(maccatalyst_build_flavor
     "${SWIFTLIB_SINGLE_SDK}" "${SWIFTLIB_SINGLE_MACCATALYST_BUILD_FLAVOR}")
@@ -757,6 +760,7 @@ function(_add_swift_target_library_single target name)
       ${SWIFTLIB_SINGLE_IS_STDLIB_CORE_keyword}
       ${SWIFTLIB_SINGLE_IS_SDK_OVERLAY_keyword}
       ${embed_bitcode_arg}
+      ${SWIFTLIB_SINGLE_STATIC_keyword}
       INSTALL_IN_COMPONENT "${SWIFTLIB_SINGLE_INSTALL_IN_COMPONENT}"
       MACCATALYST_BUILD_FLAVOR "${SWIFTLIB_SINGLE_MACCATALYST_BUILD_FLAVOR}")
   add_swift_source_group("${SWIFTLIB_SINGLE_EXTERNAL_SOURCES}")

diff --git a/stdlib/cmake/modules/SwiftSource.cmake b/stdlib/cmake/modules/SwiftSource.cmake
@@ -29,7 +29,7 @@ function(handle_swift_sources
     dependency_sibgen_target_out_var_name
     sourcesvar externalvar name)
   cmake_parse_arguments(SWIFTSOURCES
-      "IS_MAIN;IS_STDLIB;IS_STDLIB_CORE;IS_SDK_OVERLAY;EMBED_BITCODE"
+      "IS_MAIN;IS_STDLIB;IS_STDLIB_CORE;IS_SDK_OVERLAY;EMBED_BITCODE;STATIC"
       "SDK;ARCHITECTURE;INSTALL_IN_COMPONENT;MACCATALYST_BUILD_FLAVOR"
       "DEPENDS;COMPILE_FLAGS;MODULE_NAME"
       ${ARGN})
@@ -41,6 +41,8 @@ function(handle_swift_sources
                  IS_SDK_OVERLAY_arg)
   translate_flag(${SWIFTSOURCES_EMBED_BITCODE} "EMBED_BITCODE"
                  EMBED_BITCODE_arg)
+  translate_flag(${SWIFTSOURCES_STATIC} "STATIC"
+                 STATIC_arg)
 
   if(SWIFTSOURCES_IS_MAIN)
     set(SWIFTSOURCES_INSTALL_IN_COMPONENT never_install)
@@ -278,13 +280,15 @@ endfunction()
 #     [MODULE_NAME]                     # The module name.
 #     [INSTALL_IN_COMPONENT]            # Install produced files.
 #     [EMBED_BITCODE]                   # Embed LLVM bitcode into the .o files
+#     [STATIC]                          # Also write .swiftmodule etc. to static
+#                                       # resource folder
 #     )
 function(_compile_swift_files
     dependency_target_out_var_name dependency_module_target_out_var_name
     dependency_sib_target_out_var_name dependency_sibopt_target_out_var_name
     dependency_sibgen_target_out_var_name)
   cmake_parse_arguments(SWIFTFILE
-    "IS_MAIN;IS_STDLIB;IS_STDLIB_CORE;IS_SDK_OVERLAY;EMBED_BITCODE"
+    "IS_MAIN;IS_STDLIB;IS_STDLIB_CORE;IS_SDK_OVERLAY;EMBED_BITCODE;STATIC"
     "OUTPUT;MODULE_NAME;INSTALL_IN_COMPONENT;MACCATALYST_BUILD_FLAVOR"
     "SOURCES;FLAGS;DEPENDS;SDK;ARCHITECTURE;OPT_FLAGS;MODULE_DIR"
     ${ARGN})
@@ -448,8 +452,11 @@ function(_compile_swift_files
   endforeach()
 
   set(module_file)
+  set(module_file_static)
   set(module_doc_file)
+  set(module_doc_file_static)
   set(interface_file)
+  set(interface_file_static)
 
   if(NOT SWIFTFILE_IS_MAIN)
     # Determine the directory where the module file should be placed.
@@ -464,17 +471,28 @@ function(_compile_swift_files
     list(APPEND swift_flags "-parse-as-library")
 
     set(module_base "${module_dir}/${SWIFTFILE_MODULE_NAME}")
+
+    set(module_dir_static "${SWIFTSTATICLIB_DIR}/${library_subdir}")
+    set(module_base_static "${module_dir_static}/${SWIFTFILE_MODULE_NAME}")
+
     set(module_triple ${SWIFT_SDK_${library_subdir_sdk}_ARCH_${SWIFTFILE_ARCHITECTURE}_MODULE})
     if(SWIFTFILE_SDK IN_LIST SWIFT_APPLE_PLATFORMS OR
        SWIFTFILE_SDK STREQUAL "MACCATALYST")
       set(specific_module_dir "${module_base}.swiftmodule")
       set(module_base "${module_base}.swiftmodule/${module_triple}")
+
+      set(specific_module_dir_static "${module_base_static}.swiftmodule")
+      set(module_base_static "${module_base_static}.swiftmodule/${module_triple}")
     else()
       set(specific_module_dir)
+      set(specific_module_dir_static)
     endif()
     set(module_file "${module_base}.swiftmodule")
     set(module_doc_file "${module_base}.swiftdoc")
 
+    set(module_file_static "${module_base_static}.swiftmodule")
+    set(module_doc_file_static "${module_base_static}.swiftdoc")
+
     # FIXME: These don't really belong inside the swiftmodule, but there's not
     # an obvious alternate place to put them.
     set(sib_file "${module_base}.Onone.sib")
@@ -483,6 +501,7 @@ function(_compile_swift_files
 
     if(SWIFT_ENABLE_MODULE_INTERFACES)
       set(interface_file "${module_base}.swiftinterface")
+      set(interface_file_static "${module_base_static}.swiftinterface")
       list(APPEND swift_module_flags
            "-emit-module-interface-path" "${interface_file}")
     endif()
@@ -510,10 +529,20 @@ function(_compile_swift_files
       swift_install_in_component(DIRECTORY "${specific_module_dir}"
                                  DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift/${library_subdir}"
                                  COMPONENT "${SWIFTFILE_INSTALL_IN_COMPONENT}")
+      if(SWIFTFILE_STATIC)
+        swift_install_in_component(DIRECTORY "${specific_module_dir_static}"
+                                   DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift_static/${library_subdir}"
+                                   COMPONENT "${SWIFTFILE_INSTALL_IN_COMPONENT}")
+      endif()
     else()
       swift_install_in_component(FILES ${module_outputs}
                                  DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift/${library_subdir}"
                                  COMPONENT "${SWIFTFILE_INSTALL_IN_COMPONENT}")
+      if(SWIFTFILE_STATIC)
+        swift_install_in_component(FILES ${module_outputs}
+                                   DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift_static/${library_subdir}"
+                                   COMPONENT "${SWIFTFILE_INSTALL_IN_COMPONENT}")
+      endif()
     endif()
 
     # macCatalyst zippered module setup
@@ -563,8 +592,10 @@ function(_compile_swift_files
   endif()
 
   set(module_outputs "${module_file}" "${module_doc_file}")
+  set(module_outputs_static "${module_file_static}" "${module_doc_file_static}")
   if(interface_file)
     list(APPEND module_outputs "${interface_file}")
+    list(APPEND module_outputs_static "${interface_file_static}")
   endif()
 
   if(SWIFTFILE_SDK IN_LIST SWIFT_APPLE_PLATFORMS)
@@ -573,10 +604,23 @@ function(_compile_swift_files
                                COMPONENT "${SWIFTFILE_INSTALL_IN_COMPONENT}"
                                OPTIONAL
                                PATTERN "Project" EXCLUDE)
+
+    if(SWIFTFILE_STATIC)
+      swift_install_in_component(DIRECTORY "${specific_module_dir_static}"
+                                 DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift_static/${library_subdir}"
+                                 COMPONENT "${SWIFTFILE_INSTALL_IN_COMPONENT}"
+                                 OPTIONAL
+                                 PATTERN "Project" EXCLUDE)
+    endif()
   else()
     swift_install_in_component(FILES ${module_outputs}
                                DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift/${library_subdir}"
                                COMPONENT "${SWIFTFILE_INSTALL_IN_COMPONENT}")
+    if(SWIFTFILE_STATIC)
+      swift_install_in_component(FILES ${module_outputs}
+                                 DESTINATION "lib${LLVM_LIBDIR_SUFFIX}/swift_static/${library_subdir}"
+                                 COMPONENT "${SWIFTFILE_INSTALL_IN_COMPONENT}")
+    endif()
   endif()
 
   set(line_directive_tool "${SWIFT_SOURCE_DIR}/utils/line-directive")
@@ -758,7 +802,27 @@ function(_compile_swift_files
           ${swift_ide_test_dependency}
           ${create_dirs_dependency_target}
         COMMENT "Generating ${module_file}")
-    set("${dependency_module_target_out_var_name}" "${module_dependency_target}" PARENT_SCOPE)
+
+    if(SWIFTFILE_STATIC)
+      add_custom_command_target(
+        module_dependency_target_static
+        COMMAND
+          "${CMAKE_COMMAND}" "-E" "make_directory" ${module_dir_static}
+          ${specific_module_dir_static}
+        COMMAND
+          "${CMAKE_COMMAND}" "-E" "copy" ${module_file} ${module_file_static}
+        COMMAND
+          "${CMAKE_COMMAND}" "-E" "copy" ${module_doc_file} ${module_doc_file_static}
+        COMMAND
+          "${CMAKE_COMMAND}" "-E" "copy" ${interface_file} ${interface_file_static}
+        OUTPUT ${module_outputs_static}
+        DEPENDS
+          "${module_dependency_target}"
+        COMMENT "Generating ${module_file}")
+      set("${dependency_module_target_out_var_name}" "${module_dependency_target_static}" PARENT_SCOPE)
+    else()
+      set("${dependency_module_target_out_var_name}" "${module_dependency_target}" PARENT_SCOPE)
+    endif()
 
     # macCatalyst zippered swiftmodule
     if(maccatalyst_build_flavor STREQUAL "zippered")