[GN]: Support for loadable modules

tools/gn/variables.cc

Index: tools/gn/variables.cc
diff --git a/tools/gn/variables.cc b/tools/gn/variables.cc
index 6f9c8486fe323f3a87a143519e1647dd371b9ab9..294e05c6513b1f2cbab144f97a654904db24e94e 100644
--- a/tools/gn/variables.cc
+++ b/tools/gn/variables.cc
@@ -611,6 +611,22 @@ const char kConsole_Help[] =
     "    console = true\n"
     "  }\n";
 
+const char kDarwinBundle[] = "darwin_bundle";
+const char kDarwinBundle_HelpShort[] =
+    "darwin_bundle: [boolean] Produce a bundle on Darwin platforms";
+const char kDarwinBundle_Help[] =
+    "darwin_bundle: Produce an .app or .framework directory.\n"
+    "\n"
+    "  Bundles on Darwin platforms are directories with standardized\n"
+    "  hierarchical structures that hold executable code and the resources\n"
+    "  used by that code.\n"
+    "\n"
+    "Example\n"
+    "\n"
+    "  executable(\"combustible_lemons_app\") {\n"
+    "    darwin_bundle = true\n"
+    "  }\n";
+
 const char kData[] = "data";
 const char kData_HelpShort[] =
     "data: [file list] Runtime data file dependencies.";
@@ -941,6 +957,24 @@ const char kLibs_Help[] =
     "  On Linux:\n"
     "    libs = [ \"ld\" ]\n";
 
+const char kLoadableModule[] = "loadable_module";
+const char kLoadableModule_HelpShort[] =
+    "loadable_module: [boolean] Produce a loadable module from a shared lib.";
+const char kLoadableModule_Help[] =
+    "darwin_bundle: Produce a loadable module from a shared library target.\n"
+    "\n"
+    "  Loadable modules are different from shared libraries in that they are\n"
+    "  not linked at compile time and can only be dynamically loaded at\n"
+    "  runtime.\n"
+    "\n"
+    "  The flag only applies to \"shared_library\" targets.\n"
+    "\n"
+    "Example\n"
+    "\n"
+    "  shared_library(\"combustible_lemons_lib\") {\n"
+    "    loadable_module = true\n"
+    "  }\n";
+
 const char kOutputExtension[] = "output_extension";
 const char kOutputExtension_HelpShort[] =
     "output_extension: [string] Value to use for the output's file extension.";