Index: wasm/Options.td
===================================================================
--- wasm/Options.td
+++ wasm/Options.td
@@ -11,6 +11,7 @@
   def _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>;
 }
 
+// The follow flags are shared with the ELF linker
 def L: JoinedOrSeparate<["-"], "L">, MetaVarName<"<dir>">,
   HelpText<"Add a directory to the library search path">;
 
@@ -20,7 +21,15 @@
 def color_diagnostics_eq: J<"color-diagnostics=">,
   HelpText<"Use colors in diagnostics">;
 
-// The follow flags are shared with the ELF linker
+def entry: S<"entry">, MetaVarName<"<entry>">,
+  HelpText<"Name of entry point symbol">;
+
+def error_limit: J<"error-limit=">,
+  HelpText<"Maximum number of errors to emit before stopping (0 = no limit)">;
+
+def fatal_warnings: F<"fatal-warnings">,
+  HelpText<"Treat warnings as errors">;
+
 def help: F<"help">, HelpText<"Print option help">;
 
 def l: JoinedOrSeparate<["-"], "l">, MetaVarName<"<libName>">,
@@ -34,43 +43,34 @@
 def no_color_diagnostics: F<"no-color-diagnostics">,
   HelpText<"Do not use colors in diagnostics">;
 
-def no_check_signatures: F<"no-check-signatures">, HelpText<"Don't check function signatures">;
+def no_fatal_warnings: F<"no-fatal-warnings">;
 
 def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
   HelpText<"Path to file to write output">;
 
-def threads: F<"threads">, HelpText<"Run the linker multi-threaded">;
-
-def check_signatures: F<"check-signatures">, HelpText<"Check function signatures">;
-
-def v: Flag<["-"], "v">, HelpText<"Display the version number">;
-
-def version: F<"version">, HelpText<"Display the version number and exit">;
-
-def verbose: F<"verbose">, HelpText<"Verbose mode">;
-
 def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
 
 def strip_all: F<"strip-all">, HelpText<"Strip all symbols">;
 
 def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
 
+def threads: F<"threads">, HelpText<"Run the linker multi-threaded">;
+
+def v: Flag<["-"], "v">, HelpText<"Display the version number">;
+
 defm undefined: Eq<"undefined">,
   HelpText<"Force undefined symbol during linking">;
 
-def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
-  HelpText<"Linker option extensions">;
-
-def entry: S<"entry">, MetaVarName<"<entry>">,
-  HelpText<"Name of entry point symbol">;
+def version: F<"version">, HelpText<"Display the version number and exit">;
 
-def no_entry: F<"no-entry">,
-  HelpText<"Do not output any entry point">;
+def verbose: F<"verbose">, HelpText<"Verbose mode">;
 
-def error_limit: J<"error-limit=">,
-  HelpText<"Maximum number of errors to emit before stopping (0 = no limit)">;
+def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
+  HelpText<"Linker option extensions">;
 
 // The follow flags are unique to wasm
+def check_signatures: F<"check-signatures">,
+  HelpText<"Check function signatures">;
 
 defm export: Eq<"export">,
   HelpText<"Force a symbol to be exported">;
@@ -81,6 +81,12 @@
 def initial_memory: J<"initial-memory=">,
   HelpText<"Initial size of the linear memory">;
 
+def no_check_signatures: F<"no-check-signatures">,
+  HelpText<"Don't check function signatures">;
+
+def no_entry: F<"no-entry">,
+  HelpText<"Do not output any entry point">;
+
 def max_memory: J<"max-memory=">,
   HelpText<"Maximum size of the linear memory">;