[LLD] [MinGW] Hook up the --export-all-symbols and -output-def options

[ruiu]

LGTM

MinGW/Driver.cpp

bool mingw::link(ArrayRef<const char *> ArgsArr, raw_ostream &Diag) {
   }
 
   if (auto *A = Args.getLastArg(OPT_subs))
     Add("-subsystem:" + StringRef(A->getValue()));
   if (auto *A = Args.getLastArg(OPT_out_implib))
     Add("-implib:" + StringRef(A->getValue()));
   if (auto *A = Args.getLastArg(OPT_stack))
     Add("-stack:" + StringRef(A->getValue()));
+  if (auto *A = Args.getLastArg(OPT_output_def))
+    Add("-output-def:" + StringRef(A->getValue()));
 
   if (auto *A = Args.getLastArg(OPT_o))
     Add("-out:" + StringRef(A->getValue()));
   else if (Args.hasArg(OPT_shared))
     Add("-out:a.dll");
   else
     Add("-out:a.exe");
 
   if (Args.hasArg(OPT_shared))
     Add("-dll");
   if (Args.hasArg(OPT_verbose))
     Add("-verbose");
+  if (Args.hasArg(OPT_export_all_symbols))
+    Add("-export-all-symbols");
 
   if (auto *A = Args.getLastArg(OPT_m)) {
     StringRef S = A->getValue();
     if (S == "i386pe")
       Add("-machine:x86");
     else if (S == "i386pep")
       Add("-machine:x64");
     else if (S == "thumb2pe")

MinGW/Options.td

 include "llvm/Option/OptParser.td"
 
 class F<string name>: Flag<["--", "-"], name>;
 class J<string name>: Joined<["--", "-"], name>;
 class S<string name>: Separate<["--", "-"], name>;
 
 def L: JoinedOrSeparate<["-"], "L">, MetaVarName<"<dir>">,
   HelpText<"Add a directory to the library search path">;
 def entry: S<"entry">, MetaVarName<"<entry>">,
   HelpText<"Name of entry point symbol">;
+def export_all_symbols: F<"export-all-symbols">,
+    HelpText<"Export all symbols even if a def file or dllexport attributes are used">;
 def l: JoinedOrSeparate<["-"], "l">, MetaVarName<"<libName>">,
   HelpText<"Root name of library to use">;
 def m: JoinedOrSeparate<["-"], "m">, HelpText<"Set target emulation">;
 def mllvm: S<"mllvm">;
 def no_whole_archive: F<"no-whole-archive">,
     HelpText<"No longer include all object files for following archives">;
 def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
   HelpText<"Path to file to write output">;
 def out_implib: Separate<["--"], "out-implib">, HelpText<"Import library name">;
+def output_def: S<"output-def">, HelpText<"Output def file">;
 def shared: F<"shared">, HelpText<"Build a shared object">;
 def subs: S<"subsystem">, HelpText<"Specify subsystem">;
 def stack: S<"stack">;
 def whole_archive: F<"whole-archive">,
     HelpText<"Include all object files for following archives">;
 def verbose: F<"verbose">, HelpText<"Verbose mode">;
 
 // LLD specific options

test/MinGW/driver.test

 I386-ENTRY: -entry:DllMainCRTStartup@12
 
 RUN: ld.lld -### -m i386pep foo.o --whole-archive bar.a --no-whole-archive baz.a | FileCheck -check-prefix WHOLE-ARCHIVE %s
 RUN: ld.lld -### -m i386pep foo.o -whole-archive bar.a -no-whole-archive baz.a | FileCheck -check-prefix WHOLE-ARCHIVE %s
 WHOLE-ARCHIVE: foo.o -wholearchive:bar.a baz.a
 
 RUN: ld.lld -### -m i386pep foo.o | FileCheck -check-prefix MINGW-FLAG %s
 MINGW-FLAG: -lldmingw
+
+RUN: ld.lld -### -m i386pep foo.o --export-all-symbols | FileCheck -check-prefix EXPORT-ALL %s
+EXPORT-ALL: -export-all-symbols
+
+RUN: ld.lld -### -m i386pep foo.o --output-def out.def | FileCheck -check-prefix OUTPUT-DEF %s
+OUTPUT-DEF: -output-def:out.def