[LLD] [MinGW] Add support for the options --[no-]whole-archive

[ruiu]

LGTM

test/MinGW/driver.test

51

If you don't need -shared, please remove from this line.

[mstorsjo]

test/MinGW/driver.test

51

Ok, will remove before pushing.

MinGW/Driver.cpp

if (Args.getLastArgValue(OPT_m) == "i386pe")
     Add("-alternatename:__image_base__=___ImageBase");
   else
     Add("-alternatename:__image_base__=__ImageBase");
 
   std::vector<StringRef> SearchPaths;
   for (auto *A : Args.filtered(OPT_L))
     SearchPaths.push_back(A->getValue());
 
-  for (auto *A : Args.filtered(OPT_INPUT, OPT_l)) {
-    if (A->getOption().getUnaliasedOption().getID() == OPT_INPUT)
-      Add(A->getValue());
-    else
-      Add(searchLibrary(A->getValue(), SearchPaths, Args.hasArg(OPT_Bstatic)));
+  StringRef Prefix = "";
+  for (auto *A : Args.filtered(OPT_INPUT, OPT_l, OPT_whole_archive,
+                               OPT_no_whole_archive)) {
+    switch (A->getOption().getID()) {
+    case OPT_INPUT:
+      Add(Prefix + StringRef(A->getValue()));
+      break;
+    case OPT_l:
+      Add(Prefix +
+          searchLibrary(A->getValue(), SearchPaths, Args.hasArg(OPT_Bstatic)));
+      break;
+    case OPT_whole_archive:
+      Prefix = "-wholearchive:";
+      break;
+    case OPT_no_whole_archive:
+      Prefix = "";
+      break;
+    }
   }
 
   if (Args.hasArg(OPT_verbose))
     Add("-verbose");
 
   if (Args.hasArg(OPT_verbose) || Args.hasArg(OPT__HASH_HASH_HASH))
     outs() << llvm::join(LinkArgs, " ") << "\n";
 

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 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 shared: F<"shared">, HelpText<"Build a shared object">;
 def subs: Separate<["--"], "subsystem">, HelpText<"Specify subsystem">;
 def stack: Separate<["--"], "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
 def _HASH_HASH_HASH : Flag<["-"], "###">,
     HelpText<"Print (but do not run) the commands to run for this compilation">;
 
 // Currently stubs to avoid errors
 def Bdynamic: F<"Bdynamic">, HelpText<"Link against shared libraries">;

test/MinGW/driver.test

 RUN: ld.lld -### foo.o -m i386pep --stack 4194304,8192 | FileCheck -check-prefix=STACK %s
 STACK: -stack:4194304,8192
 
 RUN: ld.lld -### foo.o -m i386pep --verbose | FileCheck -check-prefix=VERBOSE %s
 VERBOSE: -verbose
 
 RUN: ld.lld -### -shared -m i386pe -e _DllMainCRTStartup@12 foo.o | FileCheck -check-prefix I386-ENTRY %s
 I386-ENTRY: -entry:DllMainCRTStartup@12
+
+RUN: ld.lld -### -shared -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