[MinGW] Add --reproduce option

[mstorsjo]

lld/MinGW/Driver.cpp

220

I don't see this -reproduce: option in the current COFF linker - is there a pending patch for it somewhere?

[ruiu]

Yes, please take a look at https://reviews.llvm.org/D68381 and https://reviews.llvm.org/D68378.

[mstorsjo]

In D68382#1694137, @ruiu wrote:

Yes, please take a look at https://reviews.llvm.org/D68381 and https://reviews.llvm.org/D68378.

Ah, great, then this is ok.

[ruiu]

If you are OK with the other patches, please stamp.

lld/MinGW/Driver.cpp

bool mingw::link(ArrayRef<const char *> argsArr, raw_ostream &diag) {
   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_image_base))
     add("-base:" + StringRef(a->getValue()));
   if (auto *a = args.getLastArg(OPT_map))
     add("-lldmap:" + StringRef(a->getValue()));
+  if (auto *a = args.getLastArg(OPT_reproduce))
+    add("-reproduce:" + 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");
 

lld/MinGW/Options.td

 defm output_def: Eq<"output-def", "Output def file">;
 def shared: F<"shared">, HelpText<"Build a shared object">;
 defm subs: Eq<"subsystem", "Specify subsystem">;
 def stack: S<"stack">;
 def strip_all: F<"strip-all">,
     HelpText<"Omit all symbol information from the output binary">;
 def strip_debug: F<"strip-debug">,
     HelpText<"Omit all debug information, but keep symbol information">;
+defm reproduce: Eq<"reproduce", "Write a tar file containing input files and command line options to reproduce link">;
 defm undefined: Eq<"undefined", "Include symbol in the link, if available">;
 def whole_archive: F<"whole-archive">,
     HelpText<"Include all object files for following archives">;
 def v: Flag<["-"], "v">, HelpText<"Display the version number">;
 def verbose: F<"verbose">, HelpText<"Verbose mode">;
 def version: F<"version">, HelpText<"Display the version number and exit">;
 defm require_defined: Eq<"require-defined",
      "Force symbol to be added to symbol table as an undefined one">;

lld/test/MinGW/driver.test

 REQUIRE-DEFINED: -include:_foo -include:_bar -include:_baz -include:_foo2
 
 RUN: ld.lld -### foo.o -m i386pe -u _foo --undefined _bar -undefined=_baz --undefined=_foo2 -u_foo3 | FileCheck -check-prefix=UNDEFINED %s
 UNDEFINED: -includeoptional:_foo -includeoptional:_bar -includeoptional:_baz -includeoptional:_foo2 -includeoptional:_foo3
 
 RUN: ld.lld -### -m i386pep foo.o -Llibpath | FileCheck -check-prefix LIBPATH %s
 LIBPATH: -libpath:libpath
 
+RUN: ld.lld -### -m i386pep foo.o --reproduce=foo.tar | FileCheck -check-prefix REPRO %s
+REPRO: -reproduce:foo.tar
+
 RUN: ld.lld -### -m i386pep foo.o --no-insert-timestamp | FileCheck -check-prefix NOTIMESTAMP %s
 RUN: ld.lld -### -m i386pep foo.o --insert-timestamp --no-insert-timestamp | FileCheck -check-prefix NOTIMESTAMP %s
 NOTIMESTAMP: -timestamp:0
 RUN: ld.lld -### -m i386pep foo.o --no-insert-timestamp --insert-timestamp | FileCheck -check-prefix TIMESTAMP %s
 TIMESTAMP-NOT: -timestamp:0
 
 RUN: ld.lld -### -m i386pep foo.o -appcontainer | FileCheck -check-prefix APPCONTAINER %s
 RUN: ld.lld -### -m i386pep foo.o --appcontainer | FileCheck -check-prefix APPCONTAINER %s