forked from OSchip/llvm-project
78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
//===- DriverUtils.cpp ----------------------------------------------------===//
|
|
//
|
|
// The LLVM Linker
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains utility functions for the driver. Because there
|
|
// are so many small functions, we created this separate file to make
|
|
// Driver.cpp less cluttered.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Driver.h"
|
|
#include "Error.h"
|
|
#include "llvm/ADT/STLExtras.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/StringSaver.h"
|
|
|
|
using namespace llvm;
|
|
|
|
using namespace lld;
|
|
using namespace lld::elf2;
|
|
|
|
// Create OptTable
|
|
|
|
// Create prefix string literals used in Options.td
|
|
#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
|
|
#include "Options.inc"
|
|
#undef PREFIX
|
|
|
|
// Create table mapping all options defined in Options.td
|
|
static const opt::OptTable::Info infoTable[] = {
|
|
#define OPTION(X1, X2, ID, KIND, GROUP, ALIAS, X6, X7, X8, X9, X10) \
|
|
{ \
|
|
X1, X2, X9, X10, OPT_##ID, opt::Option::KIND##Class, X8, X7, OPT_##GROUP, \
|
|
OPT_##ALIAS, X6 \
|
|
} \
|
|
,
|
|
#include "Options.inc"
|
|
#undef OPTION
|
|
};
|
|
|
|
class ELFOptTable : public opt::OptTable {
|
|
public:
|
|
ELFOptTable() : OptTable(infoTable, array_lengthof(infoTable)) {}
|
|
};
|
|
|
|
// Parses a given list of options.
|
|
opt::InputArgList ArgParser::parse(ArrayRef<const char *> Argv) {
|
|
// Make InputArgList from string vectors.
|
|
ELFOptTable Table;
|
|
unsigned MissingIndex;
|
|
unsigned MissingCount;
|
|
|
|
// Expand response files. '@<filename>' is replaced by the file's contents.
|
|
SmallVector<const char *, 256> Vec(Argv.data(), Argv.data() + Argv.size());
|
|
StringSaver Saver(Alloc);
|
|
llvm::cl::ExpandResponseFiles(Saver, llvm::cl::TokenizeGNUCommandLine, Vec);
|
|
|
|
// Parse options and then do error checking.
|
|
opt::InputArgList Args = Table.ParseArgs(Vec, MissingIndex, MissingCount);
|
|
if (MissingCount)
|
|
error(Twine("missing arg value for \"") + Args.getArgString(MissingIndex) +
|
|
"\", expected " + Twine(MissingCount) +
|
|
(MissingCount == 1 ? " argument.\n" : " arguments"));
|
|
|
|
iterator_range<opt::arg_iterator> Unknowns = Args.filtered(OPT_UNKNOWN);
|
|
for (auto *Arg : Unknowns)
|
|
warning("warning: unknown argument: " + Arg->getSpelling());
|
|
if (Unknowns.begin() != Unknowns.end())
|
|
error("unknown argument(s) found");
|
|
|
|
return Args;
|
|
}
|