2015-07-25 05:03:07 +08:00
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//===- DriverUtils.cpp ----------------------------------------------------===//
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//
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// The LLVM Linker
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains utility functions for the driver. Because there
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// are so many small functions, we created this separate file to make
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// Driver.cpp less cluttered.
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//
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//===----------------------------------------------------------------------===//
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#include "Driver.h"
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2015-08-06 23:08:23 +08:00
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#include "Error.h"
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2015-07-25 05:03:07 +08:00
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#include "llvm/ADT/STLExtras.h"
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using namespace llvm;
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using namespace lld;
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using namespace lld::elf2;
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// Create OptTable
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// Create prefix string literals used in Options.td
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#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
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#include "Options.inc"
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#undef PREFIX
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// Create table mapping all options defined in Options.td
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static const opt::OptTable::Info infoTable[] = {
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#define OPTION(X1, X2, ID, KIND, GROUP, ALIAS, X6, X7, X8, X9, X10) \
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{ \
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X1, X2, X9, X10, OPT_##ID, opt::Option::KIND##Class, X8, X7, OPT_##GROUP, \
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OPT_##ALIAS, X6 \
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} \
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,
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#include "Options.inc"
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#undef OPTION
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};
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class ELFOptTable : public opt::OptTable {
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public:
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ELFOptTable() : OptTable(infoTable, array_lengthof(infoTable)) {}
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};
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// Parses a given list of options.
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opt::InputArgList ArgParser::parse(ArrayRef<const char *> Argv) {
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// Make InputArgList from string vectors.
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ELFOptTable Table;
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unsigned MissingIndex;
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unsigned MissingCount;
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opt::InputArgList Args = Table.ParseArgs(Argv, MissingIndex, MissingCount);
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if (MissingCount)
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error(Twine("missing arg value for \"") + Args.getArgString(MissingIndex) +
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"\", expected " + Twine(MissingCount) +
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(MissingCount == 1 ? " argument.\n" : " arguments"));
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for (auto *Arg : Args.filtered(OPT_UNKNOWN))
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error(Twine("unknown argument: ") + Arg->getSpelling());
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return Args;
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}
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