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//===- LibDriver.cpp - lib.exe-compatible driver --------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Defines an interface to a lib.exe-compatible driver that also understands
// bitcode files. Used by llvm-lib and lld-link2 /lib.
//
//===----------------------------------------------------------------------===//
#include "llvm/LibDriver/LibDriver.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Object/ArchiveWriter.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
namespace {
enum {
OPT_INVALID = 0,
#define OPTION(_1, _2, ID, _4, _5, _6, _7, _8, _9, _10, _11) OPT_##ID,
#include "Options.inc"
#undef OPTION
};
#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
#include "Options.inc"
#undef PREFIX
static const llvm::opt::OptTable::Info infoTable[] = {
#define OPTION(X1, X2, ID, KIND, GROUP, ALIAS, X6, X7, X8, X9, X10) \
{ \
X1, X2, X9, X10, OPT_##ID, llvm::opt::Option::KIND##Class, X8, X7, \
OPT_##GROUP, OPT_##ALIAS, X6 \
},
#include "Options.inc"
#undef OPTION
};
class LibOptTable : public llvm::opt::OptTable {
public:
LibOptTable() : OptTable(infoTable, llvm::array_lengthof(infoTable), true) {}
};
}
static std::string getOutputPath(llvm::opt::InputArgList *Args) {
if (auto *Arg = Args->getLastArg(OPT_out))
return Arg->getValue();
for (auto *Arg : Args->filtered(OPT_INPUT)) {
if (!StringRef(Arg->getValue()).endswith_lower(".obj"))
continue;
SmallString<128> Val = StringRef(Arg->getValue());
llvm::sys::path::replace_extension(Val, ".lib");
return Val.str();
}
llvm_unreachable("internal error");
}
namespace {
// FIXME: Should re-use StringSaver from lld.
class StrDupSaver : public cl::StringSaver {
std::vector<char *> Dups;
public:
~StrDupSaver() override {
for (std::vector<char *>::iterator I = Dups.begin(), E = Dups.end(); I != E;
++I) {
char *Dup = *I;
free(Dup);
}
}
const char *SaveString(const char *Str) override {
char *Dup = strdup(Str);
Dups.push_back(Dup);
return Dup;
}
};
}
int llvm::libDriverMain(int Argc, const char **Argv) {
SmallVector<const char *, 20> NewArgv(Argv, Argv + Argc);
StrDupSaver Saver;
cl::ExpandResponseFiles(Saver, cl::TokenizeWindowsCommandLine, NewArgv);
Argv = &NewArgv[0];
Argc = static_cast<int>(NewArgv.size());
LibOptTable Table;
unsigned MissingIndex;
unsigned MissingCount;
std::unique_ptr<llvm::opt::InputArgList> Args(
Table.ParseArgs(&Argv[1], &Argv[Argc], MissingIndex, MissingCount));
if (MissingCount) {
llvm::errs() << "missing arg value for \""
<< Args->getArgString(MissingIndex)
<< "\", expected " << MissingCount
<< (MissingCount == 1 ? " argument.\n" : " arguments.\n");
return 1;
}
for (auto *Arg : Args->filtered(OPT_UNKNOWN))
llvm::errs() << "ignoring unknown argument: " << Arg->getSpelling() << "\n";
if (Args->filtered_begin(OPT_INPUT) == Args->filtered_end()) {
llvm::errs() << "no input files.\n";
return 1;
}
std::vector<llvm::NewArchiveIterator> Members;
for (auto *Arg : Args->filtered(OPT_INPUT))
Members.emplace_back(Arg->getValue(),
llvm::sys::path::filename(Arg->getValue()));
std::pair<StringRef, std::error_code> Result = llvm::writeArchive(
getOutputPath(Args.get()), Members, /*WriteSymtab=*/true);
if (Result.second) {
if (Result.first.empty())
Result.first = Argv[0];
llvm::errs() << Result.first << ": " << Result.second.message() << "\n";
return 1;
}
return 0;
}
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