forked from OSchip/llvm-project
710 lines
25 KiB
C++
710 lines
25 KiB
C++
//===- lib/Driver/DarwinLdDriver.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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/// \file
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///
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/// Concrete instance of the Driver for darwin's ld.
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///
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//===----------------------------------------------------------------------===//
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#include "lld/Driver/Driver.h"
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#include "lld/Driver/DarwinInputGraph.h"
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#include "lld/ReaderWriter/MachOLinkingContext.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/Option/Arg.h"
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#include "llvm/Option/Option.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/Host.h"
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#include "llvm/Support/MachO.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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using namespace lld;
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namespace {
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// Create enum with OPT_xxx values for each option in DarwinLdOptions.td
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enum {
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OPT_INVALID = 0,
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#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
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HELP, META) \
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OPT_##ID,
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#include "DarwinLdOptions.inc"
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#undef OPTION
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};
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// Create prefix string literals used in DarwinLdOptions.td
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#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
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#include "DarwinLdOptions.inc"
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#undef PREFIX
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// Create table mapping all options defined in DarwinLdOptions.td
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static const llvm::opt::OptTable::Info infoTable[] = {
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#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
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HELPTEXT, METAVAR) \
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{ PREFIX, NAME, HELPTEXT, METAVAR, OPT_##ID, llvm::opt::Option::KIND##Class, \
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PARAM, FLAGS, OPT_##GROUP, OPT_##ALIAS, ALIASARGS },
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#include "DarwinLdOptions.inc"
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#undef OPTION
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};
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// Create OptTable class for parsing actual command line arguments
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class DarwinLdOptTable : public llvm::opt::OptTable {
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public:
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DarwinLdOptTable() : OptTable(infoTable, llvm::array_lengthof(infoTable)){}
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};
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} // anonymous namespace
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// Test may be running on Windows. Canonicalize the path
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// separator to '/' to get consistent outputs for tests.
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static std::string canonicalizePath(StringRef path) {
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char sep = llvm::sys::path::get_separator().front();
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if (sep != '/') {
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std::string fixedPath = path;
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std::replace(fixedPath.begin(), fixedPath.end(), sep, '/');
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return fixedPath;
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} else {
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return path;
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}
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}
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static void addFile(StringRef path, std::unique_ptr<DarwinInputGraph> &inputGraph,
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MachOLinkingContext &ctx, bool loadWholeArchive,
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bool upwardDylib) {
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auto node = llvm::make_unique<MachOFileNode>(path, ctx);
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if (loadWholeArchive)
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node->setLoadWholeArchive();
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if (upwardDylib)
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node->setUpwardDylib();
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inputGraph->addInputElement(std::move(node));
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}
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// Export lists are one symbol per line. Blank lines are ignored.
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// Trailing comments start with #.
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static std::error_code parseExportsList(StringRef exportFilePath,
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MachOLinkingContext &ctx,
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raw_ostream &diagnostics) {
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// Map in export list file.
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ErrorOr<std::unique_ptr<MemoryBuffer>> mb =
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MemoryBuffer::getFileOrSTDIN(exportFilePath);
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if (std::error_code ec = mb.getError())
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return ec;
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ctx.addInputFileDependency(exportFilePath);
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StringRef buffer = mb->get()->getBuffer();
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while (!buffer.empty()) {
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// Split off each line in the file.
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std::pair<StringRef, StringRef> lineAndRest = buffer.split('\n');
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StringRef line = lineAndRest.first;
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// Ignore trailing # comments.
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std::pair<StringRef, StringRef> symAndComment = line.split('#');
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StringRef sym = symAndComment.first.trim();
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if (!sym.empty())
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ctx.addExportSymbol(sym);
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buffer = lineAndRest.second;
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}
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return std::error_code();
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}
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//
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// There are two variants of the -filelist option:
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//
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// -filelist <path>
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// In this variant, the path is to a text file which contains one file path
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// per line. There are no comments or trimming of whitespace.
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//
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// -fileList <path>,<dir>
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// In this variant, the path is to a text file which contains a partial path
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// per line. The <dir> prefix is prepended to each partial path.
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//
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static std::error_code parseFileList(StringRef fileListPath,
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std::unique_ptr<DarwinInputGraph> &inputGraph,
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MachOLinkingContext &ctx, bool forceLoad,
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raw_ostream &diagnostics) {
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// If there is a comma, split off <dir>.
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std::pair<StringRef, StringRef> opt = fileListPath.split(',');
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StringRef filePath = opt.first;
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StringRef dirName = opt.second;
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ctx.addInputFileDependency(filePath);
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// Map in file list file.
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ErrorOr<std::unique_ptr<MemoryBuffer>> mb =
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MemoryBuffer::getFileOrSTDIN(filePath);
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if (std::error_code ec = mb.getError())
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return ec;
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StringRef buffer = mb->get()->getBuffer();
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while (!buffer.empty()) {
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// Split off each line in the file.
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std::pair<StringRef, StringRef> lineAndRest = buffer.split('\n');
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StringRef line = lineAndRest.first;
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StringRef path;
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if (!dirName.empty()) {
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// If there is a <dir> then prepend dir to each line.
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SmallString<256> fullPath;
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fullPath.assign(dirName);
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llvm::sys::path::append(fullPath, Twine(line));
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path = ctx.copy(fullPath.str());
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} else {
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// No <dir> use whole line as input file path.
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path = ctx.copy(line);
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}
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if (!ctx.pathExists(path)) {
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return make_dynamic_error_code(Twine("File not found '")
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+ path
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+ "'");
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}
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if (ctx.testingFileUsage()) {
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diagnostics << "Found filelist entry " << canonicalizePath(path) << '\n';
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}
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addFile(path, inputGraph, ctx, forceLoad, false);
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buffer = lineAndRest.second;
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}
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return std::error_code();
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}
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/// Parse number assuming it is base 16, but allow 0x prefix.
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static bool parseNumberBase16(StringRef numStr, uint64_t &baseAddress) {
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if (numStr.startswith_lower("0x"))
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numStr = numStr.drop_front(2);
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return numStr.getAsInteger(16, baseAddress);
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}
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namespace lld {
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bool DarwinLdDriver::linkMachO(int argc, const char *argv[],
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raw_ostream &diagnostics) {
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MachOLinkingContext ctx;
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if (!parse(argc, argv, ctx, diagnostics))
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return false;
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if (ctx.doNothing())
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return true;
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// Register possible input file parsers.
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ctx.registry().addSupportMachOObjects(ctx);
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ctx.registry().addSupportArchives(ctx.logInputFiles());
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ctx.registry().addSupportNativeObjects();
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ctx.registry().addSupportYamlFiles();
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return link(ctx, diagnostics);
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}
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bool DarwinLdDriver::parse(int argc, const char *argv[],
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MachOLinkingContext &ctx, raw_ostream &diagnostics) {
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// Parse command line options using DarwinLdOptions.td
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std::unique_ptr<llvm::opt::InputArgList> parsedArgs;
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DarwinLdOptTable table;
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unsigned missingIndex;
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unsigned missingCount;
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bool globalWholeArchive = false;
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parsedArgs.reset(
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table.ParseArgs(&argv[1], &argv[argc], missingIndex, missingCount));
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if (missingCount) {
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diagnostics << "error: missing arg value for '"
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<< parsedArgs->getArgString(missingIndex) << "' expected "
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<< missingCount << " argument(s).\n";
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return false;
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}
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for (auto unknownArg : parsedArgs->filtered(OPT_UNKNOWN)) {
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diagnostics << "warning: ignoring unknown argument: "
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<< unknownArg->getAsString(*parsedArgs) << "\n";
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}
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// Figure out output kind ( -dylib, -r, -bundle, -preload, or -static )
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llvm::MachO::HeaderFileType fileType = llvm::MachO::MH_EXECUTE;
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if ( llvm::opt::Arg *kind = parsedArgs->getLastArg(OPT_dylib, OPT_relocatable,
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OPT_bundle, OPT_static, OPT_preload)) {
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switch (kind->getOption().getID()) {
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case OPT_dylib:
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fileType = llvm::MachO::MH_DYLIB;
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break;
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case OPT_relocatable:
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fileType = llvm::MachO::MH_OBJECT;
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break;
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case OPT_bundle:
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fileType = llvm::MachO::MH_BUNDLE;
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break;
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case OPT_static:
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fileType = llvm::MachO::MH_EXECUTE;
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break;
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case OPT_preload:
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fileType = llvm::MachO::MH_PRELOAD;
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break;
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}
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}
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// Handle -arch xxx
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MachOLinkingContext::Arch arch = MachOLinkingContext::arch_unknown;
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if (llvm::opt::Arg *archStr = parsedArgs->getLastArg(OPT_arch)) {
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arch = MachOLinkingContext::archFromName(archStr->getValue());
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if (arch == MachOLinkingContext::arch_unknown) {
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diagnostics << "error: unknown arch named '" << archStr->getValue()
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<< "'\n";
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return false;
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}
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}
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// If no -arch specified, scan input files to find first non-fat .o file.
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if ((arch == MachOLinkingContext::arch_unknown)
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&& !parsedArgs->getLastArg(OPT_test_file_usage)) {
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for (auto &inFile: parsedArgs->filtered(OPT_INPUT)) {
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// This is expensive because it opens and maps the file. But that is
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// ok because no -arch is rare.
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if (MachOLinkingContext::isThinObjectFile(inFile->getValue(), arch))
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break;
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}
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if (arch == MachOLinkingContext::arch_unknown) {
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// If no -arch and no options at all, print usage message.
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if (parsedArgs->size() == 0)
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table.PrintHelp(llvm::outs(), argv[0], "LLVM Linker", false);
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else
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diagnostics << "error: -arch not specified and could not be inferred\n";
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return false;
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}
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}
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// Handle -macosx_version_min or -ios_version_min
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MachOLinkingContext::OS os = MachOLinkingContext::OS::macOSX;
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uint32_t minOSVersion = 0;
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if (llvm::opt::Arg *minOS =
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parsedArgs->getLastArg(OPT_macosx_version_min, OPT_ios_version_min,
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OPT_ios_simulator_version_min)) {
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switch (minOS->getOption().getID()) {
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case OPT_macosx_version_min:
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os = MachOLinkingContext::OS::macOSX;
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if (MachOLinkingContext::parsePackedVersion(minOS->getValue(),
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minOSVersion)) {
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diagnostics << "error: malformed macosx_version_min value\n";
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return false;
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}
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break;
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case OPT_ios_version_min:
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os = MachOLinkingContext::OS::iOS;
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if (MachOLinkingContext::parsePackedVersion(minOS->getValue(),
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minOSVersion)) {
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diagnostics << "error: malformed ios_version_min value\n";
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return false;
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}
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break;
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case OPT_ios_simulator_version_min:
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os = MachOLinkingContext::OS::iOS_simulator;
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if (MachOLinkingContext::parsePackedVersion(minOS->getValue(),
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minOSVersion)) {
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diagnostics << "error: malformed ios_simulator_version_min value\n";
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return false;
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}
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break;
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}
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} else {
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// No min-os version on command line, check environment variables
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}
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// Now that there's enough information parsed in, let the linking context
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// set up default values.
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ctx.configure(fileType, arch, os, minOSVersion);
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// Handle -e xxx
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if (llvm::opt::Arg *entry = parsedArgs->getLastArg(OPT_entry))
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ctx.setEntrySymbolName(entry->getValue());
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// Handle -o xxx
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if (llvm::opt::Arg *outpath = parsedArgs->getLastArg(OPT_output))
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ctx.setOutputPath(outpath->getValue());
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else
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ctx.setOutputPath("a.out");
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// Handle -image_base XXX and -seg1addr XXXX
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if (llvm::opt::Arg *imageBase = parsedArgs->getLastArg(OPT_image_base)) {
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uint64_t baseAddress;
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if (parseNumberBase16(imageBase->getValue(), baseAddress)) {
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diagnostics << "error: image_base expects a hex number\n";
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return false;
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} else if (baseAddress < ctx.pageZeroSize()) {
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diagnostics << "error: image_base overlaps with __PAGEZERO\n";
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return false;
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} else if (baseAddress % ctx.pageSize()) {
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diagnostics << "error: image_base must be a multiple of page size ("
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<< llvm::format("0x%" PRIx64, ctx.pageSize()) << ")\n";
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return false;
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}
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ctx.setBaseAddress(baseAddress);
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}
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// Handle -dead_strip
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if (parsedArgs->getLastArg(OPT_dead_strip))
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ctx.setDeadStripping(true);
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// Handle -all_load
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if (parsedArgs->getLastArg(OPT_all_load))
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globalWholeArchive = true;
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// Handle -install_name
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if (llvm::opt::Arg *installName = parsedArgs->getLastArg(OPT_install_name))
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ctx.setInstallName(installName->getValue());
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else
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ctx.setInstallName(ctx.outputPath());
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// Handle -mark_dead_strippable_dylib
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if (parsedArgs->getLastArg(OPT_mark_dead_strippable_dylib))
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ctx.setDeadStrippableDylib(true);
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// Handle -compatibility_version and -current_version
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if (llvm::opt::Arg *vers =
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parsedArgs->getLastArg(OPT_compatibility_version)) {
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if (ctx.outputMachOType() != llvm::MachO::MH_DYLIB) {
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diagnostics
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<< "error: -compatibility_version can only be used with -dylib\n";
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return false;
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}
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uint32_t parsedVers;
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if (MachOLinkingContext::parsePackedVersion(vers->getValue(), parsedVers)) {
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diagnostics << "error: -compatibility_version value is malformed\n";
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return false;
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}
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ctx.setCompatibilityVersion(parsedVers);
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}
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if (llvm::opt::Arg *vers = parsedArgs->getLastArg(OPT_current_version)) {
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if (ctx.outputMachOType() != llvm::MachO::MH_DYLIB) {
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diagnostics << "-current_version can only be used with -dylib\n";
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return false;
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}
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uint32_t parsedVers;
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if (MachOLinkingContext::parsePackedVersion(vers->getValue(), parsedVers)) {
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diagnostics << "error: -current_version value is malformed\n";
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return false;
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}
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ctx.setCurrentVersion(parsedVers);
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}
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// Handle -bundle_loader
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if (llvm::opt::Arg *loader = parsedArgs->getLastArg(OPT_bundle_loader))
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ctx.setBundleLoader(loader->getValue());
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// Handle -sectalign segname sectname align
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for (auto &alignArg : parsedArgs->filtered(OPT_sectalign)) {
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const char* segName = alignArg->getValue(0);
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const char* sectName = alignArg->getValue(1);
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const char* alignStr = alignArg->getValue(2);
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if ((alignStr[0] == '0') && (alignStr[1] == 'x'))
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alignStr += 2;
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unsigned long long alignValue;
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if (llvm::getAsUnsignedInteger(alignStr, 16, alignValue)) {
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diagnostics << "error: -sectalign alignment value '"
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<< alignStr << "' not a valid number\n";
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return false;
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}
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uint8_t align2 = llvm::countTrailingZeros(alignValue);
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if ( (unsigned long)(1 << align2) != alignValue ) {
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diagnostics << "warning: alignment for '-sectalign "
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<< segName << " " << sectName
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<< llvm::format(" 0x%llX", alignValue)
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<< "' is not a power of two, using "
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<< llvm::format("0x%08X", (1 << align2)) << "\n";
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}
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ctx.addSectionAlignment(segName, sectName, align2);
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}
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// Handle -mllvm
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for (auto &llvmArg : parsedArgs->filtered(OPT_mllvm)) {
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ctx.appendLLVMOption(llvmArg->getValue());
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}
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// Handle -print_atoms
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if (parsedArgs->getLastArg(OPT_print_atoms))
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ctx.setPrintAtoms();
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// Handle -t (trace) option.
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if (parsedArgs->getLastArg(OPT_t))
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ctx.setLogInputFiles(true);
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// Handle -demangle option.
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if (parsedArgs->getLastArg(OPT_demangle))
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ctx.setDemangleSymbols(true);
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// Handle -keep_private_externs
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if (parsedArgs->getLastArg(OPT_keep_private_externs)) {
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ctx.setKeepPrivateExterns(true);
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if (ctx.outputMachOType() != llvm::MachO::MH_OBJECT)
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diagnostics << "warning: -keep_private_externs only used in -r mode\n";
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}
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// Handle -dependency_info <path> used by Xcode.
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if (llvm::opt::Arg *depInfo = parsedArgs->getLastArg(OPT_dependency_info)) {
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if (std::error_code ec = ctx.createDependencyFile(depInfo->getValue())) {
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diagnostics << "warning: " << ec.message()
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<< ", processing '-dependency_info "
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<< depInfo->getValue()
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<< "'\n";
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}
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}
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// In -test_file_usage mode, we'll be given an explicit list of paths that
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// exist. We'll also be expected to print out information about how we located
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// libraries and so on that the user specified, but not to actually do any
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// linking.
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if (parsedArgs->getLastArg(OPT_test_file_usage)) {
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ctx.setTestingFileUsage();
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// With paths existing by fiat, linking is not going to end well.
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ctx.setDoNothing(true);
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// Only bother looking for an existence override if we're going to use it.
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for (auto existingPath : parsedArgs->filtered(OPT_path_exists)) {
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ctx.addExistingPathForDebug(existingPath->getValue());
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}
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}
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std::unique_ptr<DarwinInputGraph> inputGraph(new DarwinInputGraph());
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// Now construct the set of library search directories, following ld64's
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// baroque set of accumulated hacks. Mostly, the algorithm constructs
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// { syslibroots } x { libpaths }
|
|
//
|
|
// Unfortunately, there are numerous exceptions:
|
|
// 1. Only absolute paths get modified by syslibroot options.
|
|
// 2. If there is just 1 -syslibroot, system paths not found in it are
|
|
// skipped.
|
|
// 3. If the last -syslibroot is "/", all of them are ignored entirely.
|
|
// 4. If { syslibroots } x path == {}, the original path is kept.
|
|
std::vector<StringRef> sysLibRoots;
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|
for (auto syslibRoot : parsedArgs->filtered(OPT_syslibroot)) {
|
|
sysLibRoots.push_back(syslibRoot->getValue());
|
|
}
|
|
if (!sysLibRoots.empty()) {
|
|
// Ignore all if last -syslibroot is "/".
|
|
if (sysLibRoots.back() != "/")
|
|
ctx.setSysLibRoots(sysLibRoots);
|
|
}
|
|
|
|
// Paths specified with -L come first, and are not considered system paths for
|
|
// the case where there is precisely 1 -syslibroot.
|
|
for (auto libPath : parsedArgs->filtered(OPT_L)) {
|
|
ctx.addModifiedSearchDir(libPath->getValue());
|
|
}
|
|
|
|
// Process -F directories (where to look for frameworks).
|
|
for (auto fwPath : parsedArgs->filtered(OPT_F)) {
|
|
ctx.addFrameworkSearchDir(fwPath->getValue());
|
|
}
|
|
|
|
// -Z suppresses the standard search paths.
|
|
if (!parsedArgs->hasArg(OPT_Z)) {
|
|
ctx.addModifiedSearchDir("/usr/lib", true);
|
|
ctx.addModifiedSearchDir("/usr/local/lib", true);
|
|
ctx.addFrameworkSearchDir("/Library/Frameworks", true);
|
|
ctx.addFrameworkSearchDir("/System/Library/Frameworks", true);
|
|
}
|
|
|
|
// Now that we've constructed the final set of search paths, print out those
|
|
// search paths in verbose mode.
|
|
if (parsedArgs->getLastArg(OPT_v)) {
|
|
diagnostics << "Library search paths:\n";
|
|
for (auto path : ctx.searchDirs()) {
|
|
diagnostics << " " << path << '\n';
|
|
}
|
|
diagnostics << "Framework search paths:\n";
|
|
for (auto path : ctx.frameworkDirs()) {
|
|
diagnostics << " " << path << '\n';
|
|
}
|
|
}
|
|
|
|
// Handle -exported_symbols_list <file>
|
|
for (auto expFile : parsedArgs->filtered(OPT_exported_symbols_list)) {
|
|
if (ctx.exportMode() == MachOLinkingContext::ExportMode::blackList) {
|
|
diagnostics << "error: -exported_symbols_list cannot be combined "
|
|
<< "with -unexported_symbol[s_list]\n";
|
|
return false;
|
|
}
|
|
ctx.setExportMode(MachOLinkingContext::ExportMode::whiteList);
|
|
if (std::error_code ec = parseExportsList(expFile->getValue(), ctx,
|
|
diagnostics)) {
|
|
diagnostics << "error: " << ec.message()
|
|
<< ", processing '-exported_symbols_list "
|
|
<< expFile->getValue()
|
|
<< "'\n";
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Handle -exported_symbol <symbol>
|
|
for (auto symbol : parsedArgs->filtered(OPT_exported_symbol)) {
|
|
if (ctx.exportMode() == MachOLinkingContext::ExportMode::blackList) {
|
|
diagnostics << "error: -exported_symbol cannot be combined "
|
|
<< "with -unexported_symbol[s_list]\n";
|
|
return false;
|
|
}
|
|
ctx.setExportMode(MachOLinkingContext::ExportMode::whiteList);
|
|
ctx.addExportSymbol(symbol->getValue());
|
|
}
|
|
|
|
// Handle -unexported_symbols_list <file>
|
|
for (auto expFile : parsedArgs->filtered(OPT_unexported_symbols_list)) {
|
|
if (ctx.exportMode() == MachOLinkingContext::ExportMode::whiteList) {
|
|
diagnostics << "error: -unexported_symbols_list cannot be combined "
|
|
<< "with -exported_symbol[s_list]\n";
|
|
return false;
|
|
}
|
|
ctx.setExportMode(MachOLinkingContext::ExportMode::blackList);
|
|
if (std::error_code ec = parseExportsList(expFile->getValue(), ctx,
|
|
diagnostics)) {
|
|
diagnostics << "error: " << ec.message()
|
|
<< ", processing '-unexported_symbols_list "
|
|
<< expFile->getValue()
|
|
<< "'\n";
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Handle -unexported_symbol <symbol>
|
|
for (auto symbol : parsedArgs->filtered(OPT_unexported_symbol)) {
|
|
if (ctx.exportMode() == MachOLinkingContext::ExportMode::whiteList) {
|
|
diagnostics << "error: -unexported_symbol cannot be combined "
|
|
<< "with -exported_symbol[s_list]\n";
|
|
return false;
|
|
}
|
|
ctx.setExportMode(MachOLinkingContext::ExportMode::blackList);
|
|
ctx.addExportSymbol(symbol->getValue());
|
|
}
|
|
|
|
// Handle obosolete -multi_module and -single_module
|
|
if (llvm::opt::Arg *mod = parsedArgs->getLastArg(OPT_multi_module,
|
|
OPT_single_module)) {
|
|
if (mod->getOption().getID() == OPT_multi_module) {
|
|
diagnostics << "warning: -multi_module is obsolete and being ignored\n";
|
|
}
|
|
else {
|
|
if (ctx.outputMachOType() != llvm::MachO::MH_DYLIB) {
|
|
diagnostics << "-single_module only used when creating a dylib\n";
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Handle -pie or -no_pie
|
|
if (llvm::opt::Arg *pie = parsedArgs->getLastArg(OPT_pie, OPT_no_pie)) {
|
|
switch (ctx.outputMachOType()) {
|
|
case llvm::MachO::MH_EXECUTE:
|
|
switch (ctx.os()) {
|
|
case MachOLinkingContext::OS::macOSX:
|
|
if ((minOSVersion < 0x000A0500) &&
|
|
(pie->getOption().getID() == OPT_pie)) {
|
|
diagnostics << "-pie can only be used when targeting "
|
|
"Mac OS X 10.5 or later\n";
|
|
return false;
|
|
}
|
|
break;
|
|
case MachOLinkingContext::OS::iOS:
|
|
if ((minOSVersion < 0x00040200) &&
|
|
(pie->getOption().getID() == OPT_pie)) {
|
|
diagnostics << "-pie can only be used when targeting "
|
|
"iOS 4.2 or later\n";
|
|
return false;
|
|
}
|
|
break;
|
|
case MachOLinkingContext::OS::iOS_simulator:
|
|
if (pie->getOption().getID() == OPT_no_pie)
|
|
diagnostics << "iOS simulator programs must be built PIE\n";
|
|
return false;
|
|
break;
|
|
case MachOLinkingContext::OS::unknown:
|
|
break;
|
|
}
|
|
ctx.setPIE(pie->getOption().getID() == OPT_pie);
|
|
break;
|
|
case llvm::MachO::MH_PRELOAD:
|
|
break;
|
|
case llvm::MachO::MH_DYLIB:
|
|
case llvm::MachO::MH_BUNDLE:
|
|
diagnostics << "warning: " << pie->getSpelling() << " being ignored. "
|
|
<< "It is only used when linking main executables\n";
|
|
break;
|
|
default:
|
|
diagnostics << pie->getSpelling()
|
|
<< " can only used when linking main executables\n";
|
|
return false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Handle input files
|
|
for (auto &arg : *parsedArgs) {
|
|
bool upward;
|
|
ErrorOr<StringRef> resolvedPath = StringRef();
|
|
switch (arg->getOption().getID()) {
|
|
default:
|
|
continue;
|
|
case OPT_INPUT:
|
|
addFile(arg->getValue(), inputGraph, ctx, globalWholeArchive, false);
|
|
break;
|
|
case OPT_upward_library:
|
|
addFile(arg->getValue(), inputGraph, ctx, false, true);
|
|
break;
|
|
case OPT_l:
|
|
case OPT_upward_l:
|
|
upward = (arg->getOption().getID() == OPT_upward_l);
|
|
resolvedPath = ctx.searchLibrary(arg->getValue());
|
|
if (!resolvedPath) {
|
|
diagnostics << "Unable to find library for " << arg->getSpelling()
|
|
<< arg->getValue() << "\n";
|
|
return false;
|
|
} else if (ctx.testingFileUsage()) {
|
|
diagnostics << "Found " << (upward ? "upward " : " ") << "library "
|
|
<< canonicalizePath(resolvedPath.get()) << '\n';
|
|
}
|
|
addFile(resolvedPath.get(), inputGraph, ctx, globalWholeArchive, upward);
|
|
break;
|
|
case OPT_framework:
|
|
case OPT_upward_framework:
|
|
upward = (arg->getOption().getID() == OPT_upward_framework);
|
|
resolvedPath = ctx.findPathForFramework(arg->getValue());
|
|
if (!resolvedPath) {
|
|
diagnostics << "Unable to find framework for "
|
|
<< arg->getSpelling() << " " << arg->getValue() << "\n";
|
|
return false;
|
|
} else if (ctx.testingFileUsage()) {
|
|
diagnostics << "Found " << (upward ? "upward " : " ") << "framework "
|
|
<< canonicalizePath(resolvedPath.get()) << '\n';
|
|
}
|
|
addFile(resolvedPath.get(), inputGraph, ctx, globalWholeArchive, upward);
|
|
break;
|
|
case OPT_filelist:
|
|
if (std::error_code ec = parseFileList(arg->getValue(), inputGraph,
|
|
ctx, globalWholeArchive,
|
|
diagnostics)) {
|
|
diagnostics << "error: " << ec.message()
|
|
<< ", processing '-filelist " << arg->getValue()
|
|
<< "'\n";
|
|
return false;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!inputGraph->size()) {
|
|
diagnostics << "No input files\n";
|
|
return false;
|
|
}
|
|
|
|
ctx.setInputGraph(std::move(inputGraph));
|
|
|
|
// Validate the combination of options used.
|
|
return ctx.validate(diagnostics);
|
|
}
|
|
|
|
|
|
} // namespace lld
|