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diff --git a/lib/Driver/DarwinLdDriver.cpp b/lib/Driver/DarwinLdDriver.cpp
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+//===- lib/Driver/DarwinLdDriver.cpp --------------------------------------===//
+//
+// The LLVM Linker
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+///
+/// Concrete instance of the Driver for darwin's ld.
+///
+//===----------------------------------------------------------------------===//
+
+#include "lld/Core/File.h"
+#include "lld/Core/ArchiveLibraryFile.h"
+#include "lld/Core/SharedLibraryFile.h"
+#include "lld/Driver/Driver.h"
+#include "lld/ReaderWriter/MachOLinkingContext.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Option/Arg.h"
+#include "llvm/Option/Option.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/MachO.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/raw_ostream.h"
+#include <algorithm>
+
+using namespace lld;
+
+namespace {
+
+// Create enum with OPT_xxx values for each option in DarwinLdOptions.td
+enum {
+ OPT_INVALID = 0,
+#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
+ HELP, META) \
+ OPT_##ID,
+#include "DarwinLdOptions.inc"
+#undef OPTION
+};
+
+// Create prefix string literals used in DarwinLdOptions.td
+#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
+#include "DarwinLdOptions.inc"
+#undef PREFIX
+
+// Create table mapping all options defined in DarwinLdOptions.td
+static const llvm::opt::OptTable::Info infoTable[] = {
+#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \
+ HELPTEXT, METAVAR) \
+ { PREFIX, NAME, HELPTEXT, METAVAR, OPT_##ID, llvm::opt::Option::KIND##Class, \
+ PARAM, FLAGS, OPT_##GROUP, OPT_##ALIAS, ALIASARGS },
+#include "DarwinLdOptions.inc"
+#undef OPTION
+};
+
+// Create OptTable class for parsing actual command line arguments
+class DarwinLdOptTable : public llvm::opt::OptTable {
+public:
+ DarwinLdOptTable() : OptTable(infoTable, llvm::array_lengthof(infoTable)){}
+};
+
+std::vector<std::unique_ptr<File>>
+loadFile(MachOLinkingContext &ctx, StringRef path,
+ raw_ostream &diag, bool wholeArchive, bool upwardDylib) {
+ if (ctx.logInputFiles())
+ diag << path << "\n";
+
+ ErrorOr<std::unique_ptr<MemoryBuffer>> mbOrErr = ctx.getMemoryBuffer(path);
+ if (std::error_code ec = mbOrErr.getError())
+ return makeErrorFile(path, ec);
+ std::vector<std::unique_ptr<File>> files;
+ if (std::error_code ec = ctx.registry().loadFile(std::move(mbOrErr.get()), files))
+ return makeErrorFile(path, ec);
+ for (std::unique_ptr<File> &pf : files) {
+ // If file is a dylib, inform LinkingContext about it.
+ if (SharedLibraryFile *shl = dyn_cast<SharedLibraryFile>(pf.get())) {
+ if (std::error_code ec = shl->parse())
+ return makeErrorFile(path, ec);
+ ctx.registerDylib(reinterpret_cast<mach_o::MachODylibFile*>(shl),
+ upwardDylib);
+ }
+ }
+ if (wholeArchive)
+ return parseMemberFiles(files);
+ return files;
+}
+
+} // anonymous namespace
+
+// Test may be running on Windows. Canonicalize the path
+// separator to '/' to get consistent outputs for tests.
+static std::string canonicalizePath(StringRef path) {
+ char sep = llvm::sys::path::get_separator().front();
+ if (sep != '/') {
+ std::string fixedPath = path;
+ std::replace(fixedPath.begin(), fixedPath.end(), sep, '/');
+ return fixedPath;
+ } else {
+ return path;
+ }
+}
+
+static void addFile(StringRef path, MachOLinkingContext &ctx,
+ bool loadWholeArchive,
+ bool upwardDylib, raw_ostream &diag) {
+ std::vector<std::unique_ptr<File>> files =
+ loadFile(ctx, path, diag, loadWholeArchive, upwardDylib);
+ for (std::unique_ptr<File> &file : files)
+ ctx.getNodes().push_back(llvm::make_unique<FileNode>(std::move(file)));
+}
+
+// Export lists are one symbol per line. Blank lines are ignored.
+// Trailing comments start with #.
+static std::error_code parseExportsList(StringRef exportFilePath,
+ MachOLinkingContext &ctx,
+ raw_ostream &diagnostics) {
+ // Map in export list file.
+ ErrorOr<std::unique_ptr<MemoryBuffer>> mb =
+ MemoryBuffer::getFileOrSTDIN(exportFilePath);
+ if (std::error_code ec = mb.getError())
+ return ec;
+ ctx.addInputFileDependency(exportFilePath);
+ StringRef buffer = mb->get()->getBuffer();
+ while (!buffer.empty()) {
+ // Split off each line in the file.
+ std::pair<StringRef, StringRef> lineAndRest = buffer.split('\n');
+ StringRef line = lineAndRest.first;
+ // Ignore trailing # comments.
+ std::pair<StringRef, StringRef> symAndComment = line.split('#');
+ StringRef sym = symAndComment.first.trim();
+ if (!sym.empty())
+ ctx.addExportSymbol(sym);
+ buffer = lineAndRest.second;
+ }
+ return std::error_code();
+}
+
+
+
+/// Order files are one symbol per line. Blank lines are ignored.
+/// Trailing comments start with #. Symbol names can be prefixed with an
+/// architecture name and/or .o leaf name. Examples:
+/// _foo
+/// bar.o:_bar
+/// libfrob.a(bar.o):_bar
+/// x86_64:_foo64
+static std::error_code parseOrderFile(StringRef orderFilePath,
+ MachOLinkingContext &ctx,
+ raw_ostream &diagnostics) {
+ // Map in order file.
+ ErrorOr<std::unique_ptr<MemoryBuffer>> mb =
+ MemoryBuffer::getFileOrSTDIN(orderFilePath);
+ if (std::error_code ec = mb.getError())
+ return ec;
+ ctx.addInputFileDependency(orderFilePath);
+ StringRef buffer = mb->get()->getBuffer();
+ while (!buffer.empty()) {
+ // Split off each line in the file.
+ std::pair<StringRef, StringRef> lineAndRest = buffer.split('\n');
+ StringRef line = lineAndRest.first;
+ buffer = lineAndRest.second;
+ // Ignore trailing # comments.
+ std::pair<StringRef, StringRef> symAndComment = line.split('#');
+ if (symAndComment.first.empty())
+ continue;
+ StringRef sym = symAndComment.first.trim();
+ if (sym.empty())
+ continue;
+ // Check for prefix.
+ StringRef prefix;
+ std::pair<StringRef, StringRef> prefixAndSym = sym.split(':');
+ if (!prefixAndSym.second.empty()) {
+ sym = prefixAndSym.second;
+ prefix = prefixAndSym.first;
+ if (!prefix.endswith(".o") && !prefix.endswith(".o)")) {
+ // If arch name prefix does not match arch being linked, ignore symbol.
+ if (!ctx.archName().equals(prefix))
+ continue;
+ prefix = "";
+ }
+ } else
+ sym = prefixAndSym.first;
+ if (!sym.empty()) {
+ ctx.appendOrderedSymbol(sym, prefix);
+ //llvm::errs() << sym << ", prefix=" << prefix << "\n";
+ }
+ }
+ return std::error_code();
+}
+
+//
+// There are two variants of the -filelist option:
+//
+// -filelist <path>
+// In this variant, the path is to a text file which contains one file path
+// per line. There are no comments or trimming of whitespace.
+//
+// -fileList <path>,<dir>
+// In this variant, the path is to a text file which contains a partial path
+// per line. The <dir> prefix is prepended to each partial path.
+//
+static std::error_code loadFileList(StringRef fileListPath,
+ MachOLinkingContext &ctx, bool forceLoad,
+ raw_ostream &diagnostics) {
+ // If there is a comma, split off <dir>.
+ std::pair<StringRef, StringRef> opt = fileListPath.split(',');
+ StringRef filePath = opt.first;
+ StringRef dirName = opt.second;
+ ctx.addInputFileDependency(filePath);
+ // Map in file list file.
+ ErrorOr<std::unique_ptr<MemoryBuffer>> mb =
+ MemoryBuffer::getFileOrSTDIN(filePath);
+ if (std::error_code ec = mb.getError())
+ return ec;
+ StringRef buffer = mb->get()->getBuffer();
+ while (!buffer.empty()) {
+ // Split off each line in the file.
+ std::pair<StringRef, StringRef> lineAndRest = buffer.split('\n');
+ StringRef line = lineAndRest.first;
+ StringRef path;
+ if (!dirName.empty()) {
+ // If there is a <dir> then prepend dir to each line.
+ SmallString<256> fullPath;
+ fullPath.assign(dirName);
+ llvm::sys::path::append(fullPath, Twine(line));
+ path = ctx.copy(fullPath.str());
+ } else {
+ // No <dir> use whole line as input file path.
+ path = ctx.copy(line);
+ }
+ if (!ctx.pathExists(path)) {
+ return make_dynamic_error_code(Twine("File not found '")
+ + path
+ + "'");
+ }
+ if (ctx.testingFileUsage()) {
+ diagnostics << "Found filelist entry " << canonicalizePath(path) << '\n';
+ }
+ addFile(path, ctx, forceLoad, false, diagnostics);
+ buffer = lineAndRest.second;
+ }
+ return std::error_code();
+}
+
+/// Parse number assuming it is base 16, but allow 0x prefix.
+static bool parseNumberBase16(StringRef numStr, uint64_t &baseAddress) {
+ if (numStr.startswith_lower("0x"))
+ numStr = numStr.drop_front(2);
+ return numStr.getAsInteger(16, baseAddress);
+}
+
+namespace lld {
+
+bool DarwinLdDriver::linkMachO(int argc, const char *argv[],
+ raw_ostream &diagnostics) {
+ MachOLinkingContext ctx;
+ if (!parse(argc, argv, ctx, diagnostics))
+ return false;
+ if (ctx.doNothing())
+ return true;
+ return link(ctx, diagnostics);
+}
+
+bool DarwinLdDriver::parse(int argc, const char *argv[],
+ MachOLinkingContext &ctx, raw_ostream &diagnostics) {
+ // Parse command line options using DarwinLdOptions.td
+ std::unique_ptr<llvm::opt::InputArgList> parsedArgs;
+ DarwinLdOptTable table;
+ unsigned missingIndex;
+ unsigned missingCount;
+ bool globalWholeArchive = false;
+ parsedArgs.reset(
+ table.ParseArgs(&argv[1], &argv[argc], missingIndex, missingCount));
+ if (missingCount) {
+ diagnostics << "error: missing arg value for '"
+ << parsedArgs->getArgString(missingIndex) << "' expected "
+ << missingCount << " argument(s).\n";
+ return false;
+ }
+
+ for (auto unknownArg : parsedArgs->filtered(OPT_UNKNOWN)) {
+ diagnostics << "warning: ignoring unknown argument: "
+ << unknownArg->getAsString(*parsedArgs) << "\n";
+ }
+
+ // Figure out output kind ( -dylib, -r, -bundle, -preload, or -static )
+ llvm::MachO::HeaderFileType fileType = llvm::MachO::MH_EXECUTE;
+ if ( llvm::opt::Arg *kind = parsedArgs->getLastArg(OPT_dylib, OPT_relocatable,
+ OPT_bundle, OPT_static, OPT_preload)) {
+ switch (kind->getOption().getID()) {
+ case OPT_dylib:
+ fileType = llvm::MachO::MH_DYLIB;
+ break;
+ case OPT_relocatable:
+ fileType = llvm::MachO::MH_OBJECT;
+ break;
+ case OPT_bundle:
+ fileType = llvm::MachO::MH_BUNDLE;
+ break;
+ case OPT_static:
+ fileType = llvm::MachO::MH_EXECUTE;
+ break;
+ case OPT_preload:
+ fileType = llvm::MachO::MH_PRELOAD;
+ break;
+ }
+ }
+
+ // Handle -arch xxx
+ MachOLinkingContext::Arch arch = MachOLinkingContext::arch_unknown;
+ if (llvm::opt::Arg *archStr = parsedArgs->getLastArg(OPT_arch)) {
+ arch = MachOLinkingContext::archFromName(archStr->getValue());
+ if (arch == MachOLinkingContext::arch_unknown) {
+ diagnostics << "error: unknown arch named '" << archStr->getValue()
+ << "'\n";
+ return false;
+ }
+ }
+ // If no -arch specified, scan input files to find first non-fat .o file.
+ if (arch == MachOLinkingContext::arch_unknown) {
+ for (auto &inFile: parsedArgs->filtered(OPT_INPUT)) {
+ // This is expensive because it opens and maps the file. But that is
+ // ok because no -arch is rare.
+ if (MachOLinkingContext::isThinObjectFile(inFile->getValue(), arch))
+ break;
+ }
+ if (arch == MachOLinkingContext::arch_unknown
+ && !parsedArgs->getLastArg(OPT_test_file_usage)) {
+ // If no -arch and no options at all, print usage message.
+ if (parsedArgs->size() == 0)
+ table.PrintHelp(llvm::outs(), argv[0], "LLVM Linker", false);
+ else
+ diagnostics << "error: -arch not specified and could not be inferred\n";
+ return false;
+ }
+ }
+
+ // Handle -macosx_version_min or -ios_version_min
+ MachOLinkingContext::OS os = MachOLinkingContext::OS::macOSX;
+ uint32_t minOSVersion = 0;
+ if (llvm::opt::Arg *minOS =
+ parsedArgs->getLastArg(OPT_macosx_version_min, OPT_ios_version_min,
+ OPT_ios_simulator_version_min)) {
+ switch (minOS->getOption().getID()) {
+ case OPT_macosx_version_min:
+ os = MachOLinkingContext::OS::macOSX;
+ if (MachOLinkingContext::parsePackedVersion(minOS->getValue(),
+ minOSVersion)) {
+ diagnostics << "error: malformed macosx_version_min value\n";
+ return false;
+ }
+ break;
+ case OPT_ios_version_min:
+ os = MachOLinkingContext::OS::iOS;
+ if (MachOLinkingContext::parsePackedVersion(minOS->getValue(),
+ minOSVersion)) {
+ diagnostics << "error: malformed ios_version_min value\n";
+ return false;
+ }
+ break;
+ case OPT_ios_simulator_version_min:
+ os = MachOLinkingContext::OS::iOS_simulator;
+ if (MachOLinkingContext::parsePackedVersion(minOS->getValue(),
+ minOSVersion)) {
+ diagnostics << "error: malformed ios_simulator_version_min value\n";
+ return false;
+ }
+ break;
+ }
+ } else {
+ // No min-os version on command line, check environment variables
+ }
+
+ // Now that there's enough information parsed in, let the linking context
+ // set up default values.
+ ctx.configure(fileType, arch, os, minOSVersion);
+
+ // Handle -e xxx
+ if (llvm::opt::Arg *entry = parsedArgs->getLastArg(OPT_entry))
+ ctx.setEntrySymbolName(entry->getValue());
+
+ // Handle -o xxx
+ if (llvm::opt::Arg *outpath = parsedArgs->getLastArg(OPT_output))
+ ctx.setOutputPath(outpath->getValue());
+ else
+ ctx.setOutputPath("a.out");
+
+ // Handle -image_base XXX and -seg1addr XXXX
+ if (llvm::opt::Arg *imageBase = parsedArgs->getLastArg(OPT_image_base)) {
+ uint64_t baseAddress;
+ if (parseNumberBase16(imageBase->getValue(), baseAddress)) {
+ diagnostics << "error: image_base expects a hex number\n";
+ return false;
+ } else if (baseAddress < ctx.pageZeroSize()) {
+ diagnostics << "error: image_base overlaps with __PAGEZERO\n";
+ return false;
+ } else if (baseAddress % ctx.pageSize()) {
+ diagnostics << "error: image_base must be a multiple of page size ("
+ << llvm::format("0x%" PRIx64, ctx.pageSize()) << ")\n";
+ return false;
+ }
+
+ ctx.setBaseAddress(baseAddress);
+ }
+
+ // Handle -dead_strip
+ if (parsedArgs->getLastArg(OPT_dead_strip))
+ ctx.setDeadStripping(true);
+
+ // Handle -all_load
+ if (parsedArgs->getLastArg(OPT_all_load))
+ globalWholeArchive = true;
+
+ // Handle -install_name
+ if (llvm::opt::Arg *installName = parsedArgs->getLastArg(OPT_install_name))
+ ctx.setInstallName(installName->getValue());
+ else
+ ctx.setInstallName(ctx.outputPath());
+
+ // Handle -mark_dead_strippable_dylib
+ if (parsedArgs->getLastArg(OPT_mark_dead_strippable_dylib))
+ ctx.setDeadStrippableDylib(true);
+
+ // Handle -compatibility_version and -current_version
+ if (llvm::opt::Arg *vers =
+ parsedArgs->getLastArg(OPT_compatibility_version)) {
+ if (ctx.outputMachOType() != llvm::MachO::MH_DYLIB) {
+ diagnostics
+ << "error: -compatibility_version can only be used with -dylib\n";
+ return false;
+ }
+ uint32_t parsedVers;
+ if (MachOLinkingContext::parsePackedVersion(vers->getValue(), parsedVers)) {
+ diagnostics << "error: -compatibility_version value is malformed\n";
+ return false;
+ }
+ ctx.setCompatibilityVersion(parsedVers);
+ }
+
+ if (llvm::opt::Arg *vers = parsedArgs->getLastArg(OPT_current_version)) {
+ if (ctx.outputMachOType() != llvm::MachO::MH_DYLIB) {
+ diagnostics << "-current_version can only be used with -dylib\n";
+ return false;
+ }
+ uint32_t parsedVers;
+ if (MachOLinkingContext::parsePackedVersion(vers->getValue(), parsedVers)) {
+ diagnostics << "error: -current_version value is malformed\n";
+ return false;
+ }
+ ctx.setCurrentVersion(parsedVers);
+ }
+
+ // Handle -bundle_loader
+ if (llvm::opt::Arg *loader = parsedArgs->getLastArg(OPT_bundle_loader))
+ ctx.setBundleLoader(loader->getValue());
+
+ // Handle -sectalign segname sectname align
+ for (auto &alignArg : parsedArgs->filtered(OPT_sectalign)) {
+ const char* segName = alignArg->getValue(0);
+ const char* sectName = alignArg->getValue(1);
+ const char* alignStr = alignArg->getValue(2);
+ if ((alignStr[0] == '0') && (alignStr[1] == 'x'))
+ alignStr += 2;
+ unsigned long long alignValue;
+ if (llvm::getAsUnsignedInteger(alignStr, 16, alignValue)) {
+ diagnostics << "error: -sectalign alignment value '"
+ << alignStr << "' not a valid number\n";
+ return false;
+ }
+ uint8_t align2 = llvm::countTrailingZeros(alignValue);
+ if ( (unsigned long)(1 << align2) != alignValue ) {
+ diagnostics << "warning: alignment for '-sectalign "
+ << segName << " " << sectName
+ << llvm::format(" 0x%llX", alignValue)
+ << "' is not a power of two, using "
+ << llvm::format("0x%08X", (1 << align2)) << "\n";
+ }
+ ctx.addSectionAlignment(segName, sectName, align2);
+ }
+
+ // Handle -mllvm
+ for (auto &llvmArg : parsedArgs->filtered(OPT_mllvm)) {
+ ctx.appendLLVMOption(llvmArg->getValue());
+ }
+
+ // Handle -print_atoms
+ if (parsedArgs->getLastArg(OPT_print_atoms))
+ ctx.setPrintAtoms();
+
+ // Handle -t (trace) option.
+ if (parsedArgs->getLastArg(OPT_t))
+ ctx.setLogInputFiles(true);
+
+ // Handle -demangle option.
+ if (parsedArgs->getLastArg(OPT_demangle))
+ ctx.setDemangleSymbols(true);
+
+ // Handle -keep_private_externs
+ if (parsedArgs->getLastArg(OPT_keep_private_externs)) {
+ ctx.setKeepPrivateExterns(true);
+ if (ctx.outputMachOType() != llvm::MachO::MH_OBJECT)
+ diagnostics << "warning: -keep_private_externs only used in -r mode\n";
+ }
+
+ // Handle -dependency_info <path> used by Xcode.
+ if (llvm::opt::Arg *depInfo = parsedArgs->getLastArg(OPT_dependency_info)) {
+ if (std::error_code ec = ctx.createDependencyFile(depInfo->getValue())) {
+ diagnostics << "warning: " << ec.message()
+ << ", processing '-dependency_info "
+ << depInfo->getValue()
+ << "'\n";
+ }
+ }
+
+ // In -test_file_usage mode, we'll be given an explicit list of paths that
+ // exist. We'll also be expected to print out information about how we located
+ // libraries and so on that the user specified, but not to actually do any
+ // linking.
+ if (parsedArgs->getLastArg(OPT_test_file_usage)) {
+ ctx.setTestingFileUsage();
+
+ // With paths existing by fiat, linking is not going to end well.
+ ctx.setDoNothing(true);
+
+ // Only bother looking for an existence override if we're going to use it.
+ for (auto existingPath : parsedArgs->filtered(OPT_path_exists)) {
+ ctx.addExistingPathForDebug(existingPath->getValue());
+ }
+ }
+
+ // Register possible input file parsers.
+ if (!ctx.doNothing()) {
+ ctx.registry().addSupportMachOObjects(ctx);
+ ctx.registry().addSupportArchives(ctx.logInputFiles());
+ ctx.registry().addSupportNativeObjects();
+ ctx.registry().addSupportYamlFiles();
+ }
+
+ // Now construct the set of library search directories, following ld64's
+ // baroque set of accumulated hacks. Mostly, the algorithm constructs
+ // { 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;
+ 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 << "warning: -single_module being ignored. "
+ "It is only for use when producing a dylib\n";
+ }
+ }
+ }
+
+ // 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 debug info handling options: -S
+ if (parsedArgs->hasArg(OPT_S))
+ ctx.setDebugInfoMode(MachOLinkingContext::DebugInfoMode::noDebugMap);
+
+ // Handle -order_file <file>
+ for (auto orderFile : parsedArgs->filtered(OPT_order_file)) {
+ if (std::error_code ec = parseOrderFile(orderFile->getValue(), ctx,
+ diagnostics)) {
+ diagnostics << "error: " << ec.message()
+ << ", processing '-order_file "
+ << orderFile->getValue()
+ << "'\n";
+ return false;
+ }
+ }
+
+ // Handle -rpath <path>
+ if (parsedArgs->hasArg(OPT_rpath)) {
+ switch (ctx.outputMachOType()) {
+ case llvm::MachO::MH_EXECUTE:
+ case llvm::MachO::MH_DYLIB:
+ case llvm::MachO::MH_BUNDLE:
+ if (!ctx.minOS("10.5", "2.0")) {
+ if (ctx.os() == MachOLinkingContext::OS::macOSX) {
+ diagnostics << "error: -rpath can only be used when targeting "
+ "OS X 10.5 or later\n";
+ } else {
+ diagnostics << "error: -rpath can only be used when targeting "
+ "iOS 2.0 or later\n";
+ }
+ return false;
+ }
+ break;
+ default:
+ diagnostics << "error: -rpath can only be used when creating "
+ "a dynamic final linked image\n";
+ return false;
+ }
+
+ for (auto rPath : parsedArgs->filtered(OPT_rpath)) {
+ ctx.addRpath(rPath->getValue());
+ }
+ }
+
+ // 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(), ctx, globalWholeArchive, false, diagnostics);
+ break;
+ case OPT_upward_library:
+ addFile(arg->getValue(), ctx, false, true, diagnostics);
+ break;
+ case OPT_force_load:
+ addFile(arg->getValue(), ctx, true, false, diagnostics);
+ 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(), ctx, globalWholeArchive, upward, diagnostics);
+ 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(), ctx, globalWholeArchive, upward, diagnostics);
+ break;
+ case OPT_filelist:
+ if (std::error_code ec = loadFileList(arg->getValue(),
+ ctx, globalWholeArchive,
+ diagnostics)) {
+ diagnostics << "error: " << ec.message()
+ << ", processing '-filelist " << arg->getValue()
+ << "'\n";
+ return false;
+ }
+ break;
+ }
+ }
+
+ if (ctx.getNodes().empty()) {
+ diagnostics << "No input files\n";
+ return false;
+ }
+
+ // Validate the combination of options used.
+ return ctx.validate(diagnostics);
+}
+
+
+} // namespace lld
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-08 05:17:55 +0000