[lld] 7df80e3 - [lld-macho] Specify the complete set of command-line options for ld64
Shoaib Meenai via llvm-commits
llvm-commits at lists.llvm.org
Mon Jun 15 12:50:58 PDT 2020
Author: Greg McGary
Date: 2020-06-15T12:50:20-07:00
New Revision: 7df80e3f23bd6cd7512e8a38ef5db968bad207d6
URL: https://github.com/llvm/llvm-project/commit/7df80e3f23bd6cd7512e8a38ef5db968bad207d6
DIFF: https://github.com/llvm/llvm-project/commit/7df80e3f23bd6cd7512e8a38ef5db968bad207d6.diff
LOG: [lld-macho] Specify the complete set of command-line options for ld64
This is a complete Options.td compiled from ld(1) dated 2018-03-07 and
cross checked with ld64 source code version 512.4 dated 2018-03-18.
This is the first in a series of diffs for argument handling. Follow-ups
will include switch cases for all the new instances of `OPT_foo`, and
parsing/validation of arguments attached to options, e.g., more code
akin to `OPT_platform_version` and associated `parsePlatformVersion()`.
Reviewed By: smeenai
Differential Revision: https://reviews.llvm.org/D80582
Added:
Modified:
lld/MachO/Driver.cpp
lld/MachO/Driver.h
lld/MachO/Options.td
lld/test/MachO/platform-version.test
llvm/include/llvm/Option/Option.h
Removed:
################################################################################
diff --git a/lld/MachO/Driver.cpp b/lld/MachO/Driver.cpp
index d57e0fe937e9..1bc18cb0c1b7 100644
--- a/lld/MachO/Driver.cpp
+++ b/lld/MachO/Driver.cpp
@@ -37,6 +37,7 @@
using namespace llvm;
using namespace llvm::MachO;
using namespace llvm::sys;
+using namespace llvm::opt;
using namespace lld;
using namespace lld::macho;
@@ -74,6 +75,12 @@ opt::InputArgList MachOOptTable::parse(ArrayRef<const char *> argv) {
return args;
}
+void MachOOptTable::printHelp(const char *argv0, bool showHidden) const {
+ PrintHelp(lld::outs(), (std::string(argv0) + " [options] file...").c_str(),
+ "LLVM Linker", showHidden);
+ lld::outs() << "\n";
+}
+
static Optional<std::string> findLibrary(StringRef name) {
std::string stub = (llvm::Twine("lib") + name + ".tbd").str();
std::string shared = (llvm::Twine("lib") + name + ".dylib").str();
@@ -259,15 +266,41 @@ static bool markSubLibrary(StringRef searchName) {
return false;
}
-static void handlePlatformVersion(opt::ArgList::iterator &it,
- const opt::ArgList::iterator &end) {
- // -platform_version takes 3 args, which LLVM's option library doesn't
- // support directly. So this explicitly handles that.
- // FIXME: stash skipped args for later use.
- for (int i = 0; i < 3; ++i) {
- ++it;
- if (it == end || (*it)->getOption().getID() != OPT_INPUT)
- fatal("usage: -platform_version platform min_version sdk_version");
+static void handlePlatformVersion(const opt::Arg *arg) {
+ // TODO: implementation coming very soon ...
+}
+
+static void warnIfDeprecatedOption(const opt::Option &opt) {
+ if (!opt.getGroup().isValid())
+ return;
+ if (opt.getGroup().getID() == OPT_grp_deprecated) {
+ warn("Option `" + opt.getPrefixedName() + "' is deprecated in ld64:");
+ warn(opt.getHelpText());
+ }
+}
+
+static void warnIfUnimplementedOption(const opt::Option &opt) {
+ if (!opt.getGroup().isValid())
+ return;
+ switch (opt.getGroup().getID()) {
+ case OPT_grp_deprecated:
+ // warn about deprecated options elsewhere
+ break;
+ case OPT_grp_undocumented:
+ warn("Option `" + opt.getPrefixedName() +
+ "' is undocumented. Should lld implement it?");
+ break;
+ case OPT_grp_obsolete:
+ warn("Option `" + opt.getPrefixedName() +
+ "' is obsolete. Please modernize your usage.");
+ break;
+ case OPT_grp_ignored:
+ warn("Option `" + opt.getPrefixedName() + "' is ignored.");
+ break;
+ default:
+ warn("Option `" + opt.getPrefixedName() +
+ "' is not yet implemented. Stay tuned...");
+ break;
}
}
@@ -282,6 +315,14 @@ bool macho::link(llvm::ArrayRef<const char *> argsArr, bool canExitEarly,
MachOOptTable parser;
opt::InputArgList args = parser.parse(argsArr.slice(1));
+ if (args.hasArg(OPT_help_hidden)) {
+ parser.printHelp(argsArr[0], /*showHidden=*/true);
+ return true;
+ } else if (args.hasArg(OPT_help)) {
+ parser.printHelp(argsArr[0], /*showHidden=*/false);
+ return true;
+ }
+
config = make<Configuration>();
symtab = make<SymbolTable>();
target = createTargetInfo(args);
@@ -302,9 +343,9 @@ bool macho::link(llvm::ArrayRef<const char *> argsArr, bool canExitEarly,
return !errorCount();
}
- for (opt::ArgList::iterator it = args.begin(), end = args.end(); it != end;
- ++it) {
- const opt::Arg *arg = *it;
+ for (const auto &arg : args) {
+ const auto &opt = arg->getOption();
+ warnIfDeprecatedOption(opt);
switch (arg->getOption().getID()) {
case OPT_INPUT:
addFile(arg->getValue());
@@ -318,10 +359,20 @@ bool macho::link(llvm::ArrayRef<const char *> argsArr, bool canExitEarly,
error("library not found for -l" + name);
break;
}
- case OPT_platform_version: {
- handlePlatformVersion(it, end); // Can advance "it".
+ case OPT_platform_version:
+ handlePlatformVersion(arg);
+ break;
+ case OPT_o:
+ case OPT_dylib:
+ case OPT_e:
+ case OPT_L:
+ case OPT_Z:
+ case OPT_arch:
+ // handled elsewhere
+ break;
+ default:
+ warnIfUnimplementedOption(opt);
break;
- }
}
}
diff --git a/lld/MachO/Driver.h b/lld/MachO/Driver.h
index 142f00d2e80c..2233740d1db8 100644
--- a/lld/MachO/Driver.h
+++ b/lld/MachO/Driver.h
@@ -19,6 +19,7 @@ class MachOOptTable : public llvm::opt::OptTable {
public:
MachOOptTable();
llvm::opt::InputArgList parse(ArrayRef<const char *> argv);
+ void printHelp(const char *argv0, bool showHidden) const;
};
// Create enum with OPT_xxx values for each option in Options.td
diff --git a/lld/MachO/Options.td b/lld/MachO/Options.td
index 6b8036d469aa..f568191517a2 100644
--- a/lld/MachO/Options.td
+++ b/lld/MachO/Options.td
@@ -1,43 +1,1297 @@
include "llvm/Option/OptParser.td"
-def L: JoinedOrSeparate<["-"], "L">, MetaVarName<"<dir>">,
- HelpText<"Add directory to library search path">;
+def help : Flag<["-", "--"], "help">;
+def help_hidden : Flag<["--"], "help-hidden">,
+ HelpText<"Display help for hidden options">;
-def Z: Flag<["-"], "Z">,
- HelpText<"Do not add standard directories to library search path">;
+// This is a complete Options.td compiled from Apple's ld(1) manpage
+// dated 2018-03-07 and cross checked with ld64 source code in repo
+// https://github.com/apple-opensource/ld64 at git tag "512.4" dated
+// 2018-03-18.
-def arch: Separate<["-"], "arch">, MetaVarName<"<arch-name>">,
- HelpText<"Architecture to link">;
+// Flags<[HelpHidden]> marks options that are not yet ported to lld,
+// and serve as a scoreboard for annotating our progress toward
+// implementing ld64 options in lld. As you add implementions to
+// Driver.cpp, please remove the hidden flag here.
-def dylib: Flag<["-"], "dylib">, HelpText<"Emit a shared library">;
+def grp_kind : OptionGroup<"kind">, HelpText<"OUTPUT KIND">;
-def e: Separate<["-"], "e">, HelpText<"Name of entry point symbol">;
+def execute : Flag<["-"], "execute">,
+ HelpText<"Produce a main executable (default)">,
+ Flags<[HelpHidden]>,
+ Group<grp_kind>;
+def dylib : Flag<["-"], "dylib">,
+ HelpText<"Produce a shared library">,
+ Group<grp_kind>;
+def bundle : Flag<["-"], "bundle">,
+ HelpText<"Produce a bundle">,
+ Flags<[HelpHidden]>,
+ Group<grp_kind>;
+def r : Flag<["-"], "r">,
+ HelpText<"Merge multiple object files into one, retaining relocations">,
+ Flags<[HelpHidden]>,
+ Group<grp_kind>;
+def dylinker : Flag<["-"], "dylinker">,
+ HelpText<"Produce a dylinker only used when building dyld">,
+ Flags<[HelpHidden]>,
+ Group<grp_kind>;
+def dynamic : Flag<["-"], "dynamic">,
+ HelpText<"Link dynamically (default)">,
+ Flags<[HelpHidden]>,
+ Group<grp_kind>;
+def static : Flag<["-"], "static">,
+ HelpText<"Link statically">,
+ Flags<[HelpHidden]>,
+ Group<grp_kind>;
+def preload : Flag<["-"], "preload">,
+ HelpText<"Produce an unsegmented binary for embedded systems">,
+ Flags<[HelpHidden]>,
+ Group<grp_kind>;
+def arch : Separate<["-"], "arch">,
+ MetaVarName<"<arch_name>">,
+ HelpText<"The architecture (e.g. ppc, ppc64, i386, x86_64)">,
+ Group<grp_kind>;
+def o : Separate<["-"], "o">,
+ MetaVarName<"<path>">,
+ HelpText<"The name of the output file (default: `a.out')">,
+ Group<grp_kind>;
-def install_name: Separate<["-"], "install_name">,
- MetaVarName<"<install-name>">,
- HelpText<"Set the install path of the dynamic library.">;
+def grp_libs : OptionGroup<"libs">, HelpText<"LIBRARIES">;
-def l: Joined<["-"], "l">, MetaVarName<"<libname>">,
- HelpText<"Base name of library searched for in -L directories">;
+def l : Joined<["-"], "l">,
+ MetaVarName<"<name>">,
+ HelpText<"Search for lib<name>.dylib or lib<name>.a on the library search path">,
+ Group<grp_libs>;
+def weak_l : Joined<["-"], "weak-l">,
+ MetaVarName<"<name>">,
+ HelpText<"Like -l<name>, but mark library and its references as weak imports">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def weak_library : Separate<["-"], "weak_library">,
+ MetaVarName<"<path>">,
+ HelpText<"Like bare <path>, but mark library and its references as weak imports">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def reexport_l : Joined<["-"], "reexport-l">,
+ MetaVarName<"<name>">,
+ HelpText<"Like -l<name>, but export all symbols of <name> from newly created library">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def reexport_library : Separate<["-"], "reexport_library">,
+ MetaVarName<"<path>">,
+ HelpText<"Like bare <path>, but export all symbols of <path> from newly created library">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def upward_l : Joined<["-"], "upward-l">,
+ MetaVarName<"<name>">,
+ HelpText<"Like -l<name>, but specify dylib as an upward dependency">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def upward_library : Separate<["-"], "upward_library">,
+ MetaVarName<"<path>">,
+ HelpText<"Like bare <path>, but specify dylib as an upward dependency">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def L : JoinedOrSeparate<["-"], "L">,
+ MetaVarName<"<dir>">,
+ HelpText<"Add dir to the library search path">,
+ Group<grp_libs>;
+def Z : Flag<["-"], "Z">,
+ HelpText<"Remove standard directories from the library and framework search paths">,
+ Group<grp_libs>;
+def syslibroot : Separate<["-"], "syslibroot">,
+ MetaVarName<"<rootdir>">,
+ HelpText<"Prepend <rootdir> to all library and framework search paths">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def search_paths_first : Flag<["-"], "search_paths_first">,
+ HelpText<"Search for lib<name>.dylib and lib<name>.a at each step in traversing search path (default for Xcode 4 and later)">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def search_dylibs_first : Flag<["-"], "search_dylibs_first">,
+ HelpText<"Search for lib<name>.dylib on first pass, then for lib<name>.a on second pass through search path (default for Xcode 3 and earlier)">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def framework : Separate<["-"], "framework">,
+ MetaVarName<"<name>">,
+ HelpText<"Search for <name>.framework/<name> on the framework search path">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def weak_framework : Separate<["-"], "weak_framework">,
+ MetaVarName<"<name>">,
+ HelpText<"Like -framework <name>, but mark framework and its references as weak imports">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def reexport_framework : Separate<["-"], "reexport_framework">,
+ MetaVarName<"<name>">,
+ HelpText<"Like -framework <name>, but export all symbols of <name> from the newly created library">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def upward_framework : Separate<["-"], "upward_framework">,
+ MetaVarName<"<name>">,
+ HelpText<"Like -framework <name>, but specify the framework as an upward dependency">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def F : JoinedOrSeparate<["-"], "F">,
+ MetaVarName<"<dir>">,
+ HelpText<"Add dir to the framework search path">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def all_load : Flag<["-"], "all_load">,
+ HelpText<"Load all members of all static archive libraries">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def ObjC : Flag<["-"], "ObjC">,
+ HelpText<"Load all members of static archives that are an Objective-C class or category.">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
+def force_load : Separate<["-"], "force_load">,
+ MetaVarName<"<path>">,
+ HelpText<"Load all members static archive library at <path>">,
+ Flags<[HelpHidden]>,
+ Group<grp_libs>;
-def o: Separate<["-"], "o">, MetaVarName<"<path>">,
- HelpText<"Path to file to write output">;
+def grp_content : OptionGroup<"content">, HelpText<"ADDITIONAL CONTENT">;
-def order_file: Separate<["-"], "order_file">,
- HelpText<"Lay out symbols within each section in the order specified by the "
- "order file">;
+def sectcreate : MultiArg<["-"], "sectcreate", 3>,
+ MetaVarName<"<segment> <section> <file>">,
+ HelpText<"Create <section> in <segment> from the contents of <file>">,
+ Flags<[HelpHidden]>,
+ Group<grp_content>;
+def segcreate : MultiArg<["-"], "segcreate", 3>,
+ MetaVarName<"<segment> <section> <file>">,
+ Alias<sectcreate>,
+ HelpText<"Alias for -sectcreate">,
+ Flags<[HelpHidden]>,
+ Group<grp_content>;
+def filelist : Separate<["-"], "filelist">,
+ MetaVarName<"<file>">,
+ HelpText<"Read names of files to link from <file>">,
+ Flags<[HelpHidden]>,
+ Group<grp_content>;
+def dtrace : Separate<["-"], "dtrace">,
+ MetaVarName<"<script>">,
+ HelpText<"Enable DTrace static probes according to declarations in <script>">,
+ Flags<[HelpHidden]>,
+ Group<grp_content>;
-def sub_library: Separate<["-"], "sub_library">, MetaVarName<"<libname>">,
- HelpText<"Re-export the specified dylib">;
+def grp_opts : OptionGroup<"opts">, HelpText<"OPTIMIZATIONS">;
-def v: Flag<["-"], "v">, HelpText<"Display the version number and exit">;
+def dead_strip : Flag<["-"], "dead_strip">,
+ HelpText<"Remove unreachable functions and data">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def order_file : Separate<["-"], "order_file">,
+ MetaVarName<"<file>">,
+ HelpText<"Layout functions and data according to specification in <file>">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def sectorder : MultiArg<["-"], "sectorder", 3>,
+ MetaVarName<"<segname> <sectname> <orderfile>">,
+ HelpText<"Replaced by more general -order_file option">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def no_order_inits : Flag<["-"], "no_order_inits">,
+ HelpText<"Disable default reordering of initializer and terminator functions">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def no_order_data : Flag<["-"], "no_order_data">,
+ HelpText<"Disable default reordering of global data accessed at launch time">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def platform_version : MultiArg<["-"], "platform_version", 3>,
+ MetaVarName<"<platform> <min_version> <sdk_version>">,
+ HelpText<"Platform (e.g., macos, ios, tvos, watchos, bridgeos, mac-catalyst, ios-sim, tvos-sim, watchos-sim, driverkit) and version numbers">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def macos_version_min : Separate<["-"], "macos_version_min">,
+ MetaVarName<"<version>">,
+ HelpText<"Oldest macOS version for which linked output is useable">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def macosx_version_min : Separate<["-"], "macosx_version_min">,
+ MetaVarName<"<version>">,
+ Alias<macos_version_min>,
+ HelpText<"Alias for -macos_version_min">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def ios_version_min : Separate<["-"], "ios_version_min">,
+ MetaVarName<"<version>">,
+ HelpText<"Oldest iOS version for which linked output is useable">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def iphoneos_version_min : Separate<["-"], "iphoneos_version_min">,
+ MetaVarName<"<version>">,
+ Alias<ios_version_min>,
+ HelpText<"Alias for -ios_version_min">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def image_base : Separate<["-"], "image_base">,
+ MetaVarName<"<address>">,
+ HelpText<"Preferred hex load address for a dylib or bundle.">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def seg1addr : Separate<["-"], "seg1addr">,
+ MetaVarName<"<address>">,
+ Alias<image_base>,
+ HelpText<"Alias for -image_base">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def no_implicit_dylibs : Flag<["-"], "no_implicit_dylibs">,
+ HelpText<"Do not optimize public dylib transitive symbol references">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def exported_symbols_order : Separate<["-"], "exported_symbols_order">,
+ MetaVarName<"<file>">,
+ HelpText<"Specify frequently-used symbols in <file> to optimize symbol exports">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def no_zero_fill_sections : Flag<["-"], "no_zero_fill_sections">,
+ HelpText<"Explicitly store zeroed data in the final image">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def merge_zero_fill_sections : Flag<["-"], "merge_zero_fill_sections">,
+ HelpText<"Merge all zeroed data into the __zerofill section">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
+def no_branch_islands : Flag<["-"], "no_branch_islands">,
+ HelpText<"Disable infra for branches beyond the maximum branch distance.">,
+ Flags<[HelpHidden]>,
+ Group<grp_opts>;
-// Ignored options
-def: Flag<["-"], "demangle">;
-def: Flag<["-"], "dynamic">;
-def: Flag<["-"], "no_deduplicate">;
-def: Flag<["-"], "search_paths_first">;
-def platform_version: Flag<["-"], "platform_version">;
-def: Separate<["-"], "lto_library">;
-def: Separate<["-"], "macosx_version_min">;
-def: Separate<["-"], "syslibroot">;
+def grp_dylib : OptionGroup<"dylib">, HelpText<"DYNAMIC LIBRARIES (DYLIB)">;
+
+def install_name : Separate<["-"], "install_name">,
+ MetaVarName<"<name>">,
+ HelpText<"Set an internal install path in a dylib">,
+ Group<grp_dylib>;
+def dylib_install_name : Separate<["-"], "dylib_install_name">,
+ MetaVarName<"<name>">,
+ Alias<install_name>,
+ HelpText<"Alias for -install_name">,
+ Flags<[HelpHidden]>,
+ Group<grp_dylib>;
+def dylinker_install_name : Separate<["-"], "dylinker_install_name">,
+ MetaVarName<"<name>">,
+ Alias<install_name>,
+ HelpText<"Alias for -install_name">,
+ Flags<[HelpHidden]>,
+ Group<grp_dylib>;
+def mark_dead_strippable_dylib : Flag<["-"], "mark_dead_strippable_dylib">,
+ HelpText<"Clients can discard this dylib if it is unreferenced">,
+ Flags<[HelpHidden]>,
+ Group<grp_dylib>;
+def compatibility_version : Separate<["-"], "compatibility_version">,
+ MetaVarName<"<version>">,
+ HelpText<"Compatibility <version> of this library">,
+ Flags<[HelpHidden]>,
+ Group<grp_dylib>;
+def dylib_compatibility_version : Separate<["-"], "dylib_compatibility_version">,
+ MetaVarName<"<version>">,
+ Alias<compatibility_version>,
+ HelpText<"Alias for -compatibility_version">,
+ Flags<[HelpHidden]>,
+ Group<grp_dylib>;
+def current_version : Separate<["-"], "current_version">,
+ MetaVarName<"<version>">,
+ HelpText<"Current <version> of this library">,
+ Flags<[HelpHidden]>,
+ Group<grp_dylib>;
+def dylib_current_version : Separate<["-"], "dylib_current_version">,
+ MetaVarName<"<version>">,
+ Alias<current_version>,
+ HelpText<"Alias for -current_version">,
+ Flags<[HelpHidden]>,
+ Group<grp_dylib>;
+
+def grp_main : OptionGroup<"main">, HelpText<"MAIN EXECUTABLE">;
+
+def pie : Flag<["-"], "pie">,
+ HelpText<"Build a position independent executable (default for macOS 10.7 and later)">,
+ Flags<[HelpHidden]>,
+ Group<grp_main>;
+def no_pie : Flag<["-"], "no_pie">,
+ HelpText<"Do not build a position independent executable (default for macOS 10.6 and earlier)">,
+ Flags<[HelpHidden]>,
+ Group<grp_main>;
+def pagezero_size : Separate<["-"], "pagezero_size">,
+ MetaVarName<"<size>">,
+ HelpText<"Size of unreadable segment at address zero is hex <size> (default is 4KB on 32-bit and 4GB on 64-bit)">,
+ Flags<[HelpHidden]>,
+ Group<grp_main>;
+def stack_size : Separate<["-"], "stack_size">,
+ MetaVarName<"<size>">,
+ HelpText<"Maximum hex stack size for the main thread in a program. (default is 8MB)">,
+ Flags<[HelpHidden]>,
+ Group<grp_main>;
+def allow_stack_execute : Flag<["-"], "allow_stack_execute">,
+ HelpText<"Mark stack segment as executable">,
+ Flags<[HelpHidden]>,
+ Group<grp_main>;
+def export_dynamic : Flag<["-"], "export_dynamic">,
+ HelpText<"Preserve all global symbols during LTO">,
+ Flags<[HelpHidden]>,
+ Group<grp_main>;
+
+def grp_bundle : OptionGroup<"bundle">, HelpText<"CREATING A BUNDLE">;
+
+def bundle_loader : Separate<["-"], "bundle_loader">,
+ MetaVarName<"<executable>">,
+ HelpText<"Resolve undefined symbols from <executable>">,
+ Flags<[HelpHidden]>,
+ Group<grp_bundle>;
+
+def grp_object : OptionGroup<"object">, HelpText<"CREATING AN OBJECT FILE">;
+
+def keep_private_externs : Flag<["-"], "keep_private_externs">,
+ HelpText<"Do not convert private external symbols to static symbols">,
+ Flags<[HelpHidden]>,
+ Group<grp_object>;
+def d : Flag<["-"], "d">,
+ HelpText<"Force tentative into real definitions for common symbols">,
+ Flags<[HelpHidden]>,
+ Group<grp_object>;
+
+def grp_resolve : OptionGroup<"resolve">, HelpText<"SYMBOL RESOLUTION">;
+
+def exported_symbols_list : Separate<["-"], "exported_symbols_list">,
+ MetaVarName<"<file>">,
+ HelpText<"Symbols specified in <file> remain global, while others become private externs">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def exported_symbol : Separate<["-"], "exported_symbol">,
+ MetaVarName<"<symbol>">,
+ HelpText<"<symbol> remains global, while others become private externs">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def unexported_symbols_list : Separate<["-"], "unexported_symbols_list">,
+ MetaVarName<"<file>">,
+ HelpText<"Global symbols specified in <file> become private externs">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def unexported_symbol : Separate<["-"], "unexported_symbol">,
+ MetaVarName<"<symbol>">,
+ HelpText<"Global <symbol> becomes private extern">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def reexported_symbols_list : Separate<["-"], "reexported_symbols_list">,
+ MetaVarName<"<file>">,
+ HelpText<"Symbols from dependent dylibs specified in <file> are reexported by this dylib">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def alias : MultiArg<["-"], "alias", 2>,
+ MetaVarName<"<symbol_name> <alternate_name>">,
+ HelpText<"Create a symbol alias with default global visibility">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def alias_list : Separate<["-"], "alias_list">,
+ MetaVarName<"<file>">,
+ HelpText<"Create symbol aliases specified in <file>">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def flat_namespace : Flag<["-"], "flat_namespace">,
+ HelpText<"Resolve symbols from all dylibs, both direct & transitive. Do not record source libraries: dyld must re-search at runtime and use the first definition found">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def u : Separate<["-"], "u">,
+ MetaVarName<"<symbol>">,
+ HelpText<"Require that <symbol> be defined for the link to succeed">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def U : Separate<["-"], "U">,
+ MetaVarName<"<symbol>">,
+ HelpText<"Allow <symbol> to have no definition">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def undefined : Separate<["-"], "undefined">,
+ MetaVarName<"<treatment>">,
+ HelpText<"Handle undefined symbols according to <treatment>: error, warning, suppress, or dynamic_lookup (default is error)">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def rpath : Separate<["-"], "rpath">,
+ MetaVarName<"<path>">,
+ HelpText<"Add <path> to dyld search list for dylibs with load path prefix `@rpath/'">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+def commons : Separate<["-"], "commons">,
+ MetaVarName<"<treatment>">,
+ HelpText<"Resolve tentative definitions in dylibs according to <treatment>: ignore_dylibs, use_dylibs, error (default is ignore_dylibs)">,
+ Flags<[HelpHidden]>,
+ Group<grp_resolve>;
+
+def grp_introspect : OptionGroup<"introspect">, HelpText<"INTROSPECTING THE LINKER">;
+
+def why_load : Flag<["-"], "why_load">,
+ HelpText<"Log the symbol that compels loading of each object file from a static library">,
+ Flags<[HelpHidden]>,
+ Group<grp_introspect>;
+def whyload : Flag<["-"], "whyload">,
+ Alias<why_load>,
+ HelpText<"Alias for -why_load">,
+ Flags<[HelpHidden]>,
+ Group<grp_introspect>;
+def why_live : Separate<["-"], "why_live">,
+ MetaVarName<"<symbol>">,
+ HelpText<"Log a chain of references to <symbol>, for use with -dead_strip">,
+ Flags<[HelpHidden]>,
+ Group<grp_introspect>;
+def print_statistics : Flag<["-"], "print_statistics">,
+ HelpText<"Log the linker's memory and CPU usage">,
+ Flags<[HelpHidden]>,
+ Group<grp_introspect>;
+def t : Flag<["-"], "t">,
+ HelpText<"Log every file the linker loads: object, archive, and dylib">,
+ Flags<[HelpHidden]>,
+ Group<grp_introspect>;
+def whatsloaded : Flag<["-"], "whatsloaded">,
+ HelpText<"Logs only the object files the linker loads">,
+ Flags<[HelpHidden]>,
+ Group<grp_introspect>;
+def order_file_statistics : Flag<["-"], "order_file_statistics">,
+ HelpText<"Logs information about -order_file">,
+ Flags<[HelpHidden]>,
+ Group<grp_introspect>;
+def map : Separate<["-"], "map">,
+ MetaVarName<"<path>">,
+ HelpText<"Writes all symbols and their addresses to <path>">,
+ Flags<[HelpHidden]>,
+ Group<grp_introspect>;
+
+def grp_symtab : OptionGroup<"symtab">, HelpText<"SYMBOL TABLE OPTIMIZATIONS">;
+
+def S : Flag<["-"], "S">,
+ HelpText<"Strip debug information (STABS or DWARF) from the output">,
+ Flags<[HelpHidden]>,
+ Group<grp_symtab>;
+def x : Flag<["-"], "x">,
+ HelpText<"Exclude non-global symbols from the output symbol table">,
+ Flags<[HelpHidden]>,
+ Group<grp_symtab>;
+def non_global_symbols_strip_list : Separate<["-"], "non_global_symbols_strip_list">,
+ MetaVarName<"<path>">,
+ HelpText<"Specify in <path> the non-global symbols that should be removed from the output symbol table">,
+ Flags<[HelpHidden]>,
+ Group<grp_symtab>;
+def non_global_symbols_no_strip_list : Separate<["-"], "non_global_symbols_no_strip_list">,
+ MetaVarName<"<path>">,
+ HelpText<"Specify in <path> the non-global symbols that should remain in the output symbol table">,
+ Flags<[HelpHidden]>,
+ Group<grp_symtab>;
+def oso_prefix : Separate<["-"], "oso_prefix">,
+ MetaVarName<"<path>">,
+ HelpText<"Remove the prefix <path> from OSO symbols in the debug map">,
+ Flags<[HelpHidden]>,
+ Group<grp_symtab>;
+
+def grp_bitcode : OptionGroup<"bitcode">, HelpText<"BITCODE BUILD FLOW">;
+
+def bitcode_bundle : Flag<["-"], "bitcode_bundle">,
+ HelpText<"Generate an embedded bitcode bundle in the __LLVM,__bundle section of the output">,
+ Flags<[HelpHidden]>,
+ Group<grp_bitcode>;
+def bitcode_hide_symbols : Flag<["-"], "bitcode_hide_symbols">,
+ HelpText<"With -bitcode_bundle, hide all non-exported symbols from output bitcode bundle.">,
+ Flags<[HelpHidden]>,
+ Group<grp_bitcode>;
+def bitcode_symbol_map : Separate<["-"], "bitcode_symbol_map">,
+ MetaVarName<"<path>">,
+ HelpText<"Write the bitcode symbol reverse mapping to file <path>, or if a directory, to <path>/UUID.bcsymbolmap">,
+ Flags<[HelpHidden]>,
+ Group<grp_bitcode>;
+
+def grp_rare : OptionGroup<"rare">, HelpText<"RARELY USED">;
+
+def v : Flag<["-"], "v">,
+ HelpText<"Print the linker version">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def version_details : Flag<["-"], "version_details">,
+ HelpText<"Print the linker version in JSON form">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_weak_imports : Flag<["-"], "no_weak_imports">,
+ HelpText<"Fail if any symbols are weak imports, allowed to be NULL at runtime">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_deduplicate : Flag<["-"], "no_deduplicate">,
+ HelpText<"Omit the deduplication pass">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def verbose_deduplicate : Flag<["-"], "verbose_deduplicate">,
+ HelpText<"Print function names eliminated by deduplication and the total size of code savings">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_inits : Flag<["-"], "no_inits">,
+ HelpText<"Fail if the output contains static initializers">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_warn_inits : Flag<["-"], "no_warn_inits">,
+ HelpText<"Suppress warnings for static initializers in the output">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def debug_variant : Flag<["-"], "debug_variant">,
+ HelpText<"Suppress warnings germane to binaries shipping to customers">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def unaligned_pointers : Separate<["-"], "unaligned_pointers">,
+ MetaVarName<"<treatment>">,
+ HelpText<"Handle unaligned pointers in __DATA segments according to <treatment>: warning, error, or suppress (default for arm64e is error, otherwise suppress)">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def dirty_data_list : Separate<["-"], "dirty_data_list">,
+ MetaVarName<"<path>">,
+ HelpText<"Specify data symbols in <path> destined for the __DATA_DIRTY segment">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def max_default_common_align : Separate<["-"], "max_default_common_align">,
+ MetaVarName<"<boundary>">,
+ HelpText<"Reduce maximum alignment for common symbols to a hex power-of-2 <boundary>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def move_to_rw_segment : MultiArg<["-"], "move_to_rw_segment", 2>,
+ MetaVarName<"<segment> <path>">,
+ HelpText<"Move data symbols listed in <path> to another <segment>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def move_to_ro_segment : MultiArg<["-"], "move_to_ro_segment", 2>,
+ MetaVarName<"<segment> <path>">,
+ HelpText<"Move code symbols listed in <path> to another <segment>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def rename_section : MultiArg<["-"], "rename_section", 4>,
+ MetaVarName<"<from_segment> <from_section> <to_segment> <to_section>">,
+ HelpText<"Rename <from_segment>/<from_section> as <to_segment>/<to_section>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def rename_segment : MultiArg<["-"], "rename_segment", 2>,
+ MetaVarName<"<from_segment> <to_segment>">,
+ HelpText<"Rename <from_segment> as <to_segment>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def trace_symbol_layout : Flag<["-"], "trace_symbol_layout">,
+ HelpText<"Show where and why symbols move, as specified by -move_to_ro_segment, -move_to_rw_segment, -rename_section, and -rename_segment">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def section_order : MultiArg<["-"], "section_order", 2>,
+ MetaVarName<"<segment> <sections>">,
+ HelpText<"With -preload, specify layout sequence of colon-separated <sections> in <segment>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def segment_order : Separate<["-"], "segment_order">,
+ MetaVarName<"<colon_separated_segment_list>">,
+ HelpText<"With -preload, specify layout sequence of colon-separated <segments>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def allow_heap_execute : Flag<["-"], "allow_heap_execute">,
+ HelpText<"On i386, allow any page to execute code">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def application_extension : Flag<["-"], "application_extension">,
+ HelpText<"Designate the linker output as safe for use in an application extension">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_application_extension : Flag<["-"], "no_application_extension">,
+ HelpText<"Designate the linker output as unsafe for use in an application extension">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def fatal_warnings : Flag<["-"], "fatal_warnings">,
+ HelpText<"Escalate warnings as errors">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_eh_labels : Flag<["-"], "no_eh_labels">,
+ HelpText<"In -r mode, suppress .eh lables in the __eh_frame section">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def warn_compact_unwind : Flag<["-"], "warn_compact_unwind">,
+ HelpText<"Warn for each FDE that cannot compact into the __unwind_info section and must remain in the __eh_frame section">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def warn_weak_exports : Flag<["-"], "warn_weak_exports">,
+ HelpText<"Warn if the linked image contains weak external symbols">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_weak_exports : Flag<["-"], "no_weak_exports">,
+ HelpText<"Fail if the linked image contains weak external symbols">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def objc_gc_compaction : Flag<["-"], "objc_gc_compaction">,
+ HelpText<"Mark the Objective-C image as compatible with compacting garbage collection">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def objc_gc : Flag<["-"], "objc_gc">,
+ HelpText<"Verify that all code was compiled with -fobjc-gc or -fobjc-gc-only">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def objc_gc_only : Flag<["-"], "objc_gc_only">,
+ HelpText<"Verify that all code was compiled with -fobjc-gc-only">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def dead_strip_dylibs : Flag<["-"], "dead_strip_dylibs">,
+ HelpText<"Remove dylibs that are unreachable by the entry point or exported symbols">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def allow_sub_type_mismatches : Flag<["-"], "allow_sub_type_mismatches">,
+ HelpText<"Permit mixing objects compiled for
diff erent ARM CPU subtypes">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_uuid : Flag<["-"], "no_uuid">,
+ HelpText<"Do not generate the LC_UUID load command">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def root_safe : Flag<["-"], "root_safe">,
+ HelpText<"Set the MH_ROOT_SAFE bit in the mach-o header">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def setuid_safe : Flag<["-"], "setuid_safe">,
+ HelpText<"Set the MH_SETUID_SAFE bit in the mach-o header">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def interposable : Flag<["-"], "interposable">,
+ HelpText<"Indirects access to all to exported symbols in a dylib">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def multi_module : Flag<["-"], "multi_module">,
+ Alias<interposable>,
+ HelpText<"Alias for -interposable">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def init : Separate<["-"], "init">,
+ MetaVarName<"<symbol>">,
+ HelpText<"Run <symbol> as the first initializer in a dylib">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def sub_library : Separate<["-"], "sub_library">,
+ MetaVarName<"<name>">,
+ HelpText<"Re-export the dylib as <name>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def sub_umbrella : Separate<["-"], "sub_umbrella">,
+ MetaVarName<"<name>">,
+ HelpText<"Re-export the framework as <name>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def allowable_client : Separate<["-"], "allowable_client">,
+ MetaVarName<"<name>">,
+ HelpText<"Specify <name> of a dylib or framework that is allowed to link to this dylib">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def client_name : Separate<["-"], "client_name">,
+ MetaVarName<"<name>">,
+ HelpText<"Specifies a <name> this client should match with the -allowable_client <name> in a dependent dylib">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def umbrella : Separate<["-"], "umbrella">,
+ MetaVarName<"<<name>>">,
+ HelpText<"Re-export this dylib through the umbrella framework <name>a">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def headerpad : Separate<["-"], "headerpad">,
+ MetaVarName<"<size>">,
+ HelpText<"Allocate hex <size> extra space for future expansion of the load commands via install_name_tool">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def headerpad_max_install_names : Flag<["-"], "headerpad_max_install_names">,
+ HelpText<"Allocate extra space so all load-command paths can expand to MAXPATHLEN via install_name_tool">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def bind_at_load : Flag<["-"], "bind_at_load">,
+ HelpText<"Tell dyld to bind all symbols at load time, rather than lazily">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def force_flat_namespace : Flag<["-"], "force_flat_namespace">,
+ HelpText<"Tell dyld to use a flat namespace on this executable and all its dependent dylibs & bundles">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def segalign : Separate<["-"], "segalign">,
+ MetaVarName<"<boundary>">,
+ HelpText<"Align all segments to hex power-of-2 <boundary>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def sectalign : MultiArg<["-"], "sectalign", 3>,
+ MetaVarName<"<segment> <section> <boundary>">,
+ HelpText<"Align <section> within <segment> to hex power-of-2 <boundary>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def stack_addr : Separate<["-"], "stack_addr">,
+ MetaVarName<"<address>">,
+ HelpText<"Initialize stack pointer to hex <address> rounded to a page boundary">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def segprot : MultiArg<["-"], "segprot", 3>,
+ MetaVarName<"<segment> <max> <init>">,
+ HelpText<"Specifies the <max> and <init> virtual memory protection of <segment> as r/w/x/-seg_addr_table path Specify hex base addresses and dylib install names on successive lines in <path>. This option is obsolete">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def segs_read_write_addr : Separate<["-"], "segs_read_write_addr">,
+ MetaVarName<"<address>">,
+ HelpText<"This option is obsolete">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def segs_read_only_addr : Separate<["-"], "segs_read_only_addr">,
+ MetaVarName<"<address>">,
+ HelpText<"This option is obsolete">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def segaddr : MultiArg<["-"], "segaddr", 2>,
+ MetaVarName<"<segment> <address>">,
+ HelpText<"Specify the starting hex <address> at a 4KiB page boundary for <segment>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def seg_page_size : MultiArg<["-"], "seg_page_size", 2>,
+ MetaVarName<"<segment> <size>">,
+ HelpText<"Specifies the page <size> for <segment>. Segment size will be a multiple of its page size">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def dylib_file : Separate<["-"], "dylib_file">,
+ MetaVarName<"<install_path:current_path>">,
+ HelpText<"Specify <current_path> as
diff erent from where a dylib normally resides at <install_path>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def prebind : Flag<["-"], "prebind">,
+ HelpText<"This option is obsolete">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def weak_reference_mismatches : Separate<["-"], "weak_reference_mismatches">,
+ MetaVarName<"<treatment>">,
+ HelpText<"Resolve symbol imports of conflicting weakness according to <treatment> as weak, non-weak, or error (default is non-weak)">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def read_only_relocs : Separate<["-"], "read_only_relocs">,
+ MetaVarName<"<treatment>">,
+ HelpText<"Handle relocations that modify read-only pages according to <treatment> of warning, error, or suppress (i.e., allow)">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def force_cpusubtype_ALL : Flag<["-"], "force_cpusubtype_ALL">,
+ HelpText<"Mark binary as runnable on any PowerPC, ignoring any PowerPC cpu requirements encoded in the object files">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_arch_warnings : Flag<["-"], "no_arch_warnings">,
+ HelpText<"Suppresses warnings about inputs whose architecture does not match the -arch option">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def arch_errors_fatal : Flag<["-"], "arch_errors_fatal">,
+ HelpText<"Escalate to errors any warnings about inputs whose architecture does not match the -arch option">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def e : Separate<["-"], "e">,
+ MetaVarName<"<symbol>">,
+ HelpText<"Make <symbol> the entry point of an executable (default is \"start\" from crt1.o)">,
+ Group<grp_rare>;
+def w : Flag<["-"], "w">,
+ HelpText<"Suppress all warnings">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def final_output : Separate<["-"], "final_output">,
+ MetaVarName<"<name>">,
+ HelpText<"Specify the dylib install name if -install_name is not used--used by compiler driver for multiple -arch arguments">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def arch_multiple : Flag<["-"], "arch_multiple">,
+ HelpText<"Augment error and warning messages with the architecture name">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def twolevel_namespace_hints : Flag<["-"], "twolevel_namespace_hints">,
+ HelpText<"This option is obsolete">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def dot : Separate<["-"], "dot">,
+ MetaVarName<"<path>">,
+ HelpText<"Write a graph of symbol dependencies to <path> as a .dot file viewable with GraphViz">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def keep_relocs : Flag<["-"], "keep_relocs">,
+ HelpText<"Retain section-based relocation records in the output, which are ignored at runtime by dyld">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def warn_stabs : Flag<["-"], "warn_stabs">,
+ HelpText<"Warn when bad stab symbols inside a BINCL/EINCL prevent optimization">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def warn_commons : Flag<["-"], "warn_commons">,
+ HelpText<"Warn when a tentative definition in an object file matches an external symbol in a dylib, which often means \"extern\" is missing from a variable declaration in a header file">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def read_only_stubs : Flag<["-"], "read_only_stubs">,
+ HelpText<"On i386, make the __IMPORT segment of a final linked image read-only">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def slow_stubs : Flag<["-"], "slow_stubs">,
+ HelpText<"This option is obsolete">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def interposable_list : Separate<["-"], "interposable_list">,
+ MetaVarName<"<path>">,
+ HelpText<"Access global symbols listed in <path> indirectly">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_function_starts : Flag<["-"], "no_function_starts">,
+ HelpText<"Do not creates a compressed table of function start addresses">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def no_objc_category_merging : Flag<["-"], "no_objc_category_merging">,
+ HelpText<"Do not merge Objective-C categories into their classes">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def object_path_lto : Separate<["-"], "object_path_lto">,
+ MetaVarName<"<path>">,
+ HelpText<"Retain any temporary mach-o file in <path> that would otherwise be deleted during LTO">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def lto_library : Separate<["-"], "lto_library">,
+ MetaVarName<"<path>">,
+ HelpText<"Override the default ../lib/libLTO.dylib as <path>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def cache_path_lto : Separate<["-"], "cache_path_lto">,
+ MetaVarName<"<path>">,
+ HelpText<"Use <path> as a directory for the incremental LTO cache">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def prune_interval_lto : Separate<["-"], "prune_interval_lto">,
+ MetaVarName<"<seconds>">,
+ HelpText<"Prune the incremental LTO cache after <seconds> (-1 disables pruning)">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def prune_after_lto : Separate<["-"], "prune_after_lto">,
+ MetaVarName<"<seconds>">,
+ HelpText<"Remove LTO cache entries after <seconds>">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def max_relative_cache_size_lto : Separate<["-"], "max_relative_cache_size_lto">,
+ MetaVarName<"<percent>">,
+ HelpText<"Limit the incremental LTO cache growth to <percent> of free disk, space">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def page_align_data_atoms : Flag<["-"], "page_align_data_atoms">,
+ HelpText<"Distribute global variables on separate pages so page used/dirty status can guide creation of an order file to cluster commonly used/dirty globals">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+def not_for_dyld_shared_cache : Flag<["-"], "not_for_dyld_shared_cache">,
+ HelpText<"Prevent system dylibs from being placed into the dylib shared cache">,
+ Flags<[HelpHidden]>,
+ Group<grp_rare>;
+
+def grp_deprecated : OptionGroup<"deprecated">, HelpText<"DEPRECATED">;
+
+def lazy_framework : Separate<["-"], "lazy_framework">,
+ MetaVarName<"<name>">,
+ HelpText<"This option is deprecated and is now an alias for -framework.">,
+ Flags<[HelpHidden]>,
+ Group<grp_deprecated>;
+def lazy_library : Separate<["-"], "lazy_library">,
+ MetaVarName<"<path>">,
+ HelpText<"This option is deprecated and is now an alias for regular linking">,
+ Flags<[HelpHidden]>,
+ Group<grp_deprecated>;
+def lazy_l : Joined<["-"], "lazy-l">,
+ MetaVarName<"<name>">,
+ HelpText<"This option is deprecated and is now an alias for -l<path>.">,
+ Flags<[HelpHidden]>,
+ Group<grp_deprecated>;
+def single_module : Flag<["-"], "single_module">,
+ HelpText<"Unnecessary option: this is already the default">,
+ Flags<[HelpHidden]>,
+ Group<grp_deprecated>;
+def no_dead_strip_inits_and_terms : Flag<["-"], "no_dead_strip_inits_and_terms">,
+ HelpText<"Unnecessary option: initialization and termination are roots of the dead strip graph, so never dead stripped">,
+ Flags<[HelpHidden]>,
+ Group<grp_deprecated>;
+def noall_load : Flag<["-"], "noall_load">,
+ HelpText<"Unnecessary option: this is already the default">,
+ Flags<[HelpHidden]>,
+ Group<grp_deprecated>;
+
+def grp_obsolete : OptionGroup<"obsolete">, HelpText<"OBSOLETE">;
+
+def y : Joined<["-"], "y">,
+ MetaVarName<"<symbol>">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def sectobjectsymbols : MultiArg<["-"], "sectobjectsymbols", 2>,
+ MetaVarName<"<segname> <sectname>">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def nofixprebinding : Flag<["-"], "nofixprebinding">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def noprebind_all_twolevel_modules : Flag<["-"], "noprebind_all_twolevel_modules">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def prebind_all_twolevel_modules : Flag<["-"], "prebind_all_twolevel_modules">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def prebind_allow_overlap : Flag<["-"], "prebind_allow_overlap">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def noprebind : Flag<["-"], "noprebind">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def sect_
diff _relocs : Separate<["-"], "sect_
diff _relocs">,
+ MetaVarName<"<treatment>">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def A : Separate<["-"], "A">,
+ MetaVarName<"<basefile>">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def b : Flag<["-"], "b">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def Sn : Flag<["-"], "Sn">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def Si : Flag<["-"], "Si">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def Sp : Flag<["-"], "Sp">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def X : Flag<["-"], "X">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def s : Flag<["-"], "s">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def m : Flag<["-"], "m">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def Y : Separate<["-"], "Y">,
+ MetaVarName<"<number>">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def nomultidefs : Flag<["-"], "nomultidefs">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def multiply_defined_unused : Separate<["-"], "multiply_defined_unused">,
+ MetaVarName<"<treatment>">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def multiply_defined : Separate<["-"], "multiply_defined">,
+ MetaVarName<"<treatment>">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def private_bundle : Flag<["-"], "private_bundle">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def seg_addr_table_filename : Separate<["-"], "seg_addr_table_filename">,
+ MetaVarName<"<path>">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def sectorder_detail : Flag<["-"], "sectorder_detail">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def no_compact_linkedit : Flag<["-"], "no_compact_linkedit">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def dependent_dr_info : Flag<["-"], "dependent_dr_info">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def no_dependent_dr_info : Flag<["-"], "no_dependent_dr_info">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def seglinkedit : Flag<["-"], "seglinkedit">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def noseglinkedit : Flag<["-"], "noseglinkedit">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def fvmlib : Flag<["-"], "fvmlib">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+def run_init_lazily : Flag<["-"], "run_init_lazily">,
+ HelpText<"This option is obsolete in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_obsolete>;
+
+def grp_undocumented : OptionGroup<"undocumented">, HelpText<"UNDOCUMENTED">;
+
+def add_ast_path : Flag<["-"], "add_ast_path">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def add_linker_option : Flag<["-"], "add_linker_option">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def add_source_version : Flag<["-"], "add_source_version">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_source_version : Flag<["-"], "no_source_version">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def add_split_seg_info : Flag<["-"], "add_split_seg_info">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def allow_dead_duplicates : Flag<["-"], "allow_dead_duplicates">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def allow_simulator_linking_to_macosx_dylibs : Flag<["-"], "allow_simulator_linking_to_macosx_dylibs">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def bitcode_process_mode : Flag<["-"], "bitcode_process_mode">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def bitcode_verify : Flag<["-"], "bitcode_verify">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def classic_linker : Flag<["-"], "classic_linker">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def data_const : Flag<["-"], "data_const">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_data_const : Flag<["-"], "no_data_const">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def data_in_code_info : Flag<["-"], "data_in_code_info">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_data_in_code_info : Flag<["-"], "no_data_in_code_info">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def debug_snapshot : Flag<["-"], "debug_snapshot">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def demangle : Flag<["-"], "demangle">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def dependency_info : Flag<["-"], "dependency_info">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def dyld_env : Flag<["-"], "dyld_env">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def encryptable : Flag<["-"], "encryptable">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def executable_path : Flag<["-"], "executable_path">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def fixup_chains : Flag<["-"], "fixup_chains">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def fixup_chains_section : Flag<["-"], "fixup_chains_section">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def flto_codegen_only : Flag<["-"], "flto-codegen-only">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def force_load_swift_libs : Flag<["-"], "force_load_swift_libs">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def force_symbol_not_weak : Flag<["-"], "force_symbol_not_weak">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def force_symbols_coalesce_list : Flag<["-"], "force_symbols_coalesce_list">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def force_symbols_not_weak_list : Flag<["-"], "force_symbols_not_weak_list">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def force_symbols_weak_list : Flag<["-"], "force_symbols_weak_list">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def force_symbol_weak : Flag<["-"], "force_symbol_weak">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def function_starts : Flag<["-"], "function_starts">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def i : Flag<["-"], "i">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def ignore_auto_link : Flag<["-"], "ignore_auto_link">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def ignore_optimization_hints : Flag<["-"], "ignore_optimization_hints">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def init_offsets : Flag<["-"], "init_offsets">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def keep_dwarf_unwind : Flag<["-"], "keep_dwarf_unwind">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_keep_dwarf_unwind : Flag<["-"], "no_keep_dwarf_unwind">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def kext : Flag<["-"], "kext">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def kext_objects_dir : Flag<["-"], "kext_objects_dir">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_kext_objects : Flag<["-"], "no_kext_objects">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def kexts_use_stubs : Flag<["-"], "kexts_use_stubs">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def maccatalyst_version_min : Flag<["-"], "maccatalyst_version_min">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def iosmac_version_min : Flag<["-"], "iosmac_version_min">,
+ Alias<maccatalyst_version_min>,
+ HelpText<"Alias for -maccatalyst_version_min">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def uikitformac_version_min : Flag<["-"], "uikitformac_version_min">,
+ Alias<maccatalyst_version_min>,
+ HelpText<"Alias for -maccatalyst_version_min">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def mcpu : Flag<["-"], "mcpu">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def mllvm : Flag<["-"], "mllvm">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_compact_unwind : Flag<["-"], "no_compact_unwind">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_dtrace_dof : Flag<["-"], "no_dtrace_dof">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_encryption : Flag<["-"], "no_encryption">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def no_new_main : Flag<["-"], "no_new_main">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def objc_abi_version : Flag<["-"], "objc_abi_version">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def pause : Flag<["-"], "pause">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def random_uuid : Flag<["-"], "random_uuid">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def save_temps : Flag<["-"], "save-temps">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def sdk_version : Flag<["-"], "sdk_version">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def simulator_support : Flag<["-"], "simulator_support">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def snapshot_dir : Flag<["-"], "snapshot_dir">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def source_version : Flag<["-"], "source_version">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def text_exec : Flag<["-"], "text_exec">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def threaded_starts_section : Flag<["-"], "threaded_starts_section">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def twolevel_namespace : Flag<["-"], "twolevel_namespace">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def verbose_optimization_hints : Flag<["-"], "verbose_optimization_hints">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+def version_load_command : Flag<["-"], "version_load_command">,
+ HelpText<"This option is undocumented in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_undocumented>;
+
+def grp_ignored : OptionGroup<"ignored">, HelpText<"IGNORED">;
+
+def M : Flag<["-"], "M">,
+ HelpText<"This option is ignored in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_ignored>;
+def new_linker : Flag<["-"], "new_linker">,
+ HelpText<"This option is ignored in ld64">,
+ Flags<[HelpHidden]>,
+ Group<grp_ignored>;
diff --git a/lld/test/MachO/platform-version.test b/lld/test/MachO/platform-version.test
index ba10d4622835..4bd69ea76a27 100644
--- a/lld/test/MachO/platform-version.test
+++ b/lld/test/MachO/platform-version.test
@@ -1,16 +1,17 @@
# RUN: not lld -flavor darwinnew -arch x86_64 -platform_version 2>&1 \
-# RUN: | FileCheck --check-prefix=FAIL %s
+# RUN: | FileCheck --check-prefix=MISSING %s
# RUN: not lld -flavor darwinnew -arch x86_64 -platform_version macos 2>&1 \
-# RUN: | FileCheck --check-prefix=FAIL %s
+# RUN: | FileCheck --check-prefix=MISSING %s
# RUN: not lld -flavor darwinnew -arch x86_64 -platform_version macos 10.15 2>&1 \
-# RUN: | FileCheck --check-prefix=FAIL %s
+# RUN: | FileCheck --check-prefix=MISSING %s
# RUN: not lld -flavor darwinnew -arch x86_64 -platform_version macos -lfoo 10.15 2>&1 \
-# RUN: | FileCheck --check-prefix=FAIL %s
+# RUN: | FileCheck --check-prefix=GOOD %s
# RUN: not lld -flavor darwinnew -arch x86_64 -platform_version macos 10.15 10.15.4 2>&1 \
# RUN: | FileCheck --check-prefix=GOOD %s
# RUN: not lld -flavor darwinnew -arch x86_64 -platform_version macos 10.15 10.15.4 foobar 2>&1 \
# RUN: | FileCheck --check-prefix=FAIL_FILE %s
+MISSING: -platform_version: missing argument
FAIL: usage: -platform_version platform min_version sdk_version
GOOD: undefined symbol: _main
FAIL_FILE: cannot open foobar
diff --git a/llvm/include/llvm/Option/Option.h b/llvm/include/llvm/Option/Option.h
index e598798d9a6b..73ee8e0073b8 100644
--- a/llvm/include/llvm/Option/Option.h
+++ b/llvm/include/llvm/Option/Option.h
@@ -135,6 +135,18 @@ class Option {
return Ret;
}
+ /// Get the help text for this option.
+ StringRef getHelpText() const {
+ assert(Info && "Must have a valid info!");
+ return Info->HelpText;
+ }
+
+ /// Get the meta-variable list for this option.
+ StringRef getMetaVar() const {
+ assert(Info && "Must have a valid info!");
+ return Info->MetaVar;
+ }
+
unsigned getNumArgs() const { return Info->Param; }
bool hasNoOptAsInput() const { return Info->Flags & RenderAsInput;}
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