[lld] r333596 - Simplify `ld.lld --help` message.

David Zarzycki via llvm-commits llvm-commits at lists.llvm.org
Thu May 31 12:30:38 PDT 2018


Hi Rui,

FYI – This broke building LLVM with `-DBUILD_SHARED_LIBS=TRUE`. Here is the build output:

FAILED: lib/libLLVMMCJIT.so.7svn 
: && /usr/local/bin/clang++ -fPIC -Werror=switch -stdlib=libc++ -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections -O2  -stdlib=libc++ -Wl,-z,defs -Wl,-z,nodelete -fuse-ld=lld -Wl,--color-diagnostics   -Wl,-O3 -Wl,--gc-sections -shared -Wl,-soname,libLLVMMCJIT.so.7 -o lib/libLLVMMCJIT.so.7svn lib/ExecutionEngine/MCJIT/CMakeFiles/LLVMMCJIT.dir/MCJIT.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib" lib/libLLVMExecutionEngine.so.7svn lib/libLLVMObject.so.7svn lib/libLLVMRuntimeDyld.so.7svn lib/libLLVMSupport.so.7svn lib/libLLVMTarget.so.7svn lib/libLLVMCore.so.7svn -Wl,-rpath-link,/tmp/temp_lc/t/lib && :
/usr/local/bin/ld.lld: error: cannot open /tmp/temp_lc/t/lib: Is a directory
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)
[95+1389] Building CXX object lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o
FAILED: lib/libLLVMOrcJIT.so.7svn 
: && /usr/local/bin/clang++ -fPIC -Werror=switch -stdlib=libc++ -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections -O2  -stdlib=libc++ -Wl,-z,defs -Wl,-z,nodelete -fuse-ld=lld -Wl,--color-diagnostics   -Wl,-O3 -Wl,--gc-sections -shared -Wl,-soname,libLLVMOrcJIT.so.7 -o lib/libLLVMOrcJIT.so.7svn lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/Core.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/ExecutionUtils.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/IndirectionUtils.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/IRCompileLayer.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/IRTransformLayer.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/Legacy.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/Layer.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/NullResolver.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/ObjectTransformLayer.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/OrcABISupport.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/OrcCBindings.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/OrcError.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/OrcMCJITReplacement.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/RPCUtils.cpp.o lib/ExecutionEngine/Orc/CMakeFiles/LLVMOrcJIT.dir/RTDyldObjectLinkingLayer.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib" lib/libLLVMExecutionEngine.so.7svn lib/libLLVMObject.so.7svn lib/libLLVMRuntimeDyld.so.7svn lib/libLLVMSupport.so.7svn lib/libLLVMTransformUtils.so.7svn lib/libLLVMCore.so.7svn -Wl,-rpath-link,/tmp/temp_lc/t/lib && :
/usr/local/bin/ld.lld: error: cannot open /tmp/temp_lc/t/lib: Is a directory
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)
[95+1372] Building CXX object lib/Passes/CMakeFiles/LLVMPasses.dir/PassBuilder.cpp.o
FAILED: lib/libLLVMInterpreter.so.7svn 
: && /usr/local/bin/clang++ -fPIC -Werror=switch -stdlib=libc++ -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections -O2  -stdlib=libc++ -Wl,-z,defs -Wl,-z,nodelete -fuse-ld=lld -Wl,--color-diagnostics   -Wl,-O3 -Wl,--gc-sections -shared -Wl,-soname,libLLVMInterpreter.so.7 -o lib/libLLVMInterpreter.so.7svn lib/ExecutionEngine/Interpreter/CMakeFiles/LLVMInterpreter.dir/Execution.cpp.o lib/ExecutionEngine/Interpreter/CMakeFiles/LLVMInterpreter.dir/ExternalFunctions.cpp.o lib/ExecutionEngine/Interpreter/CMakeFiles/LLVMInterpreter.dir/Interpreter.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib" lib/libLLVMCodeGen.so.7svn lib/libLLVMExecutionEngine.so.7svn lib/libLLVMSupport.so.7svn lib/libLLVMCore.so.7svn lib/libLLVMRuntimeDyld.so.7svn -Wl,-rpath-link,/tmp/temp_lc/t/lib && :
/usr/local/bin/ld.lld: error: cannot open /tmp/temp_lc/t/lib: Is a directory
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)
[28+28] Linking CXX executable bin/llvm-ar
FAILED: bin/llvm-rtdyld 
: && /usr/local/bin/clang++  -Werror=switch -stdlib=libc++ -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wcovered-switch-default -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wstring-conversion -fdiagnostics-color -ffunction-sections -fdata-sections -O2  -ljemalloc -stdlib=libc++ -fuse-ld=lld -Wl,--color-diagnostics -Wl,-allow-shlib-undefined     -Wl,-O3 -Wl,--gc-sections tools/llvm-rtdyld/CMakeFiles/llvm-rtdyld.dir/llvm-rtdyld.cpp.o  -o bin/llvm-rtdyld  -Wl,-rpath,"\$ORIGIN/../lib" lib/libLLVMX86CodeGen.so.7svn lib/libLLVMX86AsmParser.so.7svn lib/libLLVMX86AsmPrinter.so.7svn lib/libLLVMX86Desc.so.7svn lib/libLLVMX86Disassembler.so.7svn lib/libLLVMX86Info.so.7svn lib/libLLVMX86Utils.so.7svn lib/libLLVMAArch64CodeGen.so.7svn lib/libLLVMAArch64AsmParser.so.7svn lib/libLLVMAArch64AsmPrinter.so.7svn lib/libLLVMAArch64Desc.so.7svn lib/libLLVMAArch64Disassembler.so.7svn lib/libLLVMAArch64Info.so.7svn lib/libLLVMAArch64Utils.so.7svn lib/libLLVMPowerPCCodeGen.so.7svn lib/libLLVMPowerPCAsmParser.so.7svn lib/libLLVMPowerPCAsmPrinter.so.7svn lib/libLLVMPowerPCDesc.so.7svn lib/libLLVMPowerPCDisassembler.so.7svn lib/libLLVMPowerPCInfo.so.7svn lib/libLLVMDebugInfoDWARF.so.7svn lib/libLLVMExecutionEngine.so.7svn lib/libLLVMMC.so.7svn lib/libLLVMObject.so.7svn lib/libLLVMRuntimeDyld.so.7svn lib/libLLVMSupport.so.7svn -lpthread -Wl,-rpath-link,/tmp/temp_lc/t/lib && :
/usr/local/bin/ld.lld: error: cannot open /tmp/temp_lc/t/lib: Is a directory
clang-7: error: linker command failed with exit code 1 (use -v to see invocation)
[1+12] Linking CXX shared module lib/BugpointPasses.so
ninja: build stopped: cannot make progress due to previous errors.


> On May 30, 2018, at 5:25 PM, Rui Ueyama via llvm-commits <llvm-commits at lists.llvm.org> wrote:
> 
> Author: ruiu
> Date: Wed May 30 14:25:53 2018
> New Revision: 333596
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=333596&view=rev
> Log:
> Simplify `ld.lld --help` message.
> 
> Previously, we printed out two lines of help messages for `--foo bar`
> and `--foo=bar` like this:
> 
>  --soname=<value>        Set DT_SONAME
>  --soname <value>        Set DT_SONAME
>  --sort-section=<value>  Specifies sections sorting rule when linkerscript is used
>  --sort-section <value>  Specifies sections sorting rule when linkerscript is used
> 
> This change eliminates duplicate lines that doesn't contain `=` for such
> options like this.
> 
>  --soname=<value>        Set DT_SONAME
>  --sort-section=<value>  Specifies sections sorting rule when linkerscript is used
> 
> Differential Revision: https://reviews.llvm.org/D47558
> 
> Modified:
>    lld/trunk/ELF/Options.td
> 
> Modified: lld/trunk/ELF/Options.td
> URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Options.td?rev=333596&r1=333595&r2=333596&view=diff
> ==============================================================================
> --- lld/trunk/ELF/Options.td (original)
> +++ lld/trunk/ELF/Options.td Wed May 30 14:25:53 2018
> @@ -5,9 +5,10 @@ include "llvm/Option/OptParser.td"
> class F<string name>: Flag<["--", "-"], name>;
> class J<string name>: Joined<["--", "-"], name>;
> 
> -multiclass Eq<string name> {
> +multiclass Eq<string name, string help> {
>   def NAME: Separate<["--", "-"], name>;
> -  def NAME # _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>;
> +  def NAME # _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>,
> +    HelpText<help>;
> }
> 
> multiclass B<string name, string help1, string help2> {
> @@ -15,8 +16,7 @@ multiclass B<string name, string help1,
>   def no_ # NAME: Flag<["--", "-"], "no-" # name>, HelpText<help2>;
> }
> 
> -defm auxiliary: Eq<"auxiliary">,
> -  HelpText<"Set DT_AUXILIARY field to the specified name">;
> +defm auxiliary: Eq<"auxiliary", "Set DT_AUXILIARY field to the specified name">;
> 
> def Bsymbolic: F<"Bsymbolic">, HelpText<"Bind defined symbols locally">;
> 
> @@ -35,24 +35,21 @@ defm check_sections : B<"check-sections"
>     "Check section addresses for overlaps",
>     "Do not check section addresses for overlaps">;
> 
> -defm compress_debug_sections : Eq<"compress-debug-sections">,
> -  HelpText<"Compress DWARF debug sections">;
> +defm compress_debug_sections:
> +  Eq<"compress-debug-sections", "Compress DWARF debug sections">;
> 
> -defm defsym: Eq<"defsym">, HelpText<"Define a symbol alias">;
> +defm defsym: Eq<"defsym", "Define a symbol alias">;
> 
> -defm library_path: Eq<"library-path">,
> -  HelpText<"Add a directory to the library search path">, MetaVarName<"<dir>">;
> +defm library_path:
> +  Eq<"library-path", "Add a directory to the library search path">, MetaVarName<"<dir>">;
> 
> def O: JoinedOrSeparate<["-"], "O">, HelpText<"Optimize output file size">;
> 
> -defm Tbss: Eq<"Tbss">,
> -  HelpText<"Same as --section-start with .bss as the sectionname">;
> +defm Tbss: Eq<"Tbss", "Same as --section-start with .bss as the sectionname">;
> 
> -defm Tdata: Eq<"Tdata">,
> -  HelpText<"Same as --section-start with .data as the sectionname">;
> +defm Tdata: Eq<"Tdata", "Same as --section-start with .data as the sectionname">;
> 
> -defm Ttext: Eq<"Ttext">,
> -  HelpText<"Same as --section-start with .text as the sectionname">;
> +defm Ttext: Eq<"Ttext", "Same as --section-start with .text as the sectionname">;
> 
> defm allow_multiple_definition: B<"allow-multiple-definition",
>     "Allow multiple definitions",
> @@ -66,11 +63,11 @@ defm as_needed: B<"as-needed",
>     "Only set DT_NEEDED for shared libraries if used",
>     "Always set DT_NEEDED for shared libraries">;
> 
> -defm call_graph_ordering_file: Eq<"call-graph-ordering-file">,
> -  HelpText<"Layout sections to optimize the given callgraph">;
> +defm call_graph_ordering_file:
> +  Eq<"call-graph-ordering-file", "Layout sections to optimize the given callgraph">;
> 
> // -chroot doesn't have a help text because it is an internal option.
> -defm chroot: Eq<"chroot">;
> +def chroot: Separate<["--", "-"], "chroot">;
> 
> def color_diagnostics: F<"color-diagnostics">,
>   HelpText<"Use colors in diagnostics">;
> @@ -101,11 +98,9 @@ def discard_locals: F<"discard-locals">,
> def discard_none: F<"discard-none">,
>   HelpText<"Keep all symbols in the symbol table">;
> 
> -defm dynamic_linker: Eq<"dynamic-linker">,
> -  HelpText<"Which dynamic linker to use">;
> +defm dynamic_linker: Eq<"dynamic-linker", "Which dynamic linker to use">;
> 
> -defm dynamic_list: Eq<"dynamic-list">,
> -  HelpText<"Read a list of dynamic symbols">;
> +defm dynamic_list: Eq<"dynamic-list", "Read a list of dynamic symbols">;
> 
> defm eh_frame_hdr: B<"eh-frame-hdr",
>     "Request creation of .eh_frame_hdr section and PT_GNU_EH_FRAME segment header",
> @@ -122,40 +117,36 @@ def end_group: F<"end-group">,
> def end_lib: F<"end-lib">,
>   HelpText<"End a grouping of objects that should be treated as if they were together in an archive">;
> 
> -defm entry: Eq<"entry">, HelpText<"Name of entry point symbol">,
> +defm entry: Eq<"entry", "Name of entry point symbol">,
>   MetaVarName<"<entry>">;
> 
> -defm error_limit: Eq<"error-limit">,
> -  HelpText<"Maximum number of errors to emit before stopping (0 = no limit)">;
> +defm error_limit:
> +  Eq<"error-limit", "Maximum number of errors to emit before stopping (0 = no limit)">;
> 
> def error_unresolved_symbols: F<"error-unresolved-symbols">,
>   HelpText<"Report unresolved symbols as errors">;
> 
> -defm exclude_libs: Eq<"exclude-libs">,
> -  HelpText<"Exclude static libraries from automatic export">;
> +defm exclude_libs: Eq<"exclude-libs", "Exclude static libraries from automatic export">;
> 
> defm export_dynamic: B<"export-dynamic",
>     "Put symbols in the dynamic symbol table",
>     "Do not put symbols in the dynamic symbol table">;
> 
> -defm export_dynamic_symbol: Eq<"export-dynamic-symbol">,
> -  HelpText<"Put a symbol in the dynamic symbol table">;
> +defm export_dynamic_symbol:
> +  Eq<"export-dynamic-symbol", "Put a symbol in the dynamic symbol table">;
> 
> defm fatal_warnings: B<"fatal-warnings",
>     "Treat warnings as errors",
>     "Do not treat warnings as errors">;
> 
> -defm filter: Eq<"filter">,
> -  HelpText<"Set DT_FILTER field to the specified name">;
> +defm filter: Eq<"filter", "Set DT_FILTER field to the specified name">;
> 
> -defm fini: Eq<"fini">,
> -  HelpText<"Specify a finalizer function">, MetaVarName<"<symbol>">;
> +defm fini: Eq<"fini", "Specify a finalizer function">, MetaVarName<"<symbol>">;
> 
> def fix_cortex_a53_843419: F<"fix-cortex-a53-843419">,
>   HelpText<"Apply fixes for AArch64 Cortex-A53 erratum 843419">;
> 
> -defm format: Eq<"format">,
> -  HelpText<"Change the input format of the inputs following this option">,
> +defm format: Eq<"format", "Change the input format of the inputs following this option">,
>   MetaVarName<"<input-format>">;
> 
> defm gc_sections: B<"gc-sections",
> @@ -170,8 +161,7 @@ defm gnu_unique: B<"gnu-unique",
>   "Enable STB_GNU_UNIQUE symbol binding",
>   "Disable STB_GNU_UNIQUE symbol binding">;
> 
> -defm hash_style: Eq<"hash-style">,
> -  HelpText<"Specify hash style (sysv, gnu or both)">;
> +defm hash_style: Eq<"hash-style", "Specify hash style (sysv, gnu or both)">;
> 
> def help: F<"help">, HelpText<"Print option help">;
> 
> @@ -185,21 +175,21 @@ def ignore_function_address_equality: F<
> def ignore_data_address_equality: F<"ignore-data-address-equality">,
>   HelpText<"lld can break the address equality of data">;
> 
> -defm image_base : Eq<"image-base">, HelpText<"Set the base address">;
> +defm image_base: Eq<"image-base", "Set the base address">;
> 
> -defm init: Eq<"init">, HelpText<"Specify an initializer function">,
> +defm init: Eq<"init", "Specify an initializer function">,
>   MetaVarName<"<symbol>">;
> 
> -defm just_symbols: Eq<"just-symbols">, HelpText<"Just link symbols">;
> +defm just_symbols: Eq<"just-symbols", "Just link symbols">;
> 
> -defm keep_unique: Eq<"keep-unique">, HelpText<"Do not fold this symbol during ICF">;
> +defm keep_unique: Eq<"keep-unique", "Do not fold this symbol during ICF">;
> 
> -defm library: Eq<"library">, HelpText<"Root name of library to use">,
> +defm library: Eq<"library", "Root name of library to use">,
>   MetaVarName<"<libName>">;
> 
> def m: JoinedOrSeparate<["-"], "m">, HelpText<"Set target emulation">;
> 
> -defm Map: Eq<"Map">, HelpText<"Print a link map to the specified file">;
> +defm Map: Eq<"Map", "Print a link map to the specified file">;
> 
> defm merge_exidx_entries: B<"merge-exidx-entries",
>     "Enable merging .ARM.exidx entries",
> @@ -235,11 +225,12 @@ def oformat: Separate<["--"], "oformat">
> def omagic: Flag<["--"], "omagic">, MetaVarName<"<magic>">,
>   HelpText<"Set the text and data sections to be readable and writable">;
> 
> -defm orphan_handling: Eq<"orphan-handling">,
> -  HelpText<"Control how orphan sections are handled when linker script used">;
> +defm orphan_handling:
> +  Eq<"orphan-handling", "Control how orphan sections are handled when linker script used">;
> 
> -defm pack_dyn_relocs: Eq<"pack-dyn-relocs">, MetaVarName<"<format>">,
> -  HelpText<"Pack dynamic relocations in the given format (none or android)">;
> +defm pack_dyn_relocs:
> +  Eq<"pack-dyn-relocs", "Pack dynamic relocations in the given format (none or android)">,
> +  MetaVarName<"<format>">;
> 
> defm pie: B<"pie",
>     "Create a position independent executable",
> @@ -256,28 +247,27 @@ defm print_icf_sections: B<"print-icf-se
> def print_map: F<"print-map">,
>   HelpText<"Print a link map to the standard output">;
> 
> -defm reproduce: Eq<"reproduce">,
> -  HelpText<"Dump linker invocation and input files for debugging">;
> +defm reproduce: Eq<"reproduce", "Dump linker invocation and input files for debugging">;
> 
> -defm rpath: Eq<"rpath">, HelpText<"Add a DT_RUNPATH to the output">;
> +defm rpath: Eq<"rpath", "Add a DT_RUNPATH to the output">;
> 
> def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
> 
> -defm retain_symbols_file: Eq<"retain-symbols-file">,
> -  HelpText<"Retain only the symbols listed in the file">,
> +defm retain_symbols_file:
> +  Eq<"retain-symbols-file", "Retain only the symbols listed in the file">,
>   MetaVarName<"<file>">;
> 
> -defm script: Eq<"script">, HelpText<"Read linker script">;
> +defm script: Eq<"script", "Read linker script">;
> 
> -defm section_start: Eq<"section-start">, MetaVarName<"<address>">,
> -  HelpText<"Set address of section">;
> +defm section_start: Eq<"section-start", "Set address of section">,
> +  MetaVarName<"<address>">;
> 
> def shared: F<"shared">, HelpText<"Build a shared object">;
> 
> -defm soname: Eq<"soname">, HelpText<"Set DT_SONAME">;
> +defm soname: Eq<"soname", "Set DT_SONAME">;
> 
> -defm sort_section: Eq<"sort-section">,
> -  HelpText<"Specifies sections sorting rule when linkerscript is used">;
> +defm sort_section:
> +  Eq<"sort-section", "Specifies sections sorting rule when linkerscript is used">;
> 
> def start_group: F<"start-group">,
>   HelpText<"Ignored for compatibility with GNU unless you pass --warn-backrefs">;
> @@ -289,17 +279,17 @@ def strip_all: F<"strip-all">, HelpText<
> 
> def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
> 
> -defm symbol_ordering_file: Eq<"symbol-ordering-file">,
> -  HelpText<"Layout sections to place symbols in the order specified by symbol ordering file">;
> +defm symbol_ordering_file:
> +  Eq<"symbol-ordering-file", "Layout sections to place symbols in the order specified by symbol ordering file">;
> 
> -defm sysroot: Eq<"sysroot">, HelpText<"Set the system root">;
> +defm sysroot: Eq<"sysroot", "Set the system root">;
> 
> def target1_rel: F<"target1-rel">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_REL32">;
> 
> def target1_abs: F<"target1-abs">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_ABS32">;
> 
> -defm target2: Eq<"target2">,
> -  HelpText<"Interpret R_ARM_TARGET2 as <type>, where <type> is one of rel, abs, or got-rel">,
> +defm target2:
> +  Eq<"target2", "Interpret R_ARM_TARGET2 as <type>, where <type> is one of rel, abs, or got-rel">,
>   MetaVarName<"<type>">;
> 
> defm threads: B<"threads",
> @@ -308,20 +298,19 @@ defm threads: B<"threads",
> 
> def trace: F<"trace">, HelpText<"Print the names of the input files">;
> 
> -defm trace_symbol : Eq<"trace-symbol">, HelpText<"Trace references to symbols">;
> +defm trace_symbol: Eq<"trace-symbol", "Trace references to symbols">;
> 
> -defm undefined: Eq<"undefined">,
> -  HelpText<"Force undefined symbol during linking">;
> +defm undefined: Eq<"undefined", "Force undefined symbol during linking">;
> 
> -defm unresolved_symbols: Eq<"unresolved-symbols">,
> -  HelpText<"Determine how to handle unresolved symbols">;
> +defm unresolved_symbols:
> +  Eq<"unresolved-symbols", "Determine how to handle unresolved symbols">;
> 
> defm undefined_version: B<"undefined-version",
>   "Allow unused version in version script",
>   "Report version scripts that refer undefined symbols">;
> 
> -defm rsp_quoting: Eq<"rsp-quoting">,
> -  HelpText<"Quoting style for response files. Values supported: windows|posix">;
> +defm rsp_quoting:
> +  Eq<"rsp-quoting", "Quoting style for response files. Values supported: windows|posix">;
> 
> def v: Flag<["-"], "v">, HelpText<"Display the version number">;
> 
> @@ -329,7 +318,7 @@ def verbose: F<"verbose">, HelpText<"Ver
> 
> def version: F<"version">, HelpText<"Display the version number and exit">;
> 
> -defm version_script: Eq<"version-script">, HelpText<"Read a version script">;
> +defm version_script: Eq<"version-script", "Read a version script">;
> 
> defm warn_backrefs: B<"warn-backrefs",
>     "Warn about backward symbol references to fetch archive members",
> @@ -350,7 +339,7 @@ defm whole_archive: B<"whole-archive",
>     "Force load of all members in a static library",
>     "Do not force load of all members in a static library">;
> 
> -defm wrap: Eq<"wrap">, HelpText<"Use wrapper functions for symbol">,
> +defm wrap: Eq<"wrap", "Use wrapper functions for symbol">,
>   MetaVarName<"<symbol>">;
> 
> def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
> @@ -413,18 +402,16 @@ def lto_partitions: J<"lto-partitions=">
> def lto_sample_profile: J<"lto-sample-profile=">,
>   HelpText<"Sample profile file path">;
> def disable_verify: F<"disable-verify">;
> -defm mllvm: Eq<"mllvm">;
> +defm mllvm: Eq<"mllvm", "Additional arguments to forward to LLVM's option processing">;
> def opt_remarks_filename: Separate<["--"], "opt-remarks-filename">,
>   HelpText<"YAML output file for optimization remarks">;
> def opt_remarks_with_hotness: Flag<["--"], "opt-remarks-with-hotness">,
>   HelpText<"Include hotness information in the optimization remarks file">;
> -defm plugin_opt: Eq<"plugin-opt">,
> -  HelpText<"specifies LTO options for compatibility with GNU linkers">;
> +defm plugin_opt: Eq<"plugin-opt", "specifies LTO options for compatibility with GNU linkers">;
> def save_temps: F<"save-temps">;
> def thinlto_cache_dir: J<"thinlto-cache-dir=">,
>   HelpText<"Path to ThinLTO cached object file directory">;
> -defm thinlto_cache_policy: Eq<"thinlto-cache-policy">,
> -  HelpText<"Pruning policy for the ThinLTO cache">;
> +defm thinlto_cache_policy: Eq<"thinlto-cache-policy", "Pruning policy for the ThinLTO cache">;
> def thinlto_jobs: J<"thinlto-jobs=">, HelpText<"Number of ThinLTO jobs">;
> 
> def plugin_opt_O: J<"plugin-opt=O">, Alias<lto_O>;
> @@ -450,7 +437,7 @@ def plugin_opt_thinlto_prefix_replace_eq
> // just ignore the option on lld side as it's easier. In fact, the linker could
> // be called 'ld' and understanding which linker is used would require parsing of
> // --version output.
> -defm plugin: Eq<"plugin">;
> +def plugin: J<"plugin">;
> 
> def plugin_opt_fresolution_eq: J<"plugin-opt=-fresolution=">;
> def plugin_opt_pass_through_eq: J<"plugin-opt=-pass-through=">;
> @@ -469,7 +456,8 @@ def no_ctors_in_init_array: F<"no-ctors-
> def no_keep_memory: F<"no-keep-memory">;
> def no_mmap_output_file: F<"no-mmap-output-file">;
> def no_warn_mismatch: F<"no-warn-mismatch">;
> -defm rpath_link: Eq<"rpath-link">;
> +def rpath_link: J<"rpath-link">;
> +def rpath_link_eq: J<"rpath-link=">;
> def sort_common: F<"sort-common">;
> def stats: F<"stats">;
> def warn_execstack: F<"warn-execstack">;
> 
> 
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