Index: head/usr.bin/clang/lld/ld.lld.1 =================================================================== --- head/usr.bin/clang/lld/ld.lld.1 (revision 328809) +++ head/usr.bin/clang/lld/ld.lld.1 (revision 328810) @@ -1,364 +1,364 @@ .\"- .\" Copyright (c) 2018 Kirill Ponomarev .\" Copyright (c) 2018 The FreeBSD Foundation .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" $FreeBSD$ .\" .Dd January 10, 2018 .Dt LD.LLD 1 .Os .Sh NAME .Nm ld.lld .Nd ELF linker from the LLVM project .Sh SYNOPSIS .Nm ld.lld .Op Ar options .Ar objfile ... .Sh DESCRIPTION -A linker takes one or more object, archive and library files, and combines +A linker takes one or more object, archive, and library files, and combines them into an output file (an executable, a shared library, or another object file). It relocates code and data from the input files and resolves symbol references between them. .Pp .Nm is a drop-in replacement for the GNU BFD and gold linkers. It accepts most of the same command line arguments and linker scripts as GNU linkers. .Pp -The following options are available: +These options are available: .Bl -tag -width indent .It Fl -allow-multiple-definition Allow multiple definitions. .It Fl -as-needed Only set .Dv DT_NEEDED for shared libraries if used. .It Fl -auxiliary Ar value Set the .Dv DT_AUXILIARY field to the specified name. .It Fl -Bdynamic Link against shared libraries. .It Fl -Bstatic Do not link against shared libraries. .It Fl -Bsymbolic-functions Bind defined function symbols locally. .It Fl -Bsymbolic Bind defined symbols locally. .It Fl -build-id= Ns Ar value Generate a build ID note. .It Fl -build-id Generate a build ID note. .It Fl -color-diagnostics= Ns Ar value Use colors in diagnostics. .It Fl -color-diagnostics Use colors in diagnostics. .It Fl -compress-debug-sections= Ns Ar value Compress DWARF debug sections. .It Fl -define-common Assign space to common symbols. .It Fl -defsym= Ns Ar value Define a symbol alias. .It Fl -demangle Demangle symbol names. .It Fl -disable-new-dtags Disable new dynamic tags. .It Fl -discard-all Delete all local symbols. .It Fl -discard-locals Delete temporary local symbols. .It Fl -discard-none Keep all symbols in the symbol table. .It Fl -dynamic-linker Ar value Specify the dynamic linker to be used for a dynamically linked executable. This is recorded in an ELF segment of type .Dv PT_INTERP . .It Fl -dynamic-list Ar value Read a list of dynamic symbols. .It Fl -eh-frame-hdr Request creation of .Li .eh_frame_hdr section and .Dv PT_GNU_EH_FRAME segment header. .It Fl -emit-relocs Generate relocations in the output. .It Fl -enable-new-dtags Enable new dynamic tags. .It Fl -end-lib End a grouping of objects that should be treated as if they were together in an archive. .It Fl -entry Ar entry Name of entry point symbol. .It Fl -error-limit Ar value Maximum number of errors to emit before stopping. A value of zero indicates that there is no limit. .It Fl -error-unresolved-symbols Report unresolved symbols as errors. .It Fl -exclude-libs Ar value Exclude static libraries from automatic export. .It Fl -export-dynamic-symbol Ar value Put a symbol in the dynamic symbol table. .It Fl -export-dynamic Put symbols in the dynamic symbol table. .It Fl -fatal-warnings Treat warnings as errors. .It Fl -filter= Ns Ar value Set the .Dv DT_FILTER field to the specified value. .It Fl -fini Ar symbol Specify a finalizer function. .It Fl -format= Ns Ar input-format Change the input format of the inputs following this option. .It Fl -full-shutdown Perform a full shutdown instead of calling .Fn _exit . .It Fl -gc-sections Enable garbage collection of unused sections. .It Fl -gdb-index Generate .Li .gdb_index section. .It Fl -hash-style Ar value Specify hash style (sysv, gnu or both). .It Fl -help Print a usage message. .It Fl -icf=all Enable identical code folding. .It Fl -icf=none Disable identical code folding. .It Fl -image-base= Ns Ar value Set the base address to .Ar value . .It Fl -init Ar symbol Specify an initializer function. .It Fl -lto-aa-pipeline= Ns Ar value AA pipeline to run during LTO. Used in conjunction with .Fl -lto-newpm-passes . .It Fl -lto-newpm-passes= Ns Ar value Passes to run during LTO. .It Fl -lto-O Ar opt-level Optimization level for LTO. .It Fl -lto-partitions= Ns Ar value Number of LTO codegen partitions. .It Fl L Ar dir Add a directory to the library search path. .It Fl l Ar libName Root name of library to use. .It Fl -Map Ar value Print a link map to the specified file. .It Fl m Ar value Set target emulation. .It Fl -no-as-needed Always set .Dv DT_NEEDED for shared libraries. .It Fl -no-color-diagnostics Do not use colors in diagnostics. .It Fl -no-define-common Do not assign space to common symbols. .It Fl -no-demangle Do not demangle symbol names. .It Fl -no-dynamic-linker Inhibit output of an .Li .interp section. .It Fl -no-gc-sections Disable garbage collection of unused sections. .It Fl -no-gnu-unique Disable STB_GNU_UNIQUE symbol binding. .It Fl -no-rosegment Do not put read-only non-executable sections in their own segment. .It Fl -no-threads Do not run the linker multi-threaded. .It Fl -no-undefined-version Report version scripts that refer undefined symbols. .It Fl -no-undefined Report unresolved symbols even if the linker is creating a shared library. .It Fl -no-whole-archive Restores the default behavior of loading archive members. .It Fl -noinhibit-exec Retain the executable output file whenever it is still usable. .It Fl -nopie Do not create a position independent executable. .It Fl -nostdlib Only search directories specified on the command line. .It Fl -oformat Ar format Specify the binary format for the output object file. .It Fl -omagic Set the text and data sections to be readable and writable. .It Fl -opt-remarks-filename Ar value YAML output file for optimization remarks. .It Fl -opt-remarks-with-hotness Include hotness information in the optimization remarks file. .It Fl O Ar value Optimize output file size. .It Fl o Ar path -Write the output executable, library or object to +Write the output executable, library, or object to .Ar path . If not specified, .Dv a.out is used as a default. .It Fl -pie Create a position independent executable. .It Fl -print-gc-sections List removed unused sections. .It Fl -print-map Print a link map to the standard output. .It Fl -relocatable Create relocatable object file. .It Fl -reproduce Ar value Dump linker invocation and input files for debugging. .It Fl -retain-symbols-file= Ns Ar file Retain only the symbols listed in the file. .It Fl -rpath Ar value Add a .Dv DT_RUNPATH to the output. .It Fl -rsp-quoting= Ns Ar value Quoting style for response files. The supported values are .Ar windows and .Ar posix . .It Fl -script Ar value Read linker script from the path .Ar value . .It Fl -section-start Ar address Set address of section. .It Fl -shared Build a shared object. .It Fl -soname= Ns Ar value Set .Dv DT_SONAME to .Ar value . .It Fl -sort-section Ar value Specifies sections sorting rule when linkerscript is used. .It Fl -start-lib Start a grouping of objects that should be treated as if they were together in an archive. .It Fl -strip-all Strip all symbols. .It Fl -strip-debug Strip debugging information. .It Fl -symbol-ordering-file Ar value Lay out sections in the order specified by the symbol file. .It Fl -sysroot= Ns Ar value Set the system root. .It Fl -target1-abs Interpret .Dv R_ARM_TARGET1 as .Dv R_ARM_ABS32 . .It Fl -target1-rel Interpret .Dv R_ARM_TARGET1 as .Dv R_ARM_REL32 . .It Fl -target2=type Interpret .Dv R_ARM_TARGET2 as .Ar type , where .Ar type is one of .Li rel , .Li abs , or .Li got-rel . .It Fl -Tbss Ar value Same as .Fl -section-start with .Li .bss as the sectionname. .It Fl -Tdata Ar value Same as .Fl -section-start with .Li .data as the sectionname. .It Fl -thinlto-cache-dir= Ns Ar value Path to ThinLTO cached object file directory. .It Fl -thinlto-cache-policy Ar value Pruning policy for the ThinLTO cache. .It Fl -thinlto-jobs= Ns Ar value Number of ThinLTO jobs. .It Fl -threads Run the linker multi-threaded. .It Fl -trace-symbol Ar value Trace references to symbols. .It Fl -trace Print the names of the input files. .It Fl -Ttext Ar value Same as .Fl -section-start with .Li .text as the sectionname. .It Fl -undefined Ar value Force undefined symbol during linking. .It Fl -unresolved-symbols= Ns Ar value Determine how to handle unresolved symbols. .It Fl -verbose Verbose mode. .It Fl -version-script Ar value Read a version script. .It Fl V , Fl -version Display the version number and exit. .It Fl v -Display the version number, and proceed with linking if object files are +Display the version number and proceed with linking if object files are specified. .It Fl -warn-common Warn about duplicate common symbols. .It Fl -warn-unresolved-symbols Report unresolved symbols as warnings. .It Fl -whole-archive Force load of all members in a static library. .It Fl -wrap Ar symbol Use wrapper functions for symbol. .It Fl z Ar option Linker option extensions. .Bl -tag -width indent .It Cm notext Allow relocations against read-only segments. Sets the .Dv DT_TEXTREL flag in the .Dv DYNAMIC section. .It Cm text Do not allow relocations against read-only segments. This is the default. .El .El .Sh IMPLEMENTATION NOTES The targets supported by .Nm are: elf32-i386 elf32-iamcu elf32-littlearm elf32-ntradbigmips elf32-ntradlittlemips elf32-powerpc elf32-tradbigmips elf32-tradlittlemips elf32-x86-64 elf64-amdgpu elf64-littleaarch64 elf64-powerpc elf64-tradbigmips elf64-tradlittlemips elf64-x86-64