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llvm-project/lld/ELF/Options.td

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[ELF2] Add a new ELF linker based on the new PE/COFF linker. Differential Revision: http://reviews.llvm.org/D11188 llvm-svn: 243161
2015-07-25 05:03:07 +08:00
include "llvm/Option/OptParser.td"
Allow both one and two dashes for all multi-letter options. GNU ld's manual page says that all options whose names are multiple letters, except those who start with "o", can start either with one or two dashes. llvm-svn: 273218
2016-06-21 07:10:40 +08:00
// For options whose names are multiple letters, either one dash or
// two can precede the option name except those that start with 'o'.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
class F<string name>: Flag<["--", "-"], name>;
class J<string name>: Joined<["--", "-"], name>;
class S<string name>: Separate<["--", "-"], name>;
class JS<string name>: JoinedOrSeparate<["--", "-"], name>;
[ELF2] Add support for -Bsymbolic. llvm-svn: 250225
2015-10-14 05:02:34 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def Bsymbolic: F<"Bsymbolic">, HelpText<"Bind defined symbols locally">;
ELF: Implement --build-id. This patch implements --build-id. After the linker creates an output file in the memory buffer, it computes the FNV1 hash of the resulting file and set the hash to the .note section as a build-id. GNU ld and gold have the same feature, but their default choice of the hash function is different. Their default is SHA1. We made a deliberate choice to not use a secure hash function for the sake of performance. Computing a secure hash is slow -- for example, MD5 throughput is usually 400 MB/s or so. SHA1 is slower than that. As a result, if you pass --build-id to gold, then the linker becomes about 10% slower than that without the option. We observed a similar degradation in an experimental implementation of build-id for LLD. On the other hand, we observed only 1-2% performance degradation with the FNV hash. Since build-id is not for digital certificate or anything, we think that a very small probability of collision is acceptable. We considered using other signals such as using input file timestamps as inputs to a secure hash function. But such signals would have an issue with build reproducibility (if you build a binary from the same source tree using the same toolchain, the build id should become the same.) GNU linkers accepts --build-id=<style> option where style is one of "MD5", "SHA1", or an arbitrary hex string. That option is out of scope of this patch. http://reviews.llvm.org/D18091 llvm-svn: 263292
2016-03-12 04:51:53 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def Bsymbolic_functions: F<"Bsymbolic-functions">,
HelpText<"Bind defined function symbols locally">;
ELF: Implement --build-id=md5. Previously, we supported only one hash function, FNV-1, so BuildIdSection directly handled hash computation. In this patch, I made BuildIdSection an abstract class and defined two subclasses, BuildIdFnv1 and BuildIdMd5. llvm-svn: 265737
2016-04-08 06:49:21 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def Bdynamic: F<"Bdynamic">, HelpText<"Link against shared libraries">;
def Bstatic: F<"Bstatic">, HelpText<"Do not link against shared libraries">;
def build_id: F<"build-id">, HelpText<"Generate build ID note">;
def build_id_eq: J<"build-id=">, HelpText<"Generate build ID note">;
def L: JS<"L">, MetaVarName<"<dir>">,
Make -L description a bit more precise. llvm-svn: 270966
2016-05-27 12:48:26 +08:00
HelpText<"Add a directory to the library search path">;
Start adding support for creating shared libraries. They are not fully functional yet, but this implements enough support for lld itself to read them. With that, delete the .so binary we were using for tests and start eating our own dog food. llvm-svn: 247487
2015-09-12 06:42:45 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def O: J<"O">, HelpText<"Optimize output file size">;
def allow_multiple_definition: F<"allow-multiple-definition">,
HelpText<"Allow multiple definitions">;
def as_needed: F<"as-needed">,
HelpText<"Only set DT_NEEDED for shared libraries if used">;
Parse and store the value of the -O option. llvm-svn: 251136
2015-10-24 03:02:19 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def disable_new_dtags: F<"disable-new-dtags">,
HelpText<"Disable new dynamic tags">;
Implement --export-dynamic. llvm-svn: 248347
2015-09-23 07:38:23 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def discard_all: F<"discard-all">, HelpText<"Delete all local symbols">;
def discard_locals: F<"discard-locals">,
HelpText<"Delete temporary local symbols">;
def discard_none: F<"discard-none">,
HelpText<"Keep all symbols in the symbol table">;
def dynamic_linker: S<"dynamic-linker">,
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
HelpText<"Which dynamic linker to use">;
Implement --noinhibit-exec. Patch by George Rimar! llvm-svn: 248605
2015-09-26 03:24:57 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def dynamic_list: S<"dynamic-list">,
ELF: Implement --dynamic-list This patch implements the --dynamic-list option, which adds a list of global symbol that either should not be bounded by default definition when creating shared libraries, or add in dynamic symbol table in the case of creating executables. The patch modifies the ScriptParserBase class to use a list of Token instead of StringRef, which contains information if the token is a quoted or unquoted strings. It is used to use a faster search for exact match symbol name. The input file follow a similar format of linker script with some simplifications (it does not have scope or node names). It leads to a simplified parser define in DynamicList.{cpp,h}. Different from ld/gold neither glob pattern nor mangled names (extern 'C++') are currently supported. llvm-svn: 266227
2016-04-14 02:51:11 +08:00
HelpText<"Read a list of dynamic symbols">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def eh_frame_hdr: F<"eh-frame-hdr">,
HelpText<"Request creation of .eh_frame_hdr section and PT_GNU_EH_FRAME segment header">;
ELF: Implement --start-lib and --end-lib start-lib and end-lib are options to link object files in the same semantics as archive files. If an object is in start-lib and end-lib, the object is linked only when the file is needed to resolve undefined symbols. That means, if an object is in start-lib and end-lib, it behaves as if it were in an archive file. In this patch, I introduced a new notion, LazyObjectFile. That is analogous to Archive file type, but that works for a single object file instead of for an archive file. http://reviews.llvm.org/D18814 llvm-svn: 265710
2016-04-08 03:24:51 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def enable_new_dtags: F<"enable-new-dtags">,
HelpText<"Enable new dynamic tags">;
def end_lib: F<"end-lib">,
HelpText<"End a grouping of objects that should be treated as if they were together in an archive">;
def entry: S<"entry">, MetaVarName<"<entry>">,
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
HelpText<"Name of entry point symbol">;
[ELF2] Add support for -discard-none. Differential Revision: http://reviews.llvm.org/D13083 llvm-svn: 248499
2015-09-24 23:08:23 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def export_dynamic: F<"export-dynamic">,
HelpText<"Put symbols in the dynamic symbol table">;
Add support for -L and -l command line switches. Patch by Igor Kudrin! llvm-svn: 248708
2015-09-28 20:52:21 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def export_dynamic_symbol: S<"export-dynamic-symbol">,
ELF: Implement --export-dynamic-symbol. llvm-svn: 267184
2016-04-23 02:44:06 +08:00
HelpText<"Put a symbol in the dynamic symbol table">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def fini: S<"fini">, MetaVarName<"<symbol>">,
[ELF2] Add DT_INIT and DT_FINI dynamic table entries The entries are added if there are "_init" or "_fini" entries in the symbol table respectively. According to the behavior of ld, entries are inserted even for undefined symbols. Symbol names can be overridden by using -init and -fini command line switches. If used, these switches neither add new symbol table entries nor require those symbols to be resolved. Differential Revision: http://reviews.llvm.org/D13385 llvm-svn: 249297
2015-10-05 18:29:46 +08:00
HelpText<"Specify a finalizer function">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def hash_style: S<"hash-style">,
[ELF2] Add support for GNU Hash section This patch implements --hash-style command line switch. * By default, or with "sysv" or "both" parameters, the linker generates a standard ELF hash section. * With "gnu" or "both", it produces a GNU-style hash section. That section requires the symbols in the dynamic symbol table section, which are referenced in the GNU hash section, to be placed after not hashed ones and to be sorted to correspond the order of hash buckets in the GNU Hash section. The division function, as well as estimations for the section's parameters, are just the first rough attempt and the subjects for further adjustments. Differential Revision: http://reviews.llvm.org/D13815 llvm-svn: 251000
2015-10-22 16:21:35 +08:00
HelpText<"Specify hash style (sysv, gnu or both)">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def help: F<"help">, HelpText<"Print option help">;
def icf: F<"icf=all">, HelpText<"Enable identical code folding">;
ELF2: Implement --gc-sections. Section garbage collection is a feature to remove unused sections from outputs. Unused sections are sections that cannot be reachable from known GC-root symbols or sections. Naturally the feature is implemented as a mark-sweep garbage collector. In this patch, I added Live bit to InputSectionBase. If and only if Live bit is on, the section will be written to the output. Starting from GC-root symbols or sections, a new function, markLive(), visits all reachable sections and sets their Live bits. Writer then ignores sections whose Live bit is off, so that such sections are excluded from the output. This change has small negative impact on performance if you use the feature because making sections means more work. The time to link Clang changes from 0.356s to 0.386s, or +8%. It reduces Clang size from 57,764,984 bytes to 55,296,600 bytes. That is 4.3% reduction. http://reviews.llvm.org/D13950 llvm-svn: 251043
2015-10-23 02:49:53 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def gc_sections: F<"gc-sections">,
HelpText<"Enable garbage collection of unused sections">;
def init: S<"init">, MetaVarName<"<symbol>">,
[ELF2] Add DT_INIT and DT_FINI dynamic table entries The entries are added if there are "_init" or "_fini" entries in the symbol table respectively. According to the behavior of ld, entries are inserted even for undefined symbols. Symbol names can be overridden by using -init and -fini command line switches. If used, these switches neither add new symbol table entries nor require those symbols to be resolved. Differential Revision: http://reviews.llvm.org/D13385 llvm-svn: 249297
2015-10-05 18:29:46 +08:00
HelpText<"Specify an initializer function">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def l: JS<"l">, MetaVarName<"<libName>">,
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
HelpText<"Root name of library to use">;
Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def lto_O: J<"lto-O">, MetaVarName<"<opt-level>">,
ELF: Add flag for controlling LTO optimization level. Differential Revision: http://reviews.llvm.org/D18667 llvm-svn: 265053
2016-04-01 05:00:27 +08:00
HelpText<"Optimization level for LTO">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def m: JS<"m">, HelpText<"Set target emulation">;
def no_as_needed: F<"no-as-needed">,
HelpText<"Always DT_NEEDED for shared libraries">;
def no_demangle: F<"no-demangle">,
HelpText<"Do not demangle symbol names">;
def no_gnu_unique: F<"no-gnu-unique">,
HelpText<"Disable STB_GNU_UNIQUE symbol binding">;
def no_whole_archive: F<"no-whole-archive">,
HelpText<"Restores the default behavior of loading archive members">;
def noinhibit_exec: F<"noinhibit-exec">,
HelpText<"Retain the executable output file whenever it is still usable">;
[ELF2] Handle -m option Parse and apply emulation given with -m option. Check input files to match ELF type and machine architecture provided with -m. Differential Revision: http://reviews.llvm.org/D13055 llvm-svn: 249529
2015-10-07 17:13:03 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def no_undefined: F<"no-undefined">,
HelpText<"Report unresolved symbols even if the linker is creating a shared library">;
[ELF2] Implement --no-undefined flag. llvm-svn: 249064
2015-10-02 04:14:45 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
HelpText<"Path to file to write output">;
Add support for -L and -l command line switches. Patch by Igor Kudrin! llvm-svn: 248708
2015-09-28 20:52:21 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def pie: F<"pie">, HelpText<"Create a position independent executable">;
[ELF] - Implemented --print-gc-sections command line argument. List all sections removed by garbage collection. This option is only effective if garbage collection has been enabled via the `--gc-sections' option. Differential revision: http://reviews.llvm.org/D15327 llvm-svn: 255235
2015-12-10 17:12:18 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def print_gc_sections: F<"print-gc-sections">,
HelpText<"List removed unused sections">;
def reproduce: S<"reproduce">,
[ELF] Introduce --reproduce flag. --reproduce dumps the object files in a directory chosen (preserving the file system layout) and the linker invocation so that people can create an archive and upload for debugging. Differential Revision: http://reviews.llvm.org/D19494 llvm-svn: 267497
2016-04-26 08:22:24 +08:00
HelpText<"Dump linker invocation and input files for debugging">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def rpath: S<"rpath">, HelpText<"Add a DT_RUNPATH to the output">;
def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
def script: S<"script">, HelpText<"Read linker script">;
Add support for -L and -l command line switches. Patch by Igor Kudrin! llvm-svn: 248708
2015-09-28 20:52:21 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def shared: F<"shared">, HelpText<"Build a shared object">;
ELF2: Print an error message for --relocatable. llvm-svn: 252923
2015-11-13 02:54:15 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def soname: J<"soname=">, HelpText<"Set DT_SONAME">;
[ELF2] Implement -T/--script. This one tests more carefully SEARCH_DIR() as an added bonus. Differential Revision: http://reviews.llvm.org/D13626 llvm-svn: 249969
2015-10-11 11:53:36 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def start_lib: F<"start-lib">,
HelpText<"Start a grouping of objects that should be treated as if they were together in an archive">;
[ELF2] Add --sysroot command line switch Reviewers: rafael, ruiu Subscribers: llvm-commits Projects: #lld Differential Revision: http://reviews.llvm.org/D13209 llvm-svn: 248715
2015-09-28 23:01:59 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def strip_all: F<"strip-all">, HelpText<"Strip all symbols">;
ELF2: Add -soname option. llvm-svn: 249058
2015-10-02 03:36:04 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
ELF: Add --strip-debug option. If --strip-debug option is given, then all sections whose names start with ".debug" are removed from output. llvm-svn: 265722
2016-04-08 05:04:51 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def sysroot: J<"sysroot=">, HelpText<"Set the system root">;
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def threads: F<"threads">, HelpText<"Enable use of threads">;
[ELF, PR27091] - Implemented -t/--trace option -t/--trace Print the names of the input files as ld processes them. This fixes https://llvm.org/bugs/show_bug.cgi?id=27091. Differential revision: http://reviews.llvm.org/D18517 llvm-svn: 264708
2016-03-29 16:45:40 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def trace: F<"trace">, HelpText<"Print the names of the input files">;
Implement --trace-symbol=symbol option. Patch by Shridhar Joshi. This option provides names of all the link time modules which define and reference symbols requested by user. This helps to speed up application development by detecting references causing undefined symbols. It also helps in detecting symbols being resolved to wrong (unintended) definitions in case of applications containing multiple definitions for same symbols with different types, bindings. Implements PR28226. llvm-svn: 273536
2016-06-23 15:00:17 +08:00
def trace_symbol : J<"trace-symbol=">, HelpText<"Trace references to symbols">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def undefined: J<"undefined=">,
[ELF2] Add --undefined option Add symbol specified with -u as undefined which may cause additional object files from archives to be linked into the resulting binary. Differential Revision: http://reviews.llvm.org/D13345 llvm-svn: 249295
2015-10-05 17:43:57 +08:00
HelpText<"Force undefined symbol during linking">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def verbose: F<"verbose">, HelpText<"Verbose mode">;
def version: F<"version">, HelpText<"Display the version number">;
ELF: Add --version option. llvm-svn: 262167
2016-02-28 11:18:07 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def version_script: S<"version-script">,
ELF: Implement basic support for --version-script. This patch only implements support for version scripts of the form: { [ global: symbol1; symbol2; [...]; symbolN; ] local: *; }; No wildcards are supported, other than for the local entry. Symbol versioning is also not supported. It works by introducing a new Symbol flag which tracks whether a symbol appears in the global section of a version script. This patch also simplifies the logic in SymbolBody::isPreemptible(), and teaches it to handle the case where symbols with default visibility in DSOs do not appear in the dynamic symbol table because of a version script. Fixes PR27482. Differential Revision: http://reviews.llvm.org/D19430 llvm-svn: 267208
2016-04-23 04:21:26 +08:00
HelpText<"Read a version script">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def warn_common: F<"warn-common">,
HelpText<"Warn about duplicate common symbols">;
def whole_archive: F<"whole-archive">,
HelpText<"Force load of all members in a static library">;
[ELF2] Add --[no-]whole-archive command line switches Summary: If --whole-archive is used, all symbols from the following archives are added to the output. --no-whole-archive restores default behavior. These switches can be used multiple times. NB. We have to keep an ArchiveFile instance within SymbolTable even if --whole-archive mode is active since it can be a thin archive which contains just names of external files. In that case actual memory buffers for the archive members will be stored within the File member of ArchiveFile class. Reviewers: rafael, ruiu Subscribers: grimar, llvm-commits Projects: #lld Differential Revision: http://reviews.llvm.org/D13286 llvm-svn: 249045
2015-10-02 02:02:21 +08:00
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def wrap: S<"wrap">, MetaVarName<"<symbol>">,
ELF: Implement --wrap. In this patch, all symbols are resolved normally and then wrap options are applied. Renaming is implemented by mutating `Body` pointers of Symbols. (As a result, Symtab.find(SymbolName)->getName() may return a string that's different from SymbolName, but that is by design. I designed the symbol and the symbol table to allow this kind of operations.) http://reviews.llvm.org/D15896 llvm-svn: 257075
2016-01-08 01:20:07 +08:00
HelpText<"Use wrapper functions for symbol">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def z: JS<"z">, MetaVarName<"<option>">,
[ELF2] -z now option implemented When generating an executable or shared library, mark it to tell the dynamic linker to resolve all symbols when the program is started, or when the shared library is linked to using dlopen, instead of deferring function call resolution to the point when the function is first called. Differential Revision: http://reviews.llvm.org/D13468 llvm-svn: 249551
2015-10-07 23:00:21 +08:00
HelpText<"Linker option extensions">;
ELF2: Tidy up Options.td. Fix indentation and sort options alphabetically. llvm-svn: 248969
2015-10-01 08:33:02 +08:00
// Aliases
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def alias_Bdynamic_call_shared: F<"call_shared">, Alias<Bdynamic>;
def alias_Bdynamic_dy: F<"dy">, Alias<Bdynamic>;
def alias_Bstatic_dn: F<"dn">, Alias<Bstatic>;
def alias_Bstatic_non_shared: F<"non_shared">, Alias<Bstatic>;
def alias_Bstatic_static: F<"static">, Alias<Bstatic>;
def alias_L__library_path: J<"library-path=">, Alias<L>;
def alias_discard_all_x: F<"x">, Alias<discard_all>;
def alias_discard_locals_X: F<"X">, Alias<discard_locals>;
def alias_dynamic_list: J<"dynamic-list=">, Alias<dynamic_list>;
def alias_entry_e: JS<"e">, Alias<entry>;
def alias_export_dynamic_E: F<"E">, Alias<export_dynamic>;
def alias_export_dynamic_symbol: J<"export-dynamic-symbol=">,
Alias<export_dynamic_symbol>;
def alias_fini_fini: J<"fini=">, Alias<fini>;
def alias_hash_style_hash_style: J<"hash-style=">, Alias<hash_style>;
def alias_init_init: J<"init=">, Alias<init>;
def alias_l__library: J<"library=">, Alias<l>;
def alias_o_output: Joined<["--"], "output=">, Alias<o>;
def alias_pie_pic_executable: F<"pic-executable">, Alias<pie>;
def alias_relocatable_r: F<"r">, Alias<relocatable>;
def alias_rpath_R: J<"R">, Alias<rpath>;
def alias_rpath_rpath: J<"rpath=">, Alias<rpath>;
def alias_script_T: JS<"T">, Alias<script>;
def alias_shared_Bshareable: F<"Bshareable">, Alias<shared>;
def alias_soname_h: JS<"h">, Alias<soname>;
def alias_soname_soname: S<"soname">, Alias<soname>;
def alias_strip_all: F<"s">, Alias<strip_all>;
def alias_strip_debug_S: F<"S">, Alias<strip_debug>;
def alias_trace: F<"t">, Alias<trace>;
Implement --trace-symbol=symbol option. Patch by Shridhar Joshi. This option provides names of all the link time modules which define and reference symbols requested by user. This helps to speed up application development by detecting references causing undefined symbols. It also helps in detecting symbols being resolved to wrong (unintended) definitions in case of applications containing multiple definitions for same symbols with different types, bindings. Implements PR28226. llvm-svn: 273536
2016-06-23 15:00:17 +08:00
def alias_trace_symbol_y : JS<"y">, Alias<trace_symbol>;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def alias_undefined_u: JoinedOrSeparate<["-"], "u">, Alias<undefined>;
def alias_wrap_wrap: J<"wrap=">, Alias<wrap>;
ELF2: Ignore some command line argument that clang passes to the linker. llvm-svn: 248967
2015-10-01 08:24:54 +08:00
ELF2: Make comment less opinionated. llvm-svn: 253058
2015-11-14 02:56:07 +08:00
// Our symbol resolution algorithm handles symbols in archive files differently
ELF2: Add comments and reorganize option list a bit. llvm-svn: 252978
2015-11-13 08:26:12 +08:00
// than traditional linkers, so we don't need --start-group and --end-group.
ELF2: Make comment less opinionated. llvm-svn: 253058
2015-11-14 02:56:07 +08:00
// These options are recongized for compatibility but ignored.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def end_group: F<"end-group">;
def end_group_paren: F<")">;
def start_group: F<"start-group">;
def start_group_paren: F<"(">;
ELF2: Add comments and reorganize option list a bit. llvm-svn: 252978
2015-11-13 08:26:12 +08:00
[LTO] Ignore -plugin/-plugin-opt options. This is required to get 'clang -flto' to work transparently with lld. Please refer to the short comment in the code for a more detailed explanation. llvm-svn: 263862
2016-03-19 08:40:09 +08:00
// Ignore LTO plugin-related options.
// clang -flto passes -plugin and -plugin-opt to the linker. This is required
// for ld.gold and ld.bfd to get LTO working. But it's not for lld which doesn't
// rely on a plugin. Instead of detecting which linker is used on clang side we
// 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.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def plugin: S<"plugin">;
def plugin_eq: J<"plugin=">;
def plugin_opt: S<"plugin-opt">;
def plugin_opt_eq: J<"plugin-opt=">;
[LTO] Ignore -plugin/-plugin-opt options. This is required to get 'clang -flto' to work transparently with lld. Please refer to the short comment in the code for a more detailed explanation. llvm-svn: 263862
2016-03-19 08:40:09 +08:00
ELF2: Add comments and reorganize option list a bit. llvm-svn: 252978
2015-11-13 08:26:12 +08:00
// Options listed below are silently ignored for now for compatibility.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def allow_shlib_undefined: F<"allow-shlib-undefined">;
def define_common: F<"define-common">;
def detect_odr_violations: F<"detect-odr-violations">;
def fatal_warnings: F<"fatal-warnings">;
def no_add_needed: F<"no-add-needed">;
def no_allow_shlib_undefined: F<"no-allow-shlib-undefined">;
def no_copy_dt_needed_entries: F<"no-copy-dt-needed-entries">,
Alias<no_add_needed>;
def no_dynamic_linker: F<"no-dynamic-linker">;
def no_fatal_warnings: F<"no-fatal-warnings">;
def no_mmap_output_file: F<"no-mmap-output-file">;
def no_undefined_version: F<"no-undefined-version">;
def no_warn_common: F<"no-warn-common">;
def no_warn_mismatch: F<"no-warn-mismatch">;
def rpath_link: S<"rpath-link">;
def rpath_link_eq: J<"rpath-link=">;
Ignore --sort-common. Because we always sort common symbols, we can ignore the option. llvm-svn: 273842
2016-06-27 10:43:27 +08:00
def sort_common: F<"sort-common">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def warn_execstack: F<"warn-execstack">;
def warn_shared_textrel: F<"warn-shared-textrel">;
def G: S<"G">;
Add --version-script= alias for --version-script llvm-svn: 255249
2015-12-10 22:08:45 +08:00
// Aliases for ignored options
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def alias_define_common_d: F<"d">, Alias<define_common>;
def alias_define_common_dc: F<"dc">, Alias<define_common>;
def alias_define_common_dp: F<"dp">, Alias<define_common>;
def alias_version_script_version_script: J<"version-script=">,
Alias<version_script>;
[lto] Add beginning of -save-temps option. Summary: This is useful for debugging issues with LTO. The option follows the analogous option in ld64 and the gold plugin (per Rafael's suggestion). For starters, this only dumps the combined bitcode file. In a future patch I will add dumping for the .o file. The naming of the output follows ld64's convention which is slightly more consistent IMO (consistent `.lto.<extension>` for all the files). Reviewers: rafael, ruiu Subscribers: joker.eph, Bigcheese, llvm-commits Differential Revision: http://reviews.llvm.org/D18006 llvm-svn: 263055
2016-03-10 04:01:08 +08:00
[LTO] Implement parallel Codegen for LTO using splitCodeGen. Parallelism level can be chosen using the new --lto-jobs=K option where K is the number of threads used for CodeGen. It currently defaults to 1. llvm-svn: 266484
2016-04-16 06:38:10 +08:00
// LTO-related options.
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def lto_jobs: J<"lto-jobs=">, HelpText<"Number of threads to run codegen">;
def lto_aa_pipeline: J<"lto-aa-pipeline=">,
[LTO] Add --lto-aa-pipeline. Differential Revision: http://reviews.llvm.org/D20888 llvm-svn: 271605
2016-06-03 06:58:11 +08:00
HelpText<"AA pipeline to run during LTO. Used in conjunction with -lto-newpm-passes">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def lto_newpm_passes: J<"lto-newpm-passes=">,
[LTO] Add the ability to specify a subset of passes to run. Differential Revision: http://reviews.llvm.org/D20267 llvm-svn: 269605
2016-05-16 03:29:38 +08:00
HelpText<"Passes to run during LTO">;
Accept both single and double dashes for all options. This is a follow-up patch to r273218. GNU ld accepts both "--" and "-" for all multi-letter options except "-o". This patch makes lld compatible with that behavior. llvm-svn: 273256
2016-06-21 16:45:50 +08:00
def disable_verify: F<"disable-verify">;
def mllvm: S<"mllvm">;
def save_temps: F<"save-temps">;