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Contents of README:gold is an ELF linker. It is intended to have complete support for ELF and to run as fast as possible on modern systems. For normal use it is a drop-in replacement for the older GNU linker. gold is part of the GNU binutils. See ../binutils/README for more general notes, including where to send bug reports. gold was originally developed at Google, and was contributed to the Free Software Foundation in March 2008. At Google it was designed by Ian Lance Taylor, with major contributions by Cary Coutant, Craig Silverstein, and Andrew Chatham. The existing GNU linker manual is intended to be accurate documentation for features which gold supports. gold supports most of the features of the GNU linker for ELF targets. Notable omissions--features of the GNU linker not currently supported in gold--are: * MRI compatible linker scripts * cross-reference reports (--cref) * various other minor options Notes on the code ================= These are some notes which may be helpful to people working on the source code of gold itself. gold is written in C++. It is a GNU program, and therefore follows the GNU formatting standards as modified for C++. Source documents in order of decreasing precedence: http://www.gnu.org/prep/standards/ http://gcc.gnu.org/onlinedocs/libstdc++/manual/source_code_style.html http://www.zembu.com/eng/procs/c++style.html The linker is intended to have complete support for cross-compilation, while still supporting the normal case of native linking as fast as possible. In order to do this, many classes are actually templates whose parameter is the ELF file class (e.g., 32 bits or 64 bits). The C++ code is the same, but we don't pay the execution time cost of always using 64-bit integers if the target is 32 bits. Many of these class templates also have an endianness parameter: true for big-endian, false for little-endian. The linker is multi-threaded. The Task class represents a single unit of work. Task objects are stored on a single Workqueue object. Tasks communicate via Task_token objects. Task_token objects are only manipulated while holding the master Workqueue lock. Relatively few mutexes are used. Build requirements ================== The gold source code uses templates heavily. Building it requires a recent version of g++. g++ 4.0.3 and 4.1.3 are known to work. g++ 3.2, 3.4.3, and 4.1.2 are known to fail. The linker script parser uses features which are only in newer versions of bison. bison 2.3 is known to work. bison 1.26 is known to fail. If you are building gold from an official binutils release, the bison output should already be included. Copyright (C) 2012-2020 Free Software Foundation, Inc. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. |
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CVS/ 22-Mar-2023 04:02 -
po/ 22-Mar-2023 04:01 -
testsuite/ 22-Mar-2023 04:01 -
ChangeLog 21-Mar-2023 17:40 8.4K
ChangeLog-0815 21-Mar-2023 17:40 737K
ChangeLog-2016 21-Mar-2023 17:40 64K
ChangeLog-2017 21-Mar-2023 17:40 31K
ChangeLog-2018 21-Mar-2023 17:40 30K
ChangeLog-2019 21-Mar-2023 17:40 10K
Makefile.am 21-Mar-2023 17:40 11K
Makefile.in 21-Mar-2023 17:40 61K
NEWS 21-Mar-2023 17:40 2.2K
README 21-Mar-2023 17:40 2.8K
TODO 21-Mar-2023 17:40 969
aarch64-reloc-property.cc 21-Mar-2023 17:40 5.1K
aarch64-reloc-property.h 21-Mar-2023 17:40 7.0K
aarch64-reloc.def 21-Mar-2023 17:40 14K
aarch64.cc 21-Mar-2023 17:40 269K
aclocal.m4 21-Mar-2023 17:40 44K
archive.cc 21-Mar-2023 17:40 38K
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arm-reloc-property.cc 21-Mar-2023 17:40 9.3K
arm-reloc-property.h 21-Mar-2023 17:40 11K
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arm.cc 21-Mar-2023 17:40 422K
attributes.cc 21-Mar-2023 17:40 13K
attributes.h 21-Mar-2023 17:40 11K
binary.cc 21-Mar-2023 17:40 11K
binary.h 21-Mar-2023 17:40 3.2K
common.cc 21-Mar-2023 17:40 9.6K
common.h 21-Mar-2023 17:40 1.6K
compressed_output.cc 21-Mar-2023 17:40 10K
compressed_output.h 21-Mar-2023 17:40 2.6K
config.in 21-Mar-2023 17:40 8.1K
configure 21-Mar-2023 17:40 343K
configure.ac 21-Mar-2023 17:40 22K
configure.tgt 21-Mar-2023 17:40 4.3K
copy-relocs.cc 21-Mar-2023 17:40 8.7K
copy-relocs.h 21-Mar-2023 17:40 5.9K
cref.cc 21-Mar-2023 17:40 10K
cref.h 21-Mar-2023 17:40 2.0K
debug.h 21-Mar-2023 17:40 2.5K
defstd.cc 21-Mar-2023 17:40 7.6K
defstd.h 21-Mar-2023 17:40 1.1K
descriptors.cc 21-Mar-2023 17:40 7.9K
descriptors.h 21-Mar-2023 17:40 3.6K
dirsearch.cc 21-Mar-2023 17:40 7.0K
dirsearch.h 21-Mar-2023 17:40 2.8K
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dwp.cc 21-Mar-2023 17:40 72K
dwp.h 21-Mar-2023 17:40 3.2K
dynobj.cc 21-Mar-2023 17:40 55K
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ehframe.cc 21-Mar-2023 17:40 40K
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errors.cc 21-Mar-2023 17:40 9.9K
errors.h 21-Mar-2023 17:40 4.1K
expression.cc 21-Mar-2023 17:40 36K
ffsll.c 21-Mar-2023 17:40 1.4K
fileread.cc 21-Mar-2023 17:40 30K
fileread.h 21-Mar-2023 17:40 17K
freebsd.h 21-Mar-2023 17:40 3.0K
ftruncate.c 21-Mar-2023 17:40 2.4K
gc.cc 21-Mar-2023 17:40 2.2K
gc.h 21-Mar-2023 17:40 13K
gdb-index.cc 21-Mar-2023 17:40 40K
gdb-index.h 21-Mar-2023 17:40 7.3K
gold-threads.cc 21-Mar-2023 17:40 9.0K
gold-threads.h 21-Mar-2023 17:40 5.6K
gold.cc 21-Mar-2023 17:40 30K
gold.h 21-Mar-2023 17:40 9.0K
i386.cc 21-Mar-2023 17:40 140K
icf.cc 21-Mar-2023 17:40 42K
icf.h 21-Mar-2023 17:40 6.7K
incremental-dump.cc 21-Mar-2023 17:40 17K
incremental.cc 21-Mar-2023 17:40 96K
incremental.h 21-Mar-2023 17:40 64K
int_encoding.cc 21-Mar-2023 17:40 3.5K
int_encoding.h 21-Mar-2023 17:40 4.9K
layout.cc 21-Mar-2023 17:40 197K
layout.h 21-Mar-2023 17:40 52K
main.cc 21-Mar-2023 17:40 10K
mapfile.cc 21-Mar-2023 17:40 10K
mapfile.h 21-Mar-2023 17:40 2.9K
merge.cc 21-Mar-2023 17:40 19K
merge.h 21-Mar-2023 17:40 15K
mips.cc 21-Mar-2023 17:40 440K
mremap.c 21-Mar-2023 17:40 2.4K
nacl.cc 21-Mar-2023 17:40 1.3K
nacl.h 21-Mar-2023 17:40 6.9K
object.cc 21-Mar-2023 17:40 111K
object.h 21-Mar-2023 17:40 94K
options.cc 21-Mar-2023 17:40 45K
options.h 21-Mar-2023 17:40 86K
output.cc 21-Mar-2023 17:40 158K
output.h 21-Mar-2023 17:40 146K
parameters.cc 21-Mar-2023 17:40 9.6K
parameters.h 21-Mar-2023 17:40 6.3K
plugin.cc 21-Mar-2023 17:40 62K
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powerpc.cc 21-Mar-2023 17:40 373K
pread.c 21-Mar-2023 17:40 1.4K
readsyms.cc 21-Mar-2023 17:40 26K
readsyms.h 21-Mar-2023 17:40 13K
reduced_debug_output.cc 21-Mar-2023 17:40 14K
reduced_debug_output.h 21-Mar-2023 17:40 4.2K
reloc-types.h 21-Mar-2023 17:40 2.7K
reloc.cc 21-Mar-2023 17:40 54K
reloc.h 21-Mar-2023 17:40 38K
resolve.cc 21-Mar-2023 17:40 39K
s390.cc 21-Mar-2023 17:40 147K
script-c.h 21-Mar-2023 17:40 16K
script-sections.cc 21-Mar-2023 17:40 128K
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script.cc 21-Mar-2023 17:40 96K
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sparc.cc 21-Mar-2023 17:40 134K
stringpool.cc 21-Mar-2023 17:40 15K
stringpool.h 21-Mar-2023 17:40 13K
symtab.cc 21-Mar-2023 17:40 118K
symtab.h 21-Mar-2023 17:40 64K
system.h 21-Mar-2023 17:40 4.8K
target-reloc.h 21-Mar-2023 17:40 32K
target-select.cc 21-Mar-2023 17:40 5.6K
target-select.h 21-Mar-2023 17:40 8.4K
target.cc 21-Mar-2023 17:40 7.3K
target.h 21-Mar-2023 17:40 41K
tilegx.cc 21-Mar-2023 17:40 189K
timer.cc 21-Mar-2023 17:40 3.1K
timer.h 21-Mar-2023 17:40 1.8K
tls.h 21-Mar-2023 17:40 2.5K
token.h 21-Mar-2023 17:40 7.9K
version.cc 21-Mar-2023 17:40 2.3K
workqueue-internal.h 21-Mar-2023 17:40 2.8K
workqueue-threads.cc 21-Mar-2023 17:40 4.7K
workqueue.cc 21-Mar-2023 17:40 12K
workqueue.h 21-Mar-2023 17:40 7.4K
x86_64.cc 21-Mar-2023 17:40 205K
yyscript.y 21-Mar-2023 17:40 30K
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