binutils-gdb/ld
Ed Schouten 4e791d0fb1 Fixes for a small number of compiler warnings
The ehdr_start_save variable does not need to be initialized.  However,
not initializing it will trigger a compiler warning when using older
versions of GCC.  Self-assignment unfortunately doesn't work for Clang
as Clang has a warning similar to -Winit-self as part of -Wall.

	* emultempl/elf32.em (gld*_before_allocation): Zero-initialize
	the ehdr_start_save variable.
2015-04-01 11:06:14 +10:30
..
emulparams Add support for Nuxi CloudABI on x86-64 2015-03-31 08:11:08 -07:00
emultempl Fixes for a small number of compiler warnings 2015-04-01 11:06:14 +10:30
po
scripttempl Adds support for generating notes in V850 binaries. 2015-02-24 17:54:09 +00:00
testsuite Remove --with-zlib from ld 2015-03-31 03:59:04 -07:00
.gitignore
aclocal.m4
ChangeLog Fixes for a small number of compiler warnings 2015-04-01 11:06:14 +10:30
ChangeLog-0001
ChangeLog-0203
ChangeLog-2004
ChangeLog-2005
ChangeLog-2006
ChangeLog-2007
ChangeLog-2008
ChangeLog-2009
ChangeLog-2010
ChangeLog-2011
ChangeLog-2012
ChangeLog-2013
ChangeLog-2014
ChangeLog-9197
ChangeLog-9899
config.in Remove --with-zlib from ld 2015-03-31 03:59:04 -07:00
configure Remove --with-zlib from ld 2015-03-31 03:59:04 -07:00
configure.ac Remove --with-zlib from ld 2015-03-31 03:59:04 -07:00
configure.host
configure.tgt Add support for Nuxi CloudABI on x86-64 2015-03-31 08:11:08 -07:00
deffile.h
deffilep.y
dep-in.sed
elf-hints-local.h
fdl.texi
gen-doc.texi
genscrba.sh
genscripts.sh
h8-doc.texi
ld.h
ld.texinfo Correct -z nocopyreloc doc 2015-03-02 16:57:08 +10:30
ldbuildid.c
ldbuildid.h
ldcref.c
ldctor.c
ldctor.h
ldemul.c
ldemul.h
ldexp.c Allow symbols in MEMORY region specification 2015-01-28 15:06:48 +10:30
ldexp.h
ldfile.c PR ld/17973 LTO file syms 2015-02-14 23:41:54 +10:30
ldfile.h
ldgram.y Allow symbols in MEMORY region specification 2015-01-28 15:06:48 +10:30
ldint.texinfo
ldlang.c Fixes a problem with the linker script parser not always handling the ! character in memort region attributes. 2015-02-27 16:19:57 +00:00
ldlang.h PR ld/17973 LTO file syms 2015-02-14 23:41:54 +10:30
ldlex-wrapper.c
ldlex.h
ldlex.l
ldmain.c Use %F instead of %X for einfo 2015-03-18 11:45:12 +10:30
ldmain.h
ldmisc.c
ldmisc.h
ldver.c Correct printed year in copyright notices 2015-01-02 01:08:15 +10:30
ldver.h
ldwrite.c
ldwrite.h
lexsup.c Fixes a problem where "ld -ixxx" would report an error of "ld: bad -rpath option". 2015-02-23 15:33:56 +00:00
MAINTAINERS
Makefile.am Add support for Nuxi CloudABI on x86-64 2015-03-31 08:11:08 -07:00
Makefile.in Add support for Nuxi CloudABI on x86-64 2015-03-31 08:11:08 -07:00
mri.c
mri.h
NEWS Mention support for LLVM plugin in NEWS 2015-02-13 07:54:21 -08:00
pe-dll.c
pe-dll.h
pep-dll.c
pep-dll.h
plugin.c PR ld/17973 LTO file syms 2015-02-14 23:41:54 +10:30
plugin.h Update plugin_maybe_claim 2015-02-07 11:01:22 -08:00
README
stamp-h.in
sysdep.h
testplug2.c Add a testcase for PR ld/17973 2015-02-14 06:26:20 -08:00
testplug3.c Remove unused dump_tv_tag 2015-02-11 13:35:07 -08:00
testplug.c The initial support for LDPT_GET_VIEW 2015-01-28 10:27:31 -08:00
TODO

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		README for LD

This is the GNU linker.  It is distributed with other "binary
utilities" which should be in ../binutils.  See ../binutils/README for
more general notes, including where to send bug reports.

There are many features of the linker:

* The linker uses a Binary File Descriptor library (../bfd)
  that it uses to read and write object files.  This helps
  insulate the linker itself from the format of object files.

* The linker supports a number of different object file
  formats.  It can even handle multiple formats at once:
  Read two input formats and write a third.

* The linker can be configured for cross-linking.

* The linker supports a control language.

* There is a user manual (ld.texinfo), as well as the
  beginnings of an internals manual (ldint.texinfo).

Installation
============

See ../binutils/README.

If you want to make a cross-linker, you may want to specify
a different search path of -lfoo libraries than the default.
You can do this by setting the LIB_PATH variable in ./Makefile
or using the --with-lib-path configure switch.

To build just the linker, make the target all-ld from the top level
directory (one directory above this one).

Porting to a new target
=======================

See the ldint.texinfo manual.

Reporting bugs etc
===========================

See ../binutils/README.

Known problems
==============

The Solaris linker normally exports all dynamic symbols from an
executable.  The GNU linker does not do this by default.  This is
because the GNU linker tries to present the same interface for all
similar targets (in this case, all native ELF targets).  This does not
matter for normal programs, but it can make a difference for programs
which try to dlopen an executable, such as PERL or Tcl.  You can make
the GNU linker export all dynamic symbols with the -E or
--export-dynamic command line option.

HP/UX 9.01 has a shell bug that causes the linker scripts to be
generated incorrectly.  The symptom of this appears to be "fatal error
- scanner input buffer overflow" error messages.  There are various
workarounds to this:
  * Build and install bash, and build with "make SHELL=bash".
  * Update to a version of HP/UX with a working shell (e.g., 9.05).
  * Replace "(. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc)" in
    genscripts.sh with "sh ${srcdir}..." (no parens) and make sure the
    emulparams script used exports any shell variables it sets.

Copyright (C) 2012-2015 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.