binutils-gdb/ld
Nick Clifton 76f0cad6f4 This is a fix for PR ld/16744 which showed that an object file linked with -r and -z [no]execstack
would not honour the [no]execstack.  Fully linked binaries use a special segment to indicate the
state of the stack, but relocatable object files only have sections, and .note.GNU-stack was not
being created.

	* emultempl/elf32.em (_after_open): Create a .note.GNU-stack
	section when performing a relocatable link with -z [no]execstack
	specified.
2014-03-31 13:14:44 +01:00
..
emulparams Update copyright years 2014-03-05 22:16:15 +10:30
emultempl This is a fix for PR ld/16744 which showed that an object file linked with -r and -z [no]execstack 2014-03-31 13:14:44 +01:00
po Update copyright years 2014-03-05 22:16:15 +10:30
scripttempl Improve .rsrc section merging again. This time with an algorithm that 2014-03-19 14:46:15 +00:00
testsuite [AArch64] Fixup ld-aarch64/eh-frame.d expected PC range. 2014-03-31 12:58:48 +01:00
.gitignore
aclocal.m4
ChangeLog This is a fix for PR ld/16744 which showed that an object file linked with -r and -z [no]execstack 2014-03-31 13:14:44 +01:00
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-9197
ChangeLog-9899
config.in
configure
configure.host Update copyright years 2014-03-05 22:16:15 +10:30
configure.in Update copyright years 2014-03-05 22:16:15 +10:30
configure.tgt Update copyright years 2014-03-05 22:16:15 +10:30
deffile.h Update copyright years 2014-03-05 22:16:15 +10:30
deffilep.y Update copyright years 2014-03-05 22:16:15 +10:30
dep-in.sed
elf-hints-local.h
fdl.texi
gen-doc.texi Update copyright years 2014-03-05 22:16:15 +10:30
genscrba.sh
genscripts.sh Update copyright years 2014-03-05 22:16:15 +10:30
h8-doc.texi Update copyright years 2014-03-05 22:16:15 +10:30
ld.h Update copyright years 2014-03-05 22:16:15 +10:30
ld.texinfo 2014-03-21 Christopher Faylor <me.binutils2014@cgf.cx> 2014-03-21 13:33:43 -04:00
ldcref.c Update copyright years 2014-03-05 22:16:15 +10:30
ldctor.c Update copyright years 2014-03-05 22:16:15 +10:30
ldctor.h Update copyright years 2014-03-05 22:16:15 +10:30
ldemul.c Update copyright years 2014-03-05 22:16:15 +10:30
ldemul.h Update copyright years 2014-03-05 22:16:15 +10:30
ldexp.c Update copyright years 2014-03-05 22:16:15 +10:30
ldexp.h Update copyright years 2014-03-05 22:16:15 +10:30
ldfile.c Remove search path from -l:namespec DT_NEEDED 2014-03-14 12:54:24 +10:30
ldfile.h Update copyright years 2014-03-05 22:16:15 +10:30
ldgram.y Update copyright years 2014-03-05 22:16:15 +10:30
ldint.texinfo Update copyright years 2014-03-05 22:16:15 +10:30
ldlang.c Remove search path from -l:namespec DT_NEEDED 2014-03-14 12:54:24 +10:30
ldlang.h Remove search path from -l:namespec DT_NEEDED 2014-03-14 12:54:24 +10:30
ldlex-wrapper.c Update copyright years 2014-03-05 22:16:15 +10:30
ldlex.h Update copyright years 2014-03-05 22:16:15 +10:30
ldlex.l Update copyright years 2014-03-05 22:16:15 +10:30
ldmain.c Scan all input files for symbol reference warning 2014-03-27 08:12:17 -07:00
ldmain.h Update copyright years 2014-03-05 22:16:15 +10:30
ldmisc.c Update copyright years 2014-03-05 22:16:15 +10:30
ldmisc.h Update copyright years 2014-03-05 22:16:15 +10:30
ldver.c Update copyright years 2014-03-05 22:16:15 +10:30
ldver.h Update copyright years 2014-03-05 22:16:15 +10:30
ldwrite.c Update copyright years 2014-03-05 22:16:15 +10:30
ldwrite.h Update copyright years 2014-03-05 22:16:15 +10:30
lexsup.c Update copyright years 2014-03-05 22:16:15 +10:30
MAINTAINERS Update copyright years 2014-03-05 22:16:15 +10:30
Makefile.am Improve .rsrc section merging with better handling of the alignment adjustments 2014-03-19 08:51:20 +00:00
Makefile.in Improve .rsrc section merging with better handling of the alignment adjustments 2014-03-19 08:51:20 +00:00
mri.c Update copyright years 2014-03-05 22:16:15 +10:30
mri.h Update copyright years 2014-03-05 22:16:15 +10:30
NEWS Update copyright years 2014-03-05 22:16:15 +10:30
pe-dll.c Update copyright years 2014-03-05 22:16:15 +10:30
pe-dll.h Update copyright years 2014-03-05 22:16:15 +10:30
pep-dll.c Update copyright years 2014-03-05 22:16:15 +10:30
pep-dll.h Update copyright years 2014-03-05 22:16:15 +10:30
plugin.c Update copyright years 2014-03-05 22:16:15 +10:30
plugin.h Update copyright years 2014-03-05 22:16:15 +10:30
README Update copyright years 2014-03-05 22:16:15 +10:30
stamp-h.in
sysdep.h Update copyright years 2014-03-05 22:16:15 +10:30
testplug.c Update copyright years 2014-03-05 22:16:15 +10:30
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) 2012-2014 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.