binutils-gdb/ld
Alan Modra 128bf1fe60 LTO object insertion point
This is a mostly cosmetic fix for cases like PR24873 where LTO
recompiled objects were supposed to be inserted inside a group.  The
specific case handled by this patch is when the first file inside a
group is an archive, the first file claimed by the plugin.  Prior to
this patch we would have inserted the recompiled objects before the
group, which doesn't matter really since the entire group will be
reloaded, but it looks a little wrong in map files.

	PR 24873
	* ldlang.c (find_replacements_insert_point): Return "before" flag.
	(find_next_input_statement): New function.
	(lang_process): When placing recompiled LTO objects before a
	claimed archive, place them immediately before in the statement
	list.
2019-08-06 15:47:41 +09:30
..
emulparams s12z genelf.em 2019-05-30 01:01:42 +09:30
emultempl Rename lang_output_section_statement to lang_os_list 2019-08-01 11:57:25 +09:30
po Regen POTFILES for bpf 2019-05-24 23:15:07 +09:30
scripttempl Use the correct names for the init and fini array start symbols in the default Pru linker script. 2019-05-09 10:26:11 +01:00
testsuite PowerPC tlsie test fix 2019-08-02 12:41:05 +09:30
.gitignore
aclocal.m4
ChangeLog LTO object insertion point 2019-08-06 15:47:41 +09:30
ChangeLog-0001
ChangeLog-0203
ChangeLog-2004
ChangeLog-2005
ChangeLog-2006 Add copyright notices 2012-12-10 12:48:03 +00:00
ChangeLog-2007
ChangeLog-2008
ChangeLog-2009
ChangeLog-2010
ChangeLog-2011
ChangeLog-2012
ChangeLog-2013
ChangeLog-2014
ChangeLog-2015
ChangeLog-2016 ChangeLog rotation 2017-01-02 13:55:05 +10:30
ChangeLog-2017
ChangeLog-2018
ChangeLog-9197
ChangeLog-9899
config.in
configure Regenerate with approved autotools version 2019-06-14 10:30:35 +09:30
configure.ac Automatic makefile dependencies for generated ld/e*.c 2019-04-13 12:13:22 +09:30
configure.host Update year range in copyright notice of binutils files 2019-01-01 22:06:53 +10:30
configure.tgt ld: add support for eBPF 2019-05-23 19:34:15 +02:00
deffile.h
deffilep.y Update year range in copyright notice of binutils files 2019-01-01 22:06:53 +10:30
dep-in.sed
elf-hints-local.h
fdl.texi
gen-doc.texi
genscrba.sh Automatic makefile dependencies for generated ld/e*.c 2019-04-13 12:13:22 +09:30
genscripts.sh Fix automatic makefile dependencies for generated ld/e*.c 2019-04-23 17:02:44 +09:30
h8-doc.texi
ld.h ld: Add --no-print-map-discarded option 2019-04-11 10:16:31 -07:00
ld.texi LD/doc: Clarify `-rpath' option's semantics WRT link-time dependencies 2019-06-07 19:25:21 +01:00
ldbuildid.c Fix compile time warning when building the linker in a MinGw32 environment using gcc 8. 2019-05-08 16:54:16 +01:00
ldbuildid.h
ldcref.c
ldctor.c Update year range in copyright notice of binutils files 2019-01-01 22:06:53 +10:30
ldctor.h
ldemul.c
ldemul.h
ldexp.c
ldexp.h
ldfile.c Re: Have the linker report an error if the same script is used twice 2019-05-23 10:38:45 +09:30
ldfile.h Have the linker report an error if the same script is used twice. 2019-05-22 15:58:57 +01:00
ldgram.y
ldint.texi
ldlang.c LTO object insertion point 2019-08-06 15:47:41 +09:30
ldlang.h Rename lang_output_section_statement to lang_os_list 2019-08-01 11:57:25 +09:30
ldlex-wrapper.c
ldlex.h ld: Add --no-print-map-discarded option 2019-04-11 10:16:31 -07:00
ldlex.l PR24827, Linker loops forever if unterminated multi-line comment in script 2019-07-20 10:55:16 +09:30
ldmain.c Have the linker report an error if the same script is used twice. 2019-05-22 15:58:57 +01:00
ldmain.h
ldmisc.c
ldmisc.h
ldver.c
ldver.h
ldwrite.c
ldwrite.h
lexsup.c PR24806, Linking with -T inside --start-group/--end-group 2019-08-01 14:38:57 +09:30
MAINTAINERS
Makefile.am ld: add support for eBPF 2019-05-23 19:34:15 +02:00
Makefile.in Regenerate with approved autotools version 2019-06-14 10:30:35 +09:30
mri.c
mri.h
NEWS [LD, AArch64] Move ELF options behind -z 2019-06-06 12:21:14 +01:00
pe-dll.c
pe-dll.h
pep-dll.c
pep-dll.h
plugin.c ld/plugins: avoid shadowing a C library symbol 2019-06-25 12:02:23 +02:00
plugin.h
README
stamp-h.in
sysdep.h
testplug2.c
testplug3.c
testplug4.c
testplug.c
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.texi), as well as the
  beginnings of an internals manual (ldint.texi).

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.texi 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) 2012-2019 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.