binutils-gdb/ld
Alan Modra af4fa23fba PR24567, assertion failure in ldlang.c:6868 when compiling with -flto
As the existing comment said: "a common ought to be overridden by a
def in a -flto object".  This patch makes the code actually do that,
rather than allowing a normal object file common to override a -flto
defined symbol.

	PR 24567
	* plugin.c (plugin_notice): Do not let a common symbol override
	a non-common definition in IR.
2019-05-17 21:06:07 +09:30
..
emulparams Automatic makefile dependencies for generated ld/e*.c 2019-04-13 12:13:22 +09:30
emultempl MSP430 Linker: Define __crt0_init_bss/__crt0_movedata symbols when .lower or .either prefixed sections are present. 2019-04-17 15:05:08 +01:00
po Updated Russian translation for the ld subdirectory. 2019-04-26 15:29:39 +01:00
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 PicoJava weak undefined symbols 2019-05-06 11:41:28 +09:30
.gitignore
aclocal.m4
ChangeLog PR24567, assertion failure in ldlang.c:6868 when compiling with -flto 2019-05-17 21:06:07 +09:30
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-2015
ChangeLog-2016
ChangeLog-2017
ChangeLog-2018
ChangeLog-9197
ChangeLog-9899
config.in
configure Automatic makefile dependencies for generated ld/e*.c 2019-04-13 12:13:22 +09:30
configure.ac Automatic makefile dependencies for generated ld/e*.c 2019-04-13 12:13:22 +09:30
configure.host
configure.tgt x86: Remove i386-*-kaos* and i386-*-chaos targets 2019-04-08 11:58:51 -07:00
deffile.h
deffilep.y
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.texi tweak for pod2man 2019-04-30 22:04:32 +09:30
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
ldctor.h
ldemul.c
ldemul.h
ldexp.c Allow the use of the ORIGIN and LENGTH attributes in expressions inside MEMORY regions. 2019-03-06 15:20:29 +00:00
ldexp.h PR24008, Wrong value of ternary expression in map file 2019-01-28 09:59:29 +10:30
ldfile.c
ldfile.h
ldgram.y
ldint.texi
ldlang.c ld: Add --no-print-map-discarded option 2019-04-11 10:16:31 -07:00
ldlang.h
ldlex-wrapper.c
ldlex.h ld: Add --no-print-map-discarded option 2019-04-11 10:16:31 -07:00
ldlex.l PR24411, Division is not accepted in MEMORY length expression 2019-04-03 13:01:49 +10:30
ldmain.c ld: Add --no-print-map-discarded option 2019-04-11 10:16:31 -07:00
ldmain.h
ldmisc.c
ldmisc.h
ldver.c
ldver.h
ldwrite.c
ldwrite.h
lexsup.c ld: Add --no-print-map-discarded option 2019-04-11 10:16:31 -07:00
MAINTAINERS
Makefile.am Fix automatic makefile dependencies for generated ld/e*.c 2019-04-23 17:02:44 +09:30
Makefile.in Fix automatic makefile dependencies for generated ld/e*.c 2019-04-23 17:02:44 +09:30
mri.c
mri.h
NEWS ld: Add --no-print-map-discarded option 2019-04-11 10:16:31 -07:00
pe-dll.c
pe-dll.h
pep-dll.c
pep-dll.h
plugin.c PR24567, assertion failure in ldlang.c:6868 when compiling with -flto 2019-05-17 21:06:07 +09:30
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.