binutils-gdb/ld
H.J. Lu bba037e0ae Always keep sections marked with SEC_KEEP
SEC_KEEP check in elf_gc_sweep was missing in commit:

commit bde6f3eb6d
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Jan 8 01:43:23 2010 +0000

    Set SEC_KEEP on section XXX for undefined __start_XXX/__stop_XXX

    bfd/

    2010-01-07  H.J. Lu  <hongjiu.lu@intel.com>

      PR ld/11133
      * elflink.c (_bfd_elf_gc_mark_hook): Check section XXX for
      undefined __start_XXX/__stop_XXX in all input files and set
      SEC_KEEP.

This patch adds SEC_KEEP check to elf_gc_sweep.

bfd/

	PR ld/19161
	* elflink.c (elf_gc_sweep): Always keep sections marked with
	SEC_KEEP.

ld/testsuite/

	PR ld/19161
	* ld-gc/gc.exp: Run pr19161 test.
	* ld-gc/pr19161-1.c: New file.
	* ld-gc/pr19161-2.c: Likewise.
	* ld-gc/pr19161.d: Likewise.
2015-10-22 12:23:03 -07:00
..
emulparams Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
emultempl Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
po Updated Chinese translation for the linker (again!) 2015-10-14 09:55:30 +01:00
scripttempl New ARC implementation. 2015-10-07 14:20:19 +01:00
testsuite Always keep sections marked with SEC_KEEP 2015-10-22 12:23:03 -07:00
.gitignore
aclocal.m4
ChangeLog Properly check --enable-compressed-debug-sections={yes,all} 2015-10-22 07:44:05 -07:00
ChangeLog-0001
ChangeLog-0203
ChangeLog-2004
ChangeLog-2005
ChangeLog-2006
ChangeLog-2007
ChangeLog-2008
ChangeLog-2009 Remove trailing spaces in ld 2015-08-12 04:46:43 -07:00
ChangeLog-2010
ChangeLog-2011
ChangeLog-2012
ChangeLog-2013
ChangeLog-2014
ChangeLog-9197 Remove trailing spaces in ld 2015-08-12 04:46:43 -07:00
ChangeLog-9899
config.in Reset x86 Linux targets to not compressing debug sections by default. Enable compression of debug sections by default in the linker, if so configured. 2015-10-21 13:15:39 +01:00
configure Properly check --enable-compressed-debug-sections={yes,all} 2015-10-22 07:44:05 -07:00
configure.ac Properly check --enable-compressed-debug-sections={yes,all} 2015-10-22 07:44:05 -07:00
configure.host Remove trailing spaces in ld 2015-08-12 04:46:43 -07:00
configure.tgt New ARC implementation. 2015-10-07 14:20:19 +01:00
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: Extend options for altering orphan handling behaviour. 2015-09-04 22:30:55 +01:00
ld.texinfo Add "-z call-nop=PADDING" option to ld 2015-10-22 04:56:39 -07:00
ldbuildid.c
ldbuildid.h
ldcref.c
ldctor.c Add output_type to bfd_link_info 2015-08-18 05:51:19 -07:00
ldctor.h
ldemul.c ld: Extend options for altering orphan handling behaviour. 2015-09-04 22:30:55 +01:00
ldemul.h
ldexp.c When evaluating a ternary operator in a linker script, copy the symbol flags. 2015-10-15 13:28:27 +01:00
ldexp.h Delay converting linker script defined symbols from absolute 2015-09-18 12:39:16 +09:30
ldfile.c Add output_type to bfd_link_info 2015-08-18 05:51:19 -07:00
ldfile.h
ldgram.y
ldint.texinfo Remove trailing spaces in ld 2015-08-12 04:46:43 -07:00
ldlang.c Delay converting linker script defined symbols from absolute 2015-09-18 12:39:16 +09:30
ldlang.h
ldlex-wrapper.c
ldlex.h Add --no-dynamic-linker option to ld, for static PIE use 2015-09-20 15:52:27 +09:30
ldlex.l
ldmain.c Reset x86 Linux targets to not compressing debug sections by default. Enable compression of debug sections by default in the linker, if so configured. 2015-10-21 13:15:39 +01:00
ldmain.h
ldmisc.c
ldmisc.h
ldver.c
ldver.h
ldwrite.c Add output_type to bfd_link_info 2015-08-18 05:51:19 -07:00
ldwrite.h
lexsup.c Reset x86 Linux targets to not compressing debug sections by default. Enable compression of debug sections by default in the linker, if so configured. 2015-10-21 13:15:39 +01:00
MAINTAINERS
Makefile.am New ARC implementation. 2015-10-07 14:20:19 +01:00
Makefile.in New ARC implementation. 2015-10-07 14:20:19 +01:00
mri.c
mri.h
NEWS Reset x86 Linux targets to not compressing debug sections by default. Enable compression of debug sections by default in the linker, if so configured. 2015-10-21 13:15:39 +01:00
pe-dll.c Add output_type to bfd_link_info 2015-08-18 05:51:19 -07:00
pe-dll.h
pep-dll.c
pep-dll.h
plugin.c Remove link_info.pic 2015-08-19 12:53:54 +09:30
plugin.h
README
stamp-h.in
sysdep.h
testplug2.c
testplug3.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.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.