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Nick Alcock 5dba6f05b7 ld: new options --ctf-variables and --ctf-share-types
libctf recently changed to make it possible to not emit the CTF
variables section.  Make this the default for ld: the variables section
is a simple name -> type mapping, and the names can be quite voluminous.
Nothing in the variables section appears in the symbol table, by
definition, so GDB cannot make use of them: special-purpose projects
that implement their own analogues of symbol table lookup can do so, but
they'll need to tell the linker to emit the variables section after all.

The new --ctf-variables option does this.

The --ctf-share-types option (valid values "share-duplicated" and
"share-unconflicted") allow the caller to specify the CTF link mode.
Most users will want share-duplicated, since it allows for more
convenient debugging: but very large projects composed of many decoupled
components may want to use share-unconflicted mode, which places types
that appear in only one TU into per-TU dicts.  (They may also want to
relink the CTF using the ctf_link API and cu-mapping, to make their
"components" larger than a single TU.  Right now the linker does not
expose the CU-mapping machinery.  Perhaps it should in future to make
this use case easier.)

For now, giving the linker the ability to emit share-duplicated CTF lets
us add testcases for that mode to the testsuite.

ld/
	* ldlex.h (option_values) <OPTION_CTF_VARIABLES,
	OPTION_NO_CTF_VARIABLES, OPTION_CTF_SHARE_TYPES>: New.
	* ld.h (ld_config_type) <ctf_variables, ctf_share_duplicated>:
	New fields.
	* ldlang.c (lang_merge_ctf): Use them.
	* lexsup.c (ld_options): Add ctf-variables, no-ctf-variables,
	ctf-share-types.
	(parse_args) <OPTION_CTF_VARIABLES, OPTION_NO_CTF_VARIABLES,
	OPTION_CTF_SHARE_TYPES>: New cases.
	* ld.texi: Document new options.
	* NEWS: Likewise.
2020-07-22 18:03:57 +01:00
bfd bfd: xtensa: pr26246: fix removed_literal_compare 2020-07-22 02:58:34 -07:00
binutils binutils: objdump: ctf: drop incorrect linefeeds 2020-07-22 18:02:19 +01:00
config Add markers for binutils 2.35 branch 2020-07-04 10:16:22 +01:00
contrib
cpu Add markers for binutils 2.35 branch 2020-07-04 10:16:22 +01:00
elfcpp Add markers for binutils 2.35 branch 2020-07-04 10:16:22 +01:00
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gas MIPS/GAS/testsuite: Fix JALR relocation tests for IRIX targets 2020-07-22 12:46:00 +01:00
gdb Correct an error in the remote protocol specification 2020-07-22 16:15:29 +01:00
gdbserver gdbserver: handle running threads in qXfer:threads:read 2020-07-22 12:32:53 +01:00
gdbsupport gdb/riscv: delete target descriptions when gdb exits 2020-07-17 21:15:32 +01:00
gnulib
gold gold: Update x32 test 2020-07-19 07:30:42 -07:00
gprof Update Turkish translation in the gprof sub-directory 2020-07-09 14:25:11 +01:00
include libctf, link: tie in the deduplicating linker 2020-07-22 18:02:19 +01:00
intl
ld ld: new options --ctf-variables and --ctf-share-types 2020-07-22 18:03:57 +01:00
libctf libctf, link: tie in the deduplicating linker 2020-07-22 18:02:19 +01:00
libdecnumber
libiberty Sync config, include and libiberty with GCC 2020-06-24 16:52:48 -07:00
opcodes Revert "x86: Don't display eiz with no scale" 2020-07-21 14:20:11 +02:00
readline Update readline/README to mention patchlevel 2020-06-30 15:17:07 -06:00
sim sim/igen: Fix linker error with -fno-common 2020-07-03 21:03:47 +02:00
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ChangeLog Add markers for binutils 2.35 branch 2020-07-04 10:16:22 +01:00
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		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.