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Tom Tromey 5e03027845 Add configure check for std::thread
This adds a configure check for std::thread.  This is needed because
std::thread is not available on some systems, like some versions of
mingw and DJGPP.

This also adds configury to make sure that a threaded gdb links
against the correct threading library (-lpthread or the like), and
passes the right flags (e.g., -pthread) to the compilations.

Note that this also links gdbserver against the thread library.  This
is not strictly necessary at this point in the series, but a later
patch will change gdbsupport to use pthread_sigmask, at which point
this will be needed.

gdb/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* acinclude.m4: Include ax_pthread.m4.
	* Makefile.in (PTHREAD_CFLAGS, PTHREAD_LIBS): New variables.
	(INTERNAL_CFLAGS_BASE): Use PTHREAD_CFLAGS.
	(CLIBS): Use PTHREAD_LIBS.
	(aclocal_m4_deps): Add ax_pthread.m4.
	* config.in, configure: Rebuild.
	* gdbsupport/common.m4 (GDB_AC_COMMON): Check for std::thread.

gdb/gdbserver/ChangeLog
2019-11-26  Tom Tromey  <tom@tromey.com>

	* Makefile.in (PTHREAD_CFLAGS, PTHREAD_LIBS): New variables.
	(INTERNAL_CFLAGS_BASE): Use PTHREAD_CFLAGS.
	(GDBSERVER_LIBS): Use PTHREAD_LIBS.
	* acinclude.m4: Include ax_pthread.m4.
	* config.in, configure: Rebuild.

Change-Id: I00ec55db6077f2615421a93461fc3be57e916aa0
2019-11-26 14:02:57 -07:00
bfd Fix comparison operations in SH code that trigger warning in clang. 2019-11-26 14:06:12 +00:00
binutils Introduce new section flag: SEC_ELF_OCTETS 2019-11-25 14:32:19 +10:30
config
contrib
cpu cpu: fix comment in bpf.cpu 2019-11-20 10:16:24 +01:00
elfcpp
etc
gas Fix "psb CSYNC" and "bti C". 2019-11-25 18:27:26 +00:00
gdb Add configure check for std::thread 2019-11-26 14:02:57 -07:00
gnulib Add no-dist to gnulib configure 2019-11-15 13:48:27 -07:00
gold Introduce new .text.sorted.* sections. 2019-11-26 17:20:10 +01:00
gprof Revert previous delta. 2019-11-15 11:52:50 +00:00
include Introduce new section flag: SEC_ELF_OCTETS 2019-11-25 14:32:19 +10:30
intl
ld Introduce new .text.sorted.* sections. 2019-11-26 17:20:10 +01:00
libctf
libdecnumber
libiberty
opcodes Arm: Change CRC from fpu feature to archititectural extension 2019-11-22 13:47:26 +00:00
readline Minor updates to readline configury 2019-11-15 13:46:54 -07:00
sim
texinfo
zlib
.cvsignore
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lt~obsolete.m4
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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.