autoconf-archive-2012.04.07 released [stable]

[Peter Simons]

A new stable version of the GNU Autoconf Archive has been released for download.

Here are the compressed sources:
  http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2012.04.07.tar.gz  
 (880KB)
  http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2012.04.07.tar.bz2 
  (644KB)
  http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2012.04.07.tar.xz  
 (496KB)

Here are the GPG detached signatures[*]:
  
http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2012.04.07.tar.gz.sig
  
http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2012.04.07.tar.bz2.sig
  
http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2012.04.07.tar.xz.sig

Use a mirror for higher download bandwidth:
  http://www.gnu.org/order/ftp.html

[*] Use a .sig file to verify that the corresponding file (without the
.sig suffix) is intact.  First, be sure to download both the .sig file
and the corresponding tarball.  Then, run a command like this:

  gpg --verify autoconf-archive-2012.04.07.tar.gz.sig

If that command fails because you don't have the required public key,
then run this command to import it:

  gpg --keyserver keys.gnupg.net --recv-keys 99089D72

and rerun the 'gpg --verify' command.

This release was bootstrapped with the following tools:
  Autoconf 2.68
  Automake 1.11.2
  Gnulib v0.0-7311-g55cc8db

NEWS

* Noteworthy changes in release 2012.04.07 (2012-04-07) [stable]

  The macro AX_CXX_COMPILE_STDCXX_11 has been added, which determines the
  compiler switches that need to be added to be passed in order to enable C++11
  support in the compiler. See <https://savannah.gnu.org/patch/?7735> for
  further details.

  The new macro AX_CXX_DELETE_METHOD has been added which checks whether the
  C++11 '= delete' syntax for suppressing undesired implicit methods is
  supported. Further details are at <https://savannah.gnu.org/patch/?7735>.

  The macros AX_BOOST_CHRONO and AX_BOOST_LOCALE have been added which detect
  the Boost.Chrono and Boost.Locale library respectively. Further details are
  at <http://savannah.gnu.org/patch/?7721> and
  <http://savannah.gnu.org/patch/?7743>.

  Support for automatic detection of dynamic libraries on Mac OS X (*.dylib)
  has been improved in all Boost macros. <http://savannah.gnu.org/patch/?7719>
  has further details.

  Portability of AX_CHECK_LIBRARY has been improved so that the macro can be
  used with Autoconf versions prior to 2.64.

  AX_GCC_ARCHFLAG has been extended to support new Intel/AMD CPUs. See
  <http://savannah.gnu.org/patch/?7707> for further details.

  An endless recursion-bug in AX_COUNT_CPUS has been fixed. See
  <http://savannah.gnu.org/patch/?7697> for further details.

  AX_LUA_LIBS has been fixed to work with Lua 5.2.

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