autoconf-archive-2013.04.06 released [stable]

[Peter Simons]

The GNU Autoconf Archive is a collection of more than 450 macros for GNU 
Autoconf
that have been contributed as free software by friendly supporters of the cause
From all over the Internet. Every single one of those macros can be re-used
without imposing any restrictions whatsoever on the licensing of the generated
configure script. In particular, it is possible to use all those macros in
configure scripts that are meant for non-free software. This policy is unusual 
for
a Free Software Foundation project. The FSF firmly believes that software ought 
to
be free, and software licenses like the GPL are specifically designed to ensure
that derivative work based on free software must be free as well. In case of
Autoconf, however, an exception has been made, because Autoconf is at such a
pivotal position in the software development tool chain that the benefits from
having this tool available as widely as possible outweigh the disadvantage that
some authors may choose to use it, too, for proprietary software.

Here are the compressed sources:
  http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.04.06.tar.gz  
 (1.1 MB)
  http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.04.06.tar.bz2 
 (768 KB)
  http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.04.06.tar.xz  
 (516 KB)
  http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.04.06.tar.lz  
 (515 KB)

Here are the GPG detached signatures[*]:
  
http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.04.06.tar.gz.sig
  
http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.04.06.tar.bz2.sig
  
http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.04.06.tar.xz.sig
  
http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.04.06.tar.lz.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-2013.04.06.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 2.69
  Automake 1.13.1
  Gnulib v0.0-7899-g34f8464

NEWS

* Noteworthy changes in release 2013.04.06 (2013-04-06) [stable]

  AX_PROG_CC_FOR_BUILD and AX_PROG_CXX_FOR_BUILD have been simplified to
  require only AC_CANONICAL_HOST instead of AC_CANONICAL_SYSTEM. Further
  details are available at <http://savannah.gnu.org/patch/?7989>.

  A substantially updated version of the formerly obsoleted AX_CHECK_GL macro
  has been added again in <http://savannah.gnu.org/patch/?7986>.

  The new macro AX_LIB_SAMTOOLS has been added to check for Samtools
  <http://samtools.sourceforge.net/>. See <http://savannah.gnu.org/patch/?7983>
  for further details.

  The new macro AX_LIB_TABIX has been added to check for Tabix
  <http://samtools.sourceforge.net/tabix.shtml>. Further details are available
  at <http://savannah.gnu.org/patch/?7984>.

  AX_CXX_COMPILE_STDCXX_11 has been extended to test for the "auto" keyword.
  Further details can be found at <http://savannah.gnu.org/patch/?7985>.

  Support for AIX has been improved in AX_PTHREAD. Further details are
  available at <http://savannah.gnu.org/patch/?7973>.

  AX_PYTHON_DEVEL's ability to detect the proper suffix for shared libraries
  has been improved. See <https://savannah.gnu.org/patch/?7953> for further
  details.

  AX_BOOST_PYTHON has been switched to AX_PYTHON_DEVEL. Further details are
  available at <http://savannah.gnu.org/patch/?7979> and at
  <http://savannah.gnu.org/patch/?7980>.

  Fixed AX_LIB_EXPAT not to overwrite $LIBS. Furthermore, linker flags are now
  returned in $EXPAT_LDFLAGS instead of $EXPAT_LIBS. Further details are
  available at <http://savannah.gnu.org/patch/?7968>.

  AX_PYTHON has been updated to use the "distutils" module to find Python's
  header files instead of depending on the "locate" command. Further details
  are at <http://savannah.gnu.org/patch/?7966>.

  AX_PYTHON_DEVEL has been extended to support ubuntu 13.04. See
  <http://savannah.gnu.org/patch/?7965> for further details.

  Incorrect CPU detection in AX_GCC_ARCHFLAG has been fixed. See
  <http://savannah.gnu.org/patch/?7978> for further details.

  AX_EXT has been extended to recognize AVX SIMD instructions.

  A release tarball was added that is compressed with the free lzip utility.

  AX_JNI_INCLUDE_DIR has been extended to support FreeBSD.

  AX_PYTHON has been extended to support ArchLinux. See
  <http://savannah.gnu.org/patch/?7951> for further details.

  AX_PYTHON_DEVEL has been extended to support ArchLinux. See
  <http://savannah.gnu.org/patch/?7953> for further details.

  A minor bug in AX_BOOST_ASIO has been fixed. Further details are at
  <http://savannah.gnu.org/patch/index.php?7959>.

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