GNU Automake 1.12.1 released

[Stefano Lattarini]

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We are pleased to announce the Automake 1.12.1 maintenance release.

This release:

  - fixes few minor bugs, and some weaknesses in the Automake's own
    testsuite and build system;

  - removes and some inefficiencies in the implementation of the 'check'
    and 'recheck' targets (as offered by the parallel testuite harness);

  - introduces several new warnings meant to inform the users about
    upcoming backward-incompatibilities that we plan to introduce in
    the next major Automake version (1.13).

  - introduces built-in support for the Objective C++ programming
    language (thanks to Peter Breitenlohner for this).

See below for the detailed list of changes since Automake 1.12, as
summarized by the NEWS file.

Download here:

  ftp://ftp.gnu.org/gnu/automake/automake-1.12.1.tar.gz
  ftp://ftp.gnu.org/gnu/automake/automake-1.12.1.tar.xz

Please report bugs and problems to <address@hidden>, and send
general comments and feedback to <address@hidden>.

Thanks to everyone who has reported problems, contributed patches,
and helped testing Automake!

- -*-*-*-

New in 1.12.1:

* WARNING: Future backward-incompatibilities!

  - Starting from either the next minor version (1.12.2) or the next major
    version (1.13), Automake will start warning if 'configure.in' is used
    instead of 'configure.ac' as the Autoconf input.  Future versions of
    Automake will drop support for 'configure.in' altogether.

  - Autoconf 2.65 or later will be required by the next major Automake
    version (1.13).  Until now, Automake has required Autoconf version
    2.62 or later.

  - Starting from the next major Automake version (1.13), the rules to
    build pdf, ps and dvi output from Texinfo input will use the '--tidy'
    option by default.  Since such an option was introduced in Texinfo
    4.9, this means that Makefiles generated by future Automake versions
    will require at least that version of Texinfo.

  - Starting from the next major Automake version (1.13), the parallel
    testsuite harness (previously only enabled by the 'parallel-tests'
    option) will become the default one; the older serial testsuite
    harness will still be available through the use of the 'serial-tests'
    option.

  - The following long-obsolete m4 macros will be removed in the
    next major Automake version (1.13):

      AM_PROG_CC_STDC:    superseded by AC_PROG_CC since October 2002
      fp_PROG_CC_STDC:    broken alias for AM_PROG_CC_STDC
      fp_WITH_DMALLOC:    old alias for AM_WITH_DMALLOC
      AM_CONFIG_HEADER:   superseded by AC_CONFIG_HEADERS since July 2002
      ud_PATH_LISPDIR:    old alias for AM_PATH_LISPDIR
      jm_MAINTAINER_MODE: old alias for AM_MAINTAINER_MODE
      ud_GNU_GETTEXT:     old alias for AM_GNU_GETTEXT
      gm_PROG_LIBTOOL:    old alias for AC_PROG_LIBTOOL
      fp_C_PROTOTYPES:    old alias for AM_C_PROTOTYPES (which was part
                          of the now-removed automatic de-ANSI-fication
                          support of Automake)

  - All the "old alias" macros in 'm4/obsolete.m4' will be removed in
    the next major Automake version (1.13).

  - Support for the two- and three-arguments invocation forms of the
    AM_INIT_AUTOMAKE macro will be deprecated in the next minor version
    of Automake (1.12.1) and removed in the next major version (1.13).

  - The '--acdir' option of aclocal is deprecated, and will probably
    be removed in the next major Automake release (1.13).  You should
    use the options '--automake-acdir' and '--system-acdir' instead
    (which have been introduced in Automake 1.11.2).

  - The exact order in which the directories in the aclocal macro
    search path are looked up is probably going to be changed in the
    next Automake release (1.13).

* New supported languages:

  - Support for Objective C++ has been added; it should work similarly to
    the support for Objective C.

* Deprecated obsolescent features:

  - Use of the long-deprecated two- and three-arguments invocation forms
    of the AM_INIT_AUTOMAKE macro now elicits a warning in the 'obsolete'
    category.  Starting from the next major Automake release (1.13), such
    usages won't be allowed anymore.

  - Support for the "Cygnus-style" trees (enabled by the 'cygnus' option) is
    now deprecated (its use triggers a warning in the 'obsolete' category).
    It will be removed in the next major Automake release (1.13).

  - The long-obsolete (since 1.10) automake-provided $(mkdir_p) make
    variable, @mkdir_p@ configure-time substitution and AM_PROG_MKDIR
    m4 macro are deprecated, eliciting a warning in the 'obsolete'
    category.  They will be removed in the next major version (1.13).

* Miscellaneous changes:

  - The Automake test cases now require a proper POSIX-conforming shell.
    Older non-POSIX Bourne shells (like Solaris 10 /bin/sh) won't be
    accepted anymore.  In most cases, the user shouldn't have to specify
    such POSIX shell explicitly, since it will be looked up at configure
    time.  Still, when this lookup fails, or when the user wants to
    override its conclusion, the variable 'AM_TEST_RUNNER_SHELL' can be
    used (pointing to the shell that will be used to run the Automake
    test cases).

Bugs fixed in 1.12.1:

* Bugs introduced by 1.12:

  - Several weaknesses in Automake's own build system and test suite
    have been fixed.

* Bugs introduced by 1.11.3:

  - When given non-option arguments, aclocal rejects them, instead of
    silently ignoring them.

* Long-standing bugs:

  - When the 'color-tests' option is in use, forcing of colored testsuite
    output through "AM_COLOR_TESTS=always" works even if the terminal is
    a non-ANSI one, i.e., if the TERM environment variable has a value of
    "dumb".

  - Several inefficiencies and poor performances in the implementation
    of the parallel-tests 'check' and 'recheck' targets have been fixed.

  - The post-processing of output "#line" directives done the ylwrap
    script is more faithful w.r.t. files in a subdirectory; for example,
    if the processed file is "src/grammar.y", ylwrap will correctly
    produce directives like:
        #line 7 "src/grammar.y"
    rather than like
        #line 7 "grammar.y"
    as it did before.

* Bugs with new Perl versions:

  - Aclocal works correctly with perl 5.16.0 (automake bug#11543).

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