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    Bump to autoconf 2.69 and automake 1.15.1 · d0ac1c44
    Simon Marchi authored
    When trying to run the update-gnulib.sh script in gdb, I get this:
    
    Error: Wrong automake version (Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\${ <-- HERE ([^      =:+{}]+)}/ at /opt/automake/1.11.1/bin/automake line 4113.), we need 1.11.1.
    Aborting.
    
    Apparently, it's an issue with a regex in automake that triggers a
    warning starting with Perl 5.22.  It has been fixed in automake 1.15.1.
    So I think it's a good excuse to bump the versions of autoconf and
    automake used in the gnulib import.  And to avoid requiring multiple
    builds of autoconf/automake, it was suggested that we bump the required
    version of those tools for all binutils-gdb.
    
    For autoconf, the 2.69 version is universally available, so it's an easy
    choice.  For automake, different distros and distro versions have
    different automake versions.  But 1.15.1 seems to be the most readily
    available as a package.  In any case, it's easy to build it from source.
    
    I removed the version checks from AUTOMAKE_OPTIONS and AC_PREREQ,
    because I don't think they are useful in our case.  They only specify a
    lower bound for the acceptable version of automake/autoconf.  That's
    useful if you let the user choose the version of the tool they want to
    use, but want to set a minimum version (because you use a feature that
    was introduced in that version).  In our case, we force people to use a
    specific version anyway.  For the autoconf version, we have the check in
    config/override.m4 that enforces the version we want.  It will be one
    less thing to update next time we change autotools version.
    
    I hit a few categories of problems that required some changes.  They are
    described below along with the chosen solutions.
    
    Problem 1:
    
      configure.ac:17: warning: AM_INIT_AUTOMAKE: two- and three-arguments forms are deprecated.  For more info, see:
      configure.ac:17: http://www.gnu.org/software/automake/manual/automake.html#Modernize-AM_005fINIT_005fAUTOMAKE-invocation
    
    Solution 1:
    
      Adjust the code based on the example at that URL.
    
    Problem 2 (in zlib/):
    
      Makefile.am: error: required file './INSTALL' not found
      Makefile.am:   'automake --add-missing' can install 'INSTALL'
      Makefile.am: error: required file './NEWS' not found
      Makefile.am: error: required file './AUTHORS' not found
      Makefile.am: error: required file './COPYING' not found
      Makefile.am:   'automake --add-missing' can install 'COPYING'
    
    Solution 2:
    
      Add the foreign option to AUTOMAKE_OPTIONS.
    
    Problem 3:
    
      doc/Makefile.am:20: error: support for Cygnus-style trees has been removed
    
    Solution 3:
    
      Remove the cygnus options.
    
    Problem 4:
    
      Makefile.am:656: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')
    
    Solution 4:
    
      Rename "INCLUDES = " to "AM_CPPFLAGS += " (because AM_CPPFLAGS is
      already defined earlier).
    
    Problem 5:
    
      doc/Makefile.am:71: warning: suffix '.texinfo' for Texinfo files is discouraged; use '.texi' instead
      doc/Makefile.am: warning: Oops!
      doc/Makefile.am:     It appears this file (or files included by it) are triggering
      doc/Makefile.am:     an undocumented, soon-to-be-removed automake hack.
      doc/Makefile.am:     Future automake versions will no longer place in the builddir
      doc/Makefile.am:     (rather than in the srcdir) the generated '.info' files that
      doc/Makefile.am:     appear to be cleaned, by e.g. being listed in CLEANFILES or
      doc/Makefile.am:     DISTCLEANFILES.
      doc/Makefile.am:     If you want your '.info' files to be placed in the builddir
      doc/Makefile.am:     rather than in the srcdir, you have to use the shiny new
      doc/Makefile.am:     'info-in-builddir' automake option.
    
    Solution 5:
    
      Rename .texinfo files to .texi.
    
    Problem 6:
    
      doc/Makefile.am: warning: Oops!
      doc/Makefile.am:     It appears this file (or files included by it) are triggering
      doc/Makefile.am:     an undocumented, soon-to-be-removed automake hack.
      doc/Makefile.am:     Future automake versions will no longer place in the builddir
      doc/Makefile.am:     (rather than in the srcdir) the generated '.info' files that
      doc/Makefile.am:     appear to be cleaned, by e.g. being listed in CLEANFILES or
      doc/Makefile.am:     DISTCLEANFILES.
      doc/Makefile.am:     If you want your '.info' files to be placed in the builddir
      doc/Makefile.am:     rather than in the srcdir, you have to use the shiny new
      doc/Makefile.am:     'info-in-builddir' automake option.
    
    Solution 6:
    
      Remove the hack at the bottom of doc/Makefile.am and use
      the info-in-builddir automake option.
    
    Problem 7:
    
      doc/Makefile.am:35: error: required file '../texinfo.tex' not found
      doc/Makefile.am:35:   'automake --add-missing' can install 'texinfo.tex'
    
    Solution 7:
    
      Use the no-texinfo.tex automake option.  We also have one in
      texinfo/texinfo.tex, not sure if we should point to that, or move it
      (or a newer version of it added with automake --add-missing) to
      top-level.
    
    Problem 8:
    
      Makefile.am:131: warning: source file 'config/tc-aarch64.c' is in a subdirectory,
      Makefile.am:131: but option 'subdir-objects' is disabled
      automake: warning: possible forward-incompatibility.
      automake: At least a source file is in a subdirectory, but the 'subdir-objects'
      automake: automake option hasn't been enabled.  For now, the corresponding output
      automake: object file(s) will be placed in the top-level directory.  However,
      automake: this behaviour will change in future Automake versions: they will
      automake: unconditionally cause object files to be placed in the same subdirectory
      automake: of the corresponding sources.
      automake: You are advised to start using 'subdir-objects' option throughout your
      automake: project, to avoid future incompatibilities.
    
    Solution 8:
    
      Use subdir-objects, that means adjusting references to some .o that will now
      be in config/.
    
    Problem 9:
    
      configure.ac:375: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body
      ../../lib/autoconf/lang.m4:193: AC_LANG_CONFTEST is expanded from...
      ../../lib/autoconf/general.m4:2601: _AC_COMPILE_IFELSE is expanded from...
      ../../lib/autoconf/general.m4:2617: AC_COMPILE_IFELSE is expanded from...
      ../../lib/m4sugar/m4sh.m4:639: AS_IF is expanded from...
      ../../lib/autoconf/general.m4:2042: AC_CACHE_VAL is expanded from...
      ../../lib/autoconf/general.m4:2063: AC_CACHE_CHECK is expanded from...
      configure.ac:375: the top level
    
    Solution 9:
    
      Use AC_LANG_SOURCE, or use proper quoting.
    
    Problem 10 (in intl/):
    
      configure.ac:7: warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
      /usr/share/aclocal/threadlib.m4:36: gl_THREADLIB_EARLY_BODY is expanded from...
      /usr/share/aclocal/threadlib.m4:29: gl_THREADLIB_EARLY is expanded from...
      /usr/share/aclocal/threadlib.m4:318: gl_THREADLIB is expanded from...
      /usr/share/aclocal/lock.m4:9: gl_LOCK is expanded from...
      /usr/share/aclocal/intl.m4:211: gt_INTL_SUBDIR_CORE is expanded from...
      /usr/share/aclocal/intl.m4:25: AM_INTL_SUBDIR is expanded from...
      /usr/share/aclocal/gettext.m4:57: AM_GNU_GETTEXT is expanded from...
      configure.ac:7: the top level
    
    Solution 10:
    
      Add AC_USE_SYSTEM_EXTENSIONS in configure.ac.
    
    ChangeLog:
    
    	* libtool.m4: Use AC_LANG_SOURCE.
    	* configure.ac: Remove AC_PREREQ, use AC_LANG_SOURCE.
    	* README-maintainer-mode: Update version requirements.
    	* ar-lib: New file.
    	* test-driver: New file.
    	* configure: Re-generate.
    
    bfd/ChangeLog:
    
    	* Makefile.am (AUTOMAKE_OPTIONS): Remove 1.11.
    	(INCLUDES): Rename to ...
    	(AM_CPPFLAGS): ... this.
    	* configure.ac: Remove AC_PREREQ.
    	* doc/Makefile.am (AUTOMAKE_OPTIONS): Remove 1.9, cygnus, add
    	info-in-builddir no-texinfo.tex.
    	(info_TEXINFOS): Rename bfd.texinfo to bfd.texi.
    	* doc/bfd.texinfo: Rename to ...
    	* doc/bfd.texi: ... this.
    	* Makefile.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* config.in: Re-generate.
    	* configure: Re-generate.
    	* doc/Makefile.in: Re-generate.
    
    binutils/ChangeLog:
    
    	* configure.ac: Remove AC_PREREQ.
    	* doc/Makefile.am (AUTOMAKE_OPTIONS): Remove cygnus, add
    	info-in-builddir no-texinfo.tex.
    	* Makefile.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* config.in: Re-generate.
    	* configure: Re-generate.
    	* doc/Makefile.in: Re-generate.
    
    config/ChangeLog:
    
    	* override.m4 (_GCC_AUTOCONF_VERSION): Bump from 2.64 to 2.69.
    
    etc/ChangeLog:
    
    	* configure.in: Remove AC_PREREQ.
    	* configure: Re-generate.
    
    gas/ChangeLog:
    
    	* Makefile.am (AUTOMAKE_OPTIONS): Remove 1.11, add subdir-objects.
    	(TARG_CPU_O, OBJ_FORMAT_O, ATOF_TARG_O): Add config/ prefix.
    	* configure.ac (TARG_CPU_O, OBJ_FORMAT_O, ATOF_TARG_O, emfiles,
    	extra_objects): Add config/ prefix.
    	* doc/as.texinfo: Rename to...
    	* doc/as.texi: ... this.
    	* doc/Makefile.am: Rename as.texinfo to as.texi throughout.
    	Remove DISTCLEANFILES hack.
    	(AUTOMAKE_OPTIONS): Remove 1.8, cygnus, add no-texinfo.tex and
    	info-in-builddir.
    	* Makefile.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* config.in: Re-generate.
    	* configure: Re-generate.
    	* doc/Makefile.in: Re-generate.
    
    gdb/ChangeLog:
    
    	* common/common-defs.h (PACKAGE_NAME, PACKAGE_VERSION,
    	PACKAGE_STRING, PACKAGE_TARNAME): Undefine.
    	* configure.ac: Remove AC_PREREQ, add missing quoting.
    	* gnulib/configure.ac: Modernize usage of
    	AC_INIT/AM_INIT_AUTOMAKE.  Remove AC_PREREQ.
    	* gnulib/update-gnulib.sh (AUTOCONF_VERSION): Bump to 2.69.
    	(AUTOMAKE_VERSION): Bump to 1.15.1.
    	* configure: Re-generate.
    	* config.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* gnulib/aclocal.m4: Re-generate.
    	* gnulib/config.in: Re-generate.
    	* gnulib/configure: Re-generate.
    	* gnulib/import/Makefile.in: Re-generate.
    
    gdb/gdbserver/ChangeLog:
    
    	* configure.ac: Remove AC_PREREQ, add missing quoting.
    	* configure: Re-generate.
    	* config.in: Re-generate.
    	* aclocal.m4: Re-generate.
    
    gdb/testsuite/ChangeLog:
    
    	* configure.ac: Remove AC_PREREQ.
    	* configure: Re-generate.
    
    gold/ChangeLog:
    
    	* configure.ac: Remove AC_PREREQ, add missing quoting and usage
    	of AC_LANG_SOURCE.
    	* Makefile.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* configure: Re-generate.
    	* testsuite/Makefile.in: Re-generate.
    
    gprof/ChangeLog:
    
    	* configure.ac: Remove AC_PREREQ.
    	* Makefile.am: Remove DISTCLEANFILES hack.
    	(AUTOMAKE_OPTIONS): Remove 1.11, add info-in-builddir.
    	* Makefile.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* configure: Re-generate.
    	* gconfig.in: Re-generate.
    
    intl/ChangeLog:
    
    	* configure.ac: Add AC_USE_SYSTEM_EXTENSIONS, remove AC_PREREQ.
    	* configure: Re-generate.
    	* config.h.in: Re-generate.
    	* aclocal.m4: Re-generate.
    
    ld/ChangeLog:
    
    	* configure.ac: Remove AC_PREREQ.
    	* Makefile.am: Remove DISTCLEANFILES hack, rename ld.texinfo to
    	ld.texi, ldint.texinfo to ldint.texi throughout.
    	(AUTOMAKE_OPTIONS): Add info-in-builddir.
    	* README: Rename ld.texinfo to ld.texi, ldint.texinfo to
    	ldint.texi throughout.
    	* gen-doc.texi: Likewise.
    	* h8-doc.texi: Likewise.
    	* ld.texinfo: Rename to ...
    	* ld.texi: ... this.
    	* ldint.texinfo: Rename to ...
    	* ldint.texi: ... this.
    	* Makefile.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* config.in: Re-generate.
    	* configure: Re-generate.
    
    libdecnumber/ChangeLog:
    
    	* configure.ac: Remove AC_PREREQ.
    	* configure: Re-generate.
    	* aclocal.m4.
    
    libiberty/ChangeLog:
    
    	* configure.ac: Remove AC_PREREQ.
    	* configure: Re-generate.
    	* config.in: Re-generate.
    
    opcodes/ChangeLog:
    
    	* Makefile.am (AUTOMAKE_OPTIONS): Remove 1.11.
    	* configure.ac: Remove AC_PREREQ.
    	* Makefile.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* configure: Re-generate.
    
    readline/ChangeLog.gdb:
    
    	* configure: Re-generate.
    	* examples/rlfe/configure: Re-generate.
    
    sim/ChangeLog:
    
    	* All configure.ac: Remove AC_PREREQ.
    	* All configure: Re-generate.
    
    zlib/ChangeLog.bin-gdb:
    
    	* configure.ac: Modernize AC_INIT call, remove AC_PREREQ.
    	* Makefile.am (AUTOMAKE_OPTIONS): Remove 1.8, cygnus, add
    	foreign.
    	* Makefile.in: Re-generate.
    	* aclocal.m4: Re-generate.
    	* configure: Re-generate.
    d0ac1c44