kc3-lang/automake/t/aclocal-path-precedence.sh

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• Hash : 7326c52e
  Author :
  Date : 2012-11-24T20:32:48
  

  aclocal: allow third-party macros take precedence over automake ones
  
  It makes sense to allow "local system-wide" m4 macros take precedence
  over built-in macros (defined in the aclocal versioned m4 directory
  "${prefix}/share/aclocal-${APIVERSION}"), the same way we allow
  "environment-level" m4 macros (through the ACLOCAL_PATH environment
  variable ) take precedence over system-wide third-party macros.
  
  An example: after this change, a definition of AM_PROG_VALAC placed
  in file (say) '/usr/local/share/aclocal/my-vala.m4' should take
  precedence over the same-named automake-provided macro defined in
  file '/usr/local/share/aclocal-1.14/vala.m4'.
  
  Even more importantly, after this change, m4 macros accessible
  through $ACLOCAL_PATH entries will take precedence over m4 macros
  defined in the aclocal versioned m4 directory; it was quite counter
  intuitive that it was not the case before.
  
  * aclocal.in (scan_m4_files): Search files in @system_includes before
  files in @automake_includes.
  * t/aclocal-acdir.sh: Adjust.
  * t/aclocal-path-precedence.sh: Likewise.
  * t/dirlist.sh: Likewise.
  * doc/automake.texi: Adjust.
  * NEWS: Update.
  
  Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
  

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• t/aclocal-path-precedence.sh

• #! /bin/sh
  # Copyright (C) 2011-2012 Free Software Foundation, Inc.
  #
  # This program is free software; you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation; either version 2, or (at your option)
  # any later version.
  #
  # This program is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  
  # Check precedence rules for ACLOCAL_PATH.
  
  am_create_testdir=empty
  . test-init.sh
  
  cat > configure.ac << 'END'
  AC_INIT([foo], [1.0])
  AM_INIT_AUTOMAKE
  FOO_MACRO
  BAR_MACRO
  AC_PROG_LIBTOOL
  AM_GNU_GETTEXT
  END
  
  mkdir mdir1 mdir2 mdir3 sysdir extradir
  
  cat > mdir1/foo1.m4 << 'END'
  AC_DEFUN([FOO_MACRO], [::pass-foo::])
  END
  
  cat > mdir2/foo2.m4 << 'END'
  AC_DEFUN([FOO_MACRO], [::fail-foo::])
  END
  
  cat > mdir1/baz.m4 << 'END'
  AC_DEFUN([BAR_MACRO], [::fail-bar::])
  END
  
  cat > mdir3/bar.m4 << 'END'
  AC_DEFUN([BAR_MACRO], [::pass-bar::])
  END
  
  cat > mdir2/quux-a.m4 << 'END'
  AC_DEFUN([AM_INIT_AUTOMAKE], [::pass-am-init::])
  END
  
  cat > mdir2/quux-b.m4 << 'END'
  AC_DEFUN([AC_PROG_LIBTOOL], [::pass-libtool::])
  END
  
  cat > mdir2/quux-c.m4 << 'END'
  AC_DEFUN([AM_GNU_GETTEXT], [::pass-gettext::])
  END
  
  cat > sysdir/libtool.m4 << 'END'
  AC_DEFUN([AC_PROG_LIBTOOL], [::fail-libtool::])
  END
  
  cat > extradir/gettext.m4 << 'END'
  AC_DEFUN([AM_GNU_GETTEXT], [::fail-gettext::])
  END
  
  echo ./extradir > sysdir/dirlist
  
  ACLOCAL_PATH=mdir1:mdir2 $ACLOCAL -I mdir3 --system-acdir sysdir
  $AUTOCONF
  
  $FGREP '::' configure # For debugging.
  
  # Directories coming first in ACLOCAL_PATH should take precedence
  # over those coming later.
  $FGREP '::pass-foo::' configure
  
  # Directories from '-I' options should take precedence over directories
  # in ACLOCAL_PATH.
  $FGREP '::pass-bar::' configure
  
  # Directories in ACLOCAL_PATH should take precedence over system acdir
  # (typically '${prefix}/share/aclocal'), and any directory added through
  # the 'dirlist' special file.
  $FGREP '::pass-gettext::' configure
  $FGREP '::pass-libtool::' configure
  
  # Directories in ACLOCAL_PATH shoul take precedence over the internal
  # automake acdir (typically '${prefix}/share/aclocal-${APIVERSION}').
  $FGREP '::pass-am-init::' configure
  
  # A final sanity check.
  $FGREP '::fail' configure && exit 1
  
  :
  

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