kc3-lang/automake/t/aclocal-no-force.sh

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• Hash : 7df8b28c
  Author :
  Date : 2012-12-31T18:18:37
  

  maint: update copyright year for 2013 (in branch maint)
  
  Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
  

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• t/aclocal-no-force.sh

• #! /bin/sh
  # Copyright (C) 2003-2013 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/>.
  
  # Make sure aclocal does not overwrite aclocal.m4 needlessly.
  # Also make sure automake --no-force does not overwrite Makefile.in needlessly.
  
  . test-init.sh
  
  cat >> configure.ac << 'END'
  SOME_DEFS
  AC_CONFIG_FILES([sub/Makefile])
  END
  
  mkdir sub
  : > sub/Makefile.am
  
  cat >> Makefile.am << 'END'
  SUBDIRS = sub
  include fragment.inc
  END
  
  : > fragment.inc
  
  mkdir m4
  echo 'AC_DEFUN([SOME_DEFS], [])' > m4/somedefs.m4
  
  # Automake will take aclocal.m4 to be newer if it has the same timestamp
  # as Makefile.in.  Avoid the confusing by sleeping.
  AUTOMAKE_after_aclocal ()
  {
    $sleep
    $AUTOMAKE --no-force
  }
  
  # aclocal will rewrite aclocal.m4 unless the input files are all older than the
  # existing aclocal.m4 -- sleep to ensure somedefs.m4 has an older timestamp
  # than the aclocal.m4 that the next aclocal call will generate.
  $sleep
  
  $ACLOCAL -I m4
  AUTOMAKE_after_aclocal
  
  touch foo
  $sleep
  $ACLOCAL -I m4
  AUTOMAKE_after_aclocal
  # aclocal.m4 and Makefile.in should not have been updated, so 'foo'
  # should be younger
  is_newest foo aclocal.m4 Makefile.in sub/Makefile.in
  
  $sleep
  $ACLOCAL -I m4 --force
  is_newest aclocal.m4 foo
  # We still use --no-force for automake, but since aclocal.m4 has
  # changed all Makefile.ins should be updated.
  AUTOMAKE_after_aclocal
  is_newest Makefile.in aclocal.m4 foo
  is_newest sub/Makefile.in aclocal.m4 foo
  
  $sleep
  touch m4/somedefs.m4
  $sleep
  $ACLOCAL -I m4
  AUTOMAKE_after_aclocal
  # aclocal.m4 should have been updated, although its contents haven't
  # changed.
  is_newest aclocal.m4 m4/somedefs.m4
  is_newest Makefile.in m4/somedefs.m4
  is_newest sub/Makefile.in m4/somedefs.m4
  
  $sleep
  touch fragment.inc
  $sleep
  $ACLOCAL -I m4
  AUTOMAKE_after_aclocal
  # Only ./Makefile.in should change.
  is_newest Makefile.in fragment.inc
  is_newest fragment.inc aclocal.m4
  is_newest fragment.inc sub/Makefile.in
  
  grep README Makefile.in && exit 1
  
  $sleep
  : > README
  $sleep
  $AUTOMAKE --no-force
  # Even if no dependency change, the content changed.
  is_newest Makefile.in README
  is_newest README sub/Makefile.in
  
  grep README Makefile.in
  
  : > sub/Makefile.in
  $sleep
  touch foo
  $sleep
  $ACLOCAL -I m4
  $AUTOMAKE --no-force
  # Only sub/Makefile.in should change.
  is_newest foo aclocal.m4
  is_newest foo Makefile.in
  is_newest sub/Makefile.in foo
  
  :
  

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