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

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• Hash : 3562e384
  Author :
  Date : 2017-09-16T13:03:36
  

  Prefer https: URLs
  
  In Gnulib, Emacs, etc. we are changing ftp: and http: URLs to use
  https:, to discourage man-in-the-middle attacks when downloading
  software. The attached patch propagates these changes upstream to
  Automake.  This patch does not affect files that Automake is
  downstream of, which I'll patch separately.
  
  Althouth the resources are not secret, plain HTTP is vulnerable to
  malicious routers that tamper with responses from GNU servers,
  and this sort of thing is all too common when people in some other
  countries browse US-based websites. See, for example:
  
  Aceto G, Botta A, Pescapé A, Awan MF, Ahmad T, Qaisar
  S. Analyzing internet censorship in Pakistan. RTSI
  2016. https://dx.doi.org/10.1109/RTSI.2016.7740626
  
  HTTPS is not a complete solution here, but it can be a significant
  help. The GNU project regularly serves up code to users, so we should
  take some care here.
  

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• t/aclocal-no-force.sh

• #! /bin/sh
  # Copyright (C) 2003-2017 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 <https://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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