kc3-lang/automake/t/lisp8.sh

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• Hash : 45c1fcd9
  Author :
  Date : 2012-05-05T19:22:40
  

  tests: use append mode to capture parallel make output
  
  This should fix the spurious failure reported in automake bug#11413.
  
  This is due to the fact that the redirected output of parallel make
  can racily loose lines.  For example, if GNU make (3.82) is run on
  a Makefile like this:
  
    all = 0 1 2 3 4 5 6 7 8 9
    default: $(all)
    $(all):
          @sleep 0.$$(($RANDOM % 10)); echo $@
  
  and has its standard output redirected in overwrite-mode to a regular
  file, it looses a line of that output every 15 runs or so on a Fedora
  17 system with 64 ppc64 cores and Linux 3.3.1.  Redirection in append
  mode does not suffer of this problem.
  
  See also similar commit 'Release-1-10-280-g6426999' of 2009-03-10,
  "Use append mode to capture parallel test output", which tackled a
  similar problem for 't/parallel-tests3.sh' and 't/lisp8.sh'.
  
  * t/tap-more.sh: Use append mode for output from "make -j", to avoid
  dropped lines.
  * t/parallel-tests3.sh, t/lisp8.sh: Enhance comments.
  
  Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
  

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• t/lisp8.sh

• #! /bin/sh
  # Copyright (C) 2005-2012 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 the recover rule of lisp_LISP with parallel make.
  
  required='GNUmake emacs'
  . ./defs || Exit 1
  
  cat > Makefile.am << 'EOF'
  dist_lisp_LISP = am-one.el am-two.el am-three.el
  EOF
  
  cat >> configure.ac << 'EOF'
  AM_PATH_LISPDIR
  AC_OUTPUT
  EOF
  
  echo "(require 'am-two)" > am-one.el
  echo "(require 'am-three) (provide 'am-two)" > am-two.el
  echo "(provide 'am-three)" > am-three.el
  
  $ACLOCAL
  $AUTOCONF
  $AUTOMAKE --add-missing
  ./configure
  
  # Use append mode here to avoid dropping output.  See automake bug#11413.
  : >stdout
  $MAKE -j >>stdout || { cat stdout; Exit 1; }
  
  cat stdout
  test 1 -eq `grep 'Warnings can be ignored' stdout | wc -l`
  
  test -f am-one.elc
  test -f am-two.elc
  test -f am-three.elc
  test -f elc-stamp
  
  rm -f am-*.elc
  
  # Use append mode here to avoid dropping output.  See automake bug#11413.
  : >stdout
  $MAKE -j >>stdout || { cat stdout; Exit 1; }
  
  cat stdout
  test 1 -eq `grep 'Warnings can be ignored' stdout | wc -l`
  test -f am-one.elc
  test -f am-two.elc
  test -f am-three.elc
  test -f elc-stamp
  
  :
  

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