kc3-lang/automake/t/remake9d.sh

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• Hash : c2a52bf0
  Author :
  Date : 2012-06-24T10:36:15
  

  tests: simpler workaround for shells losing the exit status in exit trap
  
  Now that we can assume our tests are run by a decent POSIX shell, we
  can simplify our workaround aimed at having the exit status propagated
  correctly to the code in the exit trap.  Unfortunately, we cannot
  dispense with such a workaround altogether, because it's still required
  by some shells we need to support (at least Solaris 10 /bin/ksh and
  /usr/xpg4/bin/sh).
  
  For more information about the need of that workaround, see the entry
  about 'trap' in the section "Limitations of Shell Builtins" in the
  Autoconf manual:
  <http://www.gnu.org/software/autoconf/manual/autoconf.html#trap>
  
  The new workaround has been tested successfully with the following
  shells:
  
    - Bash 4.1
    - Bash 3.2
    - Bash 3.0
    - Bash 2.05b
    - dash 0.5.5.1
    - dash 0.5.2
    - AT&T Ksh 93u (from official Debian package)
    - MirBSD Korn Shell 40.2 (from official Debian package)
    - Solaris 9, 10 and 11 /bin/ksh
    - Solaris 9, 10 and 11 /usr/xpg4/bin/sh
    - NetBSD 5.1 /bin/sh
    - NetBSD 5.1 /bin/ksh
  
  * t/ax/test-init.sh (Exit): Rename ...
  (_am_exit): ... like this.
  (exit): New alias for '_am_exit'.  We cannot simply redefine 'exit'
  as a shell function, because some shells (dash 0.5.5.1, Solaris 10
  /bin/ksh and /usr/xpg4/bin/sh) do not allow it.
  (_am_exit, trap): Add extra escaping for 'exit' calls, to ensure we
  really invoke the 'exit' builtin and not our alias with the same
  name.
  * configure.ac: Check that the shell selected to run our testsuite
  supports aliases named like shell builtins.
  * t/REAMDE: Adjust.
  * All tests: Adjust, by simply using 'exit' instead of 'Exit'.
  * t/self-check-explicit-skips.sh: Adjust: the first usage of 'exit'
  after it has been redefined as an alias must be on a new line w.r.t.
  that where the alias is defined, in order for the redefinition to be
  honored.
  * syntax-checks.mk (sc_tests_Exit_not_exit): Delete.
  (sc_tests_exit_not_Exit): New.
  (syntax_check_rules): Adjust.
  (sc_tests_automake_fails): Simplify the recipe a little.
  * Several tests: Remove now useless spurious quoting once required
  to placate the 'sc_tests_Exit_not_exit' maintainer check.
  * gen-testsuite-part: Likewise.  Also, avoid uses of 'Exit' in the
  generated scripts.
  
  Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
  

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• t/remake9d.sh

• #! /bin/sh
  # Copyright (C) 2010-2012 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/>.
  
  # Test remake rules when aclocal.m4 or its prerequisites change.
  # Keep in sync with the other sister tests 'remake9*.test'.
  
  . ./defs || exit 1
  
  magic1=::MagicStringOne::
  magic2=__MagicStringTwo__
  
  if using_gmake; then
    remake_() { $MAKE nil; }
  else
    remake_() { $MAKE Makefile && $MAKE foo.sh; }
  fi
  
  cat >> configure.ac <<END
  FINGERPRINT='my_fingerprint'
  AC_SUBST([FINGERPRINT])
  AC_CONFIG_FILES([foo.sh:foo.in], [chmod a+x foo.sh])
  AC_OUTPUT
  END
  
  cat > Makefile.am <<'END'
  nil:
  .PHONY: nil
  
  # A non-autogenerated aclocal.m4 can be extended by hand.
  $(srcdir)/aclocal.m4: $(srcdir)/tweak-aclocal-m4
  	$(SHELL) $(srcdir)/tweak-aclocal-m4 <$@ >$@-t
  	mv -f $@-t $@
  	touch $@
  EXTRA_DIST = $(srcdir)/tweak-aclocal-m4
  
  # Used by "make distcheck" later.
  check-local:
  	test x'$(FINGERPRINT)' = x'DummyValue'
  	test x"`./foo.sh`" = x"DummyValue"
  END
  
  cat > foo.in <<END
  #!/bin/sh
  echo '@FINGERPRINT@'
  END
  
  echo cat > tweak-aclocal-m4 # It is a no-op by default.
  
  $ACLOCAL
  # Cheatingly mark aclocal.m4 as non auto-generated.
  sed '/^ *#.*generated automatically/d' aclocal.m4 > t
  mv -f t aclocal.m4
  $AUTOCONF
  $AUTOMAKE
  
  for vpath in : false; do
  
    if $vpath; then
      mkdir build
      cd build
      srcdir=..
    else
      srcdir=.
    fi
  
    $srcdir/configure
    $MAKE # Should be a no-op.
  
    $sleep
    echo "AC_DEFUN([my_fingerprint], [$magic1])dnl %%%" >> $srcdir/aclocal.m4
    remake_
    $FGREP FINGERPRINT Makefile # For debugging.
    $FGREP $magic1 Makefile
    test x"$(./foo.sh)" = x"$magic1"
  
    $sleep
    echo "sed 's/.*dnl *%%%.*/AC_DEFUN([my_fingerprint], [$magic2])/'" \
      > $srcdir/tweak-aclocal-m4
    remake_
    $FGREP FINGERPRINT Makefile # For debugging.
    $FGREP $magic1 Makefile && exit 1
    $FGREP $magic2 Makefile
    test x"$(./foo.sh)" = x"$magic2"
  
    $sleep
    echo cat > $srcdir/tweak-aclocal-m4 # Make it a no-op again.
    echo 'AC_DEFUN([my_fingerprint], [DummyValue])' >> $srcdir/aclocal.m4
    using_gmake || remake_
    $MAKE distcheck
    $FGREP $magic1 Makefile && exit 1 # Sanity check.
    $FGREP $magic2 Makefile && exit 1 # Likewise.
  
    $MAKE distclean
  
    cd $srcdir
  
  done
  
  :
  

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