kc3-lang/automake/t/ccnoco-lt.sh

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• Hash : 9877109c
  Author :
  Date : 2013-05-14T16:08:32
  

  compile: rewrite AC_PROG_CC with AM_PROG_CC_C_O contents
  
  This is a much simpler rewrite than the one we attempted in the past,
  and that was later removed by commit 'v1.13.1d-137-g32eb770' of
  2013-05-11 (compile: avoid AC_PROG_CC messy rewrite).
  
  Not only this change simplifies the code a little, but has the welcome
  collateral effect of making automatic dependency tracking work better
  with compilers that doesn't grasp the '-c' and '-o' options together.
  Issues in that setup have been caught by several failures in the target
  'check-no-cc-c-o'.
  
  Unfortunately, this change has less welcome collateral effects:
  
    1. AM_PROG_AR must now be called *after* AC_PROG_CC;
  
    2. Autoconf emits extra warnings when used with Automake-generated
       aclocal.m4.
  
  These are unacceptable regressions for a release, but since we are
  going to fix them soon enough in a follow-up patch (surely to be
  applied before Automake 1.14 is released) we don't worry too much.
  
  * m4/init.m4: Redefine AC_PROG_CC early, to automatically invoke
  AM_PROG_CC_C_O as well.  Accordingly, drop now-unneeded "automagical"
  AM_PROG_CC_C_O expansion at later time (which took place thanks to
  a AC_CONFIG_COMMANDS_PRE call).
  * m4/minuso.m4 (AM_PROG_CC_C_O): Ensure the expansion of the body
  of this macro takes place with C as "current Autoconf language" (use
  AC_LANG_PUSH/AC_LANG_POP).
  * m4/ar-lib.m4 (AM_PROG_AR): Likewise.  Also, require this macro to
  be expanded *after* AC_PROG_CC (so that any rewrite of $CC, if required,
  has already taken place).
  * t/add-missing.tap: Adjust to avoid spurious failures.
  * t/aclocal-deps.sh: Likewise, by having AM_PROG_AR called *after*
  AC_PROG_CC.
  * t/subobj-clean-lt-pr10697.sh: Likewise.
  * t/alloca.sh: Likewise.
  * t/condlib.sh: Likewise.
  * t/discover.sh: Likewise.
  * t/objc-megademo.sh: Likewise.
  * t/ccnoco.sh: Extend a little.
  * t/ccnoco-deps.sh: New test.
  * t/ccnoco-lib.sh: Likewise.
  * t/ccnoco-lt.sh: Likewise.
  * t/list-of-tests.mk: Add them.
  
  Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>
  

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• t/ccnoco-lt.sh

• #! /bin/sh
  # Copyright (C) 2001-2013 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/>.
  
  # Test to make sure we can compile libtool libraries when the compiler
  # doesn't understand '-c -o'.
  
  required='gcc libtoolize' # For cc-no-c-o.
  . test-init.sh
  
  cat >> configure.ac << 'END'
  AC_PROG_CC
  AM_PROG_AR
  LT_INIT
  $CC --version
  $CC -v
  AC_OUTPUT
  END
  
  cat > Makefile.am << 'END'
  lib_LTLIBRARIES = libwish.la
  END
  
  cat > libwish.c << 'END'
  int wish_granted (void)
  {
     return 0;
  }
  END
  
  # Make sure the compiler doesn't understand '-c -o'.
  CC=$am_testaux_builddir/cc-no-c-o; export CC
  
  libtoolize --verbose --install
  $ACLOCAL
  $AUTOCONF
  $AUTOMAKE --copy --add-missing
  
  for vpath in : false; do
    if $vpath; then
      srcdir=..
      mkdir build
      cd build
    else
      srcdir=.
    fi
    $srcdir/configure >stdout || { cat stdout; exit 1; }
    cat stdout
    $EGREP 'understands? -c and -o together.* no$' stdout
    # No repeated checks please.
    test $(grep ".*-c['\" ].*-o['\" ]" stdout \
            | $FGREP -v ' -c -o file.o' | wc -l) -eq 1
    # Once we have rewritten $CC to use our 'compile' wrapper script,
    # libtool should pick it up correctly, and not mess with the
    # redefinition.
    grep '^checking if .*/compile .*supports -c -o file\.o\.\.\. yes' stdout
    # And of course, we should be able to build our package.
    $MAKE
    cd $srcdir
  done
  
  $MAKE distcheck
  
  :
  

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