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regex: port to mingw's recent addition of undeclared alarm On mingw (at least, when cross-compiling with Fedora 18's mingw32-headers-2.0.999-0.15.trunk.20121110.fc18.noarch build), compilation of test-regex fails: test-regex.c: In function 'main': test-regex.c:42:11: error: 'SIGALRM' undeclared (first use in this function) test-regex.c:42:11: note: each undeclared identifier is reported only once for each function it appears in test-regex.c:43:3: warning: implicit declaration of function 'alarm' It turns out that recent mingw64 added an export of alarm() and SIGALRM, but guarded their declarations behind __USE_MINGW_ALARM (default off, and with alarm() only in the non-standard <io.h>); so the m4 tests were setting HAVE_ALARM to 1 based on link success but then failing to compile. * doc/posix-functions/alarm.texi (alarm): Document that alarm exists but still doesn't work in newer mingw. * m4/frexp.m4 (gl_FUNC_FREXP_WORKS): Check for alarm declaration, not existence. Ensure SIGALRM is not trapped. * m4/mktime.m4 (gl_FUNC_MKTIME): Likewise. * m4/regex.m4 (gl_REGEX): Likewise. * m4/remainderf.m4 (gl_FUNC_REMAINDERF_WORKS): Likewise. * tests/test-regex.c (main): Use correct probe for alarm. Signed-off-by: Eric Blake <eblake@redhat.com>
author Eric Blake <eblake@redhat.com>
date Mon, 11 Mar 2013 14:51:33 -0600
parents e542fd46ad6f
children
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#!/bin/sh
#
# Copyright (C) 2011-2013 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 3 of the License, 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/>.
#

error=0
for module in `./gnulib-tool --list`; do
  module_license=`./gnulib-tool --extract-license $module`
  if test "$module_license" = 'GPLed build tool'; then
    module_license='GPL'
  fi
  for file in `./gnulib-tool --extract-filelist $module | grep '^\(lib\|build-aux\)/'`; do
    if grep 'GNU General Public' $file > /dev/null; then
      if grep 'version 3 or later' $file > /dev/null \
         || grep 'either version 3' $file > /dev/null; then
        file_license='GPL'
      else
        if grep 'version 2 or later' $file > /dev/null \
           || grep 'either version 2' $file > /dev/null; then
          file_license='GPLv2+'
        else
          file_license='GPL??'
        fi
      fi
    else
      if grep 'Lesser General' $file > /dev/null; then
        if grep 'version 3 or later' $file > /dev/null \
           || grep 'either version 3' $file > /dev/null; then
          file_license='LGPL'
        else
          if grep 'version 2 or later' $file > /dev/null \
             || grep 'version 2 of the License, or' $file > /dev/null \
             || grep 'version 2\.1 of the License, or' $file > /dev/null; then
            file_license='LGPLv2+'
          else
            file_license='LGPL??'
          fi
        fi
      else
        file_license='??'
      fi
    fi
    if test "$file_license" != "$module_license"; then
      if test $error = 0; then
        echo "Module License File License   File name"
        echo "============== ============== ====================================="
      fi
      printf '%-14s %-14s %s\n' "$module_license" "$file_license" "$file"
      error=1
    fi
  done
done
exit $error