t/warnopts.sh

   1 #! /bin/sh
   2 # Copyright (C) 2002-2017 Free Software Foundation, Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2, or (at your option)
   7 # any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  16
  17 # Make sure that we can enable or disable warnings on a per-file basis.
  18
  19 . test-init.sh
  20
  21 cat >>configure.ac <<END
  22 AC_CONFIG_FILES([sub/Makefile])
  23 AC_OUTPUT
  24 END
  25
  26 mkdir sub
  27
  28 # These two Makefile contain the same errors, but have different
  29 # warnings disabled.
  30
  31 cat >Makefile.am <<END
  32 AUTOMAKE_OPTIONS = -Wno-obsolete
  33 INCLUDES = -Ifoo
  34 foo_SOURCES = unused
  35 SUBDIRS = sub
  36 END
  37
  38 cat >sub/Makefile.am <<END
  39 AUTOMAKE_OPTIONS = -Wno-syntax
  40 INCLUDES = -Ifoo
  41 foo_SOURCES = unused
  42 END
  43
  44 $ACLOCAL
  45 AUTOMAKE_fails
  46 # The expected diagnostic is
  47 #   Makefile.am:3: warning: variable 'foo_SOURCES' is defined but no program or
  48 #                           library has 'foo' as canonical name (possible typo)
  49 #   sub/Makefile.am:2: warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS'
  50 grep '^Makefile.am:.*foo_SOURCES' stderr
  51 grep '^sub/Makefile.am:.*INCLUDES' stderr
  52 grep '^sub/Makefile.am:.*foo_SOURCES' stderr && exit 1
  53 grep '^Makefile.am:.*INCLUDES' stderr && exit 1
  54 # Only three lines of warnings.
  55 test $(grep -v 'warnings are treated as errors' stderr | wc -l) -eq 3
  56
  57 # On fast machines the autom4te.cache created during the above run of
  58 # $AUTOMAKE is likely to have the same time stamp as the configure.ac
  59 # created below; thus causing traces for the old configure.ac to be
  60 # used.  We could do '$sleep', but it's faster to erase the
  61 # directory.  (Erase autom4te*.cache, not autom4te.cache, because some
  62 # bogus installations of Autoconf use a versioned cache).
  63 rm -rf autom4te*.cache
  64
  65 # If we add a global -Wnone, all warnings should disappear.
  66 cat >configure.ac <<END
  67 AC_INIT([warnopts], [1.0])
  68 AM_INIT_AUTOMAKE([-Wnone])
  69 AC_CONFIG_FILES([Makefile sub/Makefile])
  70 AC_OUTPUT
  71 END
  72 $ACLOCAL
  73 $AUTOMAKE
  74
  75 :