tests/dollarvar.test

   1 #!/bin/sh
   2 # Copyright (C) 2009  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 <http://www.gnu.org/licenses/>.
  16
  17 # Test to make sure that -Wportability complains about recursive
  18 # variable expansions and variables containing `$', `$(...)', or
  19 # `${...}' in the name.  We support recursive variable expansions using
  20 # the latter two constructs for the `silent-rules' option, and they are
  21 # rather widely supported in practice.  OTOH variable definitions
  22 # containing a `$' on the left hand side of an assignment are not
  23 # portable in practice, even though POSIX allows them.  :-/
  24
  25 . ./defs
  26
  27 set -e
  28
  29 cat >Makefile.am <<'EOF'
  30 x = 1
  31 foo$x = 1
  32 bar$(x) = 1
  33 baz${x} = 1
  34 bla = $(foo$x)
  35 bli = $(foo$(x))
  36 blo = $(foo${x})
  37 EOF
  38
  39 $ACLOCAL
  40 AUTOMAKE_fails -Wportability
  41 grep 'Makefile.am:2' stderr
  42 grep 'Makefile.am:3' stderr
  43 grep 'Makefile.am:4' stderr
  44 grep 'Makefile.am:5' stderr
  45 grep 'Makefile.am:6' stderr
  46 grep 'Makefile.am:7' stderr
  47
  48 # On the other hand, if we allow `silent-rules' mode, then we need to
  49 # allow recursive variable expansion, too.
  50
  51 # This should work with the AM_SILENT_RULES macro.
  52 $sleep
  53 echo 'AM_SILENT_RULES' >> configure.in
  54
  55 $ACLOCAL --force
  56 AUTOMAKE_fails -Wportability
  57 grep 'Makefile.am:2' stderr
  58 grep 'Makefile.am:3' stderr
  59 grep 'Makefile.am:4' stderr
  60 grep 'Makefile.am:5' stderr
  61 grep 'Makefile.am:6' stderr && Exit 1
  62 grep 'Makefile.am:7' stderr && Exit 1
  63
  64
  65 :