t/dollarvar.sh

   1 #!/bin/sh
   2 # Copyright (C) 2009-2024 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 # 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 . test-init.sh
  26
  27 cat >Makefile.am <<'EOF'
  28 x = 1
  29 foo$x = 1
  30 bar$(x) = 1
  31 baz${x} = 1
  32 bla = $(foo$x)
  33 bli = $(foo$(x))
  34 blo = $(foo${x})
  35 EOF
  36
  37 $ACLOCAL
  38
  39 AUTOMAKE_fails -Wportability
  40 grep 'Makefile.am:2' stderr
  41 grep 'Makefile.am:3' stderr
  42 grep 'Makefile.am:4' stderr
  43 grep 'Makefile.am:5' stderr
  44 grep 'Makefile.am:6' stderr
  45 grep 'Makefile.am:7' stderr
  46
  47 AUTOMAKE_fails -Wportability -Wno-portability-recursive
  48 grep 'Makefile.am:2' stderr
  49 grep 'Makefile.am:3' stderr
  50 grep 'Makefile.am:4' stderr
  51 grep 'Makefile.am:5' stderr
  52 grep 'Makefile.am:6' stderr && exit 1
  53 grep 'Makefile.am:7' stderr && exit 1
  54
  55
  56 :