t/subst-no-trailing-empty-line.sh

   1 #! /bin/sh
   2 # Copyright (C) 2003-2024 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 # If the last line of a automake-rewritten definition is made only of
  18 # @substitutions@, automake should take care of appending an empty
  19 # variable to make sure that line cannot end up substituted as a blank
  20 # line (that would confuse HP-UX Make).
  21 # These checks have been introduced in commit 'Release-1-9-254-g9d0eaef'
  22 # into the former test 'subst2.test'.
  23
  24 . test-init.sh
  25
  26 # These are deliberately quite long, so that the xxx_PROGRAMS definition
  27 # in Makefile.am below will be split on multiple lines, with the last
  28 # line containing only @substituted@ stuff that expands to empty (this is
  29 # required to expose the bug we are testing).
  30 v1=ABCDEFGHIJKLMNOPQRSTUVWX
  31 v2=ABCDEFGHIJKLMNOPQRSTUVWXY
  32 v3=ABCDEFGHIJKLMNOPQRSTUVWXYZ
  33
  34 # Literal backslash for use by grep.
  35 bs='\\'
  36
  37 cat >> configure.ac <<END
  38 AC_SUBST([A], [''])
  39 AC_SUBST([$v1], [''])
  40 AC_SUBST([$v2], [''])
  41 AC_SUBST([$v3], [''])
  42 AC_OUTPUT
  43 END
  44
  45 cat >Makefile.am <<END
  46 AUTOMAKE_OPTIONS = no-dependencies
  47 CC = false
  48 EXEEXT =
  49
  50 ## The "x" and "zardoz" strings and the use of '+=' are there to ensure
  51 ## that these variables get rewritten by Automake.
  52 noinst_PROGRAMS = x @$v1@ @$v2@ @$v3@
  53 bin_PROGRAMS = @A@
  54 bin_PROGRAMS += @$v1@ @$v2@ @$v3@
  55 check_PROGRAMS = zardoz \$(noinst_PROGRAMS)
  56
  57 ## Required whenever there are @substituted@ values in the
  58 ## PROGRAMS primary, otherwise automake will complain.
  59 EXTRA_PROGRAMS =
  60
  61 test-real-empty:
  62         is \$(noinst_PROGRAMS) == x
  63         is \$(bin_PROGRAMS)    ==
  64         is \$(check_PROGRAMS)  == zardoz x
  65
  66 test-fake-empty:
  67         is \$(noinst_PROGRAMS) == x X
  68         is \$(bin_PROGRAMS)    == X
  69         is \$(check_PROGRAMS)  == zardoz x X
  70 END
  71
  72 $ACLOCAL
  73 $AUTOCONF
  74 $AUTOMAKE
  75 # For debugging.
  76 $EGREP -n 'ABCD|am__empty' Makefile.in
  77 # Sanity check.
  78 test $($EGREP -c "^[ $tab]*@$v2@ @$v3@[ $tab]*$bs?$" Makefile.in) -eq 3
  79
  80 ./configure
  81 {
  82   sed -n '/^noinst_PROGRAMS *=/,/[^\\]$/p' Makefile
  83   sed -n '/^bin_PROGRAMS *=/,/[^\\]$/p' Makefile
  84   sed -n '/^check_PROGRAMS *=/,/[^\\]$/p' Makefile
  85   sed -n '/^am__EXEEXT.*=/,/[^\\]$/p' Makefile
  86 } >t-programs
  87 cat t-programs
  88 grep '^ *$' t-programs && exit 1
  89
  90 run_make test-real-empty
  91 run_make test-fake-empty am__empty=X
  92
  93 :