t/subobjname.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 we reuse variables whenever possible, to limit
  18 # combinational explosion.  (This test is named after the &subobjname
  19 # sub in Automake).
  20
  21 . test-init.sh
  22
  23 cat >> configure.ac << 'END'
  24 AC_PROG_CC
  25 AM_CONDITIONAL([FOO1], [some test])
  26 AM_CONDITIONAL([FOO2], [some test])
  27 AM_CONDITIONAL([FOO3], [some test])
  28 AC_OUTPUT
  29 END
  30
  31 cat > Makefile.am << 'END'
  32 noinst_PROGRAMS = c d
  33
  34 if FOO1
  35 A1=a1.c
  36 endif
  37
  38 if FOO2
  39 A2=a2.c
  40 endif
  41
  42 if FOO3
  43 A3=a3.c
  44 endif
  45
  46 B=$(A1) $(A2) $(A3)
  47
  48 c_SOURCES=$(B)
  49 d_SOURCES=$(B)
  50 END
  51
  52 $ACLOCAL
  53 $AUTOMAKE -a
  54
  55 # Sanity check: make sure am_c_OBJECTS and am_d_OBJECTS are used
  56 # in the Makefile.  (This is an internal detail, so better make
  57 # sure we update this test if the naming changes in the future.)
  58 grep '^am_c_OBJECTS = ' Makefile.in
  59 grep '^am_d_OBJECTS = ' Makefile.in
  60
  61 # Now the actual test.  Are both values equal?
  62 cobj=$(sed -n '/^am_c_OBJECTS = / {
  63                  s/.* = \(.*\)$/\1/
  64                  p
  65                }' Makefile.in)
  66 dobj=$(sed -n '/^am_d_OBJECTS = / {
  67                  s/^.* = \(.*\)$/\1/
  68                  p
  69               }' Makefile.in)
  70 test "$cobj" = "$dobj"
  71
  72 :