tests/cond29.test

   1 #!/bin/sh
   2 # Copyright (C) 2003  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 3, 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 # Check that many conditions do not lead to combinatorial explosion.
  18 # (This is related to PR/352.)
  19 #
  20 # On this test, Automake 1.7.x would compute all 2**22 = 4194304
  21 # possible combinations of conditionals (it would do this five times,
  22 # to define a01_DEPENDENCIES, a02_DEPENDENCIES, a03_OBJECTS,
  23 # a04_OBJECTS, and to rewrite bin_PROGRAM), eating all memory, swap,
  24 # or cpu time it can found.  Although this test won't print `FAIL' if
  25 # it fails, it will take long enough so it can't go unnoticed.
  26
  27 . ./defs
  28
  29 set -e
  30
  31 echo AC_PROG_CC >>configure.in
  32
  33 cat >Makefile.am <<EOF
  34 bin_PROGRAMS = a
  35 a02_LDADD =
  36 a03_SOURCES =
  37 EOF
  38
  39 for i in 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22; do
  40 cat >>Makefile.am <<EOF
  41 if C$i
  42 bin_PROGRAMS += a$i
  43 a01_LDADD = foo${i}.o
  44 a02_LDADD += bar${i}.o
  45 a03_SOURCES += baz${i}.c
  46 a04_SOURCES = quux${i}.c
  47 endif C$i
  48 EOF
  49 echo "AM_CONDITIONAL([C$i], [:])" >>configure.in
  50 done
  51
  52 $ACLOCAL
  53 $AUTOMAKE