t/cond5.sh

   1 #! /bin/sh
   2 # Copyright (C) 1998-2017 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 # Yet another sources-in-conditional test.  Report from Tim Goodwin.
  18
  19 . test-init.sh
  20
  21 cat >> configure.ac << 'END'
  22 AC_PROG_CC
  23 AM_CONDITIONAL([ONE], [true])
  24 AM_CONDITIONAL([TWO], [false])
  25 AC_OUTPUT
  26 END
  27
  28 cat > Makefile.am << 'END'
  29 bin_PROGRAMS = targ
  30
  31 if ONE
  32 OPT_SRC = one.c
  33 endif
  34
  35 if TWO
  36 OPT_SRC = $(OPT_SRC) two.c
  37 endif
  38
  39 targ_SOURCES = main.c $(OPT_SRC)
  40 END
  41
  42 # The bug is that automake hangs.  So we give it an appropriate grace
  43 # time, then kill it if necessary.
  44 $ACLOCAL
  45 $AUTOMAKE 2>stderr &
  46 pid=$!
  47
  48 # MSYS bash seems to have a bug in kill, so don't try to kill too soon.
  49 # The extra quoting avoids a maintainer-check failure.
  50 sleep '2'
  51
  52 # Make at most 30 tries, one every 10 seconds (= 300 seconds = 5 min).
  53 try=1
  54 while test $try -le 30; do
  55   if kill -0 $pid; then
  56     : process $pid is still alive, wait and retry
  57     sleep '10'
  58     try=$(($try + 1))
  59   else
  60     cat stderr >&2
  61     # Automake must fail with a proper error message.
  62     grep 'variable.*OPT_SRC.*recursively defined' stderr
  63     exit 0
  64   fi
  65 done
  66 # The automake process probably hung.  Kill it, and exit with failure.
  67 echo "$me: Automake process $pid hung"
  68 kill $pid
  69 exit 1