#! /bin/sh
 # Wrapper for compilers which do not understand `-c -o'.
 
 scriptversion=2009-10-06.20; # UTC
 
 # Copyright (C) 1999, 2000, 2003, 2004, 2005, 2009  Free Software
 # Foundation, Inc.
 # Written by Tom Tromey <tromey@cygnus.com>.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2, or (at your option)
 # any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
 # configuration script generated by Autoconf, you may include it under
 # the same distribution terms that you use for the rest of that program.
 
 # This file is maintained in Automake, please report
 # bugs to <bug-automake@gnu.org> or send patches to
 # <automake-patches@gnu.org>.
 
 case $1 in
   '')
      echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
      exit 1;
      ;;
   -h | --h*)
     cat <<\EOF
 Usage: compile [--help] [--version] PROGRAM [ARGS]
 
 Wrapper for compilers which do not understand `-c -o'.
 Remove `-o dest.o' from ARGS, run PROGRAM with the remaining
 arguments, and rename the output as expected.
 
 If you are trying to build a whole package this is not the
 right script to run: please start by reading the file `INSTALL'.
 
 Report bugs to <bug-automake@gnu.org>.
 EOF
     exit $?
     ;;
   -v | --v*)
     echo "compile $scriptversion"
     exit $?
     ;;
 esac
 
 ofile=
 cfile=
 eat=
 
 for arg
 do
   if test -n "$eat"; then
     eat=
   else
     case $1 in
       -o)
 	# configure might choose to run compile as `compile cc -o foo foo.c'.
 	# So we strip `-o arg' only if arg is an object.
 	eat=1
 	case $2 in
 	  *.o | *.obj)
 	    ofile=$2
 	    ;;
 	  *)
 	    set x "$@" -o "$2"
 	    shift
 	    ;;
 	esac
 	;;
       *.c)
 	cfile=$1
 	set x "$@" "$1"
 	shift
 	;;
       *)
 	set x "$@" "$1"
 	shift
 	;;
     esac
   fi
   shift
 done
 
 if test -z "$ofile" || test -z "$cfile"; then
   # If no `-o' option was seen then we might have been invoked from a
   # pattern rule where we don't need one.  That is ok -- this is a
   # normal compilation that the losing compiler can handle.  If no
   # `.c' file was seen then we are probably linking.  That is also
   # ok.
   exec "$@"
 fi
 
 # Name of file we expect compiler to create.
 cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
 
 # Create the lock directory.
 # Note: use `[/\\:.-]' here to ensure that we don't use the same name
 # that we are using for the .o file.  Also, base the name on the expected
 # object file name, since that is what matters with a parallel build.
 lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
 while true; do
   if mkdir "$lockdir" >/dev/null 2>&1; then
     break
   fi
   sleep 1
 done
 # FIXME: race condition here if user kills between mkdir and trap.
 trap "rmdir '$lockdir'; exit 1" 1 2 15
 
 # Run the compile.
 "$@"
 ret=$?
 
 if test -f "$cofile"; then
   test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
 elif test -f "${cofile}bj"; then
   test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
 fi
 
 rmdir "$lockdir"
 exit $ret
 
 # Local Variables:
 # mode: shell-script
 # sh-indentation: 2
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
 # time-stamp-time-zone: "UTC"
 # time-stamp-end: "; # UTC"
 # End: