#! /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: