joachim99@14: #! /bin/sh
joachim99@14: 
joachim99@14: # Wrapper for compilers which do not understand `-c -o'.
joachim99@14: 
joachim99@14: # Copyright 1999, 2000 Free Software Foundation, Inc.
joachim99@14: # Written by Tom Tromey <tromey@cygnus.com>.
joachim99@14: #
joachim99@14: # This program is free software; you can redistribute it and/or modify
joachim99@14: # it under the terms of the GNU General Public License as published by
joachim99@14: # the Free Software Foundation; either version 2, or (at your option)
joachim99@14: # any later version.
joachim99@14: #
joachim99@14: # This program is distributed in the hope that it will be useful,
joachim99@14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
joachim99@14: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
joachim99@14: # GNU General Public License for more details.
joachim99@14: #
joachim99@14: # You should have received a copy of the GNU General Public License
joachim99@14: # along with this program; if not, write to the Free Software
joachim99@14: # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
joachim99@14: 
joachim99@14: # As a special exception to the GNU General Public License, if you
joachim99@14: # distribute this file as part of a program that contains a
joachim99@14: # configuration script generated by Autoconf, you may include it under
joachim99@14: # the same distribution terms that you use for the rest of that program.
joachim99@14: 
joachim99@14: # Usage:
joachim99@14: # compile PROGRAM [ARGS]...
joachim99@14: # `-o FOO.o' is removed from the args passed to the actual compile.
joachim99@14: 
joachim99@14: prog=$1
joachim99@14: shift
joachim99@14: 
joachim99@14: ofile=
joachim99@14: cfile=
joachim99@14: args=
joachim99@14: while test $# -gt 0; do
joachim99@14:    case "$1" in
joachim99@14:     -o)
joachim99@14:        # configure might choose to run compile as `compile cc -o foo foo.c'.
joachim99@14:        # So we do something ugly here.
joachim99@14:        ofile=$2
joachim99@14:        shift
joachim99@14:        case "$ofile" in
joachim99@14: 	*.o | *.obj)
joachim99@14: 	   ;;
joachim99@14: 	*)
joachim99@14: 	   args="$args -o $ofile"
joachim99@14: 	   ofile=
joachim99@14: 	   ;;
joachim99@14:        esac
joachim99@14:        ;;
joachim99@14:     *.c)
joachim99@14:        cfile=$1
joachim99@14:        args="$args $1"
joachim99@14:        ;;
joachim99@14:     *)
joachim99@14:        args="$args $1"
joachim99@14:        ;;
joachim99@14:    esac
joachim99@14:    shift
joachim99@14: done
joachim99@14: 
joachim99@14: if test -z "$ofile" || test -z "$cfile"; then
joachim99@14:    # If no `-o' option was seen then we might have been invoked from a
joachim99@14:    # pattern rule where we don't need one.  That is ok -- this is a
joachim99@14:    # normal compilation that the losing compiler can handle.  If no
joachim99@14:    # `.c' file was seen then we are probably linking.  That is also
joachim99@14:    # ok.
joachim99@14:    exec "$prog" $args
joachim99@14: fi
joachim99@14: 
joachim99@14: # Name of file we expect compiler to create.
joachim99@14: cofile=`echo $cfile | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
joachim99@14: 
joachim99@14: # Create the lock directory.
joachim99@14: # Note: use `[/.-]' here to ensure that we don't use the same name
joachim99@14: # that we are using for the .o file.  Also, base the name on the expected
joachim99@14: # object file name, since that is what matters with a parallel build.
joachim99@14: lockdir=`echo $cofile | sed -e 's|[/.-]|_|g'`.d
joachim99@14: while true; do
joachim99@14:    if mkdir $lockdir > /dev/null 2>&1; then
joachim99@14:       break
joachim99@14:    fi
joachim99@14:    sleep 1
joachim99@14: done
joachim99@14: # FIXME: race condition here if user kills between mkdir and trap.
joachim99@14: trap "rmdir $lockdir; exit 1" 1 2 15
joachim99@14: 
joachim99@14: # Run the compile.
joachim99@14: "$prog" $args
joachim99@14: status=$?
joachim99@14: 
joachim99@14: if test -f "$cofile"; then
joachim99@14:    mv "$cofile" "$ofile"
joachim99@14: fi
joachim99@14: 
joachim99@14: rmdir $lockdir
joachim99@14: exit $status