1#! /bin/sh
2
3# Wrapper for compilers which do not understand `-c -o'.
4
5# Copyright 1999, 2000 Free Software Foundation, Inc.
6# Written by Tom Tromey <tromey@cygnus.com>.
7#
8# This program is free software; you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation; either version 2, or (at your option)
11# any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the GNU General Public License
19# along with this program; if not, write to the Free Software
20# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21
22# As a special exception to the GNU General Public License, if you
23# distribute this file as part of a program that contains a
24# configuration script generated by Autoconf, you may include it under
25# the same distribution terms that you use for the rest of that program.
26
27# Usage:
28# compile PROGRAM [ARGS]...
29# `-o FOO.o' is removed from the args passed to the actual compile.
30
31# Usage statement added by Billy Biggs <vektor@dumbterm.net>.
32if [ -z $1 ]; then
33    echo "Wrapper for compilers which do not understand '-c -o'."
34    echo "usage: compile PROGRAM [ARGS]..."
35    echo "'-o FOO.o' is removed from the args passed to the actual compile."
36    exit 1
37fi
38
39prog=$1
40shift
41
42ofile=
43cfile=
44args=
45while test $# -gt 0; do
46   case "$1" in
47    -o)
48       # configure might choose to run compile as `compile cc -o foo foo.c'.
49       # So we do something ugly here.
50       ofile=$2
51       shift
52       case "$ofile" in
53	*.o | *.obj)
54	   ;;
55	*)
56	   args="$args -o $ofile"
57	   ofile=
58	   ;;
59       esac
60       ;;
61    *.c)
62       cfile=$1
63       args="$args $1"
64       ;;
65    *)
66       args="$args $1"
67       ;;
68   esac
69   shift
70done
71
72if test -z "$ofile" || test -z "$cfile"; then
73   # If no `-o' option was seen then we might have been invoked from a
74   # pattern rule where we don't need one.  That is ok -- this is a
75   # normal compilation that the losing compiler can handle.  If no
76   # `.c' file was seen then we are probably linking.  That is also
77   # ok.
78   exec "$prog" $args
79fi
80
81# Name of file we expect compiler to create.
82cofile=`echo $cfile | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
83
84# Create the lock directory.
85# Note: use `[/.-]' here to ensure that we don't use the same name
86# that we are using for the .o file.  Also, base the name on the expected
87# object file name, since that is what matters with a parallel build.
88lockdir=`echo $cofile | sed -e 's|[/.-]|_|g'`.d
89while true; do
90   if mkdir $lockdir > /dev/null 2>&1; then
91      break
92   fi
93   sleep 1
94done
95# FIXME: race condition here if user kills between mkdir and trap.
96trap "rmdir $lockdir; exit 1" 1 2 15
97
98# Run the compile.
99"$prog" $args
100status=$?
101
102if test -f "$cofile"; then
103   mv "$cofile" "$ofile"
104fi
105
106rmdir $lockdir
107exit $status
108