1#! /bin/sh
2# Wrapper for compilers which do not understand `-c -o'.
3
4scriptversion=2003-11-09.00
5
6# Copyright (C) 1999, 2000, 2003 Free Software Foundation, Inc.
7# Written by Tom Tromey <tromey@cygnus.com>.
8#
9# This program is free software; you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation; either version 2, or (at your option)
12# any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program; if not, write to the Free Software
21# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22
23# As a special exception to the GNU General Public License, if you
24# distribute this file as part of a program that contains a
25# configuration script generated by Autoconf, you may include it under
26# the same distribution terms that you use for the rest of that program.
27
28# This file is maintained in Automake, please report
29# bugs to <bug-automake@gnu.org> or send patches to
30# <automake-patches@gnu.org>.
31
32case $1 in
33  '')
34     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
35     exit 1;
36     ;;
37  -h | --h*)
38    cat <<\EOF
39Usage: compile [--help] [--version] PROGRAM [ARGS]
40
41Wrapper for compilers which do not understand `-c -o'.
42Remove `-o dest.o' from ARGS, run PROGRAM with the remaining
43arguments, and rename the output as expected.
44
45If you are trying to build a whole package this is not the
46right script to run: please start by reading the file `INSTALL'.
47
48Report bugs to <bug-automake@gnu.org>.
49EOF
50    exit 0
51    ;;
52  -v | --v*)
53    echo "compile $scriptversion"
54    exit 0
55    ;;
56esac
57
58
59prog=$1
60shift
61
62ofile=
63cfile=
64args=
65while test $# -gt 0; do
66  case "$1" in
67    -o)
68      # configure might choose to run compile as `compile cc -o foo foo.c'.
69      # So we do something ugly here.
70      ofile=$2
71      shift
72      case "$ofile" in
73	*.o | *.obj)
74	  ;;
75	*)
76	  args="$args -o $ofile"
77	  ofile=
78	  ;;
79      esac
80       ;;
81    *.c)
82      cfile=$1
83      args="$args $1"
84      ;;
85    *)
86      args="$args $1"
87      ;;
88  esac
89  shift
90done
91
92if test -z "$ofile" || test -z "$cfile"; then
93  # If no `-o' option was seen then we might have been invoked from a
94  # pattern rule where we don't need one.  That is ok -- this is a
95  # normal compilation that the losing compiler can handle.  If no
96  # `.c' file was seen then we are probably linking.  That is also
97  # ok.
98  exec "$prog" $args
99fi
100
101# Name of file we expect compiler to create.
102cofile=`echo $cfile | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
103
104# Create the lock directory.
105# Note: use `[/.-]' here to ensure that we don't use the same name
106# that we are using for the .o file.  Also, base the name on the expected
107# object file name, since that is what matters with a parallel build.
108lockdir=`echo $cofile | sed -e 's|[/.-]|_|g'`.d
109while true; do
110  if mkdir $lockdir > /dev/null 2>&1; then
111    break
112  fi
113  sleep 1
114done
115# FIXME: race condition here if user kills between mkdir and trap.
116trap "rmdir $lockdir; exit 1" 1 2 15
117
118# Run the compile.
119"$prog" $args
120status=$?
121
122if test -f "$cofile"; then
123  mv "$cofile" "$ofile"
124fi
125
126rmdir $lockdir
127exit $status
128
129# Local Variables:
130# mode: shell-script
131# sh-indentation: 2
132# eval: (add-hook 'write-file-hooks 'time-stamp)
133# time-stamp-start: "scriptversion="
134# time-stamp-format: "%:y-%02m-%02d.%02H"
135# time-stamp-end: "$"
136# End:
137