1#! /bin/sh
2# Wrapper for compilers which do not understand `-c -o'.
3
4scriptversion=2005-05-14.22
5
6# Copyright (C) 1999, 2000, 2003, 2004, 2005 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 3, 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, see <http://www.gnu.org/licenses/>.
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# This file is maintained in Automake, please report
28# bugs to <bug-automake@gnu.org> or send patches to
29# <automake-patches@gnu.org>.
30
31case $1 in
32  '')
33     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
34     exit 1;
35     ;;
36  -h | --h*)
37    cat <<\EOF
38Usage: compile [--help] [--version] PROGRAM [ARGS]
39
40Wrapper for compilers which do not understand `-c -o'.
41Remove `-o dest.o' from ARGS, run PROGRAM with the remaining
42arguments, and rename the output as expected.
43
44If you are trying to build a whole package this is not the
45right script to run: please start by reading the file `INSTALL'.
46
47Report bugs to <bug-automake@gnu.org>.
48EOF
49    exit $?
50    ;;
51  -v | --v*)
52    echo "compile $scriptversion"
53    exit $?
54    ;;
55esac
56
57ofile=
58cfile=
59eat=
60
61for arg
62do
63  if test -n "$eat"; then
64    eat=
65  else
66    case $1 in
67      -o)
68	# configure might choose to run compile as `compile cc -o foo foo.c'.
69	# So we strip `-o arg' only if arg is an object.
70	eat=1
71	case $2 in
72	  *.o | *.obj)
73	    ofile=$2
74	    ;;
75	  *)
76	    set x "$@" -o "$2"
77	    shift
78	    ;;
79	esac
80	;;
81      *.c)
82	cfile=$1
83	set x "$@" "$1"
84	shift
85	;;
86      *)
87	set x "$@" "$1"
88	shift
89	;;
90    esac
91  fi
92  shift
93done
94
95if test -z "$ofile" || test -z "$cfile"; then
96  # If no `-o' option was seen then we might have been invoked from a
97  # pattern rule where we don't need one.  That is ok -- this is a
98  # normal compilation that the losing compiler can handle.  If no
99  # `.c' file was seen then we are probably linking.  That is also
100  # ok.
101  exec "$@"
102fi
103
104# Name of file we expect compiler to create.
105cofile=`echo "$cfile" | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
106
107# Create the lock directory.
108# Note: use `[/.-]' here to ensure that we don't use the same name
109# that we are using for the .o file.  Also, base the name on the expected
110# object file name, since that is what matters with a parallel build.
111lockdir=`echo "$cofile" | sed -e 's|[/.-]|_|g'`.d
112while true; do
113  if mkdir "$lockdir" >/dev/null 2>&1; then
114    break
115  fi
116  sleep 1
117done
118# FIXME: race condition here if user kills between mkdir and trap.
119trap "rmdir '$lockdir'; exit 1" 1 2 15
120
121# Run the compile.
122"$@"
123ret=$?
124
125if test -f "$cofile"; then
126  mv "$cofile" "$ofile"
127elif test -f "${cofile}bj"; then
128  mv "${cofile}bj" "$ofile"
129fi
130
131rmdir "$lockdir"
132exit $ret
133
134# Local Variables:
135# mode: shell-script
136# sh-indentation: 2
137# eval: (add-hook 'write-file-hooks 'time-stamp)
138# time-stamp-start: "scriptversion="
139# time-stamp-format: "%:y-%02m-%02d.%02H"
140# time-stamp-end: "$"
141# End:
142