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, 2009 Free Software
7# Foundation, Inc.
8# Written by Tom Tromey <tromey@cygnus.com>.
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2, or (at your option)
13# any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program; if not, write to the Free Software
22# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23
24# As a special exception to the GNU General Public License, if you
25# distribute this file as part of a program that contains a
26# configuration script generated by Autoconf, you may include it under
27# the same distribution terms that you use for the rest of that program.
28
29# This file is maintained in Automake, please report
30# bugs to <bug-automake@gnu.org> or send patches to
31# <automake-patches@gnu.org>.
32
33case $1 in
34  '')
35     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
36     exit 1;
37     ;;
38  -h | --h*)
39    cat <<\EOF
40Usage: compile [--help] [--version] PROGRAM [ARGS]
41
42Wrapper for compilers which do not understand `-c -o'.
43Remove `-o dest.o' from ARGS, run PROGRAM with the remaining
44arguments, and rename the output as expected.
45
46If you are trying to build a whole package this is not the
47right script to run: please start by reading the file `INSTALL'.
48
49Report bugs to <bug-automake@gnu.org>.
50EOF
51    exit $?
52    ;;
53  -v | --v*)
54    echo "compile $scriptversion"
55    exit $?
56    ;;
57esac
58
59ofile=
60cfile=
61eat=
62
63for arg
64do
65  if test -n "$eat"; then
66    eat=
67  else
68    case $1 in
69      -o)
70	# configure might choose to run compile as `compile cc -o foo foo.c'.
71	# So we strip `-o arg' only if arg is an object.
72	eat=1
73	case $2 in
74	  *.o | *.obj)
75	    ofile=$2
76	    ;;
77	  *)
78	    set x "$@" -o "$2"
79	    shift
80	    ;;
81	esac
82	;;
83      *.c)
84	cfile=$1
85	set x "$@" "$1"
86	shift
87	;;
88      *)
89	set x "$@" "$1"
90	shift
91	;;
92    esac
93  fi
94  shift
95done
96
97if test -z "$ofile" || test -z "$cfile"; then
98  # If no `-o' option was seen then we might have been invoked from a
99  # pattern rule where we don't need one.  That is ok -- this is a
100  # normal compilation that the losing compiler can handle.  If no
101  # `.c' file was seen then we are probably linking.  That is also
102  # ok.
103  exec "$@"
104fi
105
106# Name of file we expect compiler to create.
107cofile=`echo "$cfile" | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
108
109# Create the lock directory.
110# Note: use `[/.-]' here to ensure that we don't use the same name
111# that we are using for the .o file.  Also, base the name on the expected
112# object file name, since that is what matters with a parallel build.
113lockdir=`echo "$cofile" | sed -e 's|[/.-]|_|g'`.d
114while true; do
115  if mkdir "$lockdir" >/dev/null 2>&1; then
116    break
117  fi
118  sleep 1
119done
120# FIXME: race condition here if user kills between mkdir and trap.
121trap "rmdir '$lockdir'; exit 1" 1 2 15
122
123# Run the compile.
124"$@"
125ret=$?
126
127if test -f "$cofile"; then
128  mv "$cofile" "$ofile"
129elif test -f "${cofile}bj"; then
130  mv "${cofile}bj" "$ofile"
131fi
132
133rmdir "$lockdir"
134exit $ret
135
136# Local Variables:
137# mode: shell-script
138# sh-indentation: 2
139# eval: (add-hook 'write-file-hooks 'time-stamp)
140# time-stamp-start: "scriptversion="
141# time-stamp-format: "%:y-%02m-%02d.%02H"
142# time-stamp-end: "$"
143# End:
144