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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 $?
51    ;;
52  -v | --v*)
53    echo "compile $scriptversion"
54    exit $?
55    ;;
56esac
57
58ofile=
59cfile=
60eat=
61
62for arg
63do
64  if test -n "$eat"; then
65    eat=
66  else
67    case $1 in
68      -o)
69	# configure might choose to run compile as `compile cc -o foo foo.c'.
70	# So we strip `-o arg' only if arg is an object.
71	eat=1
72	case $2 in
73	  *.o | *.obj)
74	    ofile=$2
75	    ;;
76	  *)
77	    set x "$@" -o "$2"
78	    shift
79	    ;;
80	esac
81	;;
82      *.c)
83	cfile=$1
84	set x "$@" "$1"
85	shift
86	;;
87      *)
88	set x "$@" "$1"
89	shift
90	;;
91    esac
92  fi
93  shift
94done
95
96if test -z "$ofile" || test -z "$cfile"; then
97  # If no `-o' option was seen then we might have been invoked from a
98  # pattern rule where we don't need one.  That is ok -- this is a
99  # normal compilation that the losing compiler can handle.  If no
100  # `.c' file was seen then we are probably linking.  That is also
101  # ok.
102  exec "$@"
103fi
104
105# Name of file we expect compiler to create.
106cofile=`echo "$cfile" | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
107
108# Create the lock directory.
109# Note: use `[/.-]' here to ensure that we don't use the same name
110# that we are using for the .o file.  Also, base the name on the expected
111# object file name, since that is what matters with a parallel build.
112lockdir=`echo "$cofile" | sed -e 's|[/.-]|_|g'`.d
113while true; do
114  if mkdir "$lockdir" >/dev/null 2>&1; then
115    break
116  fi
117  sleep 1
118done
119# FIXME: race condition here if user kills between mkdir and trap.
120trap "rmdir '$lockdir'; exit 1" 1 2 15
121
122# Run the compile.
123"$@"
124ret=$?
125
126if test -f "$cofile"; then
127  mv "$cofile" "$ofile"
128elif test -f "${cofile}bj"; then
129  mv "${cofile}bj" "$ofile"
130fi
131
132rmdir "$lockdir"
133exit $ret
134
135# Local Variables:
136# mode: shell-script
137# sh-indentation: 2
138# eval: (add-hook 'write-file-hooks 'time-stamp)
139# time-stamp-start: "scriptversion="
140# time-stamp-format: "%:y-%02m-%02d.%02H"
141# time-stamp-end: "$"
142# End:
143