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