annotate compile @ 358:6abc3054cba2

From Jeffrey Morlan: If a readpst child process fails with a nonzero status code for whatever reason (killed, segfault, out-of-memory, ...) the parent process will continue and likely end up exiting with status 0, tricking the caller into thinking readpst was successful when it was not.
author Carl Byington <carl@five-ten-sg.com>
date Wed, 06 Jul 2016 10:19:01 -0700
parents ff1743cbe4aa
children
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1 #! /bin/sh
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2 # Wrapper for compilers which do not understand `-c -o'.
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3
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4 scriptversion=2004-09-10.20
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5
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6 # Copyright (C) 1999, 2000, 2003, 2004 Free Software Foundation, Inc.
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7 # Written by Tom Tromey <tromey@cygnus.com>.
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8 #
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9 # This program is free software; you can redistribute it and/or modify
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10 # it under the terms of the GNU General Public License as published by
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11 # the Free Software Foundation; either version 2, or (at your option)
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12 # any later version.
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13 #
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14 # This program is distributed in the hope that it will be useful,
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15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 # GNU General Public License for more details.
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18 #
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19 # You should have received a copy of the GNU General Public License
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20 # along with this program; if not, write to the Free Software
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21 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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22
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23 # As a special exception to the GNU General Public License, if you
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24 # distribute this file as part of a program that contains a
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25 # configuration script generated by Autoconf, you may include it under
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26 # the same distribution terms that you use for the rest of that program.
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27
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28 # This file is maintained in Automake, please report
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29 # bugs to <bug-automake@gnu.org> or send patches to
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30 # <automake-patches@gnu.org>.
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31
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32 case $1 in
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33 '')
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34 echo "$0: No command. Try \`$0 --help' for more information." 1>&2
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35 exit 1;
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36 ;;
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37 -h | --h*)
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38 cat <<\EOF
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39 Usage: compile [--help] [--version] PROGRAM [ARGS]
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40
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41 Wrapper for compilers which do not understand `-c -o'.
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42 Remove `-o dest.o' from ARGS, run PROGRAM with the remaining
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43 arguments, and rename the output as expected.
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44
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45 If you are trying to build a whole package this is not the
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46 right script to run: please start by reading the file `INSTALL'.
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47
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48 Report bugs to <bug-automake@gnu.org>.
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49 EOF
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50 exit 0
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51 ;;
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52 -v | --v*)
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53 echo "compile $scriptversion"
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54 exit 0
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55 ;;
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56 esac
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57
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58 ofile=
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59 cfile=
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60 eat=
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61
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62 for arg
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63 do
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64 if test -n "$eat"; then
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65 eat=
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66 else
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67 case $1 in
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68 -o)
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69 # configure might choose to run compile as `compile cc -o foo foo.c'.
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70 # So we strip `-o arg' only if arg is an object.
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71 eat=1
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72 case $2 in
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73 *.o | *.obj)
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74 ofile=$2
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75 ;;
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76 *)
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77 set x "$@" -o "$2"
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78 shift
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79 ;;
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80 esac
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81 ;;
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82 *.c)
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83 cfile=$1
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84 set x "$@" "$1"
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85 shift
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86 ;;
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87 *)
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88 set x "$@" "$1"
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89 shift
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90 ;;
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91 esac
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92 fi
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93 shift
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94 done
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95
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96 if test -z "$ofile" || test -z "$cfile"; then
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97 # If no `-o' option was seen then we might have been invoked from a
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98 # pattern rule where we don't need one. That is ok -- this is a
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99 # normal compilation that the losing compiler can handle. If no
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100 # `.c' file was seen then we are probably linking. That is also
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101 # ok.
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102 exec "$@"
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103 fi
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104
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105 # Name of file we expect compiler to create.
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106 cofile=`echo "$cfile" | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
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107
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108 # Create the lock directory.
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109 # Note: use `[/.-]' here to ensure that we don't use the same name
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110 # that we are using for the .o file. Also, base the name on the expected
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111 # object file name, since that is what matters with a parallel build.
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112 lockdir=`echo "$cofile" | sed -e 's|[/.-]|_|g'`.d
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113 while true; do
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114 if mkdir "$lockdir" >/dev/null 2>&1; then
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115 break
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116 fi
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117 sleep 1
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118 done
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119 # FIXME: race condition here if user kills between mkdir and trap.
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120 trap "rmdir '$lockdir'; exit 1" 1 2 15
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121
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122 # Run the compile.
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123 "$@"
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124 ret=$?
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125
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126 if test -f "$cofile"; then
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127 mv "$cofile" "$ofile"
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128 fi
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129
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130 rmdir "$lockdir"
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131 exit $ret
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132
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133 # Local Variables:
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134 # mode: shell-script
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135 # sh-indentation: 2
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136 # eval: (add-hook 'write-file-hooks 'time-stamp)
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137 # time-stamp-start: "scriptversion="
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138 # time-stamp-format: "%:y-%02m-%02d.%02H"
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139 # time-stamp-end: "$"
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140 # End: