config/glibcversion.sh

   1 #!/bin/sh
   2 #
   3 # This Source Code Form is subject to the terms of the Mozilla Public
   4 # License, v. 2.0. If a copy of the MPL was not distributed with this
   5 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   6
   7 ##############################################################################
   8 ##
   9 ## Name:                glibcversion.sh - Print __GLIBC__ version if gnu libc 2 is
  10 ##              found.
  11 ##
  12 ## Description: This script is needed by the mozilla build system.  It needs
  13 ##              to determine whether the current platform (mostly the
  14 ##              various linux "platforms") are based on the gnu libc2.  This
  15 ##              information is later used in mozilla to determine whether
  16 ##              gnu libc 2 specific "features" need to be handled, such
  17 ##              as broken locales.
  18 ##
  19 ## Author:              Ramiro Estrugo <ramiro@netscape.com>
  20 ##
  21 ##############################################################################
  22
  23 ##
  24 ## Command Line Flags Supported:
  25 ##
  26 ##  -g  | --is-glibc2:                          Print True/False if detected __GLIBC__.
  27 ##
  28 ##  -v  | --print-version:                      Print value of __GLIBC__ if found, or none.
  29 ##
  30 ##  -o  | --set-object-name:            Set object name for current system.
  31 ##  -cc | --set-compiler:                       Set compiler for building test program.
  32 ##
  33
  34
  35 ##
  36 ## Constants
  37 ##
  38 GLIBC_PROG_PREFIX=./get_glibc_info
  39
  40 ##
  41 ## Defaults
  42 ##
  43 GLIBC_PRINT_IS_GLIBC2=False
  44
  45 GLIBC_PRINT_VERSION=False
  46
  47 GLIBC_OBJECT_NAME=`uname`-`uname -r`
  48 GLIBC_CC=cc
  49
  50 function glibc_usage()
  51 {
  52 echo
  53 echo "Usage:   `basename $0` [options]"
  54 echo
  55 echo "  -g,  --is-glibc2:          Print True/False if detected __GLIBC__."
  56 echo
  57 echo "  -v,  --print-version:      Print value of __GLIBC__ if found, or none."
  58 echo
  59 echo "  -o,  --set-object-name:    Set object name for current system."
  60 echo "  -cc, --set-compiler:       Set compiler for building test program."
  61 echo
  62 echo "  -h,  --help:               Print this blurb."
  63 echo
  64 echo "The default is '-v' if no options are given."
  65 echo
  66 }
  67
  68 ##
  69 ## Parse the command line
  70 ##
  71 while [ "$*" ]; do
  72     case $1 in
  73         -h | --help)
  74             shift
  75             glibc_usage
  76                         exit 0
  77             ;;
  78
  79         -g | --is-glibc2)
  80             shift
  81             GLIBC_PRINT_IS_GLIBC2=True
  82             ;;
  83
  84         -v | --print-version)
  85             shift
  86             GLIBC_PRINT_VERSION=True
  87             ;;
  88
  89         -o | --set-object-name)
  90             shift
  91             GLIBC_OBJECT_NAME="$1"
  92             shift
  93             ;;
  94
  95         -cc | --set-compiler)
  96             shift
  97             GLIBC_CC="$1"
  98             shift
  99             ;;
 100
 101         -*)
 102             echo "`basename $0`: invalid option '$1'"
 103             shift
 104             glibc_usage
 105                         exit 0
 106             ;;
 107     esac
 108 done
 109
 110 ##
 111 ## Motif info program name
 112 ##
 113 GLIBC_PROG="$GLIBC_PROG_PREFIX"_"$GLIBC_OBJECT_NAME"
 114 GLIBC_SRC="$GLIBC_PROG_PREFIX"_"$GLIBC_OBJECT_NAME.c"
 115
 116 ##
 117 ## Cleanup the dummy test source/program
 118 ##
 119 function glibc_cleanup()
 120 {
 121         true
 122
 123 #       rm -f $GLIBC_PROG
 124 #       rm -f $GLIBC_SRC
 125
 126 }
 127
 128 glibc_cleanup
 129
 130 if [ ! -f $GLIBC_SRC ]
 131 then
 132 cat << EOF > $GLIBC_SRC
 133 #include <stdio.h>
 134
 135 int main(int argc,char ** argv)
 136 {
 137 #ifdef  __GLIBC__
 138         fprintf(stdout,"%d\n",__GLIBC__);
 139 #else
 140         fprintf(stdout,"none\n");
 141 #endif
 142
 143         return 0;
 144 }
 145 EOF
 146 fi
 147
 148 if [ ! -f $GLIBC_SRC ]
 149 then
 150         echo
 151         echo "Could not create test program source $GLIBC_SRC."
 152         echo
 153
 154         glibc_cleanup
 155
 156         exit
 157 fi
 158
 159 ##
 160 ## Compile the dummy test program if needed
 161 ##
 162 if [ ! -x $GLIBC_PROG ]
 163 then
 164         $GLIBC_CC -o $GLIBC_PROG $GLIBC_SRC
 165 fi
 166
 167 if [ ! -x $GLIBC_PROG ]
 168 then
 169         echo
 170         echo "Could not create test program $GLIBC_PROG."
 171         echo
 172
 173         glibc_cleanup
 174
 175         exit
 176 fi
 177
 178 ##
 179 ## Execute the dummy test program
 180 ##
 181 GLIBC_PROG_OUTPUT=`$GLIBC_PROG`
 182
 183 ##
 184 ## -g | --is-glibc2
 185 ##
 186 if [ "$GLIBC_PRINT_IS_GLIBC2" = "True" ]
 187 then
 188         if [ "$GLIBC_PROG_OUTPUT" = "2" ]
 189         then
 190                 echo True
 191         else
 192                 echo False
 193         fi
 194
 195         glibc_cleanup
 196
 197         exit 0
 198 fi
 199
 200 echo $GLIBC_PROG_OUTPUT
 201
 202 glibc_cleanup