1 | #! /bin/sh
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2 | # Common wrapper for a few potentially missing GNU programs.
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3 |
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4 | scriptversion=2018-03-07.03; # UTC
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5 |
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6 | # Copyright (C) 1996-2021 Free Software Foundation, Inc.
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7 | # Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
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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, see <https://www.gnu.org/licenses/>.
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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 | if test $# -eq 0; then
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28 | echo 1>&2 "Try '$0 --help' for more information"
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29 | exit 1
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30 | fi
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31 |
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32 | case $1 in
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33 |
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34 | --is-lightweight)
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35 | # Used by our autoconf macros to check whether the available missing
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36 | # script is modern enough.
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37 | exit 0
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38 | ;;
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39 |
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40 | --run)
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41 | # Back-compat with the calling convention used by older automake.
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42 | shift
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43 | ;;
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44 |
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45 | -h|--h|--he|--hel|--help)
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46 | echo "\
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47 | $0 [OPTION]... PROGRAM [ARGUMENT]...
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48 |
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49 | Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
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50 | to PROGRAM being missing or too old.
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51 |
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52 | Options:
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53 | -h, --help display this help and exit
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54 | -v, --version output version information and exit
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55 |
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56 | Supported PROGRAM values:
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57 | aclocal autoconf autoheader autom4te automake makeinfo
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58 | bison yacc flex lex help2man
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59 |
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60 | Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
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61 | 'g' are ignored when checking the name.
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62 |
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63 | Send bug reports to <bug-automake@gnu.org>."
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64 | exit $?
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65 | ;;
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66 |
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67 | -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
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68 | echo "missing $scriptversion (GNU Automake)"
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69 | exit $?
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70 | ;;
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71 |
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72 | -*)
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73 | echo 1>&2 "$0: unknown '$1' option"
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74 | echo 1>&2 "Try '$0 --help' for more information"
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75 | exit 1
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76 | ;;
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77 |
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78 | esac
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79 |
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80 | # Run the given program, remember its exit status.
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81 | "$@"; st=$?
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82 |
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83 | # If it succeeded, we are done.
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84 | test $st -eq 0 && exit 0
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85 |
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86 | # Also exit now if we it failed (or wasn't found), and '--version' was
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87 | # passed; such an option is passed most likely to detect whether the
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88 | # program is present and works.
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89 | case $2 in --version|--help) exit $st;; esac
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90 |
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91 | # Exit code 63 means version mismatch. This often happens when the user
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92 | # tries to use an ancient version of a tool on a file that requires a
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93 | # minimum version.
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94 | if test $st -eq 63; then
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95 | msg="probably too old"
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96 | elif test $st -eq 127; then
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97 | # Program was missing.
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98 | msg="missing on your system"
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99 | else
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100 | # Program was found and executed, but failed. Give up.
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101 | exit $st
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102 | fi
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103 |
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104 | perl_URL=https://www.perl.org/
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105 | flex_URL=https://github.com/westes/flex
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106 | gnu_software_URL=https://www.gnu.org/software
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107 |
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108 | program_details ()
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109 | {
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110 | case $1 in
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111 | aclocal|automake)
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112 | echo "The '$1' program is part of the GNU Automake package:"
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113 | echo "<$gnu_software_URL/automake>"
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114 | echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
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115 | echo "<$gnu_software_URL/autoconf>"
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116 | echo "<$gnu_software_URL/m4/>"
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117 | echo "<$perl_URL>"
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118 | ;;
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119 | autoconf|autom4te|autoheader)
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120 | echo "The '$1' program is part of the GNU Autoconf package:"
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121 | echo "<$gnu_software_URL/autoconf/>"
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122 | echo "It also requires GNU m4 and Perl in order to run:"
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123 | echo "<$gnu_software_URL/m4/>"
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124 | echo "<$perl_URL>"
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125 | ;;
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126 | esac
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127 | }
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128 |
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129 | give_advice ()
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130 | {
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131 | # Normalize program name to check for.
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132 | normalized_program=`echo "$1" | sed '
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133 | s/^gnu-//; t
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134 | s/^gnu//; t
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135 | s/^g//; t'`
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136 |
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137 | printf '%s\n' "'$1' is $msg."
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138 |
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139 | configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
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140 | case $normalized_program in
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141 | autoconf*)
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142 | echo "You should only need it if you modified 'configure.ac',"
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143 | echo "or m4 files included by it."
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144 | program_details 'autoconf'
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145 | ;;
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146 | autoheader*)
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147 | echo "You should only need it if you modified 'acconfig.h' or"
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148 | echo "$configure_deps."
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149 | program_details 'autoheader'
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150 | ;;
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151 | automake*)
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152 | echo "You should only need it if you modified 'Makefile.am' or"
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153 | echo "$configure_deps."
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154 | program_details 'automake'
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155 | ;;
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156 | aclocal*)
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157 | echo "You should only need it if you modified 'acinclude.m4' or"
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158 | echo "$configure_deps."
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159 | program_details 'aclocal'
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160 | ;;
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161 | autom4te*)
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162 | echo "You might have modified some maintainer files that require"
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163 | echo "the 'autom4te' program to be rebuilt."
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164 | program_details 'autom4te'
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165 | ;;
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166 | bison*|yacc*)
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167 | echo "You should only need it if you modified a '.y' file."
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168 | echo "You may want to install the GNU Bison package:"
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169 | echo "<$gnu_software_URL/bison/>"
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170 | ;;
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171 | lex*|flex*)
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172 | echo "You should only need it if you modified a '.l' file."
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173 | echo "You may want to install the Fast Lexical Analyzer package:"
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174 | echo "<$flex_URL>"
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175 | ;;
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176 | help2man*)
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177 | echo "You should only need it if you modified a dependency" \
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178 | "of a man page."
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179 | echo "You may want to install the GNU Help2man package:"
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180 | echo "<$gnu_software_URL/help2man/>"
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181 | ;;
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182 | makeinfo*)
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183 | echo "You should only need it if you modified a '.texi' file, or"
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184 | echo "any other file indirectly affecting the aspect of the manual."
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185 | echo "You might want to install the Texinfo package:"
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186 | echo "<$gnu_software_URL/texinfo/>"
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187 | echo "The spurious makeinfo call might also be the consequence of"
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188 | echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
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189 | echo "want to install GNU make:"
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190 | echo "<$gnu_software_URL/make/>"
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191 | ;;
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192 | *)
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193 | echo "You might have modified some files without having the proper"
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194 | echo "tools for further handling them. Check the 'README' file, it"
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195 | echo "often tells you about the needed prerequisites for installing"
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196 | echo "this package. You may also peek at any GNU archive site, in"
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197 | echo "case some other package contains this missing '$1' program."
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198 | ;;
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199 | esac
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200 | }
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201 |
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202 | give_advice "$1" | sed -e '1s/^/WARNING: /' \
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203 | -e '2,$s/^/ /' >&2
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204 |
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205 | # Propagate the correct exit status (expected to be 127 for a program
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206 | # not found, 63 for a program that failed due to version mismatch).
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207 | exit $st
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208 |
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209 | # Local variables:
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210 | # eval: (add-hook 'before-save-hook 'time-stamp)
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211 | # time-stamp-start: "scriptversion="
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212 | # time-stamp-format: "%:y-%02m-%02d.%02H"
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213 | # time-stamp-time-zone: "UTC0"
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214 | # time-stamp-end: "; # UTC"
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215 | # End:
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