configure

   1 #!/bin/sh
   2
   3 set -e
   4
   5 error() {
   6   echo >&2 "$0: error: $@"
   7 }
   8
   9 fatal_error() {
  10   error "$@"
  11   exit 1
  12 }
  13
  14 show_usage() {
  15 cat <<EOT
  16 Usage: $0 [OPTION]... [VAR=VALUE]...
  17
  18 This script creates necessary configuration files to build/install.
  19
  20 To assign environment variables (e.g., CC, CFLAGS...), specify them as
  21 VAR=VALUE.  See below for descriptions of some of the useful variables.
  22
  23 Defaults for the options are specified in brackets.
  24
  25 Main options:
  26   -h, --help             display this help and exit
  27   --prefix=[path]        base path [/usr/local]
  28   --bindir=DIR           user executables [PREFIX/bin]
  29   --sbindir=DIR          system admin executables [PREFIX/sbin]
  30   --libdir=DIR           object code libraries [PREFIX/lib]
  31   --scriptdir=DIR        script type plugins [LIBDIR/vlock/scripts]
  32   --moduledir=DIR        module type plugins [LIBDIR/vlock/modules]
  33   --mandir=DIR           man documentation [PREFIX/share/man]
  34
  35 Optional Features:
  36   --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
  37   --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
  38   --enable-plugins        enable plugin support [enabled]
  39   --enable-pam            enable PAM authentication [enabled]
  40   --enable-shadow         enable shadow authentication [disabled]
  41   --enable-root-password  enable unlogging with root password [enabled]
  42
  43 Some influential environment variables:
  44   CC          C compiler command
  45   CFLAGS      C compiler flags
  46   LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
  47               nonstandard directory <lib dir>
  48   CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
  49               headers in a nonstandard directory <include dir>
  50   CPP         C preprocessor
  51
  52 Use these variables to override the choices made by \`configure' or to help
  53 it to find libraries and programs with nonstandard names/locations.
  54
  55 Report bugs to <frank-vlock@benkstein.net>.
  56 EOT
  57 }
  58
  59 enable_feature() {
  60   case "$1" in
  61     plugins)
  62       enable_plugins="$2"
  63     ;;
  64     root-password)
  65       enable_root_password="$2"
  66     ;;
  67     pam|shadow)
  68       if [ "$2" = "yes" ] ; then
  69         if [ -n "$auth_method" ] && [ "$auth_method" != "$1" ] ; then
  70           fatal_error "pam and shadow authentication are mutually exclusive"
  71         fi
  72         auth_method="$1"
  73       else
  74         fatal_error "cannot disable authentication"
  75       fi
  76     ;;
  77     *)
  78       fatal_error "invalid feature name: $1"
  79     ;;
  80   esac
  81 }
  82
  83 while [ $# -gt 0 ] ; do
  84   opt=`expr "x$1" : 'x\([^=]*\)=.*' ||:`
  85   optarg=`expr "x$1" : 'x[^=]*=\(.*\)' ||:`
  86   case "$1" in
  87     --disable-*)
  88       feature=`expr "$1" : '--disable-\(.*\)'`
  89       enable_feature "$feature" no
  90       shift
  91     ;;
  92     --enable-*=no)
  93       feature=`expr "$1" : '--enable-\(.*\)=no'`
  94       enable_feature "$feature" no
  95       shift
  96     ;;
  97     --enable-*=yes)
  98       feature=`expr "$1" : '--enable-\(.*\)=yes'`
  99       enable_feature "$feature" yes
 100       shift
 101     ;;
 102     --enable-*)
 103       feature=`expr "$1" : '--enable-\(.*\)'`
 104       enable_feature "$feature" yes
 105       shift
 106     ;;
 107     --*=*)
 108       shift
 109       # unshift
 110       eval set -- "$opt" "$optarg" "$@"
 111     ;;
 112     --prefix)
 113       prefix="$2"
 114       shift 2 || fatal_error "$1 argument missing"
 115     ;;
 116     --bindir)
 117       bindir="$2"
 118       shift 2 || fatal_error "$1 argument missing"
 119     ;;
 120     --sbindir)
 121       sbindir="$2"
 122       shift 2 || fatal_error "$1 argument missing"
 123     ;;
 124     --libdir)
 125       libdir="$2"
 126       shift 2 || fatal_error "$1 argument missing"
 127     ;;
 128     --moduledir)
 129       moduledir="$2"
 130       shift 2 || fatal_error "$1 argument missing"
 131     ;;
 132     --scriptdir)
 133       scriptdir="$2"
 134       shift 2 || fatal_error "$1 argument missing"
 135     ;;
 136     --mandir)
 137       mandir="$2"
 138       shift 2 || fatal_error "$1 argument missing"
 139     ;;
 140     --help)
 141       show_usage
 142       exit
 143     ;;
 144     --*)
 145       error "unrecognized option: $1"
 146       echo >&2 "Try \`$0 --help' for more information."
 147       exit 1
 148     ;;
 149     *)
 150       fatal_error "invalid argument: $1"
 151     ;;
 152   esac
 153 done
 154
 155 cat <<EOF
 156 vlock configuration"
 157
 158 directories:
 159   prefix:     $PREFIX
 160   bindir:     $BINDIR
 161   sbindir:    $SBINDIR
 162   libdir:     $LIBDIR
 163   scriptdir:  $SCRIPTDIR
 164   moduledir:  $MODULEDIR
 165
 166 features:
 167   plugins:        $ENABLE_PLUGINS
 168   root-password:  $ENABLE_ROOT_PASSWORD
 169   auth-method:    $AUTH_METHOD
 170 EOF