config/config_feature.m4

   1 # ===========================================================================
   2 #     http://www.gnu.org/software/autoconf-archive/ax_config_feature.html
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_CONFIG_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION, DEFINE, DEFINE-DESCRIPTION, [ACTION-IF-ENABLED [, ACTION-IF-NOT-ENABLED]])
   8 #
   9 # DESCRIPTION
  10 #
  11 #   AX_CONFIG_FEATURE is a simple wrapper for AC_ARG_ENABLE, it enables the
  12 #   feature FEATURE-NAME and AC_DEFINEs the passed DEFINE, depending on the
  13 #   user choice. DESCRIPTION will be used for AC_DEFINEs. ACTION-IF-ENABLED
  14 #   and ACTION-IF-NOT-ENABLED are the actions that will be run. A feature is
  15 #   enabled by default, in order to change this behaviour use the
  16 #   AX_CONFIG_FEATURE_DEFAULT_ENABLED and AX_CONFIG_FEATURE_DEFAULT_DISABLED
  17 #   macros.
  18 #
  19 #   A simple example:
  20 #
  21 #     AX_CONFIG_FEATURE_DEFAULT_ENABLED
  22 #     AX_CONFIG_FEATURE(feature_xxxxx, [turns on/off XXXXX support],
  23 #                       HAVE_XXXXX, [Define if you want XXXXX support])
  24 #
  25 #     ...
  26 #
  27 #     AX_CONFIG_FEATURE_DEFAULT_DISABLED
  28 #     AX_CONFIG_FEATURE(feature_yyyyy, [turns on/off YYYYY support],
  29 #                       HAVE_YYYYY, [Define if you want YYYYY support],
  30 #                       [enable_yyyyy="yes"], [enable_yyyyy="no"])
  31 #     AM_CONDITIONAL(YYYYY, [test "$enable_yyyyy" = "yes"])
  32 #
  33 #     AX_CONFIG_FEATURE_DEFAULT_ENABLED
  34 #     AX_CONFIG_FEATURE(...)
  35 #
  36 #     ...
  37 #
  38 #   If you have lot of features and you want a verbose dumping of each user
  39 #   selection use AX_CONFIG_FEATURE_VERBOSE. Use AX_CONFIG_FEATURE_SILENT in
  40 #   order to remove a previously AX_CONFIG_FEATURE_VERBOSE. By default
  41 #   features are silent.
  42 #
  43 #   Use AX_CONFIG_FEATURE_ENABLE or AX_CONFIG_FEATURE_DISABLE in order to
  44 #   enable or disable a specific feature.
  45 #
  46 #   Another simple example:
  47 #
  48 #     AS_IF([some_test_here],[AX_CONFIG_FEATURE_ENABLE(feature_xxxxx)],[])
  49 #
  50 #     AX_CONFIG_FEATURE(feature_xxxxx, [turns on/off XXXXX support],
  51 #                       HAVE_XXXXX, [Define if you want XXXXX support])
  52 #     AX_CONFIG_FEATURE(feature_yyyyy, [turns on/off YYYYY support],
  53 #                       HAVE_YYYYY, [Define if you want YYYYY support],
  54 #                       [enable_yyyyy="yes"], [enable_yyyyy="no"])
  55 #
  56 #     ...
  57 #
  58 #   NOTE: AX_CONFIG_FEATURE_ENABLE() must be placed first of the relative
  59 #   AX_CONFIG_FEATURE() macro ...
  60 #
  61 # LICENSE
  62 #
  63 #   Copyright (c) 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net>
  64 #
  65 #   This program is free software; you can redistribute it and/or modify it
  66 #   under the terms of the GNU General Public License as published by the
  67 #   Free Software Foundation; either version 2 of the License, or (at your
  68 #   option) any later version.
  69 #
  70 #   This program is distributed in the hope that it will be useful, but
  71 #   WITHOUT ANY WARRANTY; without even the implied warranty of
  72 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
  73 #   Public License for more details.
  74 #
  75 #   You should have received a copy of the GNU General Public License along
  76 #   with this program. If not, see <http://www.gnu.org/licenses/>.
  77 #
  78 #   As a special exception, the respective Autoconf Macro's copyright owner
  79 #   gives unlimited permission to copy, distribute and modify the configure
  80 #   scripts that are the output of Autoconf when processing the Macro. You
  81 #   need not follow the terms of the GNU General Public License when using
  82 #   or distributing such scripts, even though portions of the text of the
  83 #   Macro appear in them. The GNU General Public License (GPL) does govern
  84 #   all other use of the material that constitutes the Autoconf Macro.
  85 #
  86 #   This special exception to the GPL applies to versions of the Autoconf
  87 #   Macro released by the Autoconf Archive. When you make and distribute a
  88 #   modified version of the Autoconf Macro, you may extend this special
  89 #   exception to the GPL to apply to your modified version as well.
  90
  91 #serial 10
  92
  93 AC_DEFUN([AX_CONFIG_FEATURE],[ dnl
  94 m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
  95
  96 AC_ARG_ENABLE([$1],AS_HELP_STRING([--enable-$1],[$2]),[
  97 case "${enableval}" in
  98    yes)
  99      ax_config_feature_[]FEATURE[]="yes"
 100      ;;
 101    no)
 102      ax_config_feature_[]FEATURE[]="no"
 103      ;;
 104    *)
 105      AC_MSG_ERROR([bad value ${enableval} for feature --$1])
 106      ;;
 107 esac
 108 ])
 109
 110 AS_IF([test "$ax_config_feature_[]FEATURE[]" = yes],[ dnl
 111   AC_DEFINE([$3])
 112   $5
 113   AS_IF([test "$ax_config_feature_verbose" = yes],[ dnl
 114     AC_MSG_NOTICE([Feature $1 is enabled])
 115   ])
 116 ],[ dnl
 117   $6
 118   AS_IF([test "$ax_config_feature_verbose" = yes],[ dnl
 119     AC_MSG_NOTICE([Feature $1 is disabled])
 120   ])
 121 ])
 122
 123 AH_TEMPLATE([$3],[$4])
 124
 125 m4_popdef([FEATURE])dnl
 126 ])
 127
 128 dnl Feature global
 129 AC_DEFUN([AX_CONFIG_FEATURE_VERBOSE],[ dnl
 130   ax_config_feature_verbose=yes
 131 ])
 132
 133 dnl Feature global
 134 AC_DEFUN([AX_CONFIG_FEATURE_SILENT],[ dnl
 135   ax_config_feature_verbose=no
 136 ])
 137
 138 dnl Feature specific
 139 AC_DEFUN([AX_CONFIG_FEATURE_DEFAULT_ENABLED], [
 140   ax_config_feature_[]FEATURE[]_default=yes
 141 ])
 142
 143 dnl Feature specific
 144 AC_DEFUN([AX_CONFIG_FEATURE_DEFAULT_DISABLED], [
 145   ax_config_feature_[]FEATURE[]_default=no
 146 ])
 147
 148 dnl Feature specific
 149 AC_DEFUN([AX_CONFIG_FEATURE_ENABLE],[ dnl
 150   ax_config_feature_[]patsubst([$1], -, _)[]=yes
 151 ])
 152
 153 dnl Feature specific
 154 AC_DEFUN([AX_CONFIG_FEATURE_DISABLE],[ dnl
 155   ax_config_feature_[]patsubst([$1], -, _)[]=no
 156 ])
 157