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am/enable.m4 3.07 KB
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dnl This file is part of GNU mailutils.
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dnl Copyright (C) 2002, 2005, 2007, 2009, 2010 Free Software Foundation,
dnl Inc.
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dnl
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dnl GNU Mailutils is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 3 of the License, or
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dnl (at your option) any later version.
dnl
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dnl GNU Mailutils is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
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dnl along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>.
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dnl MU_ENABLE_SUPPORT(feature, [action-if-true], [action-if-false],
Sergey Poznyakoff authored
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dnl                   [additional-cond], [default-value])
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AC_DEFUN([MU_ENABLE_SUPPORT], [
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	pushdef([mu_upcase],translit($1,[a-z+-],[A-ZX_]))
	pushdef([mu_cache_var],[mu_cv_enable_]translit($1,[+-],[x_]))
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	pushdef([mu_cond],[MU_COND_SUPPORT_]mu_upcase)
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       	ifelse([$4],,,[if test $4; then])
	  AC_ARG_ENABLE($1, 
	                AC_HELP_STRING([--disable-]$1,
		                       [disable ]$1[ support]),
	                [
	  case "${enableval}" in
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		yes) mu_cache_var=yes;;
                no)  mu_cache_var=no;;
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	        *)   AC_MSG_ERROR([bad value ${enableval} for --disable-$1]) ;;
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          esac],
                      [mu_cache_var=ifelse([$5],,yes,[$5])])
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	  if test "[$]mu_cache_var" = "yes"; then
		  ifelse([$2],,:,[$2])
 	  ifelse([$3],,,else
                 [$3])
	  fi
	ifelse([$4],,,[else
		mu_cache_var=no
        fi])
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	if test "[$]mu_cache_var" = "yes"; then
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		AC_DEFINE([ENABLE_]mu_upcase,1,[Define this if you enable $1 support])
        fi
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	AM_CONDITIONAL(mu_cond, [test "[$]mu_cache_var" = "yes"])
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	popdef([mu_cond])
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	popdef([mu_cache_var])
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	popdef([mu_upcase])
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])

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dnl MU_ENABLE_BUILD(feature, [action-if-true], [action-if-false],
dnl                 [additional-cond], [default-value])
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AC_DEFUN([MU_ENABLE_BUILD], [
	pushdef([mu_upcase],translit($1,[a-z+-],[A-ZX_]))
	pushdef([mu_cache_var],[mu_cv_enable_build_]translit($1,[+-],[x_]))
	pushdef([mu_cond],[MU_COND_]mu_upcase)

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       	ifelse([$4],,,[if test $4; then])
	  AC_ARG_ENABLE(build-$1, 
	                AC_HELP_STRING([--disable-build-]$1,
		                       [do not build ]$1),
	                [
  	  case "${enableval}" in
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		yes) mu_cache_var=yes;;
                no)  mu_cache_var=no;;
	        *)   AC_MSG_ERROR([bad value ${enableval} for --disable-$1]) ;;
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          esac],
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                      [mu_cache_var=ifelse([$5],,yes,[$5])])
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	  if test "[$]mu_cache_var" = "yes"; then
		  ifelse([$2],,:,[$2])
	  ifelse([$3],,,else
                 [$3])
	  fi
	  if test "[$]mu_cache_var" = "yes"; then
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		AC_DEFINE([MU_BUILD_]mu_upcase,1,[Define this if you build $1])
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          fi
	ifelse([$4],,,[else
		mu_cache_var=no
        fi])
	  
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	AM_CONDITIONAL(mu_cond,
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	               [test "[$]mu_cache_var" = "yes"])
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	popdef([mu_upcase])
	popdef([mu_cache_var])
	popdef([mu_cond])
])
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