1*fc4f4269Schristos# =========================================================================== 2*fc4f4269Schristos# http://www.gnu.org/software/autoconf-archive/ax_check_define.html 3*fc4f4269Schristos# =========================================================================== 4*fc4f4269Schristos# 5*fc4f4269Schristos# SYNOPSIS 6*fc4f4269Schristos# 7*fc4f4269Schristos# AC_CHECK_DEFINE([symbol], [ACTION-IF-FOUND], [ACTION-IF-NOT]) 8*fc4f4269Schristos# AX_CHECK_DEFINE([includes],[symbol], [ACTION-IF-FOUND], [ACTION-IF-NOT]) 9*fc4f4269Schristos# 10*fc4f4269Schristos# DESCRIPTION 11*fc4f4269Schristos# 12*fc4f4269Schristos# Complements AC_CHECK_FUNC but it does not check for a function but for a 13*fc4f4269Schristos# define to exist. Consider a usage like: 14*fc4f4269Schristos# 15*fc4f4269Schristos# AC_CHECK_DEFINE(__STRICT_ANSI__, CFLAGS="$CFLAGS -D_XOPEN_SOURCE=500") 16*fc4f4269Schristos# 17*fc4f4269Schristos# LICENSE 18*fc4f4269Schristos# 19*fc4f4269Schristos# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de> 20*fc4f4269Schristos# 21*fc4f4269Schristos# This program is free software; you can redistribute it and/or modify it 22*fc4f4269Schristos# under the terms of the GNU General Public License as published by the 23*fc4f4269Schristos# Free Software Foundation; either version 3 of the License, or (at your 24*fc4f4269Schristos# option) any later version. 25*fc4f4269Schristos# 26*fc4f4269Schristos# This program is distributed in the hope that it will be useful, but 27*fc4f4269Schristos# WITHOUT ANY WARRANTY; without even the implied warranty of 28*fc4f4269Schristos# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 29*fc4f4269Schristos# Public License for more details. 30*fc4f4269Schristos# 31*fc4f4269Schristos# You should have received a copy of the GNU General Public License along 32*fc4f4269Schristos# with this program. If not, see <http://www.gnu.org/licenses/>. 33*fc4f4269Schristos# 34*fc4f4269Schristos# As a special exception, the respective Autoconf Macro's copyright owner 35*fc4f4269Schristos# gives unlimited permission to copy, distribute and modify the configure 36*fc4f4269Schristos# scripts that are the output of Autoconf when processing the Macro. You 37*fc4f4269Schristos# need not follow the terms of the GNU General Public License when using 38*fc4f4269Schristos# or distributing such scripts, even though portions of the text of the 39*fc4f4269Schristos# Macro appear in them. The GNU General Public License (GPL) does govern 40*fc4f4269Schristos# all other use of the material that constitutes the Autoconf Macro. 41*fc4f4269Schristos# 42*fc4f4269Schristos# This special exception to the GPL applies to versions of the Autoconf 43*fc4f4269Schristos# Macro released by the Autoconf Archive. When you make and distribute a 44*fc4f4269Schristos# modified version of the Autoconf Macro, you may extend this special 45*fc4f4269Schristos# exception to the GPL to apply to your modified version as well. 46*fc4f4269Schristos 47*fc4f4269Schristos#serial 8 48*fc4f4269Schristos 49*fc4f4269SchristosAU_ALIAS([AC_CHECK_DEFINED], [AC_CHECK_DEFINE]) 50*fc4f4269SchristosAC_DEFUN([AC_CHECK_DEFINE],[ 51*fc4f4269SchristosAS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$1])dnl 52*fc4f4269SchristosAC_CACHE_CHECK([for $1 defined], ac_var, 53*fc4f4269SchristosAC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[ 54*fc4f4269Schristos #ifdef $1 55*fc4f4269Schristos int ok; 56*fc4f4269Schristos #else 57*fc4f4269Schristos choke me 58*fc4f4269Schristos #endif 59*fc4f4269Schristos]])],[AS_VAR_SET(ac_var, yes)],[AS_VAR_SET(ac_var, no)])) 60*fc4f4269SchristosAS_IF([test AS_VAR_GET(ac_var) != "no"], [$2], [$3])dnl 61*fc4f4269SchristosAS_VAR_POPDEF([ac_var])dnl 62*fc4f4269Schristos]) 63*fc4f4269Schristos 64*fc4f4269SchristosAU_ALIAS([AX_CHECK_DEFINED], [AX_CHECK_DEFINE]) 65*fc4f4269SchristosAC_DEFUN([AX_CHECK_DEFINE],[ 66*fc4f4269SchristosAS_VAR_PUSHDEF([ac_var],[ac_cv_defined_$2_$1])dnl 67*fc4f4269SchristosAC_CACHE_CHECK([for $2 defined in $1], ac_var, 68*fc4f4269SchristosAC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <$1>]], [[ 69*fc4f4269Schristos #ifdef $2 70*fc4f4269Schristos int ok; 71*fc4f4269Schristos #else 72*fc4f4269Schristos choke me 73*fc4f4269Schristos #endif 74*fc4f4269Schristos]])],[AS_VAR_SET(ac_var, yes)],[AS_VAR_SET(ac_var, no)])) 75*fc4f4269SchristosAS_IF([test AS_VAR_GET(ac_var) != "no"], [$3], [$4])dnl 76*fc4f4269SchristosAS_VAR_POPDEF([ac_var])dnl 77*fc4f4269Schristos]) 78*fc4f4269Schristos 79*fc4f4269SchristosAC_DEFUN([AX_CHECK_FUNC], 80*fc4f4269Schristos[AS_VAR_PUSHDEF([ac_var], [ac_cv_func_$2])dnl 81*fc4f4269SchristosAC_CACHE_CHECK([for $2], ac_var, 82*fc4f4269Schristosdnl AC_LANG_FUNC_LINK_TRY 83*fc4f4269Schristos[AC_LINK_IFELSE([AC_LANG_PROGRAM([$1 84*fc4f4269Schristos #undef $2 85*fc4f4269Schristos char $2 ();],[ 86*fc4f4269Schristos char (*f) () = $2; 87*fc4f4269Schristos return f != $2; ])], 88*fc4f4269Schristos [AS_VAR_SET(ac_var, yes)], 89*fc4f4269Schristos [AS_VAR_SET(ac_var, no)])]) 90*fc4f4269SchristosAS_IF([test AS_VAR_GET(ac_var) = yes], [$3], [$4])dnl 91*fc4f4269SchristosAS_VAR_POPDEF([ac_var])dnl 92*fc4f4269Schristos])# AC_CHECK_FUNC 93