PR: merge from branch BR_auto_V310 tag mergefrom_OCC_development_for_3_2_0a2_10mar06

[modules/kernel.git] / salome_adm / unix / config_files / DEPRECATED / ac_cxx_bool.m4

diff --git a/salome_adm/unix/config_files/DEPRECATED/ac_cxx_bool.m4 b/salome_adm/unix/config_files/DEPRECATED/ac_cxx_bool.m4
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+dnl  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+dnl  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS 
+dnl 
+dnl  This library is free software; you can redistribute it and/or 
+dnl  modify it under the terms of the GNU Lesser General Public 
+dnl  License as published by the Free Software Foundation; either 
+dnl  version 2.1 of the License. 
+dnl 
+dnl  This library is distributed in the hope that it will be useful, 
+dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of 
+dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
+dnl  Lesser General Public License for more details. 
+dnl 
+dnl  You should have received a copy of the GNU Lesser General Public 
+dnl  License along with this library; if not, write to the Free Software 
+dnl  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA 
+dnl 
+dnl  See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org 
+dnl
+dnl
+dnl
+dnl @synopsis AC_CXX_BOOL
+dnl
+dnl If the compiler recognizes bool as a separate built-in type,
+dnl define HAVE_BOOL. Note that a typedef is not a separate
+dnl type since you cannot overload a function such that it accepts either
+dnl the basic type or the typedef.
+dnl
+dnl @version $Id$
+dnl @author Luc Maisonobe
+dnl
+AC_DEFUN([AC_CXX_BOOL],
+[AC_CACHE_CHECK(whether the compiler recognizes bool as a built-in type,
+ac_cv_cxx_bool,
+[AC_LANG_SAVE
+ AC_LANG_CPLUSPLUS
+ AC_TRY_COMPILE([
+int f(int  x){return 1;}
+int f(char x){return 1;}
+int f(bool x){return 1;}
+],[bool b = true; return f(b);],
+ ac_cv_cxx_bool=yes, ac_cv_cxx_bool=no)
+ AC_LANG_RESTORE
+])
+if test "$ac_cv_cxx_bool" = yes; then
+  AC_DEFINE(HAVE_BOOL,,[define if bool is a built-in type])
+fi
+])