| # Check for stdbool.h that conforms to C99. |
| |
| # Copyright (C) 2002-2003 Free Software Foundation, Inc. |
| |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2, or (at your option) |
| # any later version. |
| |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write to the Free Software |
| # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| # USA. |
| |
| # Prepare for substituting <stdbool.h> if it is not supported. |
| |
| AC_DEFUN([AM_STDBOOL_H], |
| [ |
| AC_REQUIRE([AC_HEADER_STDBOOL]) |
| |
| # Define two additional variables used in the Makefile substitution. |
| |
| if test "$ac_cv_header_stdbool_h" = yes; then |
| STDBOOL_H='' |
| else |
| STDBOOL_H='stdbool.h' |
| fi |
| AC_SUBST([STDBOOL_H]) |
| |
| if test "$ac_cv_type__Bool" = yes; then |
| HAVE__BOOL=1 |
| else |
| HAVE__BOOL=0 |
| fi |
| AC_SUBST([HAVE__BOOL]) |
| ]) |
