| dnl @synopsis AC_CXX_HAVE_BOOL |
| dnl |
| dnl If the compiler recognizes bool as a separate built-in type, define |
| dnl HAVE_BOOL. Note that a typedef is not a separate type since you |
| dnl cannot overload a function such that it accepts either the basic |
| dnl type or the typedef. |
| dnl |
| dnl @category Cxx |
| dnl @author Todd Veldhuizen |
| dnl @author Luc Maisonobe <luc@spaceroots.org> |
| dnl @version 2004-02-04 |
| dnl @license AllPermissive |
| |
| AC_DEFUN([AC_CXX_HAVE_BOOL], |
| [AC_CACHE_CHECK(whether the compiler recognizes bool as a built-in type, |
| ac_cv_cxx_have_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_have_bool=yes, ac_cv_cxx_have_bool=no) |
| AC_LANG_RESTORE |
| ]) |
| if test "$ac_cv_cxx_have_bool" = yes; then |
| AC_DEFINE(HAVE_BOOL,,[define if bool is a built-in type]) |
| fi |
| ]) |
