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dnl @synopsis AC_CXX_HAVE_BOOLdnldnl If the compiler recognizes bool as a separate built-in type, definednl HAVE_BOOL. Note that a typedef is not a separate type since youdnl cannot overload a function such that it accepts either the basicdnl type or the typedef.dnldnl @category Cxxdnl @author Todd Veldhuizendnl @author Luc Maisonobe <luc@spaceroots.org>dnl @version 2004-02-04dnl @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])
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