AC_DEFUN([CC_CHECK_FUNC_BUILTIN], [
m4_pushdef([UPNAME], m4_translit([$1], [-a-z], [_A-Z]))
- AC_CACHE_CHECK([if compiler has $1 function],
+ AC_CACHE_CHECK([if compiler has $1 builtin function],
[cc_cv_have_$1],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([], [
m4_case([$1],
[cc_cv_have_$1=no])])
AS_IF([test "x$cc_cv_have_$1" = "xyes"],
- [AC_DEFINE([HAVE_]m4_defn([UPNAME]), 1, [Define this if the compiler supports $1() function])
+ [AC_DEFINE([HAVE_]m4_defn([UPNAME]), 1, [Define to 1 if compiler has $1() builtin function])
$2],
- [AS_IF([test "x$3" = "x"], [AC_MSG_ERROR([*** builtin function not found: $1()])], [$3])]
+ [AS_IF([test "x$3" = "x"], [AC_MSG_ERROR([*** builtin function not found: $1()])],
+ [AC_DEFINE([HAVE_]m4_defn([UPNAME]), 0)
+ $3])]
)
m4_popdef([UPNAME])
])