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dnl #
dnl # Check if we have the choose expr builtin
dnl #
AC_DEFUN([FR_HAVE_BUILTIN_CHOOSE_EXPR],
[
AC_CACHE_CHECK([for __builtin_choose_expr support in compiler], [ax_cv_cc_builtin_choose_expr],[
AC_RUN_IFELSE(
[
AC_LANG_SOURCE(
[
int main(int argc, char **argv) {
if ((argc < 0) || !argv) return 1; /* -Werror=unused-parameter */
return __builtin_choose_expr(0, 1, 0);
}
])
],
[ax_cv_cc_builtin_choose_expr=yes],
[ax_cv_cc_builtin_choose_expr=no]
)
])
if test "x$ax_cv_cc_builtin_choose_expr" = "xyes"; then
AC_DEFINE([HAVE_BUILTIN_CHOOSE_EXPR],1,[Define if the compiler supports __builtin_choose_expr])
fi
])
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