-# ARM-specific checks
-AS_CASE([$host_cpu], [arm*], [
- AC_MSG_CHECKING([for dmb instruction])
- AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
- int main()
- {
- asm volatile("dmb":::"memory");
- return 0;
- }
- ]])
- ],[
- AC_MSG_RESULT([yes])
- AC_DEFINE([CONFIG_RCU_ARM_HAVE_DMB], [1])
- ],[
- AC_MSG_RESULT([no])
- ])
-])
-