--- rc-1.7.4/configure.ac	2015-05-16 22:23:26.000000000 +0200
+++ rc-1.7.4/configure.ac	2026-10-18 14:18:18.738313637 +0200
@@ -46,7 +46,7 @@ dnl produces interruptible system calls.
 case "$ac_cv_func_sigaction" in
 no) AC_SYS_RESTARTABLE_SYSCALLS ;;
 esac
-AM_CONDITIONAL(AMC_RESTART, test "$ac_cv_sys_restartable_syscalls" = yes)
+AM_CONDITIONAL(AMC_RESTART, test "$ac_cv_func_sigaction" != yes && test "$ac_cv_sys_restartable_syscalls" = yes)
 
 RC_FUNC_GETGROUPS