From 6df5acf970852a94b254800dc69569bd1f4c9ae8 Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Wed, 24 Oct 2018 12:28:13 +0200
Subject: lib/timer: add fallback if timer_create() not available

* add struct ul_timer as API abstraction to hide differences between
timer_create() and setitimer()

* add setitimer() detection to ./configure.ac

* add fallback code to use setitimer() if timer_create() not available
  (for example on OSX)

Addresses: https://github.com/karelzak/util-linux/issues/584
Signed-off-by: Karel Zak <kzak@redhat.com>
---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 21b04f581..e6cfd4605 100644
--- a/configure.ac
+++ b/configure.ac
@@ -558,6 +558,10 @@ AC_CHECK_FUNCS([timer_create],
 
 AC_SUBST([REALTIME_LIBS])
 
+AS_IF([test x"$have_timer" = xno], [
+       AC_CHECK_FUNCS([setitimer], [have_timer="yes"], [have_timer="no"])
+])
+
 
 AC_CHECK_LIB([rtas], [rtas_get_sysparm], [
 	RTAS_LIBS="-lrtas"
-- 
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