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Subject: ir-ctl: add optional copy of TEMP_FAILURE_RETRY macro (fix musl 
compile)
Author:  Peter Seiderer <[email protected]>
Date:    Mon Feb 20 17:33:44 2017 -0300

Fixes buildroot musl compile (see [1], [2]):

  ir-ctl.c:(.text+0xe01): undefined reference to `TEMP_FAILURE_RETRY'

[1] 
http://autobuild.buildroot.net/results/b8b96c7bbf2147dacac62485cbfdbcfd758271a5
[2] http://lists.busybox.net/pipermail/buildroot/2017-February/184048.html

Signed-off-by: Peter Seiderer <[email protected]>
Signed-off-by: Sean Young <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 utils/ir-ctl/ir-ctl.c | 8 ++++++++
 1 file changed, 8 insertions(+)

---

http://git.linuxtv.org/cgit.cgi/v4l-utils.git/commit/?id=38e099d8674851ddef6f371e8f7cf67acf57c59a
diff --git a/utils/ir-ctl/ir-ctl.c b/utils/ir-ctl/ir-ctl.c
index f938b4299c13..36e61b0e379e 100644
--- a/utils/ir-ctl/ir-ctl.c
+++ b/utils/ir-ctl/ir-ctl.c
@@ -44,6 +44,14 @@
 
 # define N_(string) string
 
+/* taken from glibc unistd.h */
+#ifndef TEMP_FAILURE_RETRY
+#define TEMP_FAILURE_RETRY(expression) \
+    ({ long int __result;                                                     \
+       do __result = (long int) (expression);                                 \
+       while (__result == -1L && errno == EINTR);                             \
+       __result; })
+#endif
 
 /* See drivers/media/rc/ir-lirc-codec.c line 23 */
 #define LIRCBUF_SIZE   512

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