BUILD: ot: emitted deprecation warning at build time

Warn at Makefile parse time that the opentracing filter was deprecated
in haproxy 3.3 and will be removed in 3.5, complementing the runtime
warning emitted at filter init.

diff --git a/Makefile b/Makefile
index 624d58e062f8c3d8ff328cc567a89f1ab64ea9f1..ebfaff0a42a9a28e3728d7084ee346412458b0e2 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -865,6 +865,7 @@ ifneq ($(USE_LINUX_CAP:0=),)
 endif
 
 ifneq ($(USE_OT:0=),)
+  $(call warning, The opentracing filter was deprecated in haproxy 3.3 and will be removed in 3.5.)
   include addons/ot/Makefile
 endif