cmake: define BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT for Boost.Asio users

see also https://www.boost.org/doc/libs/1_74_0/doc/html/boost_asio/std_executors.html#boost_asio.std_executors.polymorphic_i_o_executor we could use `asio::any_io_executor` later on though for better performance. also, define CMP0093, so FindBoost reports Boost_VERSION in x.y.z format. it is simpler to use `VERSION_GREATER_EQUAL` to compare its version with 1.74 instead of its C macro version ("107000"). Signed-off-by: Kefu Chai <kchai@redhat.com>
ceph · Nov 24, 2020 · 3d70821 · 3d70821
1 parent cf18f7e
commit 3d70821
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diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -14,7 +14,8 @@ foreach(policy
     CMP0056
     CMP0065
     CMP0074
-    CMP0075)
+    CMP0075
+    CMP0093)
   if(POLICY ${policy})
     cmake_policy(SET ${policy} NEW)
   endif()

diff --git a/src/librbd/CMakeLists.txt b/src/librbd/CMakeLists.txt
@@ -1,3 +1,7 @@
+if(Boost_VERSION VERSION_GREATER_EQUAL 1.74)
+  add_definitions(-DBOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT)
+endif()
+
 set(librbd_types_srcs
   journal/Types.cc
   mirroring_watcher/Types.cc