cmake: promote uring package search to top-level

For use by multiple projects, rocksdb in particular.

Signed-off-by: Patrick Donnelly <[email protected]>

Author: batrick

CMakeLists.txt

@@ -256,6 +256,15 @@ set(HAVE_LIBURING ${WITH_LIBURING})
 CMAKE_DEPENDENT_OPTION(WITH_SYSTEM_LIBURING "Require and build with system liburing" OFF
   "HAVE_LIBAIO;WITH_BLUESTORE" OFF)
 
+if(WITH_LIBURING)
+  if(WITH_SYSTEM_LIBURING)
+    find_package(uring REQUIRED)
+  else()
+    include(Builduring)
+    build_uring()
+  endif()
+endif()
+
 CMAKE_DEPENDENT_OPTION(WITH_BLUESTORE_PMEM "Enable PMDK libraries" OFF
   "WITH_BLUESTORE" OFF)
 if(WITH_BLUESTORE_PMEM)

src/blk/CMakeLists.txt

@@ -57,11 +57,5 @@ if(WITH_EVENTTRACE)
 endif()
 
 if(WITH_LIBURING)
-  if(WITH_SYSTEM_LIBURING)
-    find_package(uring REQUIRED)
-  else()
-    include(Builduring)
-    build_uring()
-  endif()
   target_link_libraries(blk PRIVATE uring::uring)
 endif()