1 files changed, 39 insertions, 0 deletions
diff --git a/cmake/modules/Findc-ares.cmake b/cmake/modules/Findc-ares.cmake
new file mode 100644
index 000000000..93554ed28
--- /dev/null
+++ b/cmake/modules/Findc-ares.cmake
@@ -0,0 +1,39 @@
+find_package(PkgConfig QUIET)
+
+pkg_search_module(PC_cares
+  libcares)
+
+find_path(c-ares_INCLUDE_DIR
+  NAMES ares_dns.h
+  PATHS ${PC_cares_INCLUDE_DIRS})
+
+find_library(c-ares_LIBRARY
+  NAMES cares
+  PATHS ${PC_cares_LIBRARY_DIRS})
+
+set(c-ares_VERSION ${PC_cares_VERSION})
+
+include(FindPackageHandleStandardArgs)
+
+find_package_handle_standard_args(c-ares
+  REQUIRED_VARS
+    c-ares_INCLUDE_DIR
+    c-ares_LIBRARY
+  VERSION_VAR c-ares_VERSION)
+
+if(c-ares_FOUND)
+  if(NOT TARGET c-ares::cares)
+    add_library(c-ares::cares UNKNOWN IMPORTED GLOBAL)
+    set_target_properties(c-ares::cares PROPERTIES
+      INTERFACE_INCLUDE_DIRECTORIES "${c-ares_INCLUDE_DIR}"
+      IMPORTED_LINK_INTERFACE_LANGUAGES "C"
+      IMPORTED_LOCATION "${c-ares_LIBRARY}")
+  endif()
+
+  # to be compatible with old Seastar
+  add_library(c-ares::c-ares ALIAS c-ares::cares)
+
+  if(NOT TARGET c-ares::c-ares)
+    add_library(c-ares::c-ares ALIAS c-ares::cares)
+  endif()
+endif()