commit 00c1189961260e9da88df344a2d37d057f3be024
author Hao Chen <chenhaosjtuacm@google.com> Mon May 04 13:17:43 2020 -0700
committer Hao Chen <chenhaosjtuacm@google.com> Mon May 04 13:17:43 2020 -0700
tree da517a340972a23931c1c45795dc285d46bfee7e
parent 42c923980277bc2315890b4b8a60239553722e46

CMake: Give a binary dir to cares library

So that we can add the cares source from outside of the grpc root.

Bug: 155491613
Test: build
Change-Id: Ic1464afdf609513586602621510a5e7e894f9613

cmake/cares.cmake

diff --git a/cmake/cares.cmake b/cmake/cares.cmake
index 3d4a0ca..bd57c45 100644
--- a/cmake/cares.cmake
+++ b/cmake/cares.cmake
@@ -18,7 +18,7 @@
   endif()
   set(CARES_SHARED OFF CACHE BOOL "disable shared library")
   set(CARES_STATIC ON CACHE BOOL "link cares statically")
-  add_subdirectory(third_party/cares/cares)
+  add_subdirectory(${CARES_ROOT_DIR} third_party/cares/cares)
 
   if(TARGET c-ares)
     set(_gRPC_CARES_LIBRARIES c-ares)