From b8eb4e04497a5d51343e94465fd01b39a520c29c Mon Sep 17 00:00:00 2001
From: Gil <mcg@google.com>
Date: Thu, 28 Jun 2018 14:03:52 -0700
Subject: Add a CMake external build for c-ares (#1472)

* Add an external build for c-ares

* Use installed c-ares package configuration

* Adjust protobuf configuration to use the standard Protobuf_DIR variable.

* Have grpc depend on c-ares

* Drop UPDATE_COMMAND where it doesn't matter
---
 cmake/FindGRPC.cmake | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

(limited to 'cmake/FindGRPC.cmake')

diff --git a/cmake/FindGRPC.cmake b/cmake/FindGRPC.cmake
index 22c9655..ba8f857 100644
--- a/cmake/FindGRPC.cmake
+++ b/cmake/FindGRPC.cmake
@@ -56,20 +56,10 @@ find_package(OpenSSL REQUIRED)
 
 ## C-Ares
 
-find_library(
-  CARES_LIBRARY
-  NAMES cares
-  HINTS ${BINARY_DIR}/src/grpc-build/third_party/cares/cares/lib
-)
-if(NOT (CARES_LIBRARY STREQUAL "CARES_LIBRARY-NOTFOUND"))
-  if (NOT TARGET c-ares::ares)
-    add_library(c-ares::ares UNKNOWN IMPORTED)
-    set_target_properties(
-      c-ares::ares PROPERTIES
-      IMPORTED_LOCATION ${CARES_LIBRARY}
-    )
-  endif()
+if(NOT c-ares_DIR)
+  set(c-ares_DIR ${FIREBASE_INSTALL_DIR}/lib/cmake/c-ares)
 endif()
+find_package(c-ares CONFIG REQUIRED)
 
 
 ## GRPC
@@ -124,7 +114,7 @@ if(GRPC_FOUND)
   if (NOT TARGET grpc::grpc)
     set(
       GRPC_LINK_LIBRARIES
-      c-ares::ares
+      c-ares::cares
       grpc::gpr
       OpenSSL::SSL
       OpenSSL::Crypto
-- 
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