From f38b1526f8981698cdd512694cd65d75073db60f Mon Sep 17 00:00:00 2001
From: Jan Tattermusch <jtattermusch@google.com>
Date: Tue, 19 Dec 2017 14:05:41 -0800
Subject: simplify top level CMakeLists.txt

---
 cmake/zlib.cmake | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 cmake/zlib.cmake

(limited to 'cmake/zlib.cmake')

diff --git a/cmake/zlib.cmake b/cmake/zlib.cmake
new file mode 100644
index 0000000000..16cd9e66d5
--- /dev/null
+++ b/cmake/zlib.cmake
@@ -0,0 +1,39 @@
+# Copyright 2017 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+if("${gRPC_ZLIB_PROVIDER}" STREQUAL "module")
+  if(NOT ZLIB_ROOT_DIR)
+    set(ZLIB_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/zlib)
+  endif()
+  set(ZLIB_INCLUDE_DIR "${ZLIB_ROOT_DIR}")
+  if(EXISTS "${ZLIB_ROOT_DIR}/CMakeLists.txt")
+      # TODO(jtattermusch): workaround for https://github.com/madler/zlib/issues/218
+      include_directories(${ZLIB_INCLUDE_DIR})
+
+      add_subdirectory(${ZLIB_ROOT_DIR} third_party/zlib)
+      if(TARGET zlibstatic)
+          set(_gRPC_ZLIB_LIBRARIES zlibstatic)
+      endif()
+  else()
+      message(WARNING "gRPC_ZLIB_PROVIDER is \"module\" but ZLIB_ROOT_DIR is wrong")
+  endif()
+  if(gRPC_INSTALL)
+    message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_ZLIB_PROVIDER is \"module\"")
+    set(gRPC_INSTALL FALSE)
+  endif()
+elseif("${gRPC_ZLIB_PROVIDER}" STREQUAL "package")
+  find_package(ZLIB REQUIRED)
+  set(_gRPC_ZLIB_LIBRARIES ${ZLIB_LIBRARIES})
+  set(_gRPC_FIND_ZLIB "if(NOT ZLIB_FOUND)\n  find_package(ZLIB)\nendif()")
+endif()
-- 
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