simplify top level CMakeLists.txt
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 49eb38f..bd5b676 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -102,183 +102,12 @@
set(_gRPC_PROTOBUF_LIBRARY_NAME "libprotobuf")
endif()
-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 ${ZLIB_LIBRARIES})
- set(_gRPC_FIND_ZLIB "if(NOT ZLIB_FOUND)\n find_package(ZLIB)\nendif()")
-endif()
-
-if("${gRPC_CARES_PROVIDER}" STREQUAL "module")
- if(NOT CARES_ROOT_DIR)
- set(CARES_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares/cares)
- endif()
- set(CARES_SHARED OFF CACHE BOOL "disable shared library")
- set(CARES_STATIC ON CACHE BOOL "link cares statically")
- set(CARES_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/third_party/cares/cares")
- add_subdirectory(third_party/cares/cares)
- if(TARGET c-ares)
- set(_gRPC_CARES_LIBRARIES c-ares)
- endif()
- if(gRPC_INSTALL)
- message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_CARES_PROVIDER is \"module\"")
- set(gRPC_INSTALL FALSE)
- endif()
-elseif("${gRPC_CARES_PROVIDER}" STREQUAL "package")
- find_package(c-ares REQUIRED CONFIG)
- if(TARGET c-ares::cares)
- set(_gRPC_CARES_LIBRARIES c-ares::cares)
- endif()
- set(_gRPC_FIND_CARES "if(NOT c-ares_FOUND)\n find_package(c-ares CONFIG)\nendif()")
-endif()
-
-if("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "module")
- # Building the protobuf tests require gmock what is not part of a standard protobuf checkout.
- # Disable them unless they are explicitly requested from the cmake command line (when we assume
- # gmock is downloaded to the right location inside protobuf).
- if(NOT protobuf_BUILD_TESTS)
- set(protobuf_BUILD_TESTS OFF CACHE BOOL "Build protobuf tests")
- endif()
- # Disable building protobuf with zlib. Building protobuf with zlib breaks
- # the build if zlib is not installed on the system.
- if(NOT protobuf_WITH_ZLIB)
- set(protobuf_WITH_ZLIB OFF CACHE BOOL "Build protobuf with zlib.")
- endif()
- if(NOT PROTOBUF_ROOT_DIR)
- set(PROTOBUF_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/protobuf)
- endif()
- set(PROTOBUF_WELLKNOWN_IMPORT_DIR ${PROTOBUF_ROOT_DIR}/src)
- if(EXISTS "${PROTOBUF_ROOT_DIR}/cmake/CMakeLists.txt")
- set(protobuf_MSVC_STATIC_RUNTIME OFF CACHE BOOL "Link static runtime libraries")
- add_subdirectory(${PROTOBUF_ROOT_DIR}/cmake third_party/protobuf)
- if(TARGET ${_gRPC_PROTOBUF_LIBRARY_NAME})
- set(_gRPC_PROTOBUF_LIBRARIES ${_gRPC_PROTOBUF_LIBRARY_NAME})
- endif()
- if(TARGET libprotoc)
- set(_gRPC_PROTOBUF_PROTOC_LIBRARIES libprotoc)
- endif()
- if(TARGET protoc)
- set(_gRPC_PROTOBUF_PROTOC protoc)
- set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protoc>)
- endif()
- else()
- message(WARNING "gRPC_PROTOBUF_PROVIDER is \"module\" but PROTOBUF_ROOT_DIR is wrong")
- endif()
- if(gRPC_INSTALL)
- message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_PROTOBUF_PROVIDER is \"module\"")
- set(gRPC_INSTALL FALSE)
- endif()
-elseif("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "package")
- find_package(Protobuf REQUIRED ${gRPC_PROTOBUF_PACKAGE_TYPE})
- if(Protobuf_FOUND OR PROTOBUF_FOUND)
- if(TARGET protobuf::${_gRPC_PROTOBUF_LIBRARY_NAME})
- set(_gRPC_PROTOBUF_LIBRARIES protobuf::${_gRPC_PROTOBUF_LIBRARY_NAME})
- else()
- set(_gRPC_PROTOBUF_LIBRARIES ${PROTOBUF_LIBRARIES})
- endif()
- if(TARGET protobuf::libprotoc)
- set(_gRPC_PROTOBUF_PROTOC_LIBRARIES protobuf::libprotoc)
- else()
- set(_gRPC_PROTOBUF_PROTOC_LIBRARIES ${PROTOBUF_PROTOC_LIBRARIES})
- endif()
- if(TARGET protobuf::protoc)
- set(_gRPC_PROTOBUF_PROTOC protobuf::protoc)
- set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protobuf::protoc>)
- else()
- set(_gRPC_PROTOBUF_PROTOC ${PROTOBUF_PROTOC_EXECUTABLE})
- set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE ${PROTOBUF_PROTOC_EXECUTABLE})
- endif()
- set(_gRPC_FIND_PROTOBUF "if(NOT Protobuf_FOUND AND NOT PROTOBUF_FOUND)\n find_package(Protobuf ${gRPC_PROTOBUF_PACKAGE_TYPE})\nendif()")
- endif()
- if(PROTOBUF_FOUND)
- include_directories(${PROTOBUF_INCLUDE_DIRS})
- endif()
- set(PROTOBUF_WELLKNOWN_IMPORT_DIR /usr/local/include)
-endif()
-
-if("${gRPC_SSL_PROVIDER}" STREQUAL "module")
- if(NOT BORINGSSL_ROOT_DIR)
- set(BORINGSSL_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/boringssl)
- endif()
- if(EXISTS "${BORINGSSL_ROOT_DIR}/CMakeLists.txt")
- set(OPENSSL_NO_ASM ON) # make boringssl buildable with Visual Studio
- add_subdirectory(${BORINGSSL_ROOT_DIR} third_party/boringssl)
- if(TARGET ssl)
- set(_gRPC_SSL_LIBRARIES ssl)
- set(_gRPC_SSL_INCLUDE_DIR ${BORINGSSL_ROOT_DIR}/include)
- endif()
- else()
- message(WARNING "gRPC_SSL_PROVIDER is \"module\" but BORINGSSL_ROOT_DIR is wrong")
- endif()
- if(gRPC_INSTALL)
- message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_SSL_PROVIDER is \"module\"")
- set(gRPC_INSTALL FALSE)
- endif()
-elseif("${gRPC_SSL_PROVIDER}" STREQUAL "package")
- find_package(OpenSSL REQUIRED)
- set(_gRPC_SSL_LIBRARIES ${OPENSSL_LIBRARIES})
- set(_gRPC_SSL_INCLUDE_DIR ${OPENSSL_INCLUDE_DIR})
- set(_gRPC_FIND_SSL "if(NOT OPENSSL_FOUND)\n find_package(OpenSSL)\nendif()")
-endif()
-
-if("${gRPC_GFLAGS_PROVIDER}" STREQUAL "module")
- if(NOT GFLAGS_ROOT_DIR)
- set(GFLAGS_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/gflags)
- endif()
- if(EXISTS "${GFLAGS_ROOT_DIR}/CMakeLists.txt")
- add_subdirectory(${GFLAGS_ROOT_DIR} third_party/gflags)
- if(TARGET gflags_static)
- set(_gRPC_GFLAGS_LIBRARIES gflags_static)
- endif()
- else()
- message(WARNING "gRPC_GFLAGS_PROVIDER is \"module\" but GFLAGS_ROOT_DIR is wrong")
- endif()
-elseif("${gRPC_GFLAGS_PROVIDER}" STREQUAL "package")
- find_package(gflags)
- if(TARGET gflags::gflags)
- set(_gRPC_GFLAGS_LIBRARIES gflags::gflags)
- endif()
- set(_gRPC_FIND_GFLAGS "if(NOT gflags_FOUND)\n find_package(gflags)\nendif()")
-endif()
-
-if("${gRPC_BENCHMARK_PROVIDER}" STREQUAL "module")
- if(NOT BENCHMARK_ROOT_DIR)
- set(BENCHMARK_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/benchmark)
- endif()
- if(EXISTS "${BENCHMARK_ROOT_DIR}/CMakeLists.txt")
- add_subdirectory(${BENCHMARK_ROOT_DIR} third_party/benchmark)
- if(TARGET benchmark)
- set(_gRPC_BENCHMARK_LIBRARIES benchmark)
- endif()
- else()
- message(WARNING "gRPC_BENCHMARK_PROVIDER is \"module\" but BENCHMARK_ROOT_DIR is wrong")
- endif()
-elseif("${gRPC_BENCHMARK_PROVIDER}" STREQUAL "package")
- find_package(benchmark)
- if(TARGET benchmark::benchmark)
- set(_gRPC_BENCHMARK_LIBRARIES benchmark::benchmark)
- endif()
- set(_gRPC_FIND_BENCHMARK "if(NOT benchmark_FOUND)\n find_package(benchmark)\nendif()")
-endif()
+include(cmake/zlib.cmake)
+include(cmake/cares.cmake)
+include(cmake/protobuf.cmake)
+include(cmake/ssl.cmake)
+include(cmake/gflags.cmake)
+include(cmake/benchmark.cmake)
if(NOT MSVC)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")