simplify top level CMakeLists.txt

1 files changed, 6 insertions, 177 deletions

diff --git a/templates/CMakeLists.txt.template b/templates/CMakeLists.txt.template
index 5ef34e47ad..8de0ccde82 100644
--- a/templates/CMakeLists.txt.template
+++ b/templates/CMakeLists.txt.template
@@ -147,183 +147,12 @@
     set(_gRPC_PROTOBUF_LIBRARY_NAME "libprotobuf")
   endif()
 
-  if("<%text>${gRPC_ZLIB_PROVIDER}</%text>" STREQUAL "module")
-    if(NOT ZLIB_ROOT_DIR)
-      set(ZLIB_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/zlib)
-    endif()
-    set(ZLIB_INCLUDE_DIR "<%text>${ZLIB_ROOT_DIR}</%text>")
-    if(EXISTS "<%text>${ZLIB_ROOT_DIR}</%text>/CMakeLists.txt")
-        # TODO(jtattermusch): workaround for https://github.com/madler/zlib/issues/218
-        include_directories(<%text>${ZLIB_INCLUDE_DIR}</%text>)
-
-        add_subdirectory(<%text>${ZLIB_ROOT_DIR}</%text> 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("<%text>${gRPC_ZLIB_PROVIDER}</%text>" STREQUAL "package")
-    find_package(ZLIB REQUIRED)
-    set(_gRPC_ZLIB_LIBRARIES <%text>${ZLIB_LIBRARIES}</%text>)
-    set(_gRPC_FIND_ZLIB "if(NOT ZLIB_FOUND)\n  find_package(ZLIB)\nendif()")
-  endif()
-
-  if("<%text>${gRPC_CARES_PROVIDER}</%text>" STREQUAL "module")
-    if(NOT CARES_ROOT_DIR)
-      set(CARES_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/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 "<%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/cares/cares")
-    add_subdirectory(third_party/cares/cares)
-    if(TARGET c-ares)
-      set(_gRPC_CARES_LIBRARIES c-ares)
-    endif()
-    if(gRPC_INSTALL)
-      message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_CARES_PROVIDER is \"module\"")
-      set(gRPC_INSTALL FALSE)
-    endif()
-  elseif("<%text>${gRPC_CARES_PROVIDER}</%text>" 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("<%text>${gRPC_PROTOBUF_PROVIDER}</%text>" STREQUAL "module")
-    # Building the protobuf tests require gmock what is not part of a standard protobuf checkout.
-    # Disable them unless they are explicitly requested from the cmake command line (when we assume
-    # gmock is downloaded to the right location inside protobuf).
-    if(NOT protobuf_BUILD_TESTS)
-      set(protobuf_BUILD_TESTS OFF CACHE BOOL "Build protobuf tests")
-    endif()
-    # Disable building protobuf with zlib. Building protobuf with zlib breaks
-    # the build if zlib is not installed on the system.
-    if(NOT protobuf_WITH_ZLIB)
-      set(protobuf_WITH_ZLIB OFF CACHE BOOL "Build protobuf with zlib.")
-    endif()
-    if(NOT PROTOBUF_ROOT_DIR)
-      set(PROTOBUF_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/protobuf)
-    endif()
-    set(PROTOBUF_WELLKNOWN_IMPORT_DIR <%text>${PROTOBUF_ROOT_DIR}</%text>/src)
-    if(EXISTS "<%text>${PROTOBUF_ROOT_DIR}</%text>/cmake/CMakeLists.txt")
-      set(protobuf_MSVC_STATIC_RUNTIME OFF CACHE BOOL "Link static runtime libraries")
-      add_subdirectory(<%text>${PROTOBUF_ROOT_DIR}</%text>/cmake third_party/protobuf)
-      if(TARGET <%text>${_gRPC_PROTOBUF_LIBRARY_NAME}</%text>)
-        set(_gRPC_PROTOBUF_LIBRARIES <%text>${_gRPC_PROTOBUF_LIBRARY_NAME}</%text>)
-      endif()
-      if(TARGET libprotoc)
-        set(_gRPC_PROTOBUF_PROTOC_LIBRARIES libprotoc)
-      endif()
-      if(TARGET protoc)
-        set(_gRPC_PROTOBUF_PROTOC protoc)
-        set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protoc>)
-      endif()
-    else()
-        message(WARNING "gRPC_PROTOBUF_PROVIDER is \"module\" but PROTOBUF_ROOT_DIR is wrong")
-    endif()
-    if(gRPC_INSTALL)
-      message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_PROTOBUF_PROVIDER is \"module\"")
-      set(gRPC_INSTALL FALSE)
-    endif()
-  elseif("<%text>${gRPC_PROTOBUF_PROVIDER}</%text>" STREQUAL "package")
-    find_package(Protobuf REQUIRED <%text>${gRPC_PROTOBUF_PACKAGE_TYPE}</%text>)
-    if(Protobuf_FOUND OR PROTOBUF_FOUND)
-      if(TARGET protobuf::<%text>${_gRPC_PROTOBUF_LIBRARY_NAME}</%text>)
-        set(_gRPC_PROTOBUF_LIBRARIES protobuf::<%text>${_gRPC_PROTOBUF_LIBRARY_NAME}</%text>)
-      else()
-        set(_gRPC_PROTOBUF_LIBRARIES <%text>${PROTOBUF_LIBRARIES}</%text>)
-      endif()
-      if(TARGET protobuf::libprotoc)
-        set(_gRPC_PROTOBUF_PROTOC_LIBRARIES protobuf::libprotoc)
-      else()
-        set(_gRPC_PROTOBUF_PROTOC_LIBRARIES <%text>${PROTOBUF_PROTOC_LIBRARIES}</%text>)
-      endif()
-      if(TARGET protobuf::protoc)
-        set(_gRPC_PROTOBUF_PROTOC protobuf::protoc)
-        set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protobuf::protoc>)
-      else()
-        set(_gRPC_PROTOBUF_PROTOC <%text>${PROTOBUF_PROTOC_EXECUTABLE}</%text>)
-        set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE <%text>${PROTOBUF_PROTOC_EXECUTABLE}</%text>)
-      endif()
-      set(_gRPC_FIND_PROTOBUF "if(NOT Protobuf_FOUND AND NOT PROTOBUF_FOUND)\n  find_package(Protobuf <%text>${gRPC_PROTOBUF_PACKAGE_TYPE}</%text>)\nendif()")
-    endif()
-    if(PROTOBUF_FOUND)
-      include_directories(<%text>${PROTOBUF_INCLUDE_DIRS}</%text>)
-    endif()
-    set(PROTOBUF_WELLKNOWN_IMPORT_DIR /usr/local/include)
-  endif()
-
-  if("<%text>${gRPC_SSL_PROVIDER}</%text>" STREQUAL "module")
-    if(NOT BORINGSSL_ROOT_DIR)
-      set(BORINGSSL_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/boringssl)
-    endif()
-    if(EXISTS "<%text>${BORINGSSL_ROOT_DIR}</%text>/CMakeLists.txt")
-      set(OPENSSL_NO_ASM ON)  # make boringssl buildable with Visual Studio
-      add_subdirectory(<%text>${BORINGSSL_ROOT_DIR}</%text> third_party/boringssl)
-      if(TARGET ssl)
-        set(_gRPC_SSL_LIBRARIES ssl)
-        set(_gRPC_SSL_INCLUDE_DIR <%text>${BORINGSSL_ROOT_DIR}</%text>/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("<%text>${gRPC_SSL_PROVIDER}</%text>" STREQUAL "package")
-    find_package(OpenSSL REQUIRED)
-    set(_gRPC_SSL_LIBRARIES <%text>${OPENSSL_LIBRARIES}</%text>)
-    set(_gRPC_SSL_INCLUDE_DIR <%text>${OPENSSL_INCLUDE_DIR}</%text>)
-    set(_gRPC_FIND_SSL "if(NOT OPENSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
-  endif()
-
-  if("<%text>${gRPC_GFLAGS_PROVIDER}</%text>" STREQUAL "module")
-    if(NOT GFLAGS_ROOT_DIR)
-      set(GFLAGS_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/gflags)
-    endif()
-    if(EXISTS "<%text>${GFLAGS_ROOT_DIR}</%text>/CMakeLists.txt")
-        add_subdirectory(<%text>${GFLAGS_ROOT_DIR}</%text> third_party/gflags)
-        if(TARGET gflags_static)
-            set(_gRPC_GFLAGS_LIBRARIES gflags_static)
-        endif()
-    else()
-        message(WARNING "gRPC_GFLAGS_PROVIDER is \"module\" but GFLAGS_ROOT_DIR is wrong")
-    endif()
-  elseif("<%text>${gRPC_GFLAGS_PROVIDER}</%text>" 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("<%text>${gRPC_BENCHMARK_PROVIDER}</%text>" STREQUAL "module")
-    if(NOT BENCHMARK_ROOT_DIR)
-      set(BENCHMARK_ROOT_DIR <%text>${CMAKE_CURRENT_SOURCE_DIR}</%text>/third_party/benchmark)
-    endif()
-    if(EXISTS "<%text>${BENCHMARK_ROOT_DIR}</%text>/CMakeLists.txt")
-        add_subdirectory(<%text>${BENCHMARK_ROOT_DIR}</%text> 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("<%text>${gRPC_BENCHMARK_PROVIDER}</%text>" 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   "<%text>${CMAKE_C_FLAGS}</%text> -std=c99")