Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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99 lines
2.9 KiB
99 lines
2.9 KiB
# Setup our dependency on Abseil. |
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if(protobuf_BUILD_TESTS) |
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# Tell Abseil to build test-only helpers. |
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set(ABSL_BUILD_TEST_HELPERS ON) |
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# We depend on googletest too, so just tell Abseil to use the same one we've |
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# already setup. |
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set(ABSL_USE_EXTERNAL_GOOGLETEST ON) |
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set(ABSL_FIND_GOOGLETEST OFF) |
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endif() |
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if (NOT TARGET absl::strings) |
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if (NOT protobuf_FORCE_FETCH_DEPENDENCIES) |
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# Use "CONFIG" as there is no built-in cmake module for absl. |
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find_package(absl CONFIG) |
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endif() |
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# Fallback to fetching Abseil from github if it's not found locally. |
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if (NOT absl_FOUND AND NOT protobuf_LOCAL_DEPENDENCIES_ONLY) |
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include(${protobuf_SOURCE_DIR}/cmake/dependencies.cmake) |
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message(STATUS "Fallback to downloading Abseil ${abseil-cpp-version} from GitHub") |
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include(FetchContent) |
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FetchContent_Declare( |
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absl |
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GIT_REPOSITORY "https://github.com/abseil/abseil-cpp.git" |
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GIT_TAG "${abseil-cpp-version}" |
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) |
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if (protobuf_INSTALL) |
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# When protobuf_INSTALL is enabled and Abseil will be built as a module, |
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# Abseil will be installed along with protobuf for convenience. |
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set(ABSL_ENABLE_INSTALL ON) |
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endif() |
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FetchContent_MakeAvailable(absl) |
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endif() |
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endif() |
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if (NOT TARGET absl::strings) |
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message(FATAL_ERROR "Cannot find abseil-cpp dependency that's needed to build protobuf.\n") |
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endif() |
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set(_protobuf_FIND_ABSL "if(NOT TARGET absl::strings)\n find_package(absl CONFIG)\nendif()") |
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if (BUILD_SHARED_LIBS AND MSVC) |
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# On MSVC Abseil is bundled into a single DLL. |
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# This condition is necessary as of abseil 20230125.3 when abseil is consumed |
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# via add_subdirectory, the abseil_dll target is named abseil_dll, while if |
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# abseil is consumed via find_package, the target is called absl::abseil_dll |
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# Once https://github.com/abseil/abseil-cpp/pull/1466 is merged and released |
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# in the minimum version of abseil required by protobuf, it is possible to |
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# always link absl::abseil_dll and absl::abseil_test_dll and remove the if |
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set(protobuf_ABSL_USED_TARGETS absl::abseil_dll) |
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set(protobuf_ABSL_USED_TEST_TARGETS absl::abseil_test_dll) |
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else() |
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set(protobuf_ABSL_USED_TARGETS |
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absl::absl_check |
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absl::absl_log |
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absl::algorithm |
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absl::base |
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absl::bind_front |
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absl::bits |
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absl::btree |
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absl::cleanup |
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absl::cord |
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absl::core_headers |
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absl::debugging |
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absl::die_if_null |
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absl::dynamic_annotations |
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absl::flags |
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absl::flat_hash_map |
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absl::flat_hash_set |
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absl::function_ref |
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absl::hash |
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absl::if_constexpr |
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absl::layout |
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absl::log_initialize |
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absl::log_globals |
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absl::log_severity |
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absl::memory |
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absl::node_hash_map |
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absl::node_hash_set |
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absl::optional |
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absl::random_distributions |
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absl::random_random |
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absl::span |
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absl::status |
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absl::statusor |
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absl::strings |
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absl::synchronization |
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absl::time |
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absl::type_traits |
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absl::utility |
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absl::variant |
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) |
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set(protobuf_ABSL_USED_TEST_TARGETS |
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absl::scoped_mock_log |
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) |
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endif ()
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