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# Setup our dependency on Abseil.
if(protobuf_BUILD_TESTS)
# Tell Abseil to build test-only helpers.
set(ABSL_BUILD_TEST_HELPERS ON)
# We depend on googletest too, so just tell Abseil to use the same one we've
# already setup.
set(ABSL_USE_EXTERNAL_GOOGLETEST ON)
set(ABSL_FIND_GOOGLETEST OFF)
endif()
if(TARGET absl::strings)
# If Abseil is included already, skip including it.
# (https://github.com/protocolbuffers/protobuf/issues/10435)
elseif(protobuf_ABSL_PROVIDER STREQUAL "module")
if(NOT ABSL_ROOT_DIR)
set(ABSL_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/abseil-cpp)
endif()
if(EXISTS "${ABSL_ROOT_DIR}/CMakeLists.txt")
if(protobuf_INSTALL)
# When protobuf_INSTALL is enabled and Abseil will be built as a module,
# Abseil will be installed along with protobuf for convenience.
set(ABSL_ENABLE_INSTALL ON)
endif()
add_subdirectory(${ABSL_ROOT_DIR} third_party/abseil-cpp)
else()
message(WARNING "protobuf_ABSL_PROVIDER is \"module\" but ABSL_ROOT_DIR is wrong")
endif()
if(protobuf_INSTALL AND NOT _protobuf_INSTALL_SUPPORTED_FROM_MODULE)
message(WARNING "protobuf_INSTALL will be forced to FALSE because protobuf_ABSL_PROVIDER is \"module\" and CMake version (${CMAKE_VERSION}) is less than 3.13.")
set(protobuf_INSTALL FALSE)
endif()
elseif(protobuf_ABSL_PROVIDER STREQUAL "package")
# Use "CONFIG" as there is no built-in cmake module for absl.
find_package(absl REQUIRED CONFIG)
endif()
set(_protobuf_FIND_ABSL "if(NOT TARGET absl::strings)\n find_package(absl CONFIG)\nendif()")
if (BUILD_SHARED_LIBS AND MSVC)
# On MSVC Abseil is bundled into a single DLL.
# This condition is necessary as of abseil 20230125.3 when abseil is consumed via add_subdirectory,
# the abseil_dll target is named abseil_dll, while if abseil is consumed via find_package, the target
# is called absl::abseil_dll
# Once https://github.com/abseil/abseil-cpp/pull/1466 is merged and released in the minimum version of
# abseil required by protobuf, it is possible to always link absl::abseil_dll and absl::abseil_test_dll
# and remove the if
if(protobuf_ABSL_PROVIDER STREQUAL "package")
set(protobuf_ABSL_USED_TARGETS absl::abseil_dll)
set(protobuf_ABSL_USED_TEST_TARGETS absl::abseil_test_dll)
else()
set(protobuf_ABSL_USED_TARGETS abseil_dll)
set(protobuf_ABSL_USED_TEST_TARGETS abseil_test_dll)
endif()
else()
set(protobuf_ABSL_USED_TARGETS
absl::absl_check
absl::absl_log
absl::algorithm
absl::base
absl::bind_front
absl::bits
absl::btree
absl::cleanup
absl::cord
absl::core_headers
absl::debugging
absl::die_if_null
absl::dynamic_annotations
absl::flags
absl::flat_hash_map
absl::flat_hash_set
absl::function_ref
absl::hash
absl::layout
absl::log_initialize
absl::log_severity
absl::memory
absl::node_hash_map
absl::node_hash_set
absl::optional
absl::span
absl::status
absl::statusor
absl::strings
absl::synchronization
absl::time
absl::type_traits
absl::utility
absl::variant
)
set(protobuf_ABSL_USED_TEST_TARGETS
absl::scoped_mock_log
)
endif ()
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