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-rw-r--r--CMake/AbseilHelpers.cmake231
1 files changed, 161 insertions, 70 deletions
diff --git a/CMake/AbseilHelpers.cmake b/CMake/AbseilHelpers.cmake
index 28fefaa6..7571ef1b 100644
--- a/CMake/AbseilHelpers.cmake
+++ b/CMake/AbseilHelpers.cmake
@@ -16,6 +16,7 @@
include(CMakeParseArguments)
include(AbseilConfigureCopts)
+include(AbseilDll)
include(AbseilInstallDirs)
# The IDE folder for Abseil that will be used if Abseil is included in a CMake
@@ -80,98 +81,169 @@ function(absl_cc_library)
${ARGN}
)
- if(NOT ABSL_CC_LIB_TESTONLY OR ABSL_RUN_TESTS)
- if(ABSL_ENABLE_INSTALL)
- set(_NAME "${ABSL_CC_LIB_NAME}")
- else()
- set(_NAME "absl_${ABSL_CC_LIB_NAME}")
+ if(ABSL_CC_LIB_TESTONLY AND NOT ABSL_RUN_TESTS)
+ return()
+ endif()
+
+ if(ABSL_ENABLE_INSTALL)
+ set(_NAME "${ABSL_CC_LIB_NAME}")
+ else()
+ set(_NAME "absl_${ABSL_CC_LIB_NAME}")
+ endif()
+
+ # Check if this is a header-only library
+ # Note that as of February 2019, many popular OS's (for example, Ubuntu
+ # 16.04 LTS) only come with cmake 3.5 by default. For this reason, we can't
+ # use list(FILTER...)
+ set(ABSL_CC_SRCS "${ABSL_CC_LIB_SRCS}")
+ foreach(src_file IN LISTS ABSL_CC_SRCS)
+ if(${src_file} MATCHES ".*\\.(h|inc)")
+ list(REMOVE_ITEM ABSL_CC_SRCS "${src_file}")
endif()
+ endforeach()
- # Check if this is a header-only library
- # Note that as of February 2019, many popular OS's (for example, Ubuntu
- # 16.04 LTS) only come with cmake 3.5 by default. For this reason, we can't
- # use list(FILTER...)
- set(ABSL_CC_SRCS "${ABSL_CC_LIB_SRCS}")
- foreach(src_file IN LISTS ABSL_CC_SRCS)
- if(${src_file} MATCHES ".*\\.(h|inc)")
- list(REMOVE_ITEM ABSL_CC_SRCS "${src_file}")
- endif()
- endforeach()
- if("${ABSL_CC_SRCS}" STREQUAL "")
+ if("${ABSL_CC_SRCS}" STREQUAL "")
+ set(ABSL_CC_LIB_IS_INTERFACE 1)
+ else()
+ set(ABSL_CC_LIB_IS_INTERFACE 0)
+ endif()
+
+ # Determine this build target's relationship to the DLL. It's one of three things:
+ # 1. "dll" -- This target is part of the DLL
+ # 2. "dll_dep" -- This target is not part of the DLL, but depends on the DLL.
+ # Note that we assume any target not in the DLL depends on the
+ # DLL. This is not a technical necessity but a convenience
+ # which happens to be true, because nearly every target is
+ # part of the DLL.
+ # 3. "static" -- This target does not depend on the DLL and should be built
+ # statically.
+ if (${ABSL_BUILD_DLL})
+ absl_internal_dll_contains(TARGET ${_NAME} OUTPUT _in_dll)
+ if (${_in_dll})
+ # This target should be replaced by the DLL
+ set(_build_type "dll")
set(ABSL_CC_LIB_IS_INTERFACE 1)
else()
- set(ABSL_CC_LIB_IS_INTERFACE 0)
+ # Building a DLL, but this target is not part of the DLL
+ set(_build_type "dll_dep")
endif()
+ else()
+ set(_build_type "static")
+ endif()
- if(NOT ABSL_CC_LIB_IS_INTERFACE)
- # CMake creates static libraries by default. Users can specify
- # -DBUILD_SHARED_LIBS=ON during initial configuration to build shared
- # libraries instead.
- add_library(${_NAME} "")
+ if(NOT ABSL_CC_LIB_IS_INTERFACE)
+ if(${_build_type} STREQUAL "dll_dep")
+ # This target depends on the DLL. When adding dependencies to this target,
+ # any depended-on-target which is contained inside the DLL is replaced
+ # with a dependency on the DLL.
+ add_library(${_NAME} STATIC "")
target_sources(${_NAME} PRIVATE ${ABSL_CC_LIB_SRCS} ${ABSL_CC_LIB_HDRS})
- target_include_directories(${_NAME}
- PUBLIC
- "$<BUILD_INTERFACE:${ABSL_COMMON_INCLUDE_DIRS}>"
- $<INSTALL_INTERFACE:${ABSL_INSTALL_INCLUDEDIR}>
+ absl_internal_dll_targets(
+ DEPS ${ABSL_CC_LIB_DEPS}
+ OUTPUT _dll_deps
)
- target_compile_options(${_NAME}
- PRIVATE ${ABSL_CC_LIB_COPTS})
target_link_libraries(${_NAME}
- PUBLIC ${ABSL_CC_LIB_DEPS}
+ PUBLIC ${_dll_deps}
PRIVATE
${ABSL_CC_LIB_LINKOPTS}
${ABSL_DEFAULT_LINKOPTS}
)
- target_compile_definitions(${_NAME} PUBLIC ${ABSL_CC_LIB_DEFINES})
- # Add all Abseil targets to a a folder in the IDE for organization.
- if(ABSL_CC_LIB_PUBLIC)
- set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER})
- elseif(ABSL_CC_LIB_TESTONLY)
- set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER}/test)
+ if (ABSL_CC_LIB_TESTONLY)
+ set(_gtest_link_define "GTEST_LINKED_AS_SHARED_LIBRARY=1")
else()
- set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER}/internal)
+ set(_gtest_link_define)
endif()
- # INTERFACE libraries can't have the CXX_STANDARD property set
- set_property(TARGET ${_NAME} PROPERTY CXX_STANDARD ${ABSL_CXX_STANDARD})
- set_property(TARGET ${_NAME} PROPERTY CXX_STANDARD_REQUIRED ON)
-
- # When being installed, we lose the absl_ prefix. We want to put it back
- # to have properly named lib files. This is a no-op when we are not being
- # installed.
- set_target_properties(${_NAME} PROPERTIES
- OUTPUT_NAME "absl_${_NAME}"
+ target_compile_definitions(${_NAME}
+ PUBLIC
+ ABSL_CONSUME_DLL
+ "${_gtest_link_define}"
)
- else()
- # Generating header-only library
- add_library(${_NAME} INTERFACE)
- target_include_directories(${_NAME}
- INTERFACE
- "$<BUILD_INTERFACE:${ABSL_COMMON_INCLUDE_DIRS}>"
- $<INSTALL_INTERFACE:${ABSL_INSTALL_INCLUDEDIR}>
- )
+
+ elseif(${_build_type} STREQUAL "static")
+ add_library(${_NAME} STATIC "")
+ target_sources(${_NAME} PRIVATE ${ABSL_CC_LIB_SRCS} ${ABSL_CC_LIB_HDRS})
target_link_libraries(${_NAME}
- INTERFACE
- ${ABSL_CC_LIB_DEPS}
- ${ABSL_CC_LIB_LINKOPTS}
- ${ABSL_DEFAULT_LINKOPTS}
+ PUBLIC ${ABSL_CC_LIB_DEPS}
+ PRIVATE
+ ${ABSL_CC_LIB_LINKOPTS}
+ ${ABSL_DEFAULT_LINKOPTS}
)
- target_compile_definitions(${_NAME} INTERFACE ${ABSL_CC_LIB_DEFINES})
+ else()
+ message(FATAL_ERROR "Invalid build type: ${_build_type}")
endif()
- # TODO currently we don't install googletest alongside abseil sources, so
- # installed abseil can't be tested.
- if(NOT ABSL_CC_LIB_TESTONLY AND ABSL_ENABLE_INSTALL)
- install(TARGETS ${_NAME} EXPORT ${PROJECT_NAME}Targets
- RUNTIME DESTINATION ${ABSL_INSTALL_BINDIR}
- LIBRARY DESTINATION ${ABSL_INSTALL_LIBDIR}
- ARCHIVE DESTINATION ${ABSL_INSTALL_LIBDIR}
+ # Linker language can be inferred from sources, but in the case of DLLs we
+ # don't have any .cc files so it would be ambiguous. We could set it
+ # explicitly only in the case of DLLs but, because "CXX" is always the
+ # correct linker language for static or for shared libraries, we set it
+ # unconditionally.
+ set_property(TARGET ${_NAME} PROPERTY LINKER_LANGUAGE "CXX")
+
+ target_include_directories(${_NAME}
+ PUBLIC
+ "$<BUILD_INTERFACE:${ABSL_COMMON_INCLUDE_DIRS}>"
+ $<INSTALL_INTERFACE:${ABSL_INSTALL_INCLUDEDIR}>
+ )
+ target_compile_options(${_NAME}
+ PRIVATE ${ABSL_CC_LIB_COPTS})
+ target_compile_definitions(${_NAME} PUBLIC ${ABSL_CC_LIB_DEFINES})
+
+ # Add all Abseil targets to a a folder in the IDE for organization.
+ if(ABSL_CC_LIB_PUBLIC)
+ set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER})
+ elseif(ABSL_CC_LIB_TESTONLY)
+ set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER}/test)
+ else()
+ set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER}/internal)
+ endif()
+
+ # INTERFACE libraries can't have the CXX_STANDARD property set
+ set_property(TARGET ${_NAME} PROPERTY CXX_STANDARD ${ABSL_CXX_STANDARD})
+ set_property(TARGET ${_NAME} PROPERTY CXX_STANDARD_REQUIRED ON)
+
+ # When being installed, we lose the absl_ prefix. We want to put it back
+ # to have properly named lib files. This is a no-op when we are not being
+ # installed.
+ if(ABSL_ENABLE_INSTALL)
+ set_target_properties(${_NAME} PROPERTIES
+ OUTPUT_NAME "absl_${_NAME}"
)
endif()
+ else()
+ # Generating header-only library
+ add_library(${_NAME} INTERFACE)
+ target_include_directories(${_NAME}
+ INTERFACE
+ "$<BUILD_INTERFACE:${ABSL_COMMON_INCLUDE_DIRS}>"
+ $<INSTALL_INTERFACE:${ABSL_INSTALL_INCLUDEDIR}>
+ )
- add_library(absl::${ABSL_CC_LIB_NAME} ALIAS ${_NAME})
+ if (${_build_type} STREQUAL "dll")
+ set(ABSL_CC_LIB_DEPS abseil_dll)
+ endif()
+
+ target_link_libraries(${_NAME}
+ INTERFACE
+ ${ABSL_CC_LIB_DEPS}
+ ${ABSL_CC_LIB_LINKOPTS}
+ ${ABSL_DEFAULT_LINKOPTS}
+ )
+ target_compile_definitions(${_NAME} INTERFACE ${ABSL_CC_LIB_DEFINES})
+ endif()
+
+ # TODO currently we don't install googletest alongside abseil sources, so
+ # installed abseil can't be tested.
+ if(NOT ABSL_CC_LIB_TESTONLY AND ABSL_ENABLE_INSTALL)
+ install(TARGETS ${_NAME} EXPORT ${PROJECT_NAME}Targets
+ RUNTIME DESTINATION ${ABSL_INSTALL_BINDIR}
+ LIBRARY DESTINATION ${ABSL_INSTALL_LIBDIR}
+ ARCHIVE DESTINATION ${ABSL_INSTALL_LIBDIR}
+ )
endif()
+
+ add_library(absl::${ABSL_CC_LIB_NAME} ALIAS ${_NAME})
endfunction()
# absl_cc_test()
@@ -224,23 +296,42 @@ function(absl_cc_test)
)
set(_NAME "absl_${ABSL_CC_TEST_NAME}")
+
add_executable(${_NAME} "")
target_sources(${_NAME} PRIVATE ${ABSL_CC_TEST_SRCS})
target_include_directories(${_NAME}
PUBLIC ${ABSL_COMMON_INCLUDE_DIRS}
PRIVATE ${GMOCK_INCLUDE_DIRS} ${GTEST_INCLUDE_DIRS}
)
- target_compile_definitions(${_NAME}
- PUBLIC ${ABSL_CC_TEST_DEFINES}
- )
+
+ if (${ABSL_BUILD_DLL})
+ target_compile_definitions(${_NAME}
+ PUBLIC
+ ${ABSL_CC_TEST_DEFINES}
+ ABSL_CONSUME_DLL
+ GTEST_LINKED_AS_SHARED_LIBRARY=1
+ )
+
+ # Replace dependencies on targets inside the DLL with abseil_dll itself.
+ absl_internal_dll_targets(
+ DEPS ${ABSL_CC_TEST_DEPS}
+ OUTPUT ABSL_CC_TEST_DEPS
+ )
+ else()
+ target_compile_definitions(${_NAME}
+ PUBLIC
+ ${ABSL_CC_TEST_DEFINES}
+ )
+ endif()
target_compile_options(${_NAME}
PRIVATE ${ABSL_CC_TEST_COPTS}
)
+
target_link_libraries(${_NAME}
PUBLIC ${ABSL_CC_TEST_DEPS}
PRIVATE ${ABSL_CC_TEST_LINKOPTS}
)
- # Add all Abseil targets to a a folder in the IDE for organization.
+ # Add all Abseil targets to a folder in the IDE for organization.
set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER}/test)
set_property(TARGET ${_NAME} PROPERTY CXX_STANDARD ${ABSL_CXX_STANDARD})