diff options
Diffstat (limited to 'CMake/AbseilHelpers.cmake')
| -rw-r--r-- | CMake/AbseilHelpers.cmake | 231 |
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}) |