dev-cpp/abseil-cpp/files/abseil-cpp-20230802.0-dll.patch - third_party/overlays/chromiumos-overlay - Git at Google

 From da71eb3945475ac3f219e9e6d77450ba34163e52 Mon Sep 17 00:00:00 2001
 From: Tatsuyuki Ishi <ishitatsuyuki@google.com>
 Date: Mon, 10 Jun 2024 18:53:16 +0900
 Subject: [PATCH] BACKPORT: Abseil DLL patches

 See b/341182265 for how to reproduce the backport.
 ---
  CMake/AbseilDll.cmake                  | 87 +++++++++++++++++++++-----
  CMake/AbseilHelpers.cmake              |  2 +-
  CMakeLists.txt                         |  9 +++
  absl/CMakeLists.txt                    |  4 +-
  absl/copts/AbseilConfigureCopts.cmake  |  2 +-
  ci/linux_gcc-latest_libstdcxx_cmake.sh | 55 +++++++++-------
  ci/linux_gcc_alpine_cmake.sh           | 54 ++++++++++------
  ci/macos_xcode_cmake.sh                | 43 ++++++++-----
  ci/windows_msvc_cmake.bat              |  1 -
  create_lts.py                          | 27 ++++----
  10 files changed, 196 insertions(+), 88 deletions(-)

 diff --git a/CMake/AbseilDll.cmake b/CMake/AbseilDll.cmake
 index f0d984ae..e8470a86 100644
 --- a/CMake/AbseilDll.cmake
 +++ b/CMake/AbseilDll.cmake
 @@ -437,6 +437,44 @@ set(ABSL_INTERNAL_DLL_FILES
    "debugging/leak_check.cc"
  )

 +if(NOT MSVC)
 +  list(APPEND ABSL_INTERNAL_DLL_FILES
 +    "flags/commandlineflag.cc"
 +    "flags/commandlineflag.h"
 +    "flags/config.h"
 +    "flags/declare.h"
 +    "flags/flag.cc"
 +    "flags/flag.h"
 +    "flags/internal/commandlineflag.cc"
 +    "flags/internal/commandlineflag.h"
 +    "flags/internal/flag.cc"
 +    "flags/internal/flag.h"
 +    "flags/internal/parse.h"
 +    "flags/internal/path_util.h"
 +    "flags/internal/private_handle_accessor.cc"
 +    "flags/internal/private_handle_accessor.h"
 +    "flags/internal/program_name.cc"
 +    "flags/internal/program_name.h"
 +    "flags/internal/registry.h"
 +    "flags/internal/sequence_lock.h"
 +    "flags/internal/usage.cc"
 +    "flags/internal/usage.h"
 +    "flags/marshalling.cc"
 +    "flags/marshalling.h"
 +    "flags/parse.cc"
 +    "flags/parse.h"
 +    "flags/reflection.cc"
 +    "flags/reflection.h"
 +    "flags/usage.cc"
 +    "flags/usage.h"
 +    "flags/usage_config.cc"
 +    "flags/usage_config.h"
 +    "log/flags.cc"
 +    "log/flags.h"
 +    "log/internal/flags.h"
 +  )
 +endif()
 +
  set(ABSL_INTERNAL_DLL_TARGETS
    "absl_check"
    "absl_log"
 @@ -505,6 +543,7 @@ set(ABSL_INTERNAL_DLL_TARGETS
    "log_internal_check_op"
    "log_internal_conditions"
    "log_internal_config"
 +  "log_internal_fnmatch"
    "log_internal_format"
    "log_internal_globals"
    "log_internal_log_impl"
 @@ -584,6 +623,7 @@ set(ABSL_INTERNAL_DLL_TARGETS
    "strerror"
    "strings"
    "strings_internal"
 +  "string_view"
    "symbolize"
    "synchronization"
    "thread_pool"
 @@ -594,8 +634,29 @@ set(ABSL_INTERNAL_DLL_TARGETS
    "type_traits"
    "utility"
    "variant"
 +  "vlog_config_internal"
  )

 +if(NOT MSVC)
 +  list(APPEND ABSL_INTERNAL_DLL_TARGETS
 +    "flags"
 +    "flags_commandlineflag"
 +    "flags_commandlineflag_internal"
 +    "flags_config"
 +    "flags_internal"
 +    "flags_marshalling"
 +    "flags_parse"
 +    "flags_path_util"
 +    "flags_private_handle_accessor"
 +    "flags_program_name"
 +    "flags_reflection"
 +    "flags_usage"
 +    "flags_usage_internal"
 +    "log_internal_flags"
 +    "log_flags"
 +  )
 +endif()
 +
  set(ABSL_INTERNAL_TEST_DLL_FILES
    "hash/hash_testing.h"
    "log/scoped_mock_log.cc"
 @@ -653,12 +714,7 @@ function(absl_internal_dll_contains)

    STRING(REGEX REPLACE "^absl::" "" _target ${ABSL_INTERNAL_DLL_TARGET})

 -  list(FIND
 -    ABSL_INTERNAL_DLL_TARGETS
 -    "${_target}"
 -    _index)
 -
 -  if (${_index} GREATER -1)
 +  if (_target IN_LIST ABSL_INTERNAL_DLL_TARGETS)
      set(${ABSL_INTERNAL_DLL_OUTPUT} 1 PARENT_SCOPE)
    else()
      set(${ABSL_INTERNAL_DLL_OUTPUT} 0 PARENT_SCOPE)
 @@ -675,12 +731,7 @@ function(absl_internal_test_dll_contains)

    STRING(REGEX REPLACE "^absl::" "" _target ${ABSL_INTERNAL_TEST_DLL_TARGET})

 -  list(FIND
 -    ABSL_INTERNAL_TEST_DLL_TARGETS
 -    "${_target}"
 -    _index)
 -
 -  if (${_index} GREATER -1)
 +  if (_target IN_LIST ABSL_INTERNAL_TEST_DLL_TARGETS)
      set(${ABSL_INTERNAL_TEST_DLL_OUTPUT} 1 PARENT_SCOPE)
    else()
      set(${ABSL_INTERNAL_TEST_DLL_OUTPUT} 0 PARENT_SCOPE)
 @@ -732,7 +783,12 @@ function(absl_make_dll)
    else()
      set(_dll "abseil_dll")
      set(_dll_files ${ABSL_INTERNAL_DLL_FILES})
 -    set(_dll_libs "")
 +    set(_dll_libs
 +      Threads::Threads
 +      # TODO(#1495): Use $<LINK_LIBRARY:FRAMEWORK,CoreFoundation> once our
 +      # minimum CMake version >= 3.24
 +      $<$<PLATFORM_ID:Darwin>:-Wl,-framework,CoreFoundation>
 +    )
      set(_dll_compile_definitions "")
      set(_dll_includes "")
      set(_dll_consume "ABSL_CONSUME_DLL")
 @@ -750,7 +806,10 @@ function(absl_make_dll)
        ${_dll_libs}
        ${ABSL_DEFAULT_LINKOPTS}
    )
 -  set_property(TARGET ${_dll} PROPERTY LINKER_LANGUAGE "CXX")
 +  set_target_properties(${_dll} PROPERTIES
 +    LINKER_LANGUAGE "CXX"
 +    SOVERSION ${ABSL_SOVERSION}
 +  )
    target_include_directories(
      ${_dll}
      PUBLIC
 diff --git a/CMake/AbseilHelpers.cmake b/CMake/AbseilHelpers.cmake
 index 3bd33ce8..561e67b0 100644
 --- a/CMake/AbseilHelpers.cmake
 +++ b/CMake/AbseilHelpers.cmake
 @@ -298,7 +298,7 @@ Cflags: -I\${includedir}${PC_CFLAGS}\n")
      if(ABSL_ENABLE_INSTALL)
        set_target_properties(${_NAME} PROPERTIES
          OUTPUT_NAME "absl_${_NAME}"
 -        SOVERSION "2308.0.0"
 +        SOVERSION "${ABSL_SOVERSION}"
        )
      endif()
    else()
 diff --git a/CMakeLists.txt b/CMakeLists.txt
 index eef66267..8886d643 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
 @@ -54,6 +54,7 @@ if (POLICY CMP0141)
  endif (POLICY CMP0141)

  project(absl LANGUAGES CXX VERSION 20230802)
 +set(ABSL_SOVERSION "2308.0.0")
  include(CTest)

  # Output directory is correct by default for most build setups. However, when
 @@ -144,6 +145,14 @@ set(ABSL_LOCAL_GOOGLETEST_DIR "/usr/src/googletest" CACHE PATH
    "If ABSL_USE_GOOGLETEST_HEAD is OFF and ABSL_GOOGLETEST_URL is not set, specifies the directory of a local GoogleTest checkout."
    )

 +option(ABSL_BUILD_MONOLITHIC_SHARED_LIBS
 +  "Build Abseil as a single shared library (always enabled for Windows)"
 +  OFF
 +)
 +if(NOT BUILD_SHARED_LIBS AND ABSL_BUILD_MONOLITHIC_SHARED_LIBS)
 +  message(WARNING "Not building a shared library because BUILD_SHARED_LIBS is not set. Ignoring ABSL_BUILD_MONOLITHIC_SHARED_LIBS.")
 +endif()
 +
  if((BUILD_TESTING AND ABSL_BUILD_TESTING) OR ABSL_BUILD_TEST_HELPERS)
    if (ABSL_USE_EXTERNAL_GOOGLETEST)
      if (ABSL_FIND_GOOGLETEST)
 diff --git a/absl/CMakeLists.txt b/absl/CMakeLists.txt
 index 3a7c12fe..810d7f31 100644
 --- a/absl/CMakeLists.txt
 +++ b/absl/CMakeLists.txt
 @@ -36,9 +36,9 @@ add_subdirectory(time)
  add_subdirectory(types)
  add_subdirectory(utility)

 -if (${ABSL_BUILD_DLL})
 +if (ABSL_BUILD_DLL)
    absl_make_dll()
 -  if (${ABSL_BUILD_TEST_HELPERS})
 +  if ((BUILD_TESTING AND ABSL_BUILD_TESTING) OR ABSL_BUILD_TEST_HELPERS)
      absl_make_dll(TEST ON)
    endif()
  endif()
 diff --git a/absl/copts/AbseilConfigureCopts.cmake b/absl/copts/AbseilConfigureCopts.cmake
 index 3f737c81..1afb9610 100644
 --- a/absl/copts/AbseilConfigureCopts.cmake
 +++ b/absl/copts/AbseilConfigureCopts.cmake
 @@ -3,7 +3,7 @@ include(GENERATED_AbseilCopts)

  set(ABSL_DEFAULT_LINKOPTS "")

 -if (BUILD_SHARED_LIBS AND MSVC)
 +if (BUILD_SHARED_LIBS AND (MSVC OR ABSL_BUILD_MONOLITHIC_SHARED_LIBS))
    set(ABSL_BUILD_DLL TRUE)
    set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
  else()
 diff --git a/ci/linux_gcc-latest_libstdcxx_cmake.sh b/ci/linux_gcc-latest_libstdcxx_cmake.sh
 index 1f721236..243901c2 100755
 --- a/ci/linux_gcc-latest_libstdcxx_cmake.sh
 +++ b/ci/linux_gcc-latest_libstdcxx_cmake.sh
 @@ -34,33 +34,46 @@ if [[ -z ${ABSL_CMAKE_BUILD_SHARED:-} ]]; then
    ABSL_CMAKE_BUILD_SHARED="OFF ON"
  fi

 +if [[ -z ${ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS:-} ]]; then
 +  ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS="OFF ON"
 +fi
 +
  source "${ABSEIL_ROOT}/ci/linux_docker_containers.sh"
  readonly DOCKER_CONTAINER=${LINUX_GCC_LATEST_CONTAINER}

  for std in ${ABSL_CMAKE_CXX_STANDARDS}; do
    for compilation_mode in ${ABSL_CMAKE_BUILD_TYPES}; do
      for build_shared in ${ABSL_CMAKE_BUILD_SHARED}; do
 -      time docker run \
 -        --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
 -        --tmpfs=/buildfs:exec \
 -        --workdir=/buildfs \
 -        --cap-add=SYS_PTRACE \
 -        --rm \
 -        -e CFLAGS="-Werror" \
 -        -e CXXFLAGS="-Werror" \
 -        ${DOCKER_EXTRA_ARGS:-} \
 -        "${DOCKER_CONTAINER}" \
 -        /bin/bash -c "
 -          cmake /abseil-cpp \
 -            -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
 -            -DBUILD_SHARED_LIBS=${build_shared} \
 -            -DABSL_BUILD_TESTING=ON \
 -            -DCMAKE_BUILD_TYPE=${compilation_mode} \
 -            -DCMAKE_CXX_STANDARD=${std} \
 -            -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
 -          make -j$(nproc) && \
 -          TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
 -          ctest -j$(nproc) --output-on-failure"
 +      if [[ $build_shared == "OFF" ]]; then
 +        monolithic_shared_options="OFF"
 +      else
 +        monolithic_shared_options="$ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS"
 +      fi
 +
 +      for monolithic_shared in $monolithic_shared_options; do
 +        time docker run \
 +          --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
 +          --tmpfs=/buildfs:exec \
 +          --workdir=/buildfs \
 +          --cap-add=SYS_PTRACE \
 +          --rm \
 +          -e CFLAGS="-Werror" \
 +          -e CXXFLAGS="-Werror" \
 +          ${DOCKER_EXTRA_ARGS:-} \
 +          "${DOCKER_CONTAINER}" \
 +          /bin/bash -c "
 +            cmake /abseil-cpp \
 +              -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
 +              -DBUILD_SHARED_LIBS=${build_shared} \
 +              -DABSL_BUILD_TESTING=ON \
 +              -DCMAKE_BUILD_TYPE=${compilation_mode} \
 +              -DCMAKE_CXX_STANDARD=${std} \
 +              -DABSL_BUILD_MONOLITHIC_SHARED_LIBS=${monolithic_shared} \
 +              -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
 +            make -j$(nproc) && \
 +            TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
 +            ctest -j$(nproc) --output-on-failure"
 +        done
      done
    done
  done
 diff --git a/ci/linux_gcc_alpine_cmake.sh b/ci/linux_gcc_alpine_cmake.sh
 index b784456f..f19954f5 100755
 --- a/ci/linux_gcc_alpine_cmake.sh
 +++ b/ci/linux_gcc_alpine_cmake.sh
 @@ -34,32 +34,46 @@ if [[ -z ${ABSL_CMAKE_BUILD_SHARED:-} ]]; then
    ABSL_CMAKE_BUILD_SHARED="OFF ON"
  fi

 +if [[ -z ${ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS:-} ]]; then
 +  ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS="OFF ON"
 +fi
 +
  source "${ABSEIL_ROOT}/ci/linux_docker_containers.sh"
  readonly DOCKER_CONTAINER=${LINUX_ALPINE_CONTAINER}

  for std in ${ABSL_CMAKE_CXX_STANDARDS}; do
    for compilation_mode in ${ABSL_CMAKE_BUILD_TYPES}; do
      for build_shared in ${ABSL_CMAKE_BUILD_SHARED}; do
 -      time docker run \
 -        --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
 -        --tmpfs=/buildfs:exec \
 -        --workdir=/buildfs \
 -        --cap-add=SYS_PTRACE \
 -        --rm \
 -        -e CFLAGS="-Werror" \
 -        -e CXXFLAGS="-Werror" \
 -        ${DOCKER_EXTRA_ARGS:-} \
 -        "${DOCKER_CONTAINER}" \
 -        /bin/sh -c "
 -          cmake /abseil-cpp \
 -            -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
 -            -DABSL_BUILD_TESTING=ON \
 -            -DCMAKE_BUILD_TYPE=${compilation_mode} \
 -            -DCMAKE_CXX_STANDARD=${std} \
 -            -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
 -          make -j$(nproc) && \
 -          TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
 -          ctest -j$(nproc) --output-on-failure"
 +      if [[ $build_shared == "OFF" ]]; then
 +        monolithic_shared_options="OFF"
 +      else
 +        monolithic_shared_options="$ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS"
 +      fi
 +
 +      for monolithic_shared in $monolithic_shared_options; do
 +        time docker run \
 +          --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
 +          --tmpfs=/buildfs:exec \
 +          --workdir=/buildfs \
 +          --cap-add=SYS_PTRACE \
 +          --rm \
 +          -e CFLAGS="-Werror" \
 +          -e CXXFLAGS="-Werror" \
 +          ${DOCKER_EXTRA_ARGS:-} \
 +          "${DOCKER_CONTAINER}" \
 +          /bin/sh -c "
 +            cmake /abseil-cpp \
 +              -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
 +              -DBUILD_SHARED_LIBS=${build_shared} \
 +              -DABSL_BUILD_TESTING=ON \
 +              -DCMAKE_BUILD_TYPE=${compilation_mode} \
 +              -DCMAKE_CXX_STANDARD=${std} \
 +              -DABSL_BUILD_MONOLITHIC_SHARED_LIBS=${monolithic_shared} \
 +              -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
 +            make -j$(nproc) && \
 +            TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
 +            ctest -j$(nproc) --output-on-failure"
 +        done
      done
    done
  done
 diff --git a/ci/macos_xcode_cmake.sh b/ci/macos_xcode_cmake.sh
 index 690f86b8..c8780384 100755
 --- a/ci/macos_xcode_cmake.sh
 +++ b/ci/macos_xcode_cmake.sh
 @@ -36,22 +36,35 @@ if [[ -z ${ABSL_CMAKE_BUILD_SHARED:-} ]]; then
    ABSL_CMAKE_BUILD_SHARED="OFF ON"
  fi

 +if [[ -z ${ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS:-} ]]; then
 +  ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS="OFF ON"
 +fi
 +
  for compilation_mode in ${ABSL_CMAKE_BUILD_TYPES}; do
    for build_shared in ${ABSL_CMAKE_BUILD_SHARED}; do
 -    BUILD_DIR=$(mktemp -d ${compilation_mode}.XXXXXXXX)
 -    cd ${BUILD_DIR}
 -
 -    # TODO(absl-team): Enable -Werror once all warnings are fixed.
 -    time cmake ${ABSEIL_ROOT} \
 -      -GXcode \
 -      -DBUILD_SHARED_LIBS=${build_shared} \
 -      -DABSL_BUILD_TESTING=ON \
 -      -DCMAKE_BUILD_TYPE=${compilation_mode} \
 -      -DCMAKE_CXX_STANDARD=14 \
 -      -DCMAKE_MODULE_LINKER_FLAGS="-Wl,--no-undefined" \
 -      -DABSL_GOOGLETEST_DOWNLOAD_URL="${ABSL_GOOGLETEST_DOWNLOAD_URL}"
 -    time cmake --build .
 -    time TZDIR=${ABSEIL_ROOT}/absl/time/internal/cctz/testdata/zoneinfo \
 -      ctest -C ${compilation_mode} --output-on-failure
 +    if [[ $build_shared == "OFF" ]]; then
 +      monolithic_shared_options="OFF"
 +    else
 +      monolithic_shared_options="$ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS"
 +    fi
 +
 +    for monolithic_shared in $monolithic_shared_options; do
 +      BUILD_DIR=$(mktemp -d ${compilation_mode}.XXXXXXXX)
 +      cd ${BUILD_DIR}
 +
 +      # TODO(absl-team): Enable -Werror once all warnings are fixed.
 +      time cmake ${ABSEIL_ROOT} \
 +        -GXcode \
 +        -DBUILD_SHARED_LIBS=${build_shared} \
 +        -DABSL_BUILD_TESTING=ON \
 +        -DCMAKE_BUILD_TYPE=${compilation_mode} \
 +        -DCMAKE_CXX_STANDARD=14 \
 +        -DCMAKE_MODULE_LINKER_FLAGS="-Wl,--no-undefined" \
 +        -DABSL_BUILD_MONOLITHIC_SHARED_LIBS=${monolithic_shared} \
 +        -DABSL_GOOGLETEST_DOWNLOAD_URL="${ABSL_GOOGLETEST_DOWNLOAD_URL}"
 +      time cmake --build .
 +      time TZDIR=${ABSEIL_ROOT}/absl/time/internal/cctz/testdata/zoneinfo \
 +        ctest -C ${compilation_mode} --output-on-failure
 +    done
    done
  done
 diff --git a/ci/windows_msvc_cmake.bat b/ci/windows_msvc_cmake.bat
 index 743b6f79..789f2c63 100755
 --- a/ci/windows_msvc_cmake.bat
 +++ b/ci/windows_msvc_cmake.bat
 @@ -51,7 +51,6 @@ CD "build"
  SET CXXFLAGS="/WX"

  %CMAKE_BIN% ^
 -  -DABSL_BUILD_TEST_HELPERS=ON ^
    -DABSL_BUILD_TESTING=ON ^
    -DABSL_GOOGLETEST_DOWNLOAD_URL=%ABSL_GOOGLETEST_DOWNLOAD_URL% ^
    -DBUILD_SHARED_LIBS=%ABSL_CMAKE_BUILD_SHARED% ^
 diff --git a/create_lts.py b/create_lts.py
 index 642b8847..8ad2b64f 100755
 --- a/create_lts.py
 +++ b/create_lts.py
 @@ -111,20 +111,21 @@ def main(argv):
                    datestamp)
        })
    ReplaceStringsInFile(
 -      'CMakeLists.txt', {
 -          'project(absl LANGUAGES CXX)':
 +      'CMakeLists.txt',
 +      {
 +          'project(absl LANGUAGES CXX)': (
                'project(absl LANGUAGES CXX VERSION {})'.format(datestamp)
 -      })
 -  # Set the SOVERSION to YYMM.0.0 - The first 0 means we only have ABI
 -  # compatible changes, and the second 0 means we can increment it to
 -  # mark changes as ABI-compatible, for patch releases.  Note that we
 -  # only use the last two digits of the year and the month because the
 -  # MacOS linker requires the first part of the SOVERSION to fit into
 -  # 16 bits.
 -  # https://www.sicpers.info/2013/03/how-to-version-a-mach-o-library/
 -  ReplaceStringsInFile(
 -      'CMake/AbseilHelpers.cmake',
 -      {'SOVERSION 0': 'SOVERSION "{}.0.0"'.format(datestamp[2:6])})
 +          ),
 +          # Set the SOVERSION to YYMM.0.0 - The first 0 means we only have ABI
 +          # compatible changes, and the second 0 means we can increment it to
 +          # mark changes as ABI-compatible, for patch releases.  Note that we
 +          # only use the last two digits of the year and the month because the
 +          # MacOS linker requires the first part of the SOVERSION to fit into
 +          # 16 bits.
 +          # https://www.sicpers.info/2013/03/how-to-version-a-mach-o-library/
 +          'ABSL_SOVERSION 0': 'ABSL_SOVERSION "{}.0.0"'.format(datestamp[2:6]),
 +      },
 +  )
    StripContentBetweenTags('CMakeLists.txt', '# absl:lts-remove-begin',
                            '# absl:lts-remove-end')

 --
 2.45.2.505.gda0bf45e8d-goog
	From da71eb3945475ac3f219e9e6d77450ba34163e52 Mon Sep 17 00:00:00 2001
	From: Tatsuyuki Ishi <ishitatsuyuki@google.com>
	Date: Mon, 10 Jun 2024 18:53:16 +0900
	Subject: [PATCH] BACKPORT: Abseil DLL patches

	See b/341182265 for how to reproduce the backport.
	---
	CMake/AbseilDll.cmake \| 87 +++++++++++++++++++++-----
	CMake/AbseilHelpers.cmake \| 2 +-
	CMakeLists.txt \| 9 +++
	absl/CMakeLists.txt \| 4 +-
	absl/copts/AbseilConfigureCopts.cmake \| 2 +-
	ci/linux_gcc-latest_libstdcxx_cmake.sh \| 55 +++++++++-------
	ci/linux_gcc_alpine_cmake.sh \| 54 ++++++++++------
	ci/macos_xcode_cmake.sh \| 43 ++++++++-----
	ci/windows_msvc_cmake.bat \| 1 -
	create_lts.py \| 27 ++++----
	10 files changed, 196 insertions(+), 88 deletions(-)

	diff --git a/CMake/AbseilDll.cmake b/CMake/AbseilDll.cmake
	index f0d984ae..e8470a86 100644
	--- a/CMake/AbseilDll.cmake
	+++ b/CMake/AbseilDll.cmake
	@@ -437,6 +437,44 @@ set(ABSL_INTERNAL_DLL_FILES
	"debugging/leak_check.cc"
	)

	+if(NOT MSVC)
	+ list(APPEND ABSL_INTERNAL_DLL_FILES
	+ "flags/commandlineflag.cc"
	+ "flags/commandlineflag.h"
	+ "flags/config.h"
	+ "flags/declare.h"
	+ "flags/flag.cc"
	+ "flags/flag.h"
	+ "flags/internal/commandlineflag.cc"
	+ "flags/internal/commandlineflag.h"
	+ "flags/internal/flag.cc"
	+ "flags/internal/flag.h"
	+ "flags/internal/parse.h"
	+ "flags/internal/path_util.h"
	+ "flags/internal/private_handle_accessor.cc"
	+ "flags/internal/private_handle_accessor.h"
	+ "flags/internal/program_name.cc"
	+ "flags/internal/program_name.h"
	+ "flags/internal/registry.h"
	+ "flags/internal/sequence_lock.h"
	+ "flags/internal/usage.cc"
	+ "flags/internal/usage.h"
	+ "flags/marshalling.cc"
	+ "flags/marshalling.h"
	+ "flags/parse.cc"
	+ "flags/parse.h"
	+ "flags/reflection.cc"
	+ "flags/reflection.h"
	+ "flags/usage.cc"
	+ "flags/usage.h"
	+ "flags/usage_config.cc"
	+ "flags/usage_config.h"
	+ "log/flags.cc"
	+ "log/flags.h"
	+ "log/internal/flags.h"
	+ )
	+endif()
	+
	set(ABSL_INTERNAL_DLL_TARGETS
	"absl_check"
	"absl_log"
	@@ -505,6 +543,7 @@ set(ABSL_INTERNAL_DLL_TARGETS
	"log_internal_check_op"
	"log_internal_conditions"
	"log_internal_config"
	+ "log_internal_fnmatch"
	"log_internal_format"
	"log_internal_globals"
	"log_internal_log_impl"
	@@ -584,6 +623,7 @@ set(ABSL_INTERNAL_DLL_TARGETS
	"strerror"
	"strings"
	"strings_internal"
	+ "string_view"
	"symbolize"
	"synchronization"
	"thread_pool"
	@@ -594,8 +634,29 @@ set(ABSL_INTERNAL_DLL_TARGETS
	"type_traits"
	"utility"
	"variant"
	+ "vlog_config_internal"
	)

	+if(NOT MSVC)
	+ list(APPEND ABSL_INTERNAL_DLL_TARGETS
	+ "flags"
	+ "flags_commandlineflag"
	+ "flags_commandlineflag_internal"
	+ "flags_config"
	+ "flags_internal"
	+ "flags_marshalling"
	+ "flags_parse"
	+ "flags_path_util"
	+ "flags_private_handle_accessor"
	+ "flags_program_name"
	+ "flags_reflection"
	+ "flags_usage"
	+ "flags_usage_internal"
	+ "log_internal_flags"
	+ "log_flags"
	+ )
	+endif()
	+
	set(ABSL_INTERNAL_TEST_DLL_FILES
	"hash/hash_testing.h"
	"log/scoped_mock_log.cc"
	@@ -653,12 +714,7 @@ function(absl_internal_dll_contains)

	STRING(REGEX REPLACE "^absl::" "" _target ${ABSL_INTERNAL_DLL_TARGET})

	- list(FIND
	- ABSL_INTERNAL_DLL_TARGETS
	- "${_target}"
	- _index)
	-
	- if (${_index} GREATER -1)
	+ if (_target IN_LIST ABSL_INTERNAL_DLL_TARGETS)
	set(${ABSL_INTERNAL_DLL_OUTPUT} 1 PARENT_SCOPE)
	else()
	set(${ABSL_INTERNAL_DLL_OUTPUT} 0 PARENT_SCOPE)
	@@ -675,12 +731,7 @@ function(absl_internal_test_dll_contains)

	STRING(REGEX REPLACE "^absl::" "" _target ${ABSL_INTERNAL_TEST_DLL_TARGET})

	- list(FIND
	- ABSL_INTERNAL_TEST_DLL_TARGETS
	- "${_target}"
	- _index)
	-
	- if (${_index} GREATER -1)
	+ if (_target IN_LIST ABSL_INTERNAL_TEST_DLL_TARGETS)
	set(${ABSL_INTERNAL_TEST_DLL_OUTPUT} 1 PARENT_SCOPE)
	else()
	set(${ABSL_INTERNAL_TEST_DLL_OUTPUT} 0 PARENT_SCOPE)
	@@ -732,7 +783,12 @@ function(absl_make_dll)
	else()
	set(_dll "abseil_dll")
	set(_dll_files ${ABSL_INTERNAL_DLL_FILES})
	- set(_dll_libs "")
	+ set(_dll_libs
	+ Threads::Threads
	+ # TODO(#1495): Use $<LINK_LIBRARY:FRAMEWORK,CoreFoundation> once our
	+ # minimum CMake version >= 3.24
	+ $<$<PLATFORM_ID:Darwin>:-Wl,-framework,CoreFoundation>
	+ )
	set(_dll_compile_definitions "")
	set(_dll_includes "")
	set(_dll_consume "ABSL_CONSUME_DLL")
	@@ -750,7 +806,10 @@ function(absl_make_dll)
	${_dll_libs}
	${ABSL_DEFAULT_LINKOPTS}
	)
	- set_property(TARGET ${_dll} PROPERTY LINKER_LANGUAGE "CXX")
	+ set_target_properties(${_dll} PROPERTIES
	+ LINKER_LANGUAGE "CXX"
	+ SOVERSION ${ABSL_SOVERSION}
	+ )
	target_include_directories(
	${_dll}
	PUBLIC
	diff --git a/CMake/AbseilHelpers.cmake b/CMake/AbseilHelpers.cmake
	index 3bd33ce8..561e67b0 100644
	--- a/CMake/AbseilHelpers.cmake
	+++ b/CMake/AbseilHelpers.cmake
	@@ -298,7 +298,7 @@ Cflags: -I\${includedir}${PC_CFLAGS}\n")
	if(ABSL_ENABLE_INSTALL)
	set_target_properties(${_NAME} PROPERTIES
	OUTPUT_NAME "absl_${_NAME}"
	- SOVERSION "2308.0.0"
	+ SOVERSION "${ABSL_SOVERSION}"
	)
	endif()
	else()
	diff --git a/CMakeLists.txt b/CMakeLists.txt
	index eef66267..8886d643 100644
	--- a/CMakeLists.txt
	+++ b/CMakeLists.txt
	@@ -54,6 +54,7 @@ if (POLICY CMP0141)
	endif (POLICY CMP0141)

	project(absl LANGUAGES CXX VERSION 20230802)
	+set(ABSL_SOVERSION "2308.0.0")
	include(CTest)

	# Output directory is correct by default for most build setups. However, when
	@@ -144,6 +145,14 @@ set(ABSL_LOCAL_GOOGLETEST_DIR "/usr/src/googletest" CACHE PATH
	"If ABSL_USE_GOOGLETEST_HEAD is OFF and ABSL_GOOGLETEST_URL is not set, specifies the directory of a local GoogleTest checkout."
	)

	+option(ABSL_BUILD_MONOLITHIC_SHARED_LIBS
	+ "Build Abseil as a single shared library (always enabled for Windows)"
	+ OFF
	+)
	+if(NOT BUILD_SHARED_LIBS AND ABSL_BUILD_MONOLITHIC_SHARED_LIBS)
	+ message(WARNING "Not building a shared library because BUILD_SHARED_LIBS is not set. Ignoring ABSL_BUILD_MONOLITHIC_SHARED_LIBS.")
	+endif()
	+
	if((BUILD_TESTING AND ABSL_BUILD_TESTING) OR ABSL_BUILD_TEST_HELPERS)
	if (ABSL_USE_EXTERNAL_GOOGLETEST)
	if (ABSL_FIND_GOOGLETEST)
	diff --git a/absl/CMakeLists.txt b/absl/CMakeLists.txt
	index 3a7c12fe..810d7f31 100644
	--- a/absl/CMakeLists.txt
	+++ b/absl/CMakeLists.txt
	@@ -36,9 +36,9 @@ add_subdirectory(time)
	add_subdirectory(types)
	add_subdirectory(utility)

	-if (${ABSL_BUILD_DLL})
	+if (ABSL_BUILD_DLL)
	absl_make_dll()
	- if (${ABSL_BUILD_TEST_HELPERS})
	+ if ((BUILD_TESTING AND ABSL_BUILD_TESTING) OR ABSL_BUILD_TEST_HELPERS)
	absl_make_dll(TEST ON)
	endif()
	endif()
	diff --git a/absl/copts/AbseilConfigureCopts.cmake b/absl/copts/AbseilConfigureCopts.cmake
	index 3f737c81..1afb9610 100644
	--- a/absl/copts/AbseilConfigureCopts.cmake
	+++ b/absl/copts/AbseilConfigureCopts.cmake
	@@ -3,7 +3,7 @@ include(GENERATED_AbseilCopts)

	set(ABSL_DEFAULT_LINKOPTS "")

	-if (BUILD_SHARED_LIBS AND MSVC)
	+if (BUILD_SHARED_LIBS AND (MSVC OR ABSL_BUILD_MONOLITHIC_SHARED_LIBS))
	set(ABSL_BUILD_DLL TRUE)
	set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
	else()
	diff --git a/ci/linux_gcc-latest_libstdcxx_cmake.sh b/ci/linux_gcc-latest_libstdcxx_cmake.sh
	index 1f721236..243901c2 100755
	--- a/ci/linux_gcc-latest_libstdcxx_cmake.sh
	+++ b/ci/linux_gcc-latest_libstdcxx_cmake.sh
	@@ -34,33 +34,46 @@ if [[ -z ${ABSL_CMAKE_BUILD_SHARED:-} ]]; then
	ABSL_CMAKE_BUILD_SHARED="OFF ON"
	fi

	+if [[ -z ${ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS:-} ]]; then
	+ ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS="OFF ON"
	+fi
	+
	source "${ABSEIL_ROOT}/ci/linux_docker_containers.sh"
	readonly DOCKER_CONTAINER=${LINUX_GCC_LATEST_CONTAINER}

	for std in ${ABSL_CMAKE_CXX_STANDARDS}; do
	for compilation_mode in ${ABSL_CMAKE_BUILD_TYPES}; do
	for build_shared in ${ABSL_CMAKE_BUILD_SHARED}; do
	- time docker run \
	- --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
	- --tmpfs=/buildfs:exec \
	- --workdir=/buildfs \
	- --cap-add=SYS_PTRACE \
	- --rm \
	- -e CFLAGS="-Werror" \
	- -e CXXFLAGS="-Werror" \
	- ${DOCKER_EXTRA_ARGS:-} \
	- "${DOCKER_CONTAINER}" \
	- /bin/bash -c "
	- cmake /abseil-cpp \
	- -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
	- -DBUILD_SHARED_LIBS=${build_shared} \
	- -DABSL_BUILD_TESTING=ON \
	- -DCMAKE_BUILD_TYPE=${compilation_mode} \
	- -DCMAKE_CXX_STANDARD=${std} \
	- -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
	- make -j$(nproc) && \
	- TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
	- ctest -j$(nproc) --output-on-failure"
	+ if [[ $build_shared == "OFF" ]]; then
	+ monolithic_shared_options="OFF"
	+ else
	+ monolithic_shared_options="$ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS"
	+ fi
	+
	+ for monolithic_shared in $monolithic_shared_options; do
	+ time docker run \
	+ --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
	+ --tmpfs=/buildfs:exec \
	+ --workdir=/buildfs \
	+ --cap-add=SYS_PTRACE \
	+ --rm \
	+ -e CFLAGS="-Werror" \
	+ -e CXXFLAGS="-Werror" \
	+ ${DOCKER_EXTRA_ARGS:-} \
	+ "${DOCKER_CONTAINER}" \
	+ /bin/bash -c "
	+ cmake /abseil-cpp \
	+ -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
	+ -DBUILD_SHARED_LIBS=${build_shared} \
	+ -DABSL_BUILD_TESTING=ON \
	+ -DCMAKE_BUILD_TYPE=${compilation_mode} \
	+ -DCMAKE_CXX_STANDARD=${std} \
	+ -DABSL_BUILD_MONOLITHIC_SHARED_LIBS=${monolithic_shared} \
	+ -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
	+ make -j$(nproc) && \
	+ TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
	+ ctest -j$(nproc) --output-on-failure"
	+ done
	done
	done
	done
	diff --git a/ci/linux_gcc_alpine_cmake.sh b/ci/linux_gcc_alpine_cmake.sh
	index b784456f..f19954f5 100755
	--- a/ci/linux_gcc_alpine_cmake.sh
	+++ b/ci/linux_gcc_alpine_cmake.sh
	@@ -34,32 +34,46 @@ if [[ -z ${ABSL_CMAKE_BUILD_SHARED:-} ]]; then
	ABSL_CMAKE_BUILD_SHARED="OFF ON"
	fi

	+if [[ -z ${ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS:-} ]]; then
	+ ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS="OFF ON"
	+fi
	+
	source "${ABSEIL_ROOT}/ci/linux_docker_containers.sh"
	readonly DOCKER_CONTAINER=${LINUX_ALPINE_CONTAINER}

	for std in ${ABSL_CMAKE_CXX_STANDARDS}; do
	for compilation_mode in ${ABSL_CMAKE_BUILD_TYPES}; do
	for build_shared in ${ABSL_CMAKE_BUILD_SHARED}; do
	- time docker run \
	- --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
	- --tmpfs=/buildfs:exec \
	- --workdir=/buildfs \
	- --cap-add=SYS_PTRACE \
	- --rm \
	- -e CFLAGS="-Werror" \
	- -e CXXFLAGS="-Werror" \
	- ${DOCKER_EXTRA_ARGS:-} \
	- "${DOCKER_CONTAINER}" \
	- /bin/sh -c "
	- cmake /abseil-cpp \
	- -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
	- -DABSL_BUILD_TESTING=ON \
	- -DCMAKE_BUILD_TYPE=${compilation_mode} \
	- -DCMAKE_CXX_STANDARD=${std} \
	- -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
	- make -j$(nproc) && \
	- TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
	- ctest -j$(nproc) --output-on-failure"
	+ if [[ $build_shared == "OFF" ]]; then
	+ monolithic_shared_options="OFF"
	+ else
	+ monolithic_shared_options="$ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS"
	+ fi
	+
	+ for monolithic_shared in $monolithic_shared_options; do
	+ time docker run \
	+ --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
	+ --tmpfs=/buildfs:exec \
	+ --workdir=/buildfs \
	+ --cap-add=SYS_PTRACE \
	+ --rm \
	+ -e CFLAGS="-Werror" \
	+ -e CXXFLAGS="-Werror" \
	+ ${DOCKER_EXTRA_ARGS:-} \
	+ "${DOCKER_CONTAINER}" \
	+ /bin/sh -c "
	+ cmake /abseil-cpp \
	+ -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
	+ -DBUILD_SHARED_LIBS=${build_shared} \
	+ -DABSL_BUILD_TESTING=ON \
	+ -DCMAKE_BUILD_TYPE=${compilation_mode} \
	+ -DCMAKE_CXX_STANDARD=${std} \
	+ -DABSL_BUILD_MONOLITHIC_SHARED_LIBS=${monolithic_shared} \
	+ -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
	+ make -j$(nproc) && \
	+ TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
	+ ctest -j$(nproc) --output-on-failure"
	+ done
	done
	done
	done
	diff --git a/ci/macos_xcode_cmake.sh b/ci/macos_xcode_cmake.sh
	index 690f86b8..c8780384 100755
	--- a/ci/macos_xcode_cmake.sh
	+++ b/ci/macos_xcode_cmake.sh
	@@ -36,22 +36,35 @@ if [[ -z ${ABSL_CMAKE_BUILD_SHARED:-} ]]; then
	ABSL_CMAKE_BUILD_SHARED="OFF ON"
	fi

	+if [[ -z ${ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS:-} ]]; then
	+ ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS="OFF ON"
	+fi
	+
	for compilation_mode in ${ABSL_CMAKE_BUILD_TYPES}; do
	for build_shared in ${ABSL_CMAKE_BUILD_SHARED}; do
	- BUILD_DIR=$(mktemp -d ${compilation_mode}.XXXXXXXX)
	- cd ${BUILD_DIR}
	-
	- # TODO(absl-team): Enable -Werror once all warnings are fixed.
	- time cmake ${ABSEIL_ROOT} \
	- -GXcode \
	- -DBUILD_SHARED_LIBS=${build_shared} \
	- -DABSL_BUILD_TESTING=ON \
	- -DCMAKE_BUILD_TYPE=${compilation_mode} \
	- -DCMAKE_CXX_STANDARD=14 \
	- -DCMAKE_MODULE_LINKER_FLAGS="-Wl,--no-undefined" \
	- -DABSL_GOOGLETEST_DOWNLOAD_URL="${ABSL_GOOGLETEST_DOWNLOAD_URL}"
	- time cmake --build .
	- time TZDIR=${ABSEIL_ROOT}/absl/time/internal/cctz/testdata/zoneinfo \
	- ctest -C ${compilation_mode} --output-on-failure
	+ if [[ $build_shared == "OFF" ]]; then
	+ monolithic_shared_options="OFF"
	+ else
	+ monolithic_shared_options="$ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS"
	+ fi
	+
	+ for monolithic_shared in $monolithic_shared_options; do
	+ BUILD_DIR=$(mktemp -d ${compilation_mode}.XXXXXXXX)
	+ cd ${BUILD_DIR}
	+
	+ # TODO(absl-team): Enable -Werror once all warnings are fixed.
	+ time cmake ${ABSEIL_ROOT} \
	+ -GXcode \
	+ -DBUILD_SHARED_LIBS=${build_shared} \
	+ -DABSL_BUILD_TESTING=ON \
	+ -DCMAKE_BUILD_TYPE=${compilation_mode} \
	+ -DCMAKE_CXX_STANDARD=14 \
	+ -DCMAKE_MODULE_LINKER_FLAGS="-Wl,--no-undefined" \
	+ -DABSL_BUILD_MONOLITHIC_SHARED_LIBS=${monolithic_shared} \
	+ -DABSL_GOOGLETEST_DOWNLOAD_URL="${ABSL_GOOGLETEST_DOWNLOAD_URL}"
	+ time cmake --build .
	+ time TZDIR=${ABSEIL_ROOT}/absl/time/internal/cctz/testdata/zoneinfo \
	+ ctest -C ${compilation_mode} --output-on-failure
	+ done
	done
	done
	diff --git a/ci/windows_msvc_cmake.bat b/ci/windows_msvc_cmake.bat
	index 743b6f79..789f2c63 100755
	--- a/ci/windows_msvc_cmake.bat
	+++ b/ci/windows_msvc_cmake.bat
	@@ -51,7 +51,6 @@ CD "build"
	SET CXXFLAGS="/WX"

	%CMAKE_BIN% ^
	- -DABSL_BUILD_TEST_HELPERS=ON ^
	-DABSL_BUILD_TESTING=ON ^
	-DABSL_GOOGLETEST_DOWNLOAD_URL=%ABSL_GOOGLETEST_DOWNLOAD_URL% ^
	-DBUILD_SHARED_LIBS=%ABSL_CMAKE_BUILD_SHARED% ^
	diff --git a/create_lts.py b/create_lts.py
	index 642b8847..8ad2b64f 100755
	--- a/create_lts.py
	+++ b/create_lts.py
	@@ -111,20 +111,21 @@ def main(argv):
	datestamp)
	})
	ReplaceStringsInFile(
	- 'CMakeLists.txt', {
	- 'project(absl LANGUAGES CXX)':
	+ 'CMakeLists.txt',
	+ {
	+ 'project(absl LANGUAGES CXX)': (
	'project(absl LANGUAGES CXX VERSION {})'.format(datestamp)
	- })
	- # Set the SOVERSION to YYMM.0.0 - The first 0 means we only have ABI
	- # compatible changes, and the second 0 means we can increment it to
	- # mark changes as ABI-compatible, for patch releases. Note that we
	- # only use the last two digits of the year and the month because the
	- # MacOS linker requires the first part of the SOVERSION to fit into
	- # 16 bits.
	- # https://www.sicpers.info/2013/03/how-to-version-a-mach-o-library/
	- ReplaceStringsInFile(
	- 'CMake/AbseilHelpers.cmake',
	- {'SOVERSION 0': 'SOVERSION "{}.0.0"'.format(datestamp[2:6])})
	+ ),
	+ # Set the SOVERSION to YYMM.0.0 - The first 0 means we only have ABI
	+ # compatible changes, and the second 0 means we can increment it to
	+ # mark changes as ABI-compatible, for patch releases. Note that we
	+ # only use the last two digits of the year and the month because the
	+ # MacOS linker requires the first part of the SOVERSION to fit into
	+ # 16 bits.
	+ # https://www.sicpers.info/2013/03/how-to-version-a-mach-o-library/
	+ 'ABSL_SOVERSION 0': 'ABSL_SOVERSION "{}.0.0"'.format(datestamp[2:6]),
	+ },
	+ )
	StripContentBetweenTags('CMakeLists.txt', '# absl:lts-remove-begin',
	'# absl:lts-remove-end')

	--
	2.45.2.505.gda0bf45e8d-goog