#
# Copyright 2017 The Abseil Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# https://github.com/google/oss-policies-info/blob/main/foundational-cxx-support-matrix.md
# As of 2022-09-06, CMake 3.10 is the minimum supported version.
cmake_minimum_required ( VERSION 3.10 )
# Compiler id for Apple Clang is now AppleClang.
if ( POLICY CMP0025 )
cmake_policy ( SET CMP0025 NEW )
endif ( POLICY CMP0025 )
# if command can use IN_LIST
if ( POLICY CMP0057 )
cmake_policy ( SET CMP0057 NEW )
endif ( POLICY CMP0057 )
# Project version variables are the empty string if version is unspecified
if ( POLICY CMP0048 )
cmake_policy ( SET CMP0048 NEW )
endif ( POLICY CMP0048 )
# option() honor variables
if ( POLICY CMP0077 )
cmake_policy ( SET CMP0077 NEW )
endif ( POLICY CMP0077 )
# Allow the user to specify the MSVC runtime
if ( POLICY CMP0091 )
cmake_policy ( SET CMP0091 NEW )
endif ( POLICY CMP0091 )
# try_compile() honors the CMAKE_CXX_STANDARD value
if ( POLICY CMP0067 )
cmake_policy ( SET CMP0067 NEW )
endif ( POLICY CMP0067 )
project ( absl LANGUAGES CXX )
include ( CTest )
# Output directory is correct by default for most build setups. However, when
# building Abseil as a DLL, it is important to have the DLL in the same
# directory as the executable using it. Thus, we put all executables in a single
# /bin directory.
set ( CMAKE_RUNTIME_OUTPUT_DIRECTORY ${ CMAKE_BINARY_DIR } /bin )
# when absl is included as subproject (i.e. using add_subdirectory(abseil-cpp))
# in the source tree of a project that uses it, install rules are disabled.
if ( NOT CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR )
option ( ABSL_ENABLE_INSTALL "Enable install rule" OFF )
else ( )
option ( ABSL_ENABLE_INSTALL "Enable install rule" ON )
endif ( )
option ( ABSL_PROPAGATE_CXX_STD
" U s e C M a k e C + + s t a n d a r d m e t a features ( e.g. cxx_std_14 ) t h a t p r o p a g a t e t o t a r g e t s t h a t l i n k t o A b s e i l "
O F F ) # TODO: Default to ON for CMake 3.8 and greater.
if ( ( ${ CMAKE_VERSION } VERSION_GREATER_EQUAL 3.8 ) AND ( NOT ABSL_PROPAGATE_CXX_STD ) )
message ( WARNING "A future Abseil release will default ABSL_PROPAGATE_CXX_STD to ON for CMake 3.8 and up. We recommend enabling this option to ensure your project still builds correctly." )
endif ( )
option ( ABSL_USE_SYSTEM_INCLUDES
" S i l e n c e w a r n i n g s i n A b s e i l h e a d e r s b y m a r k i n g t h e m a s S Y S T E M i n c l u d e s "
O F F )
list ( APPEND CMAKE_MODULE_PATH
$ { C M A K E _ C U R R E N T _ L I S T _ D I R } / C M a k e
$ { C M A K E _ C U R R E N T _ L I S T _ D I R } / a b s l / c o p t s
)
include ( CMakePackageConfigHelpers )
include ( GNUInstallDirs )
include ( AbseilDll )
include ( AbseilHelpers )
##
## Using absl targets
##
## all public absl targets are
## exported with the absl:: prefix
##
## e.g absl::base absl::synchronization absl::strings ....
##
## DO NOT rely on the internal targets outside of the prefix
# include current path
list ( APPEND ABSL_COMMON_INCLUDE_DIRS ${ CMAKE_CURRENT_SOURCE_DIR } )
if ( "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" )
set ( ABSL_USING_CLANG ON )
else ( )
set ( ABSL_USING_CLANG OFF )
endif ( )
# find dependencies
## pthread
find_package ( Threads REQUIRED )
include ( CMakeDependentOption )
option ( ABSL_BUILD_TESTING
" I f O N , A b s e i l w i l l b u i l d a l l o f A b s e i l ' s o w n t e s t s . " O F F )
option ( ABSL_BUILD_TEST_HELPERS
" I f O N , A b s e i l w i l l b u i l d l i b r a r i e s t h a t y o u c a n u s e t o w r i t e t e s t s a g a i n s t A b s e i l c o d e . T h i s o p t i o n r e q u i r e s t h a t A b s e i l i s c o n f i g u r e d t o u s e G o o g l e T e s t . "
O F F )
option ( ABSL_USE_EXTERNAL_GOOGLETEST
" I f O N , A b s e i l w i l l a s s u m e t h a t t h e t a r g e t s f o r G o o g l e T e s t a r e a l r e a d y p r o v i d e d b y t h e i n c l u d i n g p r o j e c t . T h i s m a k e s s e n s e w h e n A b s e i l i s u s e d w i t h a d d _ s u b d i r e c t o r y . " O F F )
cmake_dependent_option ( ABSL_FIND_GOOGLETEST
" I f O N , A b s e i l w i l l u s e find_package ( GTest ) r a t h e r t h a n a s s u m i n g t h a t G o o g l e T e s t i s a l r e a d y p r o v i d e d b y t h e i n c l u d i n g p r o j e c t . "
O N
" A B S L _ U S E _ E X T E R N A L _ G O O G L E T E S T "
O F F )
option ( ABSL_USE_GOOGLETEST_HEAD
" I f O N , a b s e i l w i l l d o w n l o a d H E A D f r o m G o o g l e T e s t a t c o n f i g t i m e . " O F F )
set ( ABSL_GOOGLETEST_DOWNLOAD_URL "" CACHE STRING "If set, download GoogleTest from this URL" )
set ( ABSL_LOCAL_GOOGLETEST_DIR "/usr/src/googletest" CACHE PATH
" I f A B S L _ U S E _ G O O G L E T E S T _ H E A D i s O F F a n d A B S L _ G O O G L E T E S T _ U R L i s n o t s e t , s p e c i f i e s t h e d i r e c t o r y o f a l o c a l G o o g l e T e s t c h e c k o u t . "
)
if ( ( BUILD_TESTING AND ABSL_BUILD_TESTING ) OR ABSL_BUILD_TEST_HELPERS )
## check targets
if ( ABSL_USE_EXTERNAL_GOOGLETEST )
if ( ABSL_FIND_GOOGLETEST )
find_package ( GTest REQUIRED )
elseif ( NOT TARGET GTest::gtest )
if ( TARGET gtest )
# When Google Test is included directly rather than through find_package, the aliases are missing.
add_library ( GTest::gtest ALIAS gtest )
add_library ( GTest::gtest_main ALIAS gtest_main )
add_library ( GTest::gmock ALIAS gmock )
add_library ( GTest::gmock_main ALIAS gmock_main )
else ( )
message ( FATAL_ERROR "ABSL_USE_EXTERNAL_GOOGLETEST is ON and ABSL_FIND_GOOGLETEST is OFF, which means that the top-level project must build the Google Test project. However, the target gtest was not found." )
endif ( )
endif ( )
else ( )
set ( absl_gtest_build_dir ${ CMAKE_BINARY_DIR } /googletest-build )
if ( ABSL_USE_GOOGLETEST_HEAD AND ABSL_GOOGLETEST_DOWNLOAD_URL )
message ( FATAL_ERROR "Do not set both ABSL_USE_GOOGLETEST_HEAD and ABSL_GOOGLETEST_DOWNLOAD_URL" )
endif ( )
if ( ABSL_USE_GOOGLETEST_HEAD )
set ( absl_gtest_download_url "https://github.com/google/googletest/archive/main.zip" )
elseif ( ABSL_GOOGLETEST_DOWNLOAD_URL )
set ( absl_gtest_download_url ${ ABSL_GOOGLETEST_DOWNLOAD_URL } )
endif ( )
if ( absl_gtest_download_url )
set ( absl_gtest_src_dir ${ CMAKE_BINARY_DIR } /googletest-src )
else ( )
set ( absl_gtest_src_dir ${ ABSL_LOCAL_GOOGLETEST_DIR } )
endif ( )
include ( CMake/Googletest/DownloadGTest.cmake )
endif ( )
check_target ( GTest::gtest )
check_target ( GTest::gtest_main )
check_target ( GTest::gmock )
check_target ( GTest::gmock_main )
endif ( )
add_subdirectory ( absl )
if ( ABSL_ENABLE_INSTALL )
# absl:lts-remove-begin(system installation is supported for LTS releases)
# We don't support system-wide installation
list ( APPEND SYSTEM_INSTALL_DIRS "/usr/local" "/usr" "/opt/" "/opt/local" "c:/Program Files/${PROJECT_NAME}" )
if ( NOT DEFINED CMAKE_INSTALL_PREFIX OR CMAKE_INSTALL_PREFIX IN_LIST SYSTEM_INSTALL_DIRS )
message ( WARNING " \
T h e d e f a u l t a n d s y s t e m - l e v e l i n s t a l l d i r e c t o r i e s a r e u n s u p p o r t e d e x c e p t i n L T S \
r e l e a s e s o f A b s e i l . P l e a s e s e t C M A K E _ I N S T A L L _ P R E F I X t o i n s t a l l A b s e i l i n y o u r \
s o u r c e o r b u i l d t r e e d i r e c t l y . \
" )
endif ( )
# absl:lts-remove-end
# install as a subdirectory only
install ( EXPORT ${ PROJECT_NAME } Targets
N A M E S P A C E a b s l : :
D E S T I N A T I O N " $ { C M A K E _ I N S T A L L _ L I B D I R } / c m a k e / $ { P R O J E C T _ N A M E } "
)
configure_package_config_file (
C M a k e / a b s l C o n f i g . c m a k e . i n
" $ { P R O J E C T _ B I N A R Y _ D I R } / $ { P R O J E C T _ N A M E } C o n f i g . c m a k e "
I N S T A L L _ D E S T I N A T I O N " $ { C M A K E _ I N S T A L L _ L I B D I R } / c m a k e / $ { P R O J E C T _ N A M E } "
)
install ( FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
D E S T I N A T I O N " $ { C M A K E _ I N S T A L L _ L I B D I R } / c m a k e / $ { P R O J E C T _ N A M E } "
)
# Abseil only has a version in LTS releases. This mechanism is accomplished
# Abseil's internal Copybara (https://github.com/google/copybara) workflows and
# isn't visible in the CMake buildsystem itself.
if ( absl_VERSION )
write_basic_package_version_file (
" $ { P R O J E C T _ B I N A R Y _ D I R } / $ { P R O J E C T _ N A M E } C o n f i g V e r s i o n . c m a k e "
C O M P A T I B I L I T Y E x a c t V e r s i o n
)
install ( FILES "${PROJECT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
D E S T I N A T I O N " $ { C M A K E _ I N S T A L L _ L I B D I R } / c m a k e / $ { P R O J E C T _ N A M E } "
)
endif ( ) # absl_VERSION
install ( DIRECTORY absl
D E S T I N A T I O N $ { C M A K E _ I N S T A L L _ I N C L U D E D I R }
F I L E S _ M A T C H I N G
P A T T E R N " * . i n c "
P A T T E R N " * . h "
P A T T E R N " c o p t s " E X C L U D E
P A T T E R N " t e s t d a t a " E X C L U D E
Export of internal Abseil changes
--
b2b94b9f533e4f9ae2a2df9de56ccb3b18f31d0d by Gennadiy Rozental <rogeeff@google.com>:
Internal change
PiperOrigin-RevId: 314366138
--
7a5ac6be82741aec5b327d7b67efd14d69deed6a by Gennadiy Rozental <rogeeff@google.com>:
Introduce Abseil prefixed dynamic annotation macros.
PiperOrigin-RevId: 314228914
--
33e7c605cb1be9bd48bd3590b1eedccd68d3bd1b by Gennadiy Rozental <rogeeff@google.com>:
Fixing missing includes and remove unnecessary ones.
PiperOrigin-RevId: 314217909
--
6a3c5c26bfa13317bf0a880f13d0e4be0b971b76 by Gennadiy Rozental <rogeeff@google.com>:
Import of CCTZ from GitHub.
PiperOrigin-RevId: 314209576
--
f7795aa68020af4a6b4905531ba951e04b88966a by Abseil Team <absl-team@google.com>:
absl::FormatTime() and absl::ParseTime() format specifiers:
- %EZ now accepts 'z' in addition to 'Z' as a synonym for +00:00.
- %ET is introduced, producing 'T' on output, and accepting 'T'
or 't' on input. This is for the RFC3339 date-time separator.
PiperOrigin-RevId: 313945137
--
87c437ce3aab3f59a7546e44a28cd1c8aaa152c3 by Laramie Leavitt <lar@google.com>:
Rollback
PiperOrigin-RevId: 313868206
--
8049b74349486a0026932b86d29c380b195e1cba by Laramie Leavitt <lar@google.com>:
Remove the MockingBitGenBase base class in favor of type-erasure in BitGenRef.
In Abseil random, mocking was split across two different classes,
MockingBitGenBase and MockingBitGen. This split existed because Google Mock is a
test-only library that we don't link into production, so MockingBitGenBase
provided a low-overhead scaffold used to lookup mocks when in test code, but
which is unused in production code.
That has been replaced by type-erasure which looks for a method named
CallImpl with the correct signature.
Weaken the coupling between MockingBitGen, DistributionCaller, and MockOverloadSet.
Rename CallImpl to InvokeMock()
Previously, the implementation of DistributionCaller was also split across different files using explicit instantiation of the DistributionCaller struct and some details in the Mocking classes. Now Distribution caller uses the presence of the InvokeMock() method to choose whether to use the mockable call path or the default call path.
PiperOrigin-RevId: 313848695
--
1741d80e08050e1939605f70ca6ff64809785c85 by Gennadiy Rozental <rogeeff@google.com>:
Introduce public interface to access reflection handle corresponding the flag.
This interface will be the only official way to access flag reflection information from the flag object. The other internal methods will eventually disappear.
PiperOrigin-RevId: 313734006
--
c375bead457de29d9c29595d16c66d3e5125b585 by Abseil Team <absl-team@google.com>:
Improve documentation of absl::c_partial_sort_copy.
This function takes no middle parameter, instead using the size of the result
container to determine the size of the partial sort.
PiperOrigin-RevId: 313656062
--
bbc759d43656b1b996ad558f23c852a9f14129d2 by Gennadiy Rozental <rogeeff@google.com>:
Eliminate dynamic annotation symbols in the library.
PiperOrigin-RevId: 313650817
GitOrigin-RevId: b2b94b9f533e4f9ae2a2df9de56ccb3b18f31d0d
Change-Id: Ic7a11bbcb723f3ff6a7e2f214bff0a92c6f8ab4d
5 years ago
)
file ( READ "absl/base/options.h" ABSL_INTERNAL_OPTIONS_H_CONTENTS )
if ( ABSL_INTERNAL_AT_LEAST_CXX17 )
string ( REGEX REPLACE
" #define ABSL_OPTION_USE_STD_([^ ]*) 2"
" #define ABSL_OPTION_USE_STD_\\1 1"
A B S L _ I N T E R N A L _ O P T I O N S _ H _ P I N N E D
" $ { A B S L _ I N T E R N A L _ O P T I O N S _ H _ C O N T E N T S } " )
else ( )
string ( REGEX REPLACE
" #define ABSL_OPTION_USE_STD_([^ ]*) 2"
" #define ABSL_OPTION_USE_STD_\\1 0"
A B S L _ I N T E R N A L _ O P T I O N S _ H _ P I N N E D
" $ { A B S L _ I N T E R N A L _ O P T I O N S _ H _ C O N T E N T S } " )
endif ( )
file ( WRITE "${CMAKE_BINARY_DIR}/options-pinned.h" "${ABSL_INTERNAL_OPTIONS_H_PINNED}" )
install ( FILES "${CMAKE_BINARY_DIR}/options-pinned.h"
D E S T I N A T I O N $ { C M A K E _ I N S T A L L _ I N C L U D E D I R } / a b s l / b a s e
R E N A M E " o p t i o n s . h " )
endif ( ) # ABSL_ENABLE_INSTALL
