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FindBoost.cmake
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindBoost
---------
Find Boost include dirs and libraries
Use this module by invoking :command:`find_package` with the form:
.. code-block:: cmake
find_package(Boost
[version] [EXACT] # Minimum or EXACT version e.g. 1.67.0
[REQUIRED] # Fail with error if Boost is not found
[COMPONENTS <libs>...] # Boost libraries by their canonical name
# e.g. "date_time" for "libboost_date_time"
[OPTIONAL_COMPONENTS <libs>...]
# Optional Boost libraries by their canonical name)
) # e.g. "date_time" for "libboost_date_time"
This module finds headers and requested component libraries OR a CMake
package configuration file provided by a "Boost CMake" build. For the
latter case skip to the :ref:`Boost CMake` section below.
.. versionadded:: 3.7
``bzip2`` and ``zlib`` components (Windows only).
.. versionadded:: 3.11
The ``OPTIONAL_COMPONENTS`` option.
.. versionadded:: 3.13
``stacktrace_*`` components.
.. versionadded:: 3.19
``bzip2`` and ``zlib`` components on all platforms.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``Boost_FOUND``
True if headers and requested libraries were found.
``Boost_INCLUDE_DIRS``
Boost include directories.
``Boost_LIBRARY_DIRS``
Link directories for Boost libraries.
``Boost_LIBRARIES``
Boost component libraries to be linked.
``Boost_<COMPONENT>_FOUND``
True if component ``<COMPONENT>`` was found (``<COMPONENT>`` name is upper-case).
``Boost_<COMPONENT>_LIBRARY``
Libraries to link for component ``<COMPONENT>`` (may include
:command:`target_link_libraries` debug/optimized keywords).
``Boost_VERSION_MACRO``
``BOOST_VERSION`` value from ``boost/version.hpp``.
``Boost_VERSION_STRING``
Boost version number in ``X.Y.Z`` format.
``Boost_VERSION``
Boost version number in ``X.Y.Z`` format (same as ``Boost_VERSION_STRING``).
.. versionchanged:: 3.15
In previous CMake versions, this variable used the raw version string
from the Boost header (same as ``Boost_VERSION_MACRO``).
See policy :policy:`CMP0093`.
``Boost_LIB_VERSION``
Version string appended to library filenames.
``Boost_VERSION_MAJOR``, ``Boost_MAJOR_VERSION``
Boost major version number (``X`` in ``X.Y.Z``).
``Boost_VERSION_MINOR``, ``Boost_MINOR_VERSION``
Boost minor version number (``Y`` in ``X.Y.Z``).
``Boost_VERSION_PATCH``, ``Boost_SUBMINOR_VERSION``
Boost subminor version number (``Z`` in ``X.Y.Z``).
``Boost_VERSION_COUNT``
Amount of version components (3).
``Boost_LIB_DIAGNOSTIC_DEFINITIONS`` (Windows-specific)
Pass to :command:`add_definitions` to have diagnostic
information about Boost's automatic linking
displayed during compilation
.. versionadded:: 3.15
The ``Boost_VERSION_<PART>`` variables.
Cache variables
^^^^^^^^^^^^^^^
Search results are saved persistently in CMake cache entries:
``Boost_INCLUDE_DIR``
Directory containing Boost headers.
``Boost_LIBRARY_DIR_RELEASE``
Directory containing release Boost libraries.
``Boost_LIBRARY_DIR_DEBUG``
Directory containing debug Boost libraries.
``Boost_<COMPONENT>_LIBRARY_DEBUG``
Component ``<COMPONENT>`` library debug variant.
``Boost_<COMPONENT>_LIBRARY_RELEASE``
Component ``<COMPONENT>`` library release variant.
.. versionadded:: 3.3
Per-configuration variables ``Boost_LIBRARY_DIR_RELEASE`` and
``Boost_LIBRARY_DIR_DEBUG``.
Hints
^^^^^
This module reads hints about search locations from variables:
``BOOST_ROOT``, ``BOOSTROOT``
Preferred installation prefix.
``BOOST_INCLUDEDIR``
Preferred include directory e.g. ``<prefix>/include``.
``BOOST_LIBRARYDIR``
Preferred library directory e.g. ``<prefix>/lib``.
``Boost_NO_SYSTEM_PATHS``
Set to ``ON`` to disable searching in locations not
specified by these hint variables. Default is ``OFF``.
``Boost_ADDITIONAL_VERSIONS``
List of Boost versions not known to this module.
(Boost install locations may contain the version).
Users may set these hints or results as ``CACHE`` entries. Projects
should not read these entries directly but instead use the above
result variables. Note that some hint names start in upper-case
``BOOST``. One may specify these as environment variables if they are
not specified as CMake variables or cache entries.
This module first searches for the Boost header files using the above
hint variables (excluding ``BOOST_LIBRARYDIR``) and saves the result in
``Boost_INCLUDE_DIR``. Then it searches for requested component libraries
using the above hints (excluding ``BOOST_INCLUDEDIR`` and
``Boost_ADDITIONAL_VERSIONS``), "lib" directories near ``Boost_INCLUDE_DIR``,
and the library name configuration settings below. It saves the
library directories in ``Boost_LIBRARY_DIR_DEBUG`` and
``Boost_LIBRARY_DIR_RELEASE`` and individual library
locations in ``Boost_<COMPONENT>_LIBRARY_DEBUG`` and ``Boost_<COMPONENT>_LIBRARY_RELEASE``.
When one changes settings used by previous searches in the same build
tree (excluding environment variables) this module discards previous
search results affected by the changes and searches again.
Imported Targets
^^^^^^^^^^^^^^^^
.. versionadded:: 3.5
This module defines the following :prop_tgt:`IMPORTED` targets:
``Boost::boost``
Target for header-only dependencies. (Boost include directory).
``Boost::headers``
.. versionadded:: 3.15
Alias for ``Boost::boost``.
``Boost::<component>``
Target for specific component dependency (shared or static library);
``<component>`` name is lower-case.
``Boost::diagnostic_definitions``
Interface target to enable diagnostic information about Boost's automatic
linking during compilation (adds ``-DBOOST_LIB_DIAGNOSTIC``).
``Boost::disable_autolinking``
Interface target to disable automatic linking with MSVC
(adds ``-DBOOST_ALL_NO_LIB``).
``Boost::dynamic_linking``
Interface target to enable dynamic linking with MSVC
(adds ``-DBOOST_ALL_DYN_LINK``).
Implicit dependencies such as ``Boost::filesystem`` requiring
``Boost::system`` will be automatically detected and satisfied, even
if system is not specified when using :command:`find_package` and if
``Boost::system`` is not added to :command:`target_link_libraries`. If using
``Boost::thread``, then ``Threads::Threads`` will also be added automatically.
It is important to note that the imported targets behave differently
than variables created by this module: multiple calls to
:command:`find_package(Boost)` in the same directory or sub-directories with
different options (e.g. static or shared) will not override the
values of the targets created by the first call.
Other Variables
^^^^^^^^^^^^^^^
Boost libraries come in many variants encoded in their file name.
Users or projects may tell this module which variant to find by
setting variables:
``Boost_USE_DEBUG_LIBS``
.. versionadded:: 3.10
Set to ``ON`` or ``OFF`` to specify whether to search and use the debug
libraries. Default is ``ON``.
``Boost_USE_RELEASE_LIBS``
.. versionadded:: 3.10
Set to ``ON`` or ``OFF`` to specify whether to search and use the release
libraries. Default is ``ON``.
``Boost_USE_MULTITHREADED``
Set to OFF to use the non-multithreaded libraries ("mt" tag). Default is
``ON``.
``Boost_USE_STATIC_LIBS``
Set to ON to force the use of the static libraries. Default is ``OFF``.
``Boost_USE_STATIC_RUNTIME``
Set to ``ON`` or ``OFF`` to specify whether to use libraries linked
statically to the C++ runtime ("s" tag). Default is platform dependent.
``Boost_USE_DEBUG_RUNTIME``
Set to ``ON`` or ``OFF`` to specify whether to use libraries linked to the
MS debug C++ runtime ("g" tag). Default is ``ON``.
``Boost_USE_DEBUG_PYTHON``
Set to ``ON`` to use libraries compiled with a debug Python build ("y"
tag). Default is ``OFF``.
``Boost_USE_STLPORT``
Set to ``ON`` to use libraries compiled with STLPort ("p" tag). Default is
``OFF``.
``Boost_USE_STLPORT_DEPRECATED_NATIVE_IOSTREAMS``
Set to ON to use libraries compiled with STLPort deprecated "native
iostreams" ("n" tag). Default is ``OFF``.
``Boost_COMPILER``
Set to the compiler-specific library suffix (e.g. ``-gcc43``). Default is
auto-computed for the C++ compiler in use.
.. versionchanged:: 3.9
A list may be used if multiple compatible suffixes should be tested for,
in decreasing order of preference.
``Boost_LIB_PREFIX``
.. versionadded:: 3.18
Set to the platform-specific library name prefix (e.g. ``lib``) used by
Boost static libs. This is needed only on platforms where CMake does not
know the prefix by default.
``Boost_ARCHITECTURE``
.. versionadded:: 3.13
Set to the architecture-specific library suffix (e.g. ``-x64``).
Default is auto-computed for the C++ compiler in use.
``Boost_THREADAPI``
Suffix for ``thread`` component library name, such as ``pthread`` or
``win32``. Names with and without this suffix will both be tried.
``Boost_NAMESPACE``
Alternate namespace used to build boost with e.g. if set to ``myboost``,
will search for ``myboost_thread`` instead of ``boost_thread``.
Other variables one may set to control this module are:
``Boost_DEBUG``
Set to ``ON`` to enable debug output from ``FindBoost``.
Please enable this before filing any bug report.
``Boost_REALPATH``
Set to ``ON`` to resolve symlinks for discovered libraries to assist with
packaging. For example, the "system" component library may be resolved to
``/usr/lib/libboost_system.so.1.67.0`` instead of
``/usr/lib/libboost_system.so``. This does not affect linking and should
not be enabled unless the user needs this information.
``Boost_LIBRARY_DIR``
Default value for ``Boost_LIBRARY_DIR_RELEASE`` and
``Boost_LIBRARY_DIR_DEBUG``.
``Boost_NO_WARN_NEW_VERSIONS``
.. versionadded:: 3.20
Set to ``ON`` to suppress the warning about unknown dependencies for new
Boost versions.
On Visual Studio and Borland compilers Boost headers request automatic
linking to corresponding libraries. This requires matching libraries
to be linked explicitly or available in the link library search path.
In this case setting ``Boost_USE_STATIC_LIBS`` to ``OFF`` may not achieve
dynamic linking. Boost automatic linking typically requests static
libraries with a few exceptions (such as ``Boost.Python``). Use:
.. code-block:: cmake
add_definitions(${Boost_LIB_DIAGNOSTIC_DEFINITIONS})
to ask Boost to report information about automatic linking requests.
Examples
^^^^^^^^
Find Boost headers only:
.. code-block:: cmake
find_package(Boost 1.36.0)
if(Boost_FOUND)
include_directories(${Boost_INCLUDE_DIRS})
add_executable(foo foo.cc)
endif()
Find Boost libraries and use imported targets:
.. code-block:: cmake
find_package(Boost 1.56 REQUIRED COMPONENTS
date_time filesystem iostreams)
add_executable(foo foo.cc)
target_link_libraries(foo Boost::date_time Boost::filesystem
Boost::iostreams)
Find Boost Python 3.6 libraries and use imported targets:
.. code-block:: cmake
find_package(Boost 1.67 REQUIRED COMPONENTS
python36 numpy36)
add_executable(foo foo.cc)
target_link_libraries(foo Boost::python36 Boost::numpy36)
Find Boost headers and some *static* (release only) libraries:
.. code-block:: cmake
set(Boost_USE_STATIC_LIBS ON) # only find static libs
set(Boost_USE_DEBUG_LIBS OFF) # ignore debug libs and
set(Boost_USE_RELEASE_LIBS ON) # only find release libs
set(Boost_USE_MULTITHREADED ON)
set(Boost_USE_STATIC_RUNTIME OFF)
find_package(Boost 1.66.0 COMPONENTS date_time filesystem system ...)
if(Boost_FOUND)
include_directories(${Boost_INCLUDE_DIRS})
add_executable(foo foo.cc)
target_link_libraries(foo ${Boost_LIBRARIES})
endif()
.. _`Boost CMake`:
Boost CMake
^^^^^^^^^^^
If Boost was built using the boost-cmake project or from Boost 1.70.0 on
it provides a package configuration file for use with find_package's config mode.
This module looks for the package configuration file called
``BoostConfig.cmake`` or ``boost-config.cmake`` and stores the result in
``CACHE`` entry ``Boost_DIR``. If found, the package configuration file is loaded
and this module returns with no further action. See documentation of
the Boost CMake package configuration for details on what it provides.
Set ``Boost_NO_BOOST_CMAKE`` to ``ON``, to disable the search for boost-cmake.
#]=======================================================================]
# The FPHSA helper provides standard way of reporting final search results to
# the user including the version and component checks.
include(FindPackageHandleStandardArgs)
# Save project's policies
cmake_policy(PUSH)
cmake_policy(SET CMP0057 NEW) # if IN_LIST
if(POLICY CMP0102)
cmake_policy(SET CMP0102 NEW) # if mark_as_advanced(non_cache_var)
endif()
function(_boost_get_existing_target component target_var)
set(names "${component}")
if(component MATCHES "^([a-z_]*)(python|numpy)([1-9])\\.?([0-9])?$")
# handle pythonXY and numpyXY versioned components and also python X.Y, mpi_python etc.
list(APPEND names
"${CMAKE_MATCH_1}${CMAKE_MATCH_2}" # python
"${CMAKE_MATCH_1}${CMAKE_MATCH_2}${CMAKE_MATCH_3}" # pythonX
"${CMAKE_MATCH_1}${CMAKE_MATCH_2}${CMAKE_MATCH_3}${CMAKE_MATCH_4}" #pythonXY
)
endif()
# https://github.com/boost-cmake/boost-cmake uses boost::file_system etc.
# So handle similar constructions of target names
string(TOLOWER "${component}" lower_component)
list(APPEND names "${lower_component}")
foreach(prefix Boost boost)
foreach(name IN LISTS names)
if(TARGET "${prefix}::${name}")
# The target may be an INTERFACE library that wraps around a single other
# target for compatibility. Unwrap this layer so we can extract real info.
if("${name}" MATCHES "^(python|numpy|mpi_python)([1-9])([0-9])$")
set(name_nv "${CMAKE_MATCH_1}")
if(TARGET "${prefix}::${name_nv}")
get_property(type TARGET "${prefix}::${name}" PROPERTY TYPE)
if(type STREQUAL "INTERFACE_LIBRARY")
get_property(lib TARGET "${prefix}::${name}" PROPERTY INTERFACE_LINK_LIBRARIES)
if("${lib}" STREQUAL "${prefix}::${name_nv}")
set(${target_var} "${prefix}::${name_nv}" PARENT_SCOPE)
return()
endif()
endif()
endif()
endif()
set(${target_var} "${prefix}::${name}" PARENT_SCOPE)
return()
endif()
endforeach()
endforeach()
set(${target_var} "" PARENT_SCOPE)
endfunction()
function(_boost_get_canonical_target_name component target_var)
string(TOLOWER "${component}" component)
if(component MATCHES "^([a-z_]*)(python|numpy)([1-9])\\.?([0-9])?$")
# handle pythonXY and numpyXY versioned components and also python X.Y, mpi_python etc.
set(${target_var} "Boost::${CMAKE_MATCH_1}${CMAKE_MATCH_2}" PARENT_SCOPE)
else()
set(${target_var} "Boost::${component}" PARENT_SCOPE)
endif()
endfunction()
macro(_boost_set_in_parent_scope name value)
# Set a variable in parent scope and make it visible in current scope
set(${name} "${value}" PARENT_SCOPE)
set(${name} "${value}")
endmacro()
macro(_boost_set_if_unset name value)
if(NOT ${name})
_boost_set_in_parent_scope(${name} "${value}")
endif()
endmacro()
macro(_boost_set_cache_if_unset name value)
if(NOT ${name})
set(${name} "${value}" CACHE STRING "" FORCE)
endif()
endmacro()
macro(_boost_append_include_dir target)
get_target_property(inc "${target}" INTERFACE_INCLUDE_DIRECTORIES)
if(inc)
list(APPEND include_dirs "${inc}")
endif()
endmacro()
function(_boost_set_legacy_variables_from_config)
# Set legacy variables for compatibility if not set
set(include_dirs "")
set(library_dirs "")
set(libraries "")
# Header targets Boost::headers or Boost::boost
foreach(comp headers boost)
_boost_get_existing_target(${comp} target)
if(target)
_boost_append_include_dir("${target}")
endif()
endforeach()
# Library targets
foreach(comp IN LISTS Boost_FIND_COMPONENTS)
string(TOUPPER ${comp} uppercomp)
# Overwrite if set
_boost_set_in_parent_scope(Boost_${uppercomp}_FOUND "${Boost_${comp}_FOUND}")
if(Boost_${comp}_FOUND)
_boost_get_existing_target(${comp} target)
if(NOT target)
if(Boost_DEBUG OR Boost_VERBOSE)
message(WARNING "Could not find imported target for required component '${comp}'. Legacy variables for this component might be missing. Refer to the documentation of your Boost installation for help on variables to use.")
endif()
continue()
endif()
_boost_append_include_dir("${target}")
_boost_set_if_unset(Boost_${uppercomp}_LIBRARY "${target}")
_boost_set_if_unset(Boost_${uppercomp}_LIBRARIES "${target}") # Very old legacy variable
list(APPEND libraries "${target}")
get_property(type TARGET "${target}" PROPERTY TYPE)
if(NOT type STREQUAL "INTERFACE_LIBRARY")
foreach(cfg RELEASE DEBUG)
get_target_property(lib ${target} IMPORTED_LOCATION_${cfg})
if(lib)
get_filename_component(lib_dir "${lib}" DIRECTORY)
list(APPEND library_dirs ${lib_dir})
_boost_set_cache_if_unset(Boost_${uppercomp}_LIBRARY_${cfg} "${lib}")
endif()
endforeach()
elseif(Boost_DEBUG OR Boost_VERBOSE)
# For projects using only the Boost::* targets this warning can be safely ignored.
message(WARNING "Imported target '${target}' for required component '${comp}' has no artifact. Legacy variables for this component might be missing. Refer to the documentation of your Boost installation for help on variables to use.")
endif()
_boost_get_canonical_target_name("${comp}" canonical_target)
if(NOT TARGET "${canonical_target}")
add_library("${canonical_target}" INTERFACE IMPORTED)
target_link_libraries("${canonical_target}" INTERFACE "${target}")
endif()
endif()
endforeach()
list(REMOVE_DUPLICATES include_dirs)
list(REMOVE_DUPLICATES library_dirs)
_boost_set_if_unset(Boost_INCLUDE_DIRS "${include_dirs}")
_boost_set_if_unset(Boost_LIBRARY_DIRS "${library_dirs}")
_boost_set_if_unset(Boost_LIBRARIES "${libraries}")
_boost_set_if_unset(Boost_VERSION_STRING "${Boost_VERSION_MAJOR}.${Boost_VERSION_MINOR}.${Boost_VERSION_PATCH}")
find_path(Boost_INCLUDE_DIR
NAMES boost/version.hpp boost/config.hpp
HINTS ${Boost_INCLUDE_DIRS}
NO_DEFAULT_PATH
)
if(NOT Boost_VERSION_MACRO OR NOT Boost_LIB_VERSION)
set(version_file ${Boost_INCLUDE_DIR}/boost/version.hpp)
if(EXISTS "${version_file}")
file(STRINGS "${version_file}" contents REGEX "#define BOOST_(LIB_)?VERSION ")
if(contents MATCHES "#define BOOST_VERSION ([0-9]+)")
_boost_set_if_unset(Boost_VERSION_MACRO "${CMAKE_MATCH_1}")
endif()
if(contents MATCHES "#define BOOST_LIB_VERSION \"([0-9_]+)\"")
_boost_set_if_unset(Boost_LIB_VERSION "${CMAKE_MATCH_1}")
endif()
endif()
endif()
_boost_set_if_unset(Boost_MAJOR_VERSION ${Boost_VERSION_MAJOR})
_boost_set_if_unset(Boost_MINOR_VERSION ${Boost_VERSION_MINOR})
_boost_set_if_unset(Boost_SUBMINOR_VERSION ${Boost_VERSION_PATCH})
if(WIN32)
_boost_set_if_unset(Boost_LIB_DIAGNOSTIC_DEFINITIONS "-DBOOST_LIB_DIAGNOSTIC")
endif()
if(NOT TARGET Boost::headers)
add_library(Boost::headers INTERFACE IMPORTED)
target_include_directories(Boost::headers INTERFACE ${Boost_INCLUDE_DIRS})
endif()
# Legacy targets w/o functionality as all handled by defined targets
foreach(lib diagnostic_definitions disable_autolinking dynamic_linking)
if(NOT TARGET Boost::${lib})
add_library(Boost::${lib} INTERFACE IMPORTED)
endif()
endforeach()
if(NOT TARGET Boost::boost)
add_library(Boost::boost INTERFACE IMPORTED)
target_link_libraries(Boost::boost INTERFACE Boost::headers)
endif()
endfunction()
#-------------------------------------------------------------------------------
# Before we go searching, check whether a boost cmake package is available, unless
# the user specifically asked NOT to search for one.
#
# If Boost_DIR is set, this behaves as any find_package call would. If not,
# it looks at BOOST_ROOT and BOOSTROOT to find Boost.
#
if (NOT Boost_NO_BOOST_CMAKE)
# If Boost_DIR is not set, look for BOOSTROOT and BOOST_ROOT as alternatives,
# since these are more conventional for Boost.
if ("$ENV{Boost_DIR}" STREQUAL "")
if (NOT "$ENV{BOOST_ROOT}" STREQUAL "")
set(ENV{Boost_DIR} $ENV{BOOST_ROOT})
elseif (NOT "$ENV{BOOSTROOT}" STREQUAL "")
set(ENV{Boost_DIR} $ENV{BOOSTROOT})
endif()
endif()
set(_boost_FIND_PACKAGE_ARGS "")
if(Boost_NO_SYSTEM_PATHS)
list(APPEND _boost_FIND_PACKAGE_ARGS NO_CMAKE_SYSTEM_PATH NO_SYSTEM_ENVIRONMENT_PATH)
endif()
# Do the same find_package call but look specifically for the CMake version.
# Note that args are passed in the Boost_FIND_xxxxx variables, so there is no
# need to delegate them to this find_package call.
cmake_policy(PUSH)
if(BOOST_ROOT AND NOT Boost_ROOT)
# Honor BOOST_ROOT by setting Boost_ROOT with CMP0074 NEW behavior.
if(POLICY CMP0074)
cmake_policy(SET CMP0074 NEW)
endif()
set(Boost_ROOT "${BOOST_ROOT}")
endif()
find_package(Boost QUIET NO_MODULE ${_boost_FIND_PACKAGE_ARGS})
cmake_policy(POP)
if (DEFINED Boost_DIR)
mark_as_advanced(Boost_DIR)
endif ()
# If we found a boost cmake package, then we're done. Print out what we found.
# Otherwise let the rest of the module try to find it.
if(Boost_FOUND)
# Convert component found variables to standard variables if required
# Necessary for legacy boost-cmake and 1.70 builtin BoostConfig
if(Boost_FIND_COMPONENTS)
# Ignore the meta-component "ALL", introduced by Boost 1.73
list(REMOVE_ITEM Boost_FIND_COMPONENTS "ALL")
foreach(_comp IN LISTS Boost_FIND_COMPONENTS)
if(DEFINED Boost_${_comp}_FOUND)
continue()
endif()
string(TOUPPER ${_comp} _uppercomp)
if(DEFINED Boost${_comp}_FOUND) # legacy boost-cmake project
set(Boost_${_comp}_FOUND ${Boost${_comp}_FOUND})
elseif(DEFINED Boost_${_uppercomp}_FOUND) # Boost 1.70
set(Boost_${_comp}_FOUND ${Boost_${_uppercomp}_FOUND})
endif()
endforeach()
endif()
find_package_handle_standard_args(Boost HANDLE_COMPONENTS CONFIG_MODE)
_boost_set_legacy_variables_from_config()
# Restore project's policies
cmake_policy(POP)
return()
endif()
endif()
#-------------------------------------------------------------------------------
# FindBoost functions & macros
#
#
# Print debug text if Boost_DEBUG is set.
# Call example:
# _Boost_DEBUG_PRINT("${CMAKE_CURRENT_LIST_FILE}" "${CMAKE_CURRENT_LIST_LINE}" "debug message")
#
function(_Boost_DEBUG_PRINT file line text)
if(Boost_DEBUG)
message(STATUS "[ ${file}:${line} ] ${text}")
endif()
endfunction()
#
# _Boost_DEBUG_PRINT_VAR(file line variable_name [ENVIRONMENT]
# [SOURCE "short explanation of origin of var value"])
#
# ENVIRONMENT - look up environment variable instead of CMake variable
#
# Print variable name and its value if Boost_DEBUG is set.
# Call example:
# _Boost_DEBUG_PRINT_VAR("${CMAKE_CURRENT_LIST_FILE}" "${CMAKE_CURRENT_LIST_LINE}" BOOST_ROOT)
#
function(_Boost_DEBUG_PRINT_VAR file line name)
if(Boost_DEBUG)
cmake_parse_arguments(_args "ENVIRONMENT" "SOURCE" "" ${ARGN})
unset(source)
if(_args_SOURCE)
set(source " (${_args_SOURCE})")
endif()
if(_args_ENVIRONMENT)
if(DEFINED ENV{${name}})
set(value "\"$ENV{${name}}\"")
else()
set(value "<unset>")
endif()
set(_name "ENV{${name}}")
else()
if(DEFINED "${name}")
set(value "\"${${name}}\"")
else()
set(value "<unset>")
endif()
set(_name "${name}")
endif()
_Boost_DEBUG_PRINT("${file}" "${line}" "${_name} = ${value}${source}")
endif()
endfunction()
############################################
#
# Check the existence of the libraries.
#
############################################
# This macro was taken directly from the FindQt4.cmake file that is included
# with the CMake distribution. This is NOT my work. All work was done by the
# original authors of the FindQt4.cmake file. Only minor modifications were
# made to remove references to Qt and make this file more generally applicable
# And ELSE/ENDIF pairs were removed for readability.
#########################################################################
macro(_Boost_ADJUST_LIB_VARS basename)
if(Boost_INCLUDE_DIR )
if(Boost_${basename}_LIBRARY_DEBUG AND Boost_${basename}_LIBRARY_RELEASE)
# if the generator is multi-config or if CMAKE_BUILD_TYPE is set for
# single-config generators, set optimized and debug libraries
get_property(_isMultiConfig GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
if(_isMultiConfig OR CMAKE_BUILD_TYPE)
set(Boost_${basename}_LIBRARY optimized ${Boost_${basename}_LIBRARY_RELEASE} debug ${Boost_${basename}_LIBRARY_DEBUG})
else()
# For single-config generators where CMAKE_BUILD_TYPE has no value,
# just use the release libraries
set(Boost_${basename}_LIBRARY ${Boost_${basename}_LIBRARY_RELEASE} )
endif()
# FIXME: This probably should be set for both cases
set(Boost_${basename}_LIBRARIES optimized ${Boost_${basename}_LIBRARY_RELEASE} debug ${Boost_${basename}_LIBRARY_DEBUG})
endif()
# if only the release version was found, set the debug variable also to the release version
if(Boost_${basename}_LIBRARY_RELEASE AND NOT Boost_${basename}_LIBRARY_DEBUG)
set(Boost_${basename}_LIBRARY_DEBUG ${Boost_${basename}_LIBRARY_RELEASE})
set(Boost_${basename}_LIBRARY ${Boost_${basename}_LIBRARY_RELEASE})
set(Boost_${basename}_LIBRARIES ${Boost_${basename}_LIBRARY_RELEASE})
endif()
# if only the debug version was found, set the release variable also to the debug version
if(Boost_${basename}_LIBRARY_DEBUG AND NOT Boost_${basename}_LIBRARY_RELEASE)
set(Boost_${basename}_LIBRARY_RELEASE ${Boost_${basename}_LIBRARY_DEBUG})
set(Boost_${basename}_LIBRARY ${Boost_${basename}_LIBRARY_DEBUG})
set(Boost_${basename}_LIBRARIES ${Boost_${basename}_LIBRARY_DEBUG})
endif()
# If the debug & release library ends up being the same, omit the keywords
if("${Boost_${basename}_LIBRARY_RELEASE}" STREQUAL "${Boost_${basename}_LIBRARY_DEBUG}")
set(Boost_${basename}_LIBRARY ${Boost_${basename}_LIBRARY_RELEASE} )
set(Boost_${basename}_LIBRARIES ${Boost_${basename}_LIBRARY_RELEASE} )
endif()
if(Boost_${basename}_LIBRARY AND Boost_${basename}_HEADER)
set(Boost_${basename}_FOUND ON)
if("x${basename}" STREQUAL "xTHREAD" AND NOT TARGET Threads::Threads)
string(APPEND Boost_ERROR_REASON_THREAD " (missing dependency: Threads)")
set(Boost_THREAD_FOUND OFF)
endif()
endif()
endif()
# Make variables changeable to the advanced user
mark_as_advanced(
Boost_${basename}_LIBRARY_RELEASE
Boost_${basename}_LIBRARY_DEBUG
)
endmacro()
# Detect changes in used variables.
# Compares the current variable value with the last one.
# In short form:
# v != v_LAST -> CHANGED = 1
# v is defined, v_LAST not -> CHANGED = 1
# v is not defined, but v_LAST is -> CHANGED = 1
# otherwise -> CHANGED = 0
# CHANGED is returned in variable named ${changed_var}
macro(_Boost_CHANGE_DETECT changed_var)
set(${changed_var} 0)
foreach(v ${ARGN})
if(DEFINED _Boost_COMPONENTS_SEARCHED)
if(${v})
if(_${v}_LAST)
string(COMPARE NOTEQUAL "${${v}}" "${_${v}_LAST}" _${v}_CHANGED)
else()
set(_${v}_CHANGED 1)
endif()
elseif(_${v}_LAST)
set(_${v}_CHANGED 1)
endif()
if(_${v}_CHANGED)
set(${changed_var} 1)
endif()
else()
set(_${v}_CHANGED 0)
endif()
endforeach()
endmacro()
#
# Find the given library (var).
# Use 'build_type' to support different lib paths for RELEASE or DEBUG builds
#
macro(_Boost_FIND_LIBRARY var build_type)
find_library(${var} ${ARGN})
if(${var})
# If this is the first library found then save Boost_LIBRARY_DIR_[RELEASE,DEBUG].
if(NOT Boost_LIBRARY_DIR_${build_type})
get_filename_component(_dir "${${var}}" PATH)
set(Boost_LIBRARY_DIR_${build_type} "${_dir}" CACHE PATH "Boost library directory ${build_type}" FORCE)
endif()
elseif(_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT)
# Try component-specific hints but do not save Boost_LIBRARY_DIR_[RELEASE,DEBUG].
find_library(${var} HINTS ${_Boost_FIND_LIBRARY_HINTS_FOR_COMPONENT} ${ARGN})
endif()
# If Boost_LIBRARY_DIR_[RELEASE,DEBUG] is known then search only there.
if(Boost_LIBRARY_DIR_${build_type})
set(_boost_LIBRARY_SEARCH_DIRS_${build_type} ${Boost_LIBRARY_DIR_${build_type}} NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
_Boost_DEBUG_PRINT_VAR("${CMAKE_CURRENT_LIST_FILE}" "${CMAKE_CURRENT_LIST_LINE}"
"Boost_LIBRARY_DIR_${build_type}")
_Boost_DEBUG_PRINT_VAR("${CMAKE_CURRENT_LIST_FILE}" "${CMAKE_CURRENT_LIST_LINE}"
"_boost_LIBRARY_SEARCH_DIRS_${build_type}")
endif()
endmacro()
#-------------------------------------------------------------------------------
# Convert CMAKE_CXX_COMPILER_VERSION to boost compiler suffix version.
function(_Boost_COMPILER_DUMPVERSION _OUTPUT_VERSION _OUTPUT_VERSION_MAJOR _OUTPUT_VERSION_MINOR)
string(REGEX REPLACE "([0-9]+)\\.([0-9]+)(\\.[0-9]+)?" "\\1"
_boost_COMPILER_VERSION_MAJOR "${CMAKE_CXX_COMPILER_VERSION}")
string(REGEX REPLACE "([0-9]+)\\.([0-9]+)(\\.[0-9]+)?" "\\2"
_boost_COMPILER_VERSION_MINOR "${CMAKE_CXX_COMPILER_VERSION}")
set(_boost_COMPILER_VERSION "${_boost_COMPILER_VERSION_MAJOR}${_boost_COMPILER_VERSION_MINOR}")
set(${_OUTPUT_VERSION} ${_boost_COMPILER_VERSION} PARENT_SCOPE)
set(${_OUTPUT_VERSION_MAJOR} ${_boost_COMPILER_VERSION_MAJOR} PARENT_SCOPE)
set(${_OUTPUT_VERSION_MINOR} ${_boost_COMPILER_VERSION_MINOR} PARENT_SCOPE)
endfunction()
#
# Take a list of libraries with "thread" in it
# and prepend duplicates with "thread_${Boost_THREADAPI}"
# at the front of the list
#
function(_Boost_PREPEND_LIST_WITH_THREADAPI _output)
set(_orig_libnames ${ARGN})
string(REPLACE "thread" "thread_${Boost_THREADAPI}" _threadapi_libnames "${_orig_libnames}")
set(${_output} ${_threadapi_libnames} ${_orig_libnames} PARENT_SCOPE)
endfunction()
#
# If a library is found, replace its cache entry with its REALPATH
#
function(_Boost_SWAP_WITH_REALPATH _library _docstring)
if(${_library})
get_filename_component(_boost_filepathreal ${${_library}} REALPATH)
unset(${_library} CACHE)
set(${_library} ${_boost_filepathreal} CACHE FILEPATH "${_docstring}")
endif()
endfunction()
function(_Boost_CHECK_SPELLING _var)
if(${_var})
string(TOUPPER ${_var} _var_UC)
message(FATAL_ERROR "ERROR: ${_var} is not the correct spelling. The proper spelling is ${_var_UC}.")
endif()
endfunction()
# Guesses Boost's compiler prefix used in built library names
# Returns the guess by setting the variable pointed to by _ret
function(_Boost_GUESS_COMPILER_PREFIX _ret)
if("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xIntel"
OR "x${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "xIntelLLVM")
if(WIN32)
set (_boost_COMPILER "-iw")
else()
set (_boost_COMPILER "-il")
endif()
elseif (GHSMULTI)
set(_boost_COMPILER "-ghs")
elseif("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xMSVC" OR "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
if(MSVC_TOOLSET_VERSION GREATER_EQUAL 150)
# Not yet known.
set(_boost_COMPILER "")
elseif(MSVC_TOOLSET_VERSION GREATER_EQUAL 140)
# MSVC toolset 14.x versions are forward compatible.
set(_boost_COMPILER "")
foreach(v 9 8 7 6 5 4 3 2 1 0)
if(MSVC_TOOLSET_VERSION GREATER_EQUAL 14${v})
list(APPEND _boost_COMPILER "-vc14${v}")
endif()
endforeach()
elseif(MSVC_TOOLSET_VERSION GREATER_EQUAL 80)
set(_boost_COMPILER "-vc${MSVC_TOOLSET_VERSION}")
elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13.10)
set(_boost_COMPILER "-vc71")
elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 13) # Good luck!
set(_boost_COMPILER "-vc7") # yes, this is correct
else() # VS 6.0 Good luck!
set(_boost_COMPILER "-vc6") # yes, this is correct
endif()
if("x${CMAKE_CXX_COMPILER_ID}" STREQUAL "xClang")
string(REPLACE "." ";" VERSION_LIST "${CMAKE_CXX_COMPILER_VERSION}")
list(GET VERSION_LIST 0 CLANG_VERSION_MAJOR)
set(_boost_COMPILER "-clangw${CLANG_VERSION_MAJOR};${_boost_COMPILER}")
endif()
elseif (BORLAND)
set(_boost_COMPILER "-bcb")
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
set(_boost_COMPILER "-sw")
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "XL")
set(_boost_COMPILER "-xlc")
elseif (MINGW)
if(Boost_VERSION_STRING VERSION_LESS 1.34)
set(_boost_COMPILER "-mgw") # no GCC version encoding prior to 1.34
else()
_Boost_COMPILER_DUMPVERSION(_boost_COMPILER_VERSION _boost_COMPILER_VERSION_MAJOR _boost_COMPILER_VERSION_MINOR)
if(Boost_VERSION_STRING VERSION_GREATER_EQUAL 1.73 AND _boost_COMPILER_VERSION_MAJOR VERSION_GREATER_EQUAL 5)
set(_boost_COMPILER "-mgw${_boost_COMPILER_VERSION_MAJOR}")
else()
set(_boost_COMPILER "-mgw${_boost_COMPILER_VERSION}")
endif()
endif()
elseif (UNIX)
_Boost_COMPILER_DUMPVERSION(_boost_COMPILER_VERSION _boost_COMPILER_VERSION_MAJOR _boost_COMPILER_VERSION_MINOR)
if(NOT Boost_VERSION_STRING VERSION_LESS 1.69.0)
# From GCC 5 and clang 4, versioning changes and minor becomes patch.
# For those compilers, patch is exclude from compiler tag in Boost 1.69+ library naming.
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND _boost_COMPILER_VERSION_MAJOR VERSION_GREATER 4)
set(_boost_COMPILER_VERSION "${_boost_COMPILER_VERSION_MAJOR}")
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND _boost_COMPILER_VERSION_MAJOR VERSION_GREATER 3)
set(_boost_COMPILER_VERSION "${_boost_COMPILER_VERSION_MAJOR}")
endif()
endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
if(Boost_VERSION_STRING VERSION_LESS 1.34)
set(_boost_COMPILER "-gcc") # no GCC version encoding prior to 1.34
else()
# Determine which version of GCC we have.
if(APPLE)
if(Boost_VERSION_STRING VERSION_LESS 1.36.0)
# In Boost <= 1.35.0, there is no mangled compiler name for
# the macOS/Darwin version of GCC.
set(_boost_COMPILER "")
else()
# In Boost 1.36.0 and newer, the mangled compiler name used
# on macOS/Darwin is "xgcc".
set(_boost_COMPILER "-xgcc${_boost_COMPILER_VERSION}")
endif()
else()
set(_boost_COMPILER "-gcc${_boost_COMPILER_VERSION}")
endif()
endif()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# TODO: Find out any Boost version constraints vs clang support.
set(_boost_COMPILER "-clang${_boost_COMPILER_VERSION}")
endif()
else()
set(_boost_COMPILER "")
endif()
_Boost_DEBUG_PRINT_VAR("${CMAKE_CURRENT_LIST_FILE}" "${CMAKE_CURRENT_LIST_LINE}"
"_boost_COMPILER" SOURCE "guessed")
set(${_ret} ${_boost_COMPILER} PARENT_SCOPE)
endfunction()
#
# Get component dependencies. Requires the dependencies to have been
# defined for the Boost release version.
#
# component - the component to check
# _ret - list of library dependencies
#
function(_Boost_COMPONENT_DEPENDENCIES component _ret)
# Note: to add a new Boost release, run
#
# % cmake -DBOOST_DIR=/path/to/boost/source -P Utilities/Scripts/BoostScanDeps.cmake
#
# The output may be added in a new block below. If it's the same as
# the previous release, simply update the version range of the block
# for the previous release. Also check if any new components have
# been added, and add any new components to
# _Boost_COMPONENT_HEADERS.
#
# This information was originally generated by running
# BoostScanDeps.cmake against every boost release to date supported
# by FindBoost:
#
# % for version in /path/to/boost/sources/*
# do
# cmake -DBOOST_DIR=$version -P Utilities/Scripts/BoostScanDeps.cmake
# done
#
# The output was then updated by search and replace with these regexes:
#
# - Strip message(STATUS) prefix dashes
# s;^-- ;;
# - Indent
# s;^set(; set(;;
# - Add conditionals
# s;Scanning /path/to/boost/sources/boost_\(.*\)_\(.*\)_\(.*); elseif(NOT Boost_VERSION_STRING VERSION_LESS \1\.\2\.\3 AND Boost_VERSION_STRING VERSION_LESS xxxx);
#
# This results in the logic seen below, but will require the xxxx
# replacing with the following Boost release version (or the next
# minor version to be released, e.g. 1.59 was the latest at the time
# of writing, making 1.60 the next. Identical consecutive releases
# were then merged together by updating the end range of the first
# block and removing the following redundant blocks.
#
# Running the script against all historical releases should be