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# Copyright 2019 Peter Dimov
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
# This CMake configuration file, installed as part of the Boost build
# and installation procedure done by `b2 install`, provides support
# for find_package(Boost).
#
# It's roughly, but not perfectly, compatible with the behavior
# of find_package(Boost) as provided by FindBoost.cmake.
#
# A typical use might be
#
# find_package(Boost 1.70 REQUIRED COMPONENTS filesystem regex PATHS C:/Boost)
#
# On success, the above invocation would define the targets Boost::headers,
# Boost::filesystem and Boost::regex. Boost::headers represents all
# header-only libraries. An alias, Boost::boost, for Boost::headers is
# provided for compatibility.
#
# Requesting the special component "ALL" will make all installed components
# available, as in the following example:
#
# find_package(Boost 1.73 REQUIRED COMPONENTS ALL)
#
# Since COMPONENTS is optional when REQUIRED is specified, the above can be
# shortened to
#
# find_package(Boost 1.73 REQUIRED ALL)
#
# When ALL is used, a variable Boost_ALL_TARGETS will be set and will contain
# the names of all created targets.
#
# The ALL component cannot be combined with named components.
#
# Since Boost libraries can coexist in many variants - 32/64 bit,
# static/dynamic runtime, debug/release, the following variables can be used
# to control which variant is chosen:
#
# Boost_USE_DEBUG_LIBS: When OFF, disables debug libraries.
# Boost_USE_RELEASE_LIBS: When OFF, disables release libraries.
# Boost_USE_MULTITHREADED: When OFF, uses single-threaded libraries.
# The default is multithreaded.
# Boost_USE_STATIC_LIBS: When ON, uses static Boost libraries; when OFF,
# uses shared Boost libraries; when not set, uses
# static on Windows, shared otherwise.
# Boost_USE_STATIC_RUNTIME: When ON, uses Boost libraries linked against the
# static runtime. The default is shared runtime.
# Boost_USE_DEBUG_RUNTIME: When ON, uses Boost libraries linked against the
# debug runtime. When OFF, against the release
# runtime. The default is to use either.
# Boost_COMPILER: The compiler that has been used to build Boost,
# such as vc141, gcc7, clang37. The default is
# determined from CMAKE_CXX_COMPILER_ID.
# Boost_PYTHON_VERSION: The version of Python against which Boost.Python
# has been built; only required when more than one
# Boost.Python library is present.
#
# The following variables control the verbosity of the output:
#
# Boost_VERBOSE: Enable verbose output
# Boost_DEBUG: Enable debug (even more verbose) output
if(Boost_VERBOSE OR Boost_DEBUG)
message(STATUS "Found Boost ${Boost_VERSION} at ${Boost_DIR}")
# Output requested configuration (f.ex. "REQUIRED COMPONENTS filesystem")
if(Boost_FIND_QUIETLY)
set(_BOOST_CONFIG "${_BOOST_CONFIG} QUIET")
endif()
if(Boost_FIND_REQUIRED)
set(_BOOST_CONFIG "${_BOOST_CONFIG} REQUIRED")
endif()
foreach(__boost_comp IN LISTS Boost_FIND_COMPONENTS)
if(${Boost_FIND_REQUIRED_${__boost_comp}})
list(APPEND _BOOST_COMPONENTS ${__boost_comp})
else()
list(APPEND _BOOST_OPTIONAL_COMPONENTS ${__boost_comp})
endif()
endforeach()
if(_BOOST_COMPONENTS)
set(_BOOST_CONFIG "${_BOOST_CONFIG} COMPONENTS ${_BOOST_COMPONENTS}")
endif()
if(_BOOST_OPTIONAL_COMPONENTS)
set(_BOOST_CONFIG "${_BOOST_CONFIG} OPTIONAL_COMPONENTS ${_BOOST_OPTIONAL_COMPONENTS}")
endif()
if(_BOOST_CONFIG)
message(STATUS " Requested configuration:${_BOOST_CONFIG}")
endif()
unset(_BOOST_CONFIG)
unset(_BOOST_COMPONENTS)
unset(_BOOST_OPTIONAL_COMPONENTS)
endif()
macro(boost_find_component comp required quiet)
set(_BOOST_QUIET)
if(Boost_FIND_QUIETLY OR ${quiet})
set(_BOOST_QUIET QUIET)
endif()
set(_BOOST_REQUIRED)
if(${required} AND Boost_FIND_REQUIRED)
set(_BOOST_REQUIRED REQUIRED)
endif()
if("${comp}" MATCHES "^(python|numpy|mpi_python)([1-9])([0-9][0-9]?)$")
# handle pythonXY and numpyXY versioned components for compatibility
set(Boost_PYTHON_VERSION "${CMAKE_MATCH_2}.${CMAKE_MATCH_3}")
set(__boost_comp_nv "${CMAKE_MATCH_1}")
elseif("${comp}" MATCHES "^(python|numpy|mpi_python)([1-9])$")
# handle python2/python3 for compatibility
set(Boost_PYTHON_VERSION_MAJOR "${CMAKE_MATCH_2}")
set(__boost_comp_nv "${CMAKE_MATCH_1}")
else()
set(__boost_comp_nv "${comp}")
endif()
get_filename_component(_BOOST_CMAKEDIR "${CMAKE_CURRENT_LIST_DIR}/../" ABSOLUTE)
if(Boost_DEBUG)
message(STATUS "BoostConfig: find_package(boost_${__boost_comp_nv} ${Boost_VERSION} EXACT CONFIG ${_BOOST_REQUIRED} ${_BOOST_QUIET} HINTS ${_BOOST_CMAKEDIR})")
endif()
find_package(boost_${__boost_comp_nv} ${Boost_VERSION} EXACT CONFIG ${_BOOST_REQUIRED} ${_BOOST_QUIET} HINTS ${_BOOST_CMAKEDIR})
set(__boost_comp_found ${boost_${__boost_comp_nv}_FOUND})
# FindPackageHandleStandardArgs expects <package>_<component>_FOUND
set(Boost_${comp}_FOUND ${__boost_comp_found})
# FindBoost sets Boost_<COMPONENT>_FOUND
string(TOUPPER ${comp} _BOOST_COMP)
set(Boost_${_BOOST_COMP}_FOUND ${__boost_comp_found})
# FindBoost compatibility variables: Boost_LIBRARIES, Boost_<C>_LIBRARY
if(__boost_comp_found)
list(APPEND Boost_LIBRARIES Boost::${__boost_comp_nv})
set(Boost_${_BOOST_COMP}_LIBRARY Boost::${__boost_comp_nv})
if(NOT "${comp}" STREQUAL "${__boost_comp_nv}" AND NOT TARGET Boost::${comp})
# Versioned target alias (f.ex. Boost::python27) for compatibility
add_library(Boost::${comp} INTERFACE IMPORTED)
set_property(TARGET Boost::${comp} APPEND PROPERTY INTERFACE_LINK_LIBRARIES Boost::${__boost_comp_nv})
endif()
endif()
unset(_BOOST_REQUIRED)
unset(_BOOST_QUIET)
unset(_BOOST_CMAKEDIR)
unset(__boost_comp_nv)
unset(__boost_comp_found)
unset(_BOOST_COMP)
endmacro()
macro(boost_find_all_components)
# Search for all available component-configuration directories...
file(GLOB __boost_all_components
LIST_DIRECTORIES true RELATIVE "${CMAKE_CURRENT_LIST_DIR}/.."
"${CMAKE_CURRENT_LIST_DIR}/../boost_*-${Boost_VERSION}")
# ...and extract component names from it.
string(REGEX REPLACE "boost_([_a-z0-9]+)-${Boost_VERSION}" "\\1"
__boost_all_components "${__boost_all_components}")
if(Boost_DEBUG)
message(STATUS "BoostConfig: discovered components: ${__boost_all_components}")
endif()
list(REMOVE_ITEM __boost_all_components "headers")
# Try to find each component.
foreach(__boost_comp IN LISTS __boost_all_components)
boost_find_component(${__boost_comp} 0 1)
# Append to list of all targets (if found).
if(Boost_${__boost_comp}_FOUND)
list(APPEND Boost_ALL_TARGETS Boost::${__boost_comp})
endif()
endforeach()
unset(__boost_all_components)
if(Boost_DEBUG)
message(STATUS "BoostConfig: Boost_ALL_TARGETS: ${Boost_ALL_TARGETS}")
endif()
endmacro()
# Find boost_headers
boost_find_component(headers 1 0)
if(NOT boost_headers_FOUND)
set(Boost_FOUND 0)
set(Boost_NOT_FOUND_MESSAGE "A required dependency, boost_headers, has not been found.")
return()
endif()
# Compatibility variables
set(Boost_MAJOR_VERSION ${Boost_VERSION_MAJOR})
set(Boost_MINOR_VERSION ${Boost_VERSION_MINOR})
set(Boost_SUBMINOR_VERSION ${Boost_VERSION_PATCH})
set(Boost_VERSION_STRING ${Boost_VERSION})
set(Boost_VERSION_MACRO ${Boost_VERSION_MAJOR}0${Boost_VERSION_MINOR}0${Boost_VERSION_PATCH})
get_target_property(Boost_INCLUDE_DIRS Boost::headers INTERFACE_INCLUDE_DIRECTORIES)
set(Boost_LIBRARIES "")
# Save project's policies
cmake_policy(PUSH)
cmake_policy(SET CMP0057 NEW) # if IN_LIST
# Find components
if("ALL" IN_LIST Boost_FIND_COMPONENTS)
# Make sure "ALL" is the only requested component.
list(LENGTH Boost_FIND_COMPONENTS __boost_find_components_count)
if(NOT ${__boost_find_components_count} EQUAL 1)
message(AUTHOR_WARNING "ALL cannot be combined with named components; the named components will be ignored.")
endif()
unset(__boost_find_components_count)
set(Boost_ALL_TARGETS Boost::headers)
boost_find_all_components()
else()
foreach(__boost_comp IN LISTS Boost_FIND_COMPONENTS)
boost_find_component(${__boost_comp} ${Boost_FIND_REQUIRED_${__boost_comp}} 0)
endforeach()
endif()
# Compatibility targets
if(NOT TARGET Boost::boost)
add_library(Boost::boost INTERFACE IMPORTED)
set_property(TARGET Boost::boost APPEND PROPERTY INTERFACE_LINK_LIBRARIES Boost::headers)
add_library(Boost::diagnostic_definitions INTERFACE IMPORTED)
add_library(Boost::disable_autolinking INTERFACE IMPORTED)
add_library(Boost::dynamic_linking INTERFACE IMPORTED)
if(WIN32)
set_property(TARGET Boost::diagnostic_definitions PROPERTY INTERFACE_COMPILE_DEFINITIONS "BOOST_LIB_DIAGNOSTIC")
set_property(TARGET Boost::disable_autolinking PROPERTY INTERFACE_COMPILE_DEFINITIONS "BOOST_ALL_NO_LIB")
set_property(TARGET Boost::dynamic_linking PROPERTY INTERFACE_COMPILE_DEFINITIONS "BOOST_ALL_DYN_LINK")
endif()
endif()
# Compatibility variable when using meta-component "ALL"
if("ALL" IN_LIST Boost_FIND_COMPONENTS)
set(Boost_ALL_FOUND ${boost_headers_FOUND})
endif()
# Restore project's policies
cmake_policy(POP)
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