boost_install/BoostConfig.cmake
2019-09-20 17:13:23 +03:00

202 lines
6.7 KiB
CMake

# 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.
#
# 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 ON, uses multithreaded Boost libraries.
# When OFF, uses single-threaded libraries.
# The default is to use either.
# 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 req)
set(_BOOST_QUIET)
if(Boost_FIND_QUIETLY)
set(_BOOST_QUIET QUIET)
endif()
set(_BOOST_REQUIRED)
if(${req} AND Boost_FIND_REQUIRED)
set(_BOOST_REQUIRED REQUIRED)
endif()
if("${comp}" MATCHES "^(python|numpy|mpi_python)([1-9])([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}")
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()
# Find boost_headers
boost_find_component(headers 1)
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${Boost_VERSION_PATCH})
get_target_property(Boost_INCLUDE_DIRS Boost::headers INTERFACE_INCLUDE_DIRECTORIES)
set(Boost_LIBRARIES "")
# Find components
foreach(__boost_comp IN LISTS Boost_FIND_COMPONENTS)
boost_find_component(${__boost_comp} ${Boost_FIND_REQUIRED_${__boost_comp}})
endforeach()
# 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)
# All Boost:: targets already disable autolink
add_library(Boost::diagnostic_definitions INTERFACE IMPORTED)
add_library(Boost::disable_autolinking INTERFACE IMPORTED)
add_library(Boost::dynamic_linking INTERFACE IMPORTED)
endif()