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# Copyright 2019, 2020 Peter Dimov
# Distributed under the Boost Software License, Version 1.0.
# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
if(CMAKE_SOURCE_DIR STREQUAL Boost_SOURCE_DIR AND WIN32 AND CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
set(CMAKE_INSTALL_PREFIX "C:/Boost" CACHE PATH "Installation path prefix, prepended to installation directories" FORCE)
endif()
if(NOT BOOST_ENABLE_CMAKE)
message(FATAL_ERROR
"CMake support in Boost is experimental and part of an ongoing "
"development effort. It's not ready for use yet. Please use b2 "
"(Boost.Build) to build and install Boost.")
endif()
include(BoostMessage)
include(BoostInstall)
# --with-<library>
set(BOOST_INCLUDE_LIBRARIES "" CACHE STRING "List of libraries to build (default: all but excluded and incompatible)")
# --without-<library>
set(BOOST_EXCLUDE_LIBRARIES "" CACHE STRING "List of libraries to exclude from build")
set(BOOST_INCOMPATIBLE_LIBRARIES beast;callable_traits;compute;gil;hana;hof;safe_numerics;serialization;static_string;yap CACHE STRING "List of libraries with incompatible CMakeLists.txt files")
# --layout, --libdir, --cmakedir, --includedir in BoostInstall
# runtime-link=static|shared
set(BOOST_RUNTIME_LINK shared CACHE STRING "Runtime library selection for the MS ABI (shared or static)")
set_property(CACHE BOOST_RUNTIME_LINK PROPERTY STRINGS shared static)
if(NOT CMAKE_MSVC_RUNTIME_LIBRARY)
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
if(NOT BOOST_RUNTIME_LINK STREQUAL "static")
string(APPEND CMAKE_MSVC_RUNTIME_LIBRARY "DLL")
endif()
endif()
# Functions
function(__boost_auto_install __boost_lib)
if(NOT CMAKE_VERSION VERSION_LESS 3.13)
string(MAKE_C_IDENTIFIER "${__boost_lib}" __boost_lib_target)
if(TARGET "Boost::${__boost_lib_target}" AND TARGET "boost_${__boost_lib_target}")
get_target_property(__boost_lib_incdir "boost_${__boost_lib_target}" INTERFACE_INCLUDE_DIRECTORIES)
if(__boost_lib_incdir STREQUAL "${BOOST_SUPERPROJECT_SOURCE_DIR}/libs/${__boost_lib}/include")
boost_message(DEBUG "Enabling installation for '${__boost_lib}'")
boost_install(TARGETS "boost_${__boost_lib_target}" VERSION "${BOOST_SUPERPROJECT_VERSION}" HEADER_DIRECTORY "${BOOST_SUPERPROJECT_SOURCE_DIR}/libs/${__boost_lib}/include")
else()
boost_message(DEBUG "Not enabling installation for '${__boost_lib}'; interface include directory '${__boost_lib_incdir}' does not equal '${BOOST_SUPERPROJECT_SOURCE_DIR}/libs/${__boost_lib}/include'")
endif()
else()
boost_message(DEBUG "Not enabling installation for '${__boost_lib}'; targets 'Boost::${__boost_lib_target}' and 'boost_${__boost_lib_target}' weren't found")
endif()
endif()
endfunction()
function(__boost_scan_dependencies lib var)
file(STRINGS "${BOOST_SUPERPROJECT_SOURCE_DIR}/libs/${lib}/CMakeLists.txt" data)
set(result "")
foreach(line IN LISTS data)
if(line MATCHES "^[ ]*Boost::([A-Za-z0-9_]+)[ ]*$")
string(REGEX REPLACE "^numeric_" "numeric/" dep ${CMAKE_MATCH_1})
list(APPEND result ${dep})
endif()
endforeach()
set(${var} ${result} PARENT_SCOPE)
endfunction()
#
if(CMAKE_SOURCE_DIR STREQUAL Boost_SOURCE_DIR)
include(CTest)
add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C $<CONFIG>)
# link=static|shared
option(BUILD_SHARED_LIBS "Build shared libraries")
# --stagedir
set(BOOST_STAGEDIR "${CMAKE_CURRENT_BINARY_DIR}/stage" CACHE STRING "Build output directory")
if(NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${BOOST_STAGEDIR}/bin")
endif()
if(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${BOOST_STAGEDIR}/lib")
endif()
if(NOT CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${BOOST_STAGEDIR}/lib")
endif()
endif()
file(GLOB __boost_libraries RELATIVE "${BOOST_SUPERPROJECT_SOURCE_DIR}/libs" "${BOOST_SUPERPROJECT_SOURCE_DIR}/libs/*/CMakeLists.txt" "${BOOST_SUPERPROJECT_SOURCE_DIR}/libs/numeric/*/CMakeLists.txt")
# Check for mistakes in BOOST_INCLUDE_LIBRARIES
foreach(__boost_included_lib IN LISTS BOOST_INCLUDE_LIBRARIES)
if(NOT "${__boost_included_lib}/CMakeLists.txt" IN_LIST __boost_libraries)
message(WARNING "Library '${__boost_included_lib}' given in BOOST_INCLUDE_LIBRARIES has not been found.")
endif()
endforeach()
# Scan for dependencies
set(__boost_include_libraries ${BOOST_INCLUDE_LIBRARIES})
if(__boost_include_libraries)
list(REMOVE_DUPLICATES __boost_include_libraries)
endif()
set(__boost_libs_to_scan ${__boost_include_libraries})
while(__boost_libs_to_scan)
boost_message(DEBUG "Scanning dependencies: ${__boost_libs_to_scan}")
set(__boost_dependencies "")
foreach(__boost_lib IN LISTS __boost_libs_to_scan)
__boost_scan_dependencies(${__boost_lib} __boost_deps)
list(APPEND __boost_dependencies ${__boost_deps})
endforeach()
list(REMOVE_DUPLICATES __boost_dependencies)
set(__boost_libs_to_scan ${__boost_dependencies})
if(__boost_libs_to_scan)
list(REMOVE_ITEM __boost_libs_to_scan ${__boost_include_libraries})
endif()
list(APPEND __boost_include_libraries ${__boost_libs_to_scan})
endwhile()
# Installing targets created in other directories requires CMake 3.13
if(CMAKE_VERSION VERSION_LESS 3.13)
boost_message(VERBOSE "Boost installation support is limited on CMake ${CMAKE_VERSION} (need 3.13)")
endif()
foreach(__boost_lib_cml IN LISTS __boost_libraries)
get_filename_component(__boost_lib "${__boost_lib_cml}" DIRECTORY)
if(__boost_lib IN_LIST BOOST_INCOMPATIBLE_LIBRARIES)
boost_message(DEBUG "Skipping incompatible Boost library ${__boost_lib}")
elseif(__boost_lib IN_LIST BOOST_EXCLUDE_LIBRARIES)
boost_message(DEBUG "Skipping excluded Boost library ${__boost_lib}")
elseif(NOT BOOST_INCLUDE_LIBRARIES OR __boost_lib IN_LIST BOOST_INCLUDE_LIBRARIES)
boost_message(VERBOSE "Adding Boost library ${__boost_lib}")
add_subdirectory(libs/${__boost_lib})
__boost_auto_install(${__boost_lib})
elseif(__boost_lib IN_LIST __boost_include_libraries)
set(BUILD_TESTING OFF) # hide cache variable
boost_message(VERBOSE "Adding dependent Boost library ${__boost_lib}")
add_subdirectory(libs/${__boost_lib})
__boost_auto_install(${__boost_lib})
unset(BUILD_TESTING)
else()
set(BUILD_TESTING OFF) # hide cache variable
boost_message(DEBUG "Adding Boost library ${__boost_lib} with EXCLUDE_FROM_ALL")
add_subdirectory(libs/${__boost_lib} EXCLUDE_FROM_ALL)
unset(BUILD_TESTING)
endif()
endforeach()
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