439 lines
17 KiB
CMake
439 lines
17 KiB
CMake
#
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# - Finds the Boost headers only
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# Use this module by invoking find_package with the form:
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# find_package(Boost
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# [version] [EXACT] # Minimum or EXACT version e.g. 1.36.0
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# [REQUIRED] # Fail with error if Boost is not found
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# )
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#
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# This module finds boost headers the search for the boost headers results
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# reported in variables:
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#
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# Boost_FOUND - True if headers and requested libraries were found
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# Boost_INCLUDE_DIRS - Boost include directories
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# Boost_VERSION - BOOST_VERSION value from boost/version.hpp
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# Boost_MAJOR_VERSION - Boost major version number (X in X.y.z)
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# Boost_MINOR_VERSION - Boost minor version number (Y in x.Y.z)
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# Boost_SUBMINOR_VERSION - Boost subminor version number (Z in x.y.Z)
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#
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# This module reads hints about search locations from variables:
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# BOOST_INCLUDEDIR - Preferred include directory e.g. <prefix>/include
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# Boost_NO_SYSTEM_PATHS - Set to ON to disable searching in locations not
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# specified by these hint variables. Default is OFF.
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# Boost_ADDITIONAL_VERSIONS
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# - List of Boost versions not known to this module
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# (Boost install locations may contain the version)
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# and saves search results persistently in CMake cache entries:
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# Boost_INCLUDE_DIR - Directory containing Boost headers
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#
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# Users may set these hints or results as cache entries. Projects should
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# not read these entries directly but instead use the above result variables.
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# Note that some hint names start in upper-case "BOOST". One may specify
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# these as environment variables if they are not specified as CMake variables
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# or cache entries.
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#
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# This module first searches for the Boost header files using the above hint
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# variables and saves the result in
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# Boost_INCLUDE_DIR.
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#
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#
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#=============================================================================
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# Copyright 2006-2012 Kitware, Inc.
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# Copyright 2006-2008 Andreas Schneider <mail@cynapses.org>
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# Copyright 2007 Wengo
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# Copyright 2007 Mike Jackson
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# Copyright 2008 Andreas Pakulat <apaku@gmx.de>
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# Copyright 2008-2012 Philip Lowman <philip@yhbt.com>
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#
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# CMake - Cross Platform Makefile Generator
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# Copyright 2000-2011 Kitware, Inc., Insight Software Consortium
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# All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# * Neither the names of Kitware, Inc., the Insight Software Consortium,
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# nor the names of their contributors may be used to endorse or promote
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# products derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# ------------------------------------------------------------------------------
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#
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# The above copyright and license notice applies to distributions of
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# CMake in source and binary form. Some source files contain additional
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# notices of original copyright by their contributors; see each source
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# for details. Third-party software packages supplied with CMake under
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# compatible licenses provide their own copyright notices documented in
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# corresponding subdirectories.
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#
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# ------------------------------------------------------------------------------
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#
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# CMake was initially developed by Kitware with the following sponsorship:
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#
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# * National Library of Medicine at the National Institutes of Health
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# as part of the Insight Segmentation and Registration Toolkit (ITK).
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#
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# * US National Labs (Los Alamos, Livermore, Sandia) ASC Parallel
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# Visualization Initiative.
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#
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# * National Alliance for Medical Image Computing (NAMIC) is funded by the
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# National Institutes of Health through the NIH Roadmap for Medical Research,
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# Grant U54 EB005149.
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#
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# * Kitware, Inc.
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#
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#
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#
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#-------------------------------------------------------------------------------
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# FindBoost functions & macros
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#
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macro(_Boost_CHANGE_DETECT changed_var)
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set(${changed_var} 0)
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foreach(v ${ARGN})
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if(DEFINED _Boost_COMPONENTS_SEARCHED)
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if(${v})
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if(_${v}_LAST)
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string(COMPARE NOTEQUAL "${${v}}" "${_${v}_LAST}" _${v}_CHANGED)
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else()
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set(_${v}_CHANGED 1)
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endif()
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elseif(_${v}_LAST)
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set(_${v}_CHANGED 1)
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endif()
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if(_${v}_CHANGED)
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set(${changed_var} 1)
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endif()
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else()
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set(_${v}_CHANGED 0)
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endif()
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endforeach()
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endmacro()
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#
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# Make sure the spelling of boost options is correct
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#
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function(_Boost_CHECK_SPELLING _var)
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if(${_var})
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string(TOUPPER ${_var} _var_UC)
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message(FATAL_ERROR "ERROR: ${_var} is not the correct spelling. The proper spelling is ${_var_UC}.")
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endif()
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endfunction()
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#
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# End functions/macros
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#
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#-------------------------------------------------------------------------------
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#-------------------------------------------------------------------------------
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# main.
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#-------------------------------------------------------------------------------
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# Check the version of Boost against the requested version.
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if(Boost_FIND_VERSION AND NOT Boost_FIND_VERSION_MINOR)
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message(SEND_ERROR "When requesting a specific version of Boost, you must provide at least the major and minor version numbers, e.g., 1.34")
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endif()
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if(Boost_FIND_VERSION_EXACT)
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# The version may appear in a directory with or without the patch
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# level, even when the patch level is non-zero.
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set(_boost_TEST_VERSIONS
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"${Boost_FIND_VERSION_MAJOR}.${Boost_FIND_VERSION_MINOR}.${Boost_FIND_VERSION_PATCH}"
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"${Boost_FIND_VERSION_MAJOR}.${Boost_FIND_VERSION_MINOR}")
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else()
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# The user has not requested an exact version. Among known
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# versions, find those that are acceptable to the user request.
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set(_Boost_KNOWN_VERSIONS ${Boost_ADDITIONAL_VERSIONS}
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"1.58.0" "1.58" "1.57.0" "1.57" "1.56.0" "1.56" "1.55.0" "1.55" "1.54.0" "1.54"
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"1.53.0" "1.53" "1.52.0" "1.52" "1.51.0" "1.51"
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"1.50.0" "1.50" "1.49.0" "1.49" "1.48.0" "1.48" "1.47.0" "1.47" "1.46.1"
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"1.46.0" "1.46" "1.45.0" "1.45" "1.44.0" "1.44" "1.43.0" "1.43" "1.42.0" "1.42"
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"1.41.0" "1.41" "1.40.0" "1.40" "1.39.0" "1.39" "1.38.0" "1.38" "1.37.0" "1.37"
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"1.36.1" "1.36.0" "1.36" "1.35.1" "1.35.0" "1.35" "1.34.1" "1.34.0"
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"1.34" "1.33.1" "1.33.0" "1.33")
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set(_boost_TEST_VERSIONS)
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if(Boost_FIND_VERSION)
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set(_Boost_FIND_VERSION_SHORT "${Boost_FIND_VERSION_MAJOR}.${Boost_FIND_VERSION_MINOR}")
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# Select acceptable versions.
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foreach(version ${_Boost_KNOWN_VERSIONS})
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if(NOT "${version}" VERSION_LESS "${Boost_FIND_VERSION}")
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# This version is high enough.
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list(APPEND _boost_TEST_VERSIONS "${version}")
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elseif("${version}.99" VERSION_EQUAL "${_Boost_FIND_VERSION_SHORT}.99")
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# This version is a short-form for the requested version with
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# the patch level dropped.
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list(APPEND _boost_TEST_VERSIONS "${version}")
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endif()
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endforeach()
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else()
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# Any version is acceptable.
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set(_boost_TEST_VERSIONS "${_Boost_KNOWN_VERSIONS}")
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endif()
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endif()
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# The reason that we failed to find Boost. This will be set to a
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# user-friendly message when we fail to find some necessary piece of
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# Boost.
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set(Boost_ERROR_REASON)
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if(Boost_DEBUG)
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# Output some of their choices
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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"_boost_TEST_VERSIONS = ${_boost_TEST_VERSIONS}")
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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"Boost_ADDITIONAL_VERSIONS = ${Boost_ADDITIONAL_VERSIONS}")
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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"Boost_NO_SYSTEM_PATHS = ${Boost_NO_SYSTEM_PATHS}")
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endif()
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_Boost_CHECK_SPELLING(Boost_INCLUDEDIR)
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# Collect environment variable inputs as hints. Do not consider changes.
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foreach(v BOOST_INCLUDEDIR)
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set(_env $ENV{${v}})
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if(_env)
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file(TO_CMAKE_PATH "${_env}" _ENV_${v})
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else()
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set(_ENV_${v} "")
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endif()
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endforeach()
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# Collect inputs and cached results. Detect changes since the last run.
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set(_Boost_VARS_DIR
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Boost_NO_SYSTEM_PATHS
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)
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if(Boost_DEBUG)
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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"Declared as CMake or Environmental Variables:")
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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" BOOST_INCLUDEDIR = ${BOOST_INCLUDEDIR}")
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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"_boost_TEST_VERSIONS = ${_boost_TEST_VERSIONS}")
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endif()
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# ------------------------------------------------------------------------
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# Search for Boost include DIR
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# ------------------------------------------------------------------------
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set(_Boost_VARS_INC BOOST_INCLUDEDIR Boost_INCLUDE_DIR Boost_ADDITIONAL_VERSIONS)
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_Boost_CHANGE_DETECT(_Boost_CHANGE_INCDIR ${_Boost_VARS_DIR} ${_Boost_VARS_INC})
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# Clear Boost_INCLUDE_DIR if it did not change but other input affecting the
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# location did. We will find a new one based on the new inputs.
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if(_Boost_CHANGE_INCDIR AND NOT _Boost_INCLUDE_DIR_CHANGED)
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unset(Boost_INCLUDE_DIR CACHE)
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endif()
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if(NOT Boost_INCLUDE_DIR)
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set(_boost_INCLUDE_SEARCH_DIRS "")
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if(BOOST_INCLUDEDIR)
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list(APPEND _boost_INCLUDE_SEARCH_DIRS ${BOOST_INCLUDEDIR})
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elseif(_ENV_BOOST_INCLUDEDIR)
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list(APPEND _boost_INCLUDE_SEARCH_DIRS ${_ENV_BOOST_INCLUDEDIR})
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endif()
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if( Boost_NO_SYSTEM_PATHS)
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list(APPEND _boost_INCLUDE_SEARCH_DIRS NO_CMAKE_SYSTEM_PATH)
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else()
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list(APPEND _boost_INCLUDE_SEARCH_DIRS PATHS
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C:/boost/include
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C:/boost
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/sw/local/include
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)
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endif()
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# Try to find Boost by stepping backwards through the Boost versions
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# we know about.
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# Build a list of path suffixes for each version.
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set(_boost_PATH_SUFFIXES)
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foreach(_boost_VER ${_boost_TEST_VERSIONS})
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# Add in a path suffix, based on the required version, ideally
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# we could read this from version.hpp, but for that to work we'd
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# need to know the include dir already
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set(_boost_BOOSTIFIED_VERSION)
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# Transform 1.35 => 1_35 and 1.36.0 => 1_36_0
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if(_boost_VER MATCHES "[0-9]+\\.[0-9]+\\.[0-9]+")
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string(REGEX REPLACE "([0-9]+)\\.([0-9]+)\\.([0-9]+)" "\\1_\\2_\\3"
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_boost_BOOSTIFIED_VERSION ${_boost_VER})
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elseif(_boost_VER MATCHES "[0-9]+\\.[0-9]+")
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string(REGEX REPLACE "([0-9]+)\\.([0-9]+)" "\\1_\\2"
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_boost_BOOSTIFIED_VERSION ${_boost_VER})
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endif()
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list(APPEND _boost_PATH_SUFFIXES
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"boost-${_boost_BOOSTIFIED_VERSION}"
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"boost_${_boost_BOOSTIFIED_VERSION}"
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"boost/boost-${_boost_BOOSTIFIED_VERSION}"
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"boost/boost_${_boost_BOOSTIFIED_VERSION}"
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)
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endforeach()
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if(Boost_DEBUG)
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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"Include debugging info:")
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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" _boost_INCLUDE_SEARCH_DIRS = ${_boost_INCLUDE_SEARCH_DIRS}")
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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" _boost_PATH_SUFFIXES = ${_boost_PATH_SUFFIXES}")
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endif()
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# Look for a standard boost header file.
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find_path(Boost_INCLUDE_DIR
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NAMES boost/config.hpp
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HINTS ${_boost_INCLUDE_SEARCH_DIRS}
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PATH_SUFFIXES ${_boost_PATH_SUFFIXES}
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)
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endif()
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# ------------------------------------------------------------------------
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# Extract version information from version.hpp
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# ------------------------------------------------------------------------
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# Set Boost_FOUND based only on header location and version.
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# It will be updated below for component libraries.
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if(Boost_INCLUDE_DIR)
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if(Boost_DEBUG)
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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"location of version.hpp: ${Boost_INCLUDE_DIR}/boost/version.hpp")
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endif()
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# Extract Boost_VERSION and Boost_LIB_VERSION from version.hpp
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set(Boost_VERSION 0)
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set(Boost_LIB_VERSION "")
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file(STRINGS "${Boost_INCLUDE_DIR}/boost/version.hpp" _boost_VERSION_HPP_CONTENTS REGEX "#define BOOST_(LIB_)?VERSION ")
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set(_Boost_VERSION_REGEX "([0-9]+)")
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set(_Boost_LIB_VERSION_REGEX "\"([0-9_]+)\"")
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foreach(v VERSION LIB_VERSION)
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if("${_boost_VERSION_HPP_CONTENTS}" MATCHES ".*#define BOOST_${v} ${_Boost_${v}_REGEX}.*")
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set(Boost_${v} "${CMAKE_MATCH_1}")
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endif()
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endforeach()
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unset(_boost_VERSION_HPP_CONTENTS)
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math(EXPR Boost_MAJOR_VERSION "${Boost_VERSION} / 100000")
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math(EXPR Boost_MINOR_VERSION "${Boost_VERSION} / 100 % 1000")
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math(EXPR Boost_SUBMINOR_VERSION "${Boost_VERSION} % 100")
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set(Boost_ERROR_REASON
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"${Boost_ERROR_REASON}Boost version: ${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}\nBoost include path: ${Boost_INCLUDE_DIR}")
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if(Boost_DEBUG)
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message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
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"version.hpp reveals boost "
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"${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
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endif()
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if(Boost_FIND_VERSION)
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# Set Boost_FOUND based on requested version.
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set(_Boost_VERSION "${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
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if("${_Boost_VERSION}" VERSION_LESS "${Boost_FIND_VERSION}")
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set(Boost_FOUND 0)
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set(_Boost_VERSION_AGE "old")
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elseif(Boost_FIND_VERSION_EXACT AND
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NOT "${_Boost_VERSION}" VERSION_EQUAL "${Boost_FIND_VERSION}")
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set(Boost_FOUND 0)
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set(_Boost_VERSION_AGE "new")
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else()
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set(Boost_FOUND 1)
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endif()
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if(NOT Boost_FOUND)
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# State that we found a version of Boost that is too new or too old.
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set(Boost_ERROR_REASON
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"${Boost_ERROR_REASON}\nDetected version of Boost is too ${_Boost_VERSION_AGE}. Requested version was ${Boost_FIND_VERSION_MAJOR}.${Boost_FIND_VERSION_MINOR}")
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if (Boost_FIND_VERSION_PATCH)
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set(Boost_ERROR_REASON
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"${Boost_ERROR_REASON}.${Boost_FIND_VERSION_PATCH}")
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endif ()
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if (NOT Boost_FIND_VERSION_EXACT)
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set(Boost_ERROR_REASON "${Boost_ERROR_REASON} (or newer)")
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endif ()
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set(Boost_ERROR_REASON "${Boost_ERROR_REASON}.")
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endif ()
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else()
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# Caller will accept any Boost version.
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set(Boost_FOUND 1)
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endif()
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else()
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set(Boost_FOUND 0)
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set(Boost_ERROR_REASON
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"${Boost_ERROR_REASON}Unable to find the Boost header files. Please set BOOST_INCLUDEDIR to the directory containing Boost's headers.")
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endif()
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set(Boost_INCLUDE_DIRS ${Boost_INCLUDE_DIR})
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set(Boost_LIBRARY_DIRS ${Boost_LIBRARY_DIR})
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# ------------------------------------------------------------------------
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# Notification to end user about what was found
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# ------------------------------------------------------------------------
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if(Boost_FOUND)
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if(NOT Boost_FIND_QUIETLY)
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message(STATUS "Boost version: ${Boost_MAJOR_VERSION}.${Boost_MINOR_VERSION}.${Boost_SUBMINOR_VERSION}")
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endif()
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else()
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if(Boost_FIND_REQUIRED)
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message(SEND_ERROR "Unable to find the requested Boost libraries.\n${Boost_ERROR_REASON}")
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else()
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if(NOT Boost_FIND_QUIETLY)
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# we opt not to automatically output Boost_ERROR_REASON here as
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# it could be quite lengthy and somewhat imposing in its requests
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# Since Boost is not always a required dependency we'll leave this
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# up to the end-user.
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if(Boost_DEBUG OR Boost_DETAILED_FAILURE_MSG)
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message(STATUS "Could NOT find Boost\n${Boost_ERROR_REASON}")
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else()
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message(STATUS "Could NOT find Boost")
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endif()
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endif()
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endif()
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endif()
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# Configure display of cache entries in GUI.
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foreach(v ${_Boost_VARS_INC} ${_Boost_VARS_LIB})
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get_property(_type CACHE ${v} PROPERTY TYPE)
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if(_type)
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set_property(CACHE ${v} PROPERTY ADVANCED 1)
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if("x${_type}" STREQUAL "xUNINITIALIZED")
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if("x${v}" STREQUAL "xBoost_ADDITIONAL_VERSIONS")
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set_property(CACHE ${v} PROPERTY TYPE STRING)
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else()
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set_property(CACHE ${v} PROPERTY TYPE PATH)
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endif()
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endif()
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endif()
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endforeach()
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# Record last used values of input variables so we can
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# detect on the next run if the user changed them.
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foreach(v
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|
${_Boost_VARS_INC} ${_Boost_VARS_LIB}
|
|
${_Boost_VARS_DIR} ${_Boost_VARS_NAME}
|
|
)
|
|
if(DEFINED ${v})
|
|
set(_${v}_LAST "${${v}}" CACHE INTERNAL "Last used ${v} value.")
|
|
else()
|
|
unset(_${v}_LAST CACHE)
|
|
endif()
|
|
endforeach()
|