73 lines
2.6 KiB
CMake
73 lines
2.6 KiB
CMake
# Try to find the MPFR library
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# See http://www.mpfr.org/
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#
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# This module supports requiring a minimum version, e.g. you can do
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# find_package(MPFR 2.3.0)
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# to require version 2.3.0 to newer of MPFR.
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#
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# Once done this will define
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#
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# MPFR_FOUND - system has MPFR lib with correct version
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# MPFR_INCLUDES - the MPFR include directory
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# MPFR_LIBRARIES - the MPFR library
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# MPFR_VERSION - MPFR version
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# Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org>
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# Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr>
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# Copyright (c) 2010 Jitse Niesen, <jitse@maths.leeds.ac.uk>
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# Copyright (c) 2015 Jack Poulson, <jack.poulson@gmail.com>
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# Redistribution and use is allowed according to the terms of the BSD license.
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find_path(MPFR_INCLUDES NAMES mpfr.h PATHS $ENV{GMPDIR} $ENV{MPFRDIR}
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${INCLUDE_INSTALL_DIR})
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# Set MPFR_FIND_VERSION to 1.0.0 if no minimum version is specified
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if(NOT MPFR_FIND_VERSION)
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if(NOT MPFR_FIND_VERSION_MAJOR)
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set(MPFR_FIND_VERSION_MAJOR 1)
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endif()
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if(NOT MPFR_FIND_VERSION_MINOR)
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set(MPFR_FIND_VERSION_MINOR 0)
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endif()
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if(NOT MPFR_FIND_VERSION_PATCH)
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set(MPFR_FIND_VERSION_PATCH 0)
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endif()
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set(MPFR_FIND_VERSION
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"${MPFR_FIND_VERSION_MAJOR}.${MPFR_FIND_VERSION_MINOR}.${MPFR_FIND_VERSION_PATCH}")
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endif()
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if(MPFR_INCLUDES)
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# Query MPFR_VERSION
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file(READ "${MPFR_INCLUDES}/mpfr.h" _mpfr_version_header)
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string(REGEX MATCH "define[ \t]+MPFR_VERSION_MAJOR[ \t]+([0-9]+)"
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_mpfr_major_version_match "${_mpfr_version_header}")
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set(MPFR_MAJOR_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+MPFR_VERSION_MINOR[ \t]+([0-9]+)"
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_mpfr_minor_version_match "${_mpfr_version_header}")
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set(MPFR_MINOR_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+MPFR_VERSION_PATCHLEVEL[ \t]+([0-9]+)"
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_mpfr_patchlevel_version_match "${_mpfr_version_header}")
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set(MPFR_PATCHLEVEL_VERSION "${CMAKE_MATCH_1}")
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set(MPFR_VERSION
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${MPFR_MAJOR_VERSION}.${MPFR_MINOR_VERSION}.${MPFR_PATCHLEVEL_VERSION})
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# Check whether found version exceeds minimum required
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if(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION})
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set(MPFR_VERSION_OK FALSE)
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message(STATUS "MPFR version ${MPFR_VERSION} found in ${MPFR_INCLUDES}, "
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"but at least version ${MPFR_FIND_VERSION} is required")
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else()
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set(MPFR_VERSION_OK TRUE)
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endif()
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endif()
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find_library(MPFR_LIBRARIES mpfr
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PATHS $ENV{GMPDIR} $ENV{MPFRDIR} ${LIB_INSTALL_DIR})
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(MPFR DEFAULT_MSG
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MPFR_INCLUDES MPFR_LIBRARIES MPFR_VERSION_OK)
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mark_as_advanced(MPFR_INCLUDES MPFR_LIBRARIES)
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