| 1 | # Try to find the MPFR library
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| 2 | # See http://www.mpfr.org/
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| 3 | #
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| 4 | # This module supports requiring a minimum version, e.g. you can do
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| 5 | # find_package(MPFR 2.3.0)
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| 6 | # to require version 2.3.0 to newer of MPFR.
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| 7 | #
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| 8 | # Once done this will define
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| 9 | #
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| 10 | # MPFR_FOUND - system has MPFR lib with correct version
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| 11 | # MPFR_INCLUDES - the MPFR include directory
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| 12 | # MPFR_LIBRARIES - the MPFR library
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| 13 | # MPFR_VERSION - MPFR version
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| 14 |
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| 15 | # Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org>
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| 16 | # Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr>
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| 17 | # Copyright (c) 2010 Jitse Niesen, <jitse@maths.leeds.ac.uk>
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| 18 | # Redistribution and use is allowed according to the terms of the BSD license.
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| 19 |
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| 20 | # Set MPFR_INCLUDES
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| 21 |
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| 22 | find_path(MPFR_INCLUDES
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| 23 | NAMES
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| 24 | mpfr.h
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| 25 | PATHS
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| 26 | $ENV{GMPDIR}
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| 27 | ${INCLUDE_INSTALL_DIR}
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| 28 | )
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| 29 |
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| 30 | # Set MPFR_FIND_VERSION to 1.0.0 if no minimum version is specified
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| 31 |
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| 32 | if(NOT MPFR_FIND_VERSION)
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| 33 | if(NOT MPFR_FIND_VERSION_MAJOR)
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| 34 | set(MPFR_FIND_VERSION_MAJOR 1)
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| 35 | endif(NOT MPFR_FIND_VERSION_MAJOR)
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| 36 | if(NOT MPFR_FIND_VERSION_MINOR)
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| 37 | set(MPFR_FIND_VERSION_MINOR 0)
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| 38 | endif(NOT MPFR_FIND_VERSION_MINOR)
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| 39 | if(NOT MPFR_FIND_VERSION_PATCH)
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| 40 | set(MPFR_FIND_VERSION_PATCH 0)
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| 41 | endif(NOT MPFR_FIND_VERSION_PATCH)
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| 42 |
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| 43 | set(MPFR_FIND_VERSION "${MPFR_FIND_VERSION_MAJOR}.${MPFR_FIND_VERSION_MINOR}.${MPFR_FIND_VERSION_PATCH}")
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| 44 | endif(NOT MPFR_FIND_VERSION)
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| 45 |
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| 46 |
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| 47 | if(MPFR_INCLUDES)
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| 48 |
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| 49 | # Set MPFR_VERSION
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| 50 |
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| 51 | file(READ "${MPFR_INCLUDES}/mpfr.h" _mpfr_version_header)
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| 52 |
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| 53 | string(REGEX MATCH "define[ \t]+MPFR_VERSION_MAJOR[ \t]+([0-9]+)" _mpfr_major_version_match "${_mpfr_version_header}")
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| 54 | set(MPFR_MAJOR_VERSION "${CMAKE_MATCH_1}")
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| 55 | string(REGEX MATCH "define[ \t]+MPFR_VERSION_MINOR[ \t]+([0-9]+)" _mpfr_minor_version_match "${_mpfr_version_header}")
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| 56 | set(MPFR_MINOR_VERSION "${CMAKE_MATCH_1}")
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| 57 | string(REGEX MATCH "define[ \t]+MPFR_VERSION_PATCHLEVEL[ \t]+([0-9]+)" _mpfr_patchlevel_version_match "${_mpfr_version_header}")
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| 58 | set(MPFR_PATCHLEVEL_VERSION "${CMAKE_MATCH_1}")
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| 59 |
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| 60 | set(MPFR_VERSION ${MPFR_MAJOR_VERSION}.${MPFR_MINOR_VERSION}.${MPFR_PATCHLEVEL_VERSION})
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| 61 |
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| 62 | # Check whether found version exceeds minimum version
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| 63 |
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| 64 | if(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION})
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| 65 | set(MPFR_VERSION_OK FALSE)
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| 66 | message(STATUS "MPFR version ${MPFR_VERSION} found in ${MPFR_INCLUDES}, "
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| 67 | "but at least version ${MPFR_FIND_VERSION} is required")
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| 68 | else(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION})
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| 69 | set(MPFR_VERSION_OK TRUE)
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| 70 | endif(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION})
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| 71 |
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| 72 | endif(MPFR_INCLUDES)
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| 73 |
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| 74 | # Set MPFR_LIBRARIES
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| 75 |
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| 76 | find_library(MPFR_LIBRARIES mpfr PATHS $ENV{GMPDIR} ${LIB_INSTALL_DIR})
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| 77 |
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| 78 | # Epilogue
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| 79 |
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| 80 | include(FindPackageHandleStandardArgs)
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| 81 | find_package_handle_standard_args(MPFR DEFAULT_MSG
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| 82 | MPFR_INCLUDES MPFR_LIBRARIES MPFR_VERSION_OK)
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| 83 | mark_as_advanced(MPFR_INCLUDES MPFR_LIBRARIES)
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