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6fb3e5f176
Ancient versions of CMake required else(), endif(), and similar block termination commands to have arguments matching the command starting the block. This is no longer the preferred style.
84 lines
2.6 KiB
CMake
84 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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# Redistribution and use is allowed according to the terms of the BSD license.
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# Set MPFR_INCLUDES
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find_path(MPFR_INCLUDES
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NAMES
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mpfr.h
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PATHS
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$ENV{GMPDIR}
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${INCLUDE_INSTALL_DIR}
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)
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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 "${MPFR_FIND_VERSION_MAJOR}.${MPFR_FIND_VERSION_MINOR}.${MPFR_FIND_VERSION_PATCH}")
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endif()
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if(MPFR_INCLUDES)
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# Set MPFR_VERSION
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file(READ "${MPFR_INCLUDES}/mpfr.h" _mpfr_version_header)
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string(REGEX MATCH "define[ \t]+MPFR_VERSION_MAJOR[ \t]+([0-9]+)" _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]+)" _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]+)" _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 ${MPFR_MAJOR_VERSION}.${MPFR_MINOR_VERSION}.${MPFR_PATCHLEVEL_VERSION})
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# Check whether found version exceeds minimum version
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if(${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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# Set MPFR_LIBRARIES
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find_library(MPFR_LIBRARIES mpfr PATHS $ENV{GMPDIR} ${LIB_INSTALL_DIR})
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# Epilogue
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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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