| Brian Silverman | 72890c2 | 2015-09-19 14:37:37 -0400 | [diff] [blame^] | 1 | # Try to find the MPFR library |
| 2 | # See http://www.mpfr.org/ |
| 3 | # |
| 4 | # This module supports requiring a minimum version, e.g. you can do |
| 5 | # find_package(MPFR 2.3.0) |
| 6 | # to require version 2.3.0 to newer of MPFR. |
| 7 | # |
| 8 | # Once done this will define |
| 9 | # |
| 10 | # MPFR_FOUND - system has MPFR lib with correct version |
| 11 | # MPFR_INCLUDES - the MPFR include directory |
| 12 | # MPFR_LIBRARIES - the MPFR library |
| 13 | # MPFR_VERSION - MPFR version |
| 14 | |
| 15 | # Copyright (c) 2006, 2007 Montel Laurent, <montel@kde.org> |
| 16 | # Copyright (c) 2008, 2009 Gael Guennebaud, <g.gael@free.fr> |
| 17 | # Copyright (c) 2010 Jitse Niesen, <jitse@maths.leeds.ac.uk> |
| 18 | # Redistribution and use is allowed according to the terms of the BSD license. |
| 19 | |
| 20 | # Set MPFR_INCLUDES |
| 21 | |
| 22 | find_path(MPFR_INCLUDES |
| 23 | NAMES |
| 24 | mpfr.h |
| 25 | PATHS |
| 26 | $ENV{GMPDIR} |
| 27 | ${INCLUDE_INSTALL_DIR} |
| 28 | ) |
| 29 | |
| 30 | # Set MPFR_FIND_VERSION to 1.0.0 if no minimum version is specified |
| 31 | |
| 32 | if(NOT MPFR_FIND_VERSION) |
| 33 | if(NOT MPFR_FIND_VERSION_MAJOR) |
| 34 | set(MPFR_FIND_VERSION_MAJOR 1) |
| 35 | endif(NOT MPFR_FIND_VERSION_MAJOR) |
| 36 | if(NOT MPFR_FIND_VERSION_MINOR) |
| 37 | set(MPFR_FIND_VERSION_MINOR 0) |
| 38 | endif(NOT MPFR_FIND_VERSION_MINOR) |
| 39 | if(NOT MPFR_FIND_VERSION_PATCH) |
| 40 | set(MPFR_FIND_VERSION_PATCH 0) |
| 41 | endif(NOT MPFR_FIND_VERSION_PATCH) |
| 42 | |
| 43 | set(MPFR_FIND_VERSION "${MPFR_FIND_VERSION_MAJOR}.${MPFR_FIND_VERSION_MINOR}.${MPFR_FIND_VERSION_PATCH}") |
| 44 | endif(NOT MPFR_FIND_VERSION) |
| 45 | |
| 46 | |
| 47 | if(MPFR_INCLUDES) |
| 48 | |
| 49 | # Set MPFR_VERSION |
| 50 | |
| 51 | file(READ "${MPFR_INCLUDES}/mpfr.h" _mpfr_version_header) |
| 52 | |
| 53 | string(REGEX MATCH "define[ \t]+MPFR_VERSION_MAJOR[ \t]+([0-9]+)" _mpfr_major_version_match "${_mpfr_version_header}") |
| 54 | set(MPFR_MAJOR_VERSION "${CMAKE_MATCH_1}") |
| 55 | string(REGEX MATCH "define[ \t]+MPFR_VERSION_MINOR[ \t]+([0-9]+)" _mpfr_minor_version_match "${_mpfr_version_header}") |
| 56 | set(MPFR_MINOR_VERSION "${CMAKE_MATCH_1}") |
| 57 | string(REGEX MATCH "define[ \t]+MPFR_VERSION_PATCHLEVEL[ \t]+([0-9]+)" _mpfr_patchlevel_version_match "${_mpfr_version_header}") |
| 58 | set(MPFR_PATCHLEVEL_VERSION "${CMAKE_MATCH_1}") |
| 59 | |
| 60 | set(MPFR_VERSION ${MPFR_MAJOR_VERSION}.${MPFR_MINOR_VERSION}.${MPFR_PATCHLEVEL_VERSION}) |
| 61 | |
| 62 | # Check whether found version exceeds minimum version |
| 63 | |
| 64 | if(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION}) |
| 65 | set(MPFR_VERSION_OK FALSE) |
| 66 | message(STATUS "MPFR version ${MPFR_VERSION} found in ${MPFR_INCLUDES}, " |
| 67 | "but at least version ${MPFR_FIND_VERSION} is required") |
| 68 | else(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION}) |
| 69 | set(MPFR_VERSION_OK TRUE) |
| 70 | endif(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION}) |
| 71 | |
| 72 | endif(MPFR_INCLUDES) |
| 73 | |
| 74 | # Set MPFR_LIBRARIES |
| 75 | |
| 76 | find_library(MPFR_LIBRARIES mpfr PATHS $ENV{GMPDIR} ${LIB_INSTALL_DIR}) |
| 77 | |
| 78 | # Epilogue |
| 79 | |
| 80 | include(FindPackageHandleStandardArgs) |
| 81 | find_package_handle_standard_args(MPFR DEFAULT_MSG |
| 82 | MPFR_INCLUDES MPFR_LIBRARIES MPFR_VERSION_OK) |
| 83 | mark_as_advanced(MPFR_INCLUDES MPFR_LIBRARIES) |