1*bf2c3715SXin Li# Try to find the MPFR library 2*bf2c3715SXin Li# See http://www.mpfr.org/ 3*bf2c3715SXin Li# 4*bf2c3715SXin Li# This module supports requiring a minimum version, e.g. you can do 5*bf2c3715SXin Li# find_package(MPFR 2.3.0) 6*bf2c3715SXin Li# to require version 2.3.0 to newer of MPFR. 7*bf2c3715SXin Li# 8*bf2c3715SXin Li# Once done this will define 9*bf2c3715SXin Li# 10*bf2c3715SXin Li# MPFR_FOUND - system has MPFR lib with correct version 11*bf2c3715SXin Li# MPFR_INCLUDES - the MPFR include directory 12*bf2c3715SXin Li# MPFR_LIBRARIES - the MPFR library 13*bf2c3715SXin Li# MPFR_VERSION - MPFR version 14*bf2c3715SXin Li 15*bf2c3715SXin Li# Copyright (c) 2006, 2007 Montel Laurent, <[email protected]> 16*bf2c3715SXin Li# Copyright (c) 2008, 2009 Gael Guennebaud, <[email protected]> 17*bf2c3715SXin Li# Copyright (c) 2010 Jitse Niesen, <[email protected]> 18*bf2c3715SXin Li# Redistribution and use is allowed according to the terms of the BSD license. 19*bf2c3715SXin Li 20*bf2c3715SXin Li# Set MPFR_INCLUDES 21*bf2c3715SXin Li 22*bf2c3715SXin Lifind_path(MPFR_INCLUDES 23*bf2c3715SXin Li NAMES 24*bf2c3715SXin Li mpfr.h 25*bf2c3715SXin Li PATHS 26*bf2c3715SXin Li $ENV{GMPDIR} 27*bf2c3715SXin Li ${INCLUDE_INSTALL_DIR} 28*bf2c3715SXin Li) 29*bf2c3715SXin Li 30*bf2c3715SXin Li# Set MPFR_FIND_VERSION to 1.0.0 if no minimum version is specified 31*bf2c3715SXin Li 32*bf2c3715SXin Liif(NOT MPFR_FIND_VERSION) 33*bf2c3715SXin Li if(NOT MPFR_FIND_VERSION_MAJOR) 34*bf2c3715SXin Li set(MPFR_FIND_VERSION_MAJOR 1) 35*bf2c3715SXin Li endif() 36*bf2c3715SXin Li if(NOT MPFR_FIND_VERSION_MINOR) 37*bf2c3715SXin Li set(MPFR_FIND_VERSION_MINOR 0) 38*bf2c3715SXin Li endif() 39*bf2c3715SXin Li if(NOT MPFR_FIND_VERSION_PATCH) 40*bf2c3715SXin Li set(MPFR_FIND_VERSION_PATCH 0) 41*bf2c3715SXin Li endif() 42*bf2c3715SXin Li 43*bf2c3715SXin Li set(MPFR_FIND_VERSION "${MPFR_FIND_VERSION_MAJOR}.${MPFR_FIND_VERSION_MINOR}.${MPFR_FIND_VERSION_PATCH}") 44*bf2c3715SXin Liendif() 45*bf2c3715SXin Li 46*bf2c3715SXin Li 47*bf2c3715SXin Liif(MPFR_INCLUDES) 48*bf2c3715SXin Li 49*bf2c3715SXin Li # Set MPFR_VERSION 50*bf2c3715SXin Li 51*bf2c3715SXin Li file(READ "${MPFR_INCLUDES}/mpfr.h" _mpfr_version_header) 52*bf2c3715SXin Li 53*bf2c3715SXin Li string(REGEX MATCH "define[ \t]+MPFR_VERSION_MAJOR[ \t]+([0-9]+)" _mpfr_major_version_match "${_mpfr_version_header}") 54*bf2c3715SXin Li set(MPFR_MAJOR_VERSION "${CMAKE_MATCH_1}") 55*bf2c3715SXin Li string(REGEX MATCH "define[ \t]+MPFR_VERSION_MINOR[ \t]+([0-9]+)" _mpfr_minor_version_match "${_mpfr_version_header}") 56*bf2c3715SXin Li set(MPFR_MINOR_VERSION "${CMAKE_MATCH_1}") 57*bf2c3715SXin Li string(REGEX MATCH "define[ \t]+MPFR_VERSION_PATCHLEVEL[ \t]+([0-9]+)" _mpfr_patchlevel_version_match "${_mpfr_version_header}") 58*bf2c3715SXin Li set(MPFR_PATCHLEVEL_VERSION "${CMAKE_MATCH_1}") 59*bf2c3715SXin Li 60*bf2c3715SXin Li set(MPFR_VERSION ${MPFR_MAJOR_VERSION}.${MPFR_MINOR_VERSION}.${MPFR_PATCHLEVEL_VERSION}) 61*bf2c3715SXin Li 62*bf2c3715SXin Li # Check whether found version exceeds minimum version 63*bf2c3715SXin Li 64*bf2c3715SXin Li if(${MPFR_VERSION} VERSION_LESS ${MPFR_FIND_VERSION}) 65*bf2c3715SXin Li set(MPFR_VERSION_OK FALSE) 66*bf2c3715SXin Li message(STATUS "MPFR version ${MPFR_VERSION} found in ${MPFR_INCLUDES}, " 67*bf2c3715SXin Li "but at least version ${MPFR_FIND_VERSION} is required") 68*bf2c3715SXin Li else() 69*bf2c3715SXin Li set(MPFR_VERSION_OK TRUE) 70*bf2c3715SXin Li endif() 71*bf2c3715SXin Li 72*bf2c3715SXin Liendif() 73*bf2c3715SXin Li 74*bf2c3715SXin Li# Set MPFR_LIBRARIES 75*bf2c3715SXin Li 76*bf2c3715SXin Lifind_library(MPFR_LIBRARIES mpfr PATHS $ENV{GMPDIR} ${LIB_INSTALL_DIR}) 77*bf2c3715SXin Li 78*bf2c3715SXin Li# Epilogue 79*bf2c3715SXin Li 80*bf2c3715SXin Liinclude(FindPackageHandleStandardArgs) 81*bf2c3715SXin Lifind_package_handle_standard_args(MPFR DEFAULT_MSG 82*bf2c3715SXin Li MPFR_INCLUDES MPFR_LIBRARIES MPFR_VERSION_OK) 83*bf2c3715SXin Limark_as_advanced(MPFR_INCLUDES MPFR_LIBRARIES) 84