77 lines
2.8 KiB
CMake
77 lines
2.8 KiB
CMake
|
# Try to find the GMP library
|
||
|
|
# https://gmplib.org/
|
||
|
|
#
|
||
|
|
# This module supports requiring a minimum version, e.g. you can do
|
||
|
|
# find_package(GMP 6.0.0)
|
||
|
|
# to require version 6.0.0 to newer of GMP.
|
||
|
|
#
|
||
|
|
# Once done this will define
|
||
|
|
#
|
||
|
|
# GMP_FOUND - system has GMP lib with correct version
|
||
|
|
# GMP_INCLUDES - the GMP include directory
|
||
|
|
# GMP_LIBRARIES - the GMP library
|
||
|
|
# GMP_VERSION - GMP version
|
||
|
|
#
|
||
|
|
# Copyright (c) 2016 Jack Poulson, <jack.poulson@gmail.com>
|
||
|
|
# Redistribution and use is allowed according to the terms of the BSD license.
|
||
|
|
|
||
|
|
find_path(GMP_INCLUDES NAMES gmp.h PATHS $ENV{GMPDIR} ${INCLUDE_INSTALL_DIR})
|
||
|
|
|
||
|
|
# Set GMP_FIND_VERSION to 5.1.0 if no minimum version is specified
|
||
|
|
if(NOT GMP_FIND_VERSION)
|
||
|
|
if(NOT GMP_FIND_VERSION_MAJOR)
|
||
|
|
set(GMP_FIND_VERSION_MAJOR 5)
|
||
|
|
endif()
|
||
|
|
if(NOT GMP_FIND_VERSION_MINOR)
|
||
|
|
set(GMP_FIND_VERSION_MINOR 1)
|
||
|
|
endif()
|
||
|
|
if(NOT GMP_FIND_VERSION_PATCH)
|
||
|
|
set(GMP_FIND_VERSION_PATCH 0)
|
||
|
|
endif()
|
||
|
|
set(GMP_FIND_VERSION
|
||
|
|
"${GMP_FIND_VERSION_MAJOR}.${GMP_FIND_VERSION_MINOR}.${GMP_FIND_VERSION_PATCH}")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
message("GMP_INCLUDES=${GMP_INCLUDES}")
|
||
|
|
if(GMP_INCLUDES)
|
||
|
|
# Since the GMP version macros may be in a file included by gmp.h of the form
|
||
|
|
# gmp-.*[_]?.*.h (e.g., gmp-x86_64.h), we search each of them.
|
||
|
|
file(GLOB GMP_HEADERS "${GMP_INCLUDES}/gmp.h" "${GMP_INCLUDES}/gmp-*.h")
|
||
|
|
foreach(gmp_header_filename ${GMP_HEADERS})
|
||
|
|
file(READ "${gmp_header_filename}" _gmp_version_header)
|
||
|
|
string(REGEX MATCH
|
||
|
|
"define[ \t]+__GNU_MP_VERSION[ \t]+([0-9]+)" _gmp_major_version_match
|
||
|
|
"${_gmp_version_header}")
|
||
|
|
if(_gmp_major_version_match)
|
||
|
|
set(GMP_MAJOR_VERSION "${CMAKE_MATCH_1}")
|
||
|
|
string(REGEX MATCH "define[ \t]+__GNU_MP_VERSION_MINOR[ \t]+([0-9]+)"
|
||
|
|
_gmp_minor_version_match "${_gmp_version_header}")
|
||
|
|
set(GMP_MINOR_VERSION "${CMAKE_MATCH_1}")
|
||
|
|
string(REGEX MATCH "define[ \t]+__GNU_MP_VERSION_PATCHLEVEL[ \t]+([0-9]+)"
|
||
|
|
_gmp_patchlevel_version_match "${_gmp_version_header}")
|
||
|
|
set(GMP_PATCHLEVEL_VERSION "${CMAKE_MATCH_1}")
|
||
|
|
set(GMP_VERSION
|
||
|
|
${GMP_MAJOR_VERSION}.${GMP_MINOR_VERSION}.${GMP_PATCHLEVEL_VERSION})
|
||
|
|
endif()
|
||
|
|
endforeach()
|
||
|
|
|
||
|
|
# Check whether found version exists and exceeds the minimum requirement
|
||
|
|
if(NOT GMP_VERSION)
|
||
|
|
set(GMP_VERSION_OK FALSE)
|
||
|
|
message(STATUS "GMP version was not detected")
|
||
|
|
elseif(${GMP_VERSION} VERSION_LESS ${GMP_FIND_VERSION})
|
||
|
|
set(GMP_VERSION_OK FALSE)
|
||
|
|
message(STATUS "GMP version ${GMP_VERSION} found in ${GMP_INCLUDES}, "
|
||
|
|
"but at least version ${GMP_FIND_VERSION} is required")
|
||
|
|
else()
|
||
|
|
set(GMP_VERSION_OK TRUE)
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
find_library(GMP_LIBRARIES gmp PATHS $ENV{GMPDIR} ${LIB_INSTALL_DIR})
|
||
|
|
|
||
|
|
include(FindPackageHandleStandardArgs)
|
||
|
|
find_package_handle_standard_args(GMP DEFAULT_MSG
|
||
|
|
GMP_INCLUDES GMP_LIBRARIES GMP_VERSION_OK)
|
||
|
|
mark_as_advanced(GMP_INCLUDES GMP_LIBRARIES)
|