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104 lines
3.2 KiB
CMake
104 lines
3.2 KiB
CMake
# Try to find the GMP library
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# https://gmplib.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(GMP 6.0.0)
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# to require version 6.0.0 to newer of GMP.
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#
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# Once done this will define
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#
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# GMP_FOUND - system has GMP lib with correct version
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# GMP_INCLUDES - the GMP include directory
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# GMP_LIBRARIES - the GMP library
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# GMP_VERSION - GMP version
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#
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# Copyright (c) 2016 Jack Poulson, <jack.poulson@gmail.com>
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# Redistribution and use is allowed according to the terms of the BSD license.
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include(BrewHelper)
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find_brew_prefix(_GMP_BREW_HINT gmp)
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find_path(GMP_INCLUDES
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NAMES
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gmp.h
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PATHS
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$ENV{GMPDIR} ${INCLUDE_INSTALL_DIR}
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PATH_SUFFIXES
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include
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HINTS
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${_GMP_BREW_HINT}
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)
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# Set GMP_FIND_VERSION to 5.1.0 if no minimum version is specified
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if(NOT GMP_FIND_VERSION)
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if(NOT GMP_FIND_VERSION_MAJOR)
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set(GMP_FIND_VERSION_MAJOR 5)
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endif()
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if(NOT GMP_FIND_VERSION_MINOR)
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set(GMP_FIND_VERSION_MINOR 1)
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endif()
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if(NOT GMP_FIND_VERSION_PATCH)
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set(GMP_FIND_VERSION_PATCH 0)
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endif()
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set(GMP_FIND_VERSION
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"${GMP_FIND_VERSION_MAJOR}.${GMP_FIND_VERSION_MINOR}.${GMP_FIND_VERSION_PATCH}")
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endif()
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message("GMP_INCLUDES=${GMP_INCLUDES}")
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if(GMP_INCLUDES)
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# Since the GMP version macros may be in a file included by gmp.h of the form
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# gmp-.*[_]?.*.h (e.g., gmp-x86_64.h), we search each of them.
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file(GLOB GMP_HEADERS "${GMP_INCLUDES}/gmp.h" "${GMP_INCLUDES}/gmp-*.h")
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foreach(gmp_header_filename ${GMP_HEADERS})
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file(READ "${gmp_header_filename}" _gmp_version_header)
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string(REGEX MATCH
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"define[ \t]+__GNU_MP_VERSION[ \t]+([0-9]+)" _gmp_major_version_match
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"${_gmp_version_header}")
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if(_gmp_major_version_match)
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set(GMP_MAJOR_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+__GNU_MP_VERSION_MINOR[ \t]+([0-9]+)"
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_gmp_minor_version_match "${_gmp_version_header}")
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set(GMP_MINOR_VERSION "${CMAKE_MATCH_1}")
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string(REGEX MATCH "define[ \t]+__GNU_MP_VERSION_PATCHLEVEL[ \t]+([0-9]+)"
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_gmp_patchlevel_version_match "${_gmp_version_header}")
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set(GMP_PATCHLEVEL_VERSION "${CMAKE_MATCH_1}")
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set(GMP_VERSION
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${GMP_MAJOR_VERSION}.${GMP_MINOR_VERSION}.${GMP_PATCHLEVEL_VERSION})
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endif()
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endforeach()
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# Check whether found version exists and exceeds the minimum requirement
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if(NOT GMP_VERSION)
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set(GMP_VERSION_OK FALSE)
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message(STATUS "GMP version was not detected")
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elseif(${GMP_VERSION} VERSION_LESS ${GMP_FIND_VERSION})
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set(GMP_VERSION_OK FALSE)
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message(STATUS "GMP version ${GMP_VERSION} found in ${GMP_INCLUDES}, "
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"but at least version ${GMP_FIND_VERSION} is required")
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else()
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set(GMP_VERSION_OK TRUE)
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endif()
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endif()
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if(STBIN)
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set(_gmp_lib_name libgmp.a)
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else()
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set(_gmp_lib_name libgmp.so)
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endif()
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find_library(GMP_LIBRARIES
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NAMES
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${_gmp_lib_name} gmp.lib libgmp-10 libgmp gmp
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HINTS
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${_GMP_BREW_HINT}
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INCLUDE_DIRS
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${GMP_INCLUDES}
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PATHS
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$ENV{GMPDIR} ${LIB_INSTALL_DIR}
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)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(gmp DEFAULT_MSG
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GMP_INCLUDES GMP_LIBRARIES GMP_VERSION_OK)
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mark_as_advanced(GMP_INCLUDES GMP_LIBRARIES)
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