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96 lines
3.6 KiB
96 lines
3.6 KiB
if(TARGET gmp::gmp)
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return()
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endif()
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# Download precompiled .dll on Windows
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if(WIN32)
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include(gmp_mpfr)
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# Find_package will look for our downloaded lib on Windows, and system-wide on Linux/macOS
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find_package(GMP REQUIRED)
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else()
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message(STATUS "Third-party: creating target 'gmp::gmp'")
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# SERIOUSLY !?! CMAKE and configure use transposed definitions of "build" and
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# "host"?
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#
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# https://cmake.org/cmake/help/latest/variable/CMAKE_SYSTEM_NAME.html#variable:CMAKE_SYSTEM_NAME
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# https://gcc.gnu.org/onlinedocs/gccint/Configure-Terms.html
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#
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# Seems these aren't to be trusted much
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# https://gitlab.kitware.com/cmake/cmake/-/issues/20989
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if(APPLE)
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# https://gmplib.org/list-archives/gmp-discuss/2020-November/006607.html
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if(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" AND CMAKE_OSX_ARCHITECTURES STREQUAL "arm64")
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set(gmp_BUILD "x86_64-apple-darwin")
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set(gmp_HOST "arm64-apple-darwin")
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set(gmp_CFLAGS "--target=arm64-apple-darwin")
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set(gmp_LDFLAGS "-arch arm64")
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message(STATUS "GMP Recipe notices building on ${gmp_BUILD} for ${gmp_HOST}")
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elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64" AND CMAKE_OSX_ARCHITECTURES STREQUAL "x86_64")
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set(gmp_HOST "x86_64-apple-darwin")
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set(gmp_BUILD "arm64-apple-darwin")
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set(gmp_CFLAGS "--target=x86_64-apple-darwin13.0.0")
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set(gmp_LDFLAGS "")
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message(STATUS "GMP Recipe notices building on ${gmp_HOST} for ${gmp_BUILD}")
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endif()
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endif()
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include(FetchContent)
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include(ProcessorCount)
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ProcessorCount(Ncpu)
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include(ExternalProject)
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set(prefix ${FETCHCONTENT_BASE_DIR}/gmp)
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set(gmp_INSTALL ${prefix}/install)
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set(gmp_LIB_DIR ${gmp_INSTALL}/lib)
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set(gmp_LIBRARY
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${gmp_LIB_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gmp${CMAKE_STATIC_LIBRARY_SUFFIX}
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${gmp_LIB_DIR}/${CMAKE_STATIC_LIBRARY_PREFIX}gmpxx${CMAKE_STATIC_LIBRARY_SUFFIX}
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)
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set(gmp_INCLUDE_DIR ${gmp_INSTALL}/include)
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# Try to use CONFIGURE_HANDLED_BY_BUILD ON to avoid constantly reconfiguring
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if(${CMAKE_VERSION} VERSION_LESS 3.20)
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# CMake < 3.20, do not use any extra option
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set(gmp_ExternalProject_Add_extra_options)
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else()
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# CMake >= 3.20
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set(gmp_ExternalProject_Add_extra_options "CONFIGURE_HANDLED_BY_BUILD;ON")
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endif()
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ExternalProject_Add(gmp
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PREFIX ${prefix}
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URL https://github.com/alisw/GMP/archive/refs/tags/v6.2.1.tar.gz
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URL_MD5 f060ad4e762ae550d16f1bb477aadba5
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UPDATE_DISCONNECTED true # need this to avoid constant rebuild
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PATCH_COMMAND
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curl "https://gist.githubusercontent.com/alecjacobson/d34d9307c17d1b853571699b9786e9d1/raw/8d14fc21cb7654f51c2e8df4deb0f82f9d0e8355/gmp-patch" "|" git apply -v
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${gmp_ExternalProject_Add_extra_options}
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CONFIGURE_COMMAND
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${CMAKE_COMMAND} -E env
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CFLAGS=${gmp_CFLAGS}
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LDFLAGS=${gmp_LDFLAGS}
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${prefix}/src/gmp/configure
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--disable-debug --disable-dependency-tracking --enable-cxx --with-pic
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--prefix=${gmp_INSTALL}
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--build=${gmp_BUILD}
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--host=${gmp_HOST}
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--disable-shared
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BUILD_COMMAND make -j${Ncpu}
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INSTALL_COMMAND make -j${Ncpu} install
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INSTALL_DIR ${gmp_INSTALL}
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TEST_COMMAND ""
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BUILD_BYPRODUCTS ${gmp_LIBRARY}
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)
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ExternalProject_Get_Property(gmp SOURCE_DIR)
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set(gmp_LIBRARIES ${gmp_LIBRARY})
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add_library(gmp::gmp INTERFACE IMPORTED GLOBAL)
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file(MAKE_DIRECTORY ${gmp_INCLUDE_DIR}) # avoid race condition
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target_include_directories(gmp::gmp INTERFACE ${gmp_INCLUDE_DIR})
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target_link_libraries(gmp::gmp INTERFACE "${gmp_LIBRARIES}") # need the quotes to expand list
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add_dependencies(gmp::gmp gmp)
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endif()
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if(NOT TARGET gmp::gmp)
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message(FATAL_ERROR "Creation of target 'gmp::gmp' failed")
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endif()
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