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option(ENABLE_SYSTEM_GMP "Use GMP from system" TRUE)
mark_as_advanced(GMP_LIBRARY GMP_INCLUDE_DIR)
set(USE_SYSTEM_GMP FALSE)
if(ENABLE_SYSTEM_GMP)
find_library(GMP_LIBRARY NAMES gmp)
find_path(GMP_INCLUDE_DIR NAMES gmp.h)
if(GMP_LIBRARY AND GMP_INCLUDE_DIR)
message (STATUS "Using GMP provided by system.")
set(USE_SYSTEM_GMP TRUE)
else()
message (STATUS "Detecting GMP from system failed.")
endif()
endif()
if(NOT USE_SYSTEM_GMP)
message(STATUS "Using bundled mini-gmp library.")
set(GMP_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/lib/gmp)
set(GMP_LIBRARY gmp)
add_subdirectory(lib/gmp)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GMP DEFAULT_MSG GMP_LIBRARY GMP_INCLUDE_DIR)