add_library(gmp UNKNOWN IMPORTED)
find_library(gmp_LIBRARY NAMES "gmp")
set_property(TARGET gmp PROPERTY IMPORTED_LOCATION "${gmp_LIBRARY}")

add_library(gmpxx UNKNOWN IMPORTED)
find_library(gmpxx_LIBRARY NAMES "gmpxx")
set_property(TARGET gmpxx PROPERTY IMPORTED_LOCATION "${gmpxx_LIBRARY}")

find_path(gmp_INCLUDE_DIR NAMES "gmp.h")
set_property(TARGET gmp PROPERTY INCLUDE_DIRECTORIES ${gmp_INCLUDE_DIR})

find_path(gmpxx_INCLUDE_DIR NAMES "gmpxx.h")
set_property(TARGET gmpxx PROPERTY INCLUDE_DIRECTORIES ${gmpxx_INCLUDE_DIR})