if(NOT LIBPREPROCMATH_PREFIX STREQUAL CMAKE_BINARY_DIR)
  set(LIBPREPROCMATH_PREFIX "" CACHE PATH "The path to the previx of an libpreprocmath installation")

  find_path(
    LIBPREPROCMATH_INCLUDE_DIRS
    NAMES preprocmath/params.hpp
    PATHS ${LIBPREPROCMATH_PREFIX}/include)
  find_library(
    LIBPREPROCMATH_LIBRARY
    NAMES preprocmath
    PATHS ${LIBPREPROCMATH_PREFIX}/lib)

  if(LIBPREPROCMATH_INCLUDE_DIRS AND LIBPREPROCMATH_LIBRARY)
    get_filename_component(LIBPREPROCMATH_LIBRARY_DIR ${LIBPREPROCMATH_LIBRARY}
                           DIRECTORY CACHE)
    set(LIBPREPROCMATH_FOUND TRUE)
  endif()

  if(LIBPREPROCMATH_FOUND)
    if(NOT LIBPREPROCMATH_FIND_QUIETLY)
      message(STATUS "Found libpreprocmath")
    endif()
    set(HAVE_LIBPREPROCMATH 1)
  elseif(LIBPREPROCMATH_FOUND)
    if(LIBPREPROCMATH_FIND_REQUIRED)
      message(FATAL_ERROR "Could not find libpreprocmath")
    endif()
  endif()
endif()