build/cmake/BoostMacros.cmake

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set(BOOST_MINREV 1.56)

# we are not ready for the new style link targets introduced in
# boost 1.70.0 and cmake 3.14.2 which showed up on appveyor in
# mingw builds
set(Boost_NO_BOOST_CMAKE ON)

macro(REQUIRE_BOOST_HEADERS)
  find_package(Boost ${BOOST_MINREV} QUIET REQUIRED)
  if (NOT Boost_FOUND)
    string(CONCAT fatal_message
        "Boost ${BOOST_MINREV} or later is required to build sources in ${CMAKE_CURRENT_SOURCE_DIR}")
    message(FATAL_ERROR, ${fatal_message})
  endif()
  if (DEFINED Boost_INCLUDE_DIRS)
    # pre-boost 1.70.0 aware cmake, otherwise it is using targets
    include_directories(SYSTEM "${Boost_INCLUDE_DIRS}")
  endif()
endmacro()

macro(REQUIRE_BOOST_LIBRARIES libs)
  message(STATUS "Locating boost libraries required by sources in ${CMAKE_CURRENT_SOURCE_DIR}")
  find_package(Boost ${BOOST_MINREV} REQUIRED COMPONENTS ${${libs}})
  if (NOT Boost_FOUND)
    string(CONCAT fatal_message
        "Boost ${BOOST_MINREV} or later is required to build sources in ${CMAKE_CURRENT_SOURCE_DIR}, "
	    "or use -DBUILD_TESTING=OFF")
    message(FATAL_ERROR, ${fatal_message})
  endif()
endmacro()