c++ - Cmake cannot find boost library -

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i'm on mac os x, following cmake file, , boost v1.58.0 installed @ /usr/local/lib/boost_1_58_0, , every time run cmake prints "could not find boost". i've read through every stack overflow post can how working, , nothing has worked. there i'm missing?

cmake_minimum_required (version 3.1) project (helloworld)  set (cmake_cxx_flags "--std=gnu++11 ${cmake_c_flags}") file (glob source_files "source/*.cpp")  set (cmake_include_path ${cmake_include_path} /usr/local/lib/boost_1_58_0/boost) set (cmake_library_path ${cmake_library_path} /usr/local/lib/boost_1_58_0/stage/lib)  set (boost_no_boost_cmake on)    set (boost_no_system_paths on) set (boost_root /usr/local/lib/boost_1_58_0) set (boost_includedir /usr/local/lib/boost_1_58_0/boost) set (boost_librarydir /usr/local/lib/boost_1_58_0/stage/lib)  set (boost_use_static_libs off) set (boost_use_multithreaded on) set (boost_use_static_runtime off) find_package (boost 1.58.0 components optional)  if (boost_found)     include_directories (${boost_include_dirs})     target_link_libraries (helloworld ${boost_libraries}) endif ()  include_directories ("source") add_executable (helloworld ${source_files})

this breaking because optional isn't library, it's header-only, changing find_package (boost 1.58.0) fixed problem.


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