# CMake build script for ZeroMQ

cmake_minimum_required (VERSION 2.8.12)
project (ZeroMQ)

list (INSERT CMAKE_MODULE_PATH 0 "${CMAKE_CURRENT_SOURCE_DIR}")
set (ZMQ_CMAKE_MODULES_DIR ${CMAKE_CURRENT_SOURCE_DIR}/builds/cmake/Modules)
list (APPEND CMAKE_MODULE_PATH ${ZMQ_CMAKE_MODULES_DIR})

# Apply CMP0042: MACOSX_RPATH is enabled by default
cmake_policy (SET CMP0042 NEW)

include(GNUInstallDirs)
if (${CMAKE_SYSTEM_NAME} STREQUAL Darwin)
  # Find more information: https://cmake.org/Wiki/CMake_RPATH_handling

  # Add an install rpath if it is not a system directory
  list (FIND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}" isSystemDir)
  if ("${isSystemDir}" STREQUAL "-1")
    set (CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
  endif ()

  # Add linker search paths pointing to external dependencies
  set (CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
endif ()

include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=gnu++11" COMPILER_SUPPORTS_CXX11)
if(COMPILER_SUPPORTS_CXX11)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
endif()
include(CheckCCompilerFlag)
CHECK_C_COMPILER_FLAG("-std=gnu11" COMPILER_SUPPORTS_C11)
if(COMPILER_SUPPORTS_C11)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu11")
endif()

if(NOT MSVC)
    # clang 6 has a warning that does not make sense on multi-platform code
    CHECK_CXX_COMPILER_FLAG("-Wno-tautological-constant-compare" CXX_HAS_TAUT_WARNING)
    if(CXX_HAS_TAUT_WARNING)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-tautological-constant-compare")
    endif()
    CHECK_C_COMPILER_FLAG("-Wno-tautological-constant-compare" CC_HAS_TAUT_WARNING)
    if(CC_HAS_TAUT_WARNING)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-tautological-constant-compare")
    endif()
endif()

# Will be used to add flags to pkg-config useful when apps want to statically link
set (pkg_config_libs_private "")

option (WITH_OPENPGM "Build with support for OpenPGM" OFF)
option (WITH_VMCI "Build with support for VMware VMCI socket" OFF)

if (APPLE)
    option (ZMQ_BUILD_FRAMEWORK "Build as OS X framework" OFF)
endif ()

# Select curve encryption library, defaults to tweetnacl
# To use libsodium instead, use --with-libsodium (must be installed)
# To disable curve, use --disable-curve

option (WITH_LIBSODIUM "Use libsodium instead of built-in tweetnacl" OFF)
option (ENABLE_CURVE "Enable CURVE security" ON)

if (NOT ENABLE_CURVE)
    message (STATUS "CURVE security is disabled")

elseif (WITH_LIBSODIUM)
    find_package (Sodium)
    if (SODIUM_FOUND)
        message (STATUS "Using libsodium for CURVE security")
        include_directories (${SODIUM_INCLUDE_DIRS})
        set (ZMQ_USE_LIBSODIUM 1)
        set (ZMQ_HAVE_CURVE 1)
        set (pkg_config_libs_private "${pkg_config_libs_private} -lsodium")
    else ()
        message (FATAL_ERROR
            "libsodium is not installed. Install it, then run CMake again")
    endif ()

else ()
    message (STATUS "Using tweetnacl for CURVE security")
    list (APPEND sources ${CMAKE_CURRENT_SOURCE_DIR}/src/tweetnacl.c)
    set (ZMQ_USE_TWEETNACL 1)
    set (ZMQ_HAVE_CURVE 1)
endif ()

set(SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")

if (EXISTS "${SOURCE_DIR}/.git")
    OPTION (ENABLE_DRAFTS "Build and install draft classes and methods" ON)
else ()
    OPTION (ENABLE_DRAFTS "Build and install draft classes and methods" OFF)
endif ()
IF (ENABLE_DRAFTS)
    ADD_DEFINITIONS (-DZMQ_BUILD_DRAFT_API)
    set (pkg_config_defines "-DZMQ_BUILD_DRAFT_API=1")
ELSE (ENABLE_DRAFTS)
    set (pkg_config_defines "")
ENDIF (ENABLE_DRAFTS)

option (WITH_MILITANT "Enable militant assertions" OFF)
if (WITH_MILITANT)
    add_definitions(-DZMQ_ACT_MILITANT)
endif()

set (API_POLLER "" CACHE STRING "Choose polling system for zmq_poll(er)_*. valid values are
                            poll or select [default=poll unless POLLER=select]")

set (POLLER "" CACHE STRING "Choose polling system for I/O threads. valid values are
                            kqueue, epoll, devpoll, pollset, poll or select [default=autodetect]")

include (CheckFunctionExists)
include (CheckTypeSize)

if (NOT MSVC)
    if (POLLER STREQUAL "")
        set (CMAKE_REQUIRED_INCLUDES sys/event.h)
        check_function_exists (kqueue HAVE_KQUEUE)
        set (CMAKE_REQUIRED_INCLUDES)
        if (HAVE_KQUEUE)
            set (POLLER "kqueue")
        endif()
    endif ()

    if (POLLER STREQUAL "")
        set (CMAKE_REQUIRED_INCLUDES sys/epoll.h)
        check_function_exists (epoll_create HAVE_EPOLL)
        set (CMAKE_REQUIRED_INCLUDES)
        if (HAVE_EPOLL)
            set (POLLER "epoll")
            check_function_exists (epoll_create1 HAVE_EPOLL_CLOEXEC)
            if (HAVE_EPOLL_CLOEXEC)
                set (ZMQ_IOTHREAD_POLLER_USE_EPOLL_CLOEXEC 1)
            endif ()
        endif ()
    endif ()

    if (POLLER STREQUAL "")
        set (CMAKE_REQUIRED_INCLUDES sys/devpoll.h)
        check_type_size ("struct pollfd" DEVPOLL)
        set (CMAKE_REQUIRED_INCLUDES)
        if (HAVE_DEVPOLL)
            set (POLLER "devpoll")
        endif ()
    endif ()

    if (POLLER STREQUAL "")
        set (CMAKE_REQUIRED_INCLUDES sys/pollset.h)
        check_function_exists (pollset_create HAVE_POLLSET)
        set (CMAKE_REQUIRED_INCLUDES)
        if (HAVE_POLLSET)
            set (POLLER "pollset")
        endif()
    endif ()

    if (POLLER STREQUAL "")
        set (CMAKE_REQUIRED_INCLUDES poll.h)
        check_function_exists (poll HAVE_POLL)
        set (CMAKE_REQUIRED_INCLUDES)
        if (HAVE_POLL)
            set (POLLER "poll")
        endif ()
    endif ()
endif()

if (POLLER STREQUAL "")
    if (WIN32)
        set (CMAKE_REQUIRED_INCLUDES winsock2.h)
        set (HAVE_SELECT 1)
    else ()
        set (CMAKE_REQUIRED_INCLUDES sys/select.h)
        check_function_exists (select HAVE_SELECT)
        set (CMAKE_REQUIRED_INCLUDES)
    endif ()
    if (HAVE_SELECT)
        set (POLLER "select")
    else ()
        message (FATAL_ERROR
            "Could not autodetect polling method")
    endif ()
endif ()

if (POLLER STREQUAL "kqueue"
 OR POLLER STREQUAL "epoll"
 OR POLLER STREQUAL "devpoll"
 OR POLLER STREQUAL "pollset"
 OR POLLER STREQUAL "poll"
 OR POLLER STREQUAL "select")
    message (STATUS "Using polling method in I/O threads: ${POLLER}")
    string (TOUPPER ${POLLER} UPPER_POLLER)
    set (ZMQ_IOTHREAD_POLLER_USE_${UPPER_POLLER} 1)
else ()
    message (FATAL_ERROR "Invalid polling method")
endif ()

if (POLLER STREQUAL "epoll" AND WIN32)
    message (STATUS "Including wepoll")
    list (APPEND sources ${CMAKE_CURRENT_SOURCE_DIR}/external/wepoll/wepoll.c ${CMAKE_CURRENT_SOURCE_DIR}/external/wepoll/wepoll.h)
endif()

if (API_POLLER STREQUAL "")
	if (POLLER STREQUAL "select")
		set (API_POLLER "select")
	else()
		set (API_POLLER "poll")
	endif()
endif()

message (STATUS "Using polling method in zmq_poll(er)_* API: ${API_POLLER}")
    string (TOUPPER ${API_POLLER} UPPER_API_POLLER)
set (ZMQ_POLL_BASED_ON_${UPPER_API_POLLER} 1)

include (TestZMQVersion)
if (NOT CMAKE_CROSSCOMPILING)
  include (ZMQSourceRunChecks)
endif ()
include (CheckIncludeFiles)
include (CheckLibraryExists)
include (CheckCCompilerFlag)
include (CheckCXXCompilerFlag)
include (CheckCSourceCompiles)
include (CheckCSourceRuns)
include (CMakeDependentOption)
include (CheckCXXSymbolExists)
include (CheckSymbolExists)

if (NOT CYGWIN)
    # TODO cannot we simply do 'if (WIN32) set(ZMQ_HAVE_WINDOWS ON)' or similar?
    check_include_files (windows.h ZMQ_HAVE_WINDOWS)
endif()

if(CMAKE_SYSTEM_NAME STREQUAL "WindowsStore" AND CMAKE_SYSTEM_VERSION STREQUAL "10.0")
  SET(ZMQ_HAVE_WINDOWS_UWP ON)
  ADD_DEFINITIONS(-D_WIN32_WINNT=_WIN32_WINNT_WIN10)
endif()
if (NOT MSVC)
    check_include_files (ifaddrs.h ZMQ_HAVE_IFADDRS)
    check_include_files (sys/uio.h ZMQ_HAVE_UIO)
    check_include_files (sys/eventfd.h ZMQ_HAVE_EVENTFD)
    if (ZMQ_HAVE_EVENTFD AND NOT CMAKE_CROSSCOMPILING)
      zmq_check_efd_cloexec ()
    endif ()
endif()

if (ZMQ_HAVE_WINDOWS)
  # Cannot use check_library_exists because the symbol is always declared as char(*)(void)
  set(CMAKE_REQUIRED_LIBRARIES "ws2_32.lib")
  check_symbol_exists (WSAStartup "winsock2.h" HAVE_WS2_32)

  set(CMAKE_REQUIRED_LIBRARIES "rpcrt4.lib")
  check_symbol_exists (UuidCreateSequential "rpc.h" HAVE_RPCRT4)

  set(CMAKE_REQUIRED_LIBRARIES "iphlpapi.lib")
  check_symbol_exists (GetAdaptersAddresses "winsock2.h;iphlpapi.h" HAVE_IPHLAPI)

  set(CMAKE_REQUIRED_LIBRARIES "")
  # TODO: This not the symbol we're looking for. What is the symbol?
  check_library_exists (ws2 fopen "" HAVE_WS2)
else()
  check_cxx_symbol_exists (SO_PEERCRED sys/socket.h ZMQ_HAVE_SO_PEERCRED)
  check_cxx_symbol_exists (LOCAL_PEERCRED sys/socket.h ZMQ_HAVE_LOCAL_PEERCRED)
endif()

find_library (RT_LIBRARY rt)

find_package (Threads)


if (WIN32 AND NOT CYGWIN)
  if (NOT HAVE_WS2_32 AND NOT HAVE_WS2)
    message (FATAL_ERROR "Cannot link to ws2_32 or ws2")
  endif ()

  if (NOT HAVE_RPCRT4)
    message (FATAL_ERROR "Cannot link to rpcrt4")
  endif ()

  if (NOT HAVE_IPHLAPI)
    message (FATAL_ERROR "Cannot link to iphlapi")
  endif ()
endif ()

if (NOT MSVC)
    set (CMAKE_REQUIRED_LIBRARIES rt)
    check_function_exists (clock_gettime HAVE_CLOCK_GETTIME)
    set (CMAKE_REQUIRED_LIBRARIES)

    set (CMAKE_REQUIRED_INCLUDES unistd.h)
    check_function_exists (fork HAVE_FORK)
    set (CMAKE_REQUIRED_INCLUDES)

    set (CMAKE_REQUIRED_INCLUDES sys/time.h)
    check_function_exists (gethrtime HAVE_GETHRTIME)
    set (CMAKE_REQUIRED_INCLUDES)

    set (CMAKE_REQUIRED_INCLUDES stdlib.h)
    check_function_exists (mkdtemp HAVE_MKDTEMP)
    set (CMAKE_REQUIRED_INCLUDES)

    set (CMAKE_REQUIRED_INCLUDES sys/socket.h)
    check_function_exists (accept4 HAVE_ACCEPT4)
    set (CMAKE_REQUIRED_INCLUDES)
endif()

add_definitions (-D_REENTRANT -D_THREAD_SAFE)
add_definitions (-DZMQ_CUSTOM_PLATFORM_HPP)

option (ENABLE_EVENTFD "Enable/disable eventfd" ZMQ_HAVE_EVENTFD)

macro (zmq_check_cxx_flag_prepend flag)
  check_cxx_compiler_flag ("${flag}" HAVE_FLAG_${flag})

  if (HAVE_FLAG_${flag})
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
  endif ()
endmacro ()

OPTION (ENABLE_ANALYSIS "Build with static analysis (make take very long)" OFF)

if (MSVC)
  if (ENABLE_ANALYSIS)  
    zmq_check_cxx_flag_prepend ("/W4")

    zmq_check_cxx_flag_prepend ("/analyze")
    
    # C++11/14/17-specific, but maybe possible via conditional defines
    zmq_check_cxx_flag_prepend ("/wd26440") # Function '...' can be declared 'noexcept' 
    zmq_check_cxx_flag_prepend ("/wd26432") # If you define or delete any default operation in the type '...', define or delete them all
    zmq_check_cxx_flag_prepend ("/wd26439") # This kind of function may not throw. Declare it 'noexcept' 
    zmq_check_cxx_flag_prepend ("/wd26447") # The function is declared 'noexcept' but calls function '...' which may throw exceptions
    zmq_check_cxx_flag_prepend ("/wd26433") # Function '...' should be marked with 'override'
    zmq_check_cxx_flag_prepend ("/wd26409") # Avoid calling new and delete explicitly, use std::make_unique<T> instead
    # Requires GSL
    zmq_check_cxx_flag_prepend ("/wd26429") # Symbol '...' is never tested for nullness, it can be marked as not_null
    zmq_check_cxx_flag_prepend ("/wd26446") # Prefer to use gsl::at()
    zmq_check_cxx_flag_prepend ("/wd26481") # Don't use pointer arithmetic. Use span instead
    zmq_check_cxx_flag_prepend ("/wd26472") # Don't use a static_cast for arithmetic conversions. Use brace initialization, gsl::narrow_cast or gsl::narow
    zmq_check_cxx_flag_prepend ("/wd26448") # Consider using gsl::finally if final action is intended
    zmq_check_cxx_flag_prepend ("/wd26400") # Do not assign the result of an allocation or a function call with an owner<T> return value to a raw pointer, use owner<T> instead    
    zmq_check_cxx_flag_prepend ("/wd26485") # Expression '...': No array to pointer decay (bounds.3)
  else()
    zmq_check_cxx_flag_prepend ("/W3")
  endif()

  if (MSVC_IDE)
    set (MSVC_TOOLSET "-${CMAKE_VS_PLATFORM_TOOLSET}")
  else ()
    set (MSVC_TOOLSET "")
  endif ()
else ()
  zmq_check_cxx_flag_prepend ("-Wall")
endif ()

if (CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
  zmq_check_cxx_flag_prepend ("-Wextra")
endif ()

option (LIBZMQ_PEDANTIC "" ON)
option (LIBZMQ_WERROR "" OFF)

#   TODO: why is -Wno-long-long defined differently than in configure.ac?
if (NOT MSVC)
    zmq_check_cxx_flag_prepend ("-Wno-long-long")
    zmq_check_cxx_flag_prepend ("-Wno-uninitialized")

    if (LIBZMQ_PEDANTIC)
      zmq_check_cxx_flag_prepend ("-pedantic")

      if (${CMAKE_CXX_COMPILER_ID} MATCHES "Intel")
        zmq_check_cxx_flag_prepend ("-strict-ansi")
      endif ()

      if (${CMAKE_CXX_COMPILER_ID} MATCHES "SunPro")
        zmq_check_cxx_flag_prepend ("-compat=5")
      endif ()
    endif ()
endif()

if (LIBZMQ_WERROR)
    if(MSVC)
        zmq_check_cxx_flag_prepend ("/WX")
    else()
        zmq_check_cxx_flag_prepend ("-Werror")
        if (NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
            zmq_check_cxx_flag_prepend ("-errwarn=%all")
        endif()
    endif()
endif ()

if (CMAKE_SYSTEM_PROCESSOR MATCHES "^sparc")
  zmq_check_cxx_flag_prepend ("-mcpu=v9")
endif ()

if (${CMAKE_CXX_COMPILER_ID} MATCHES "SunPro")
  zmq_check_cxx_flag_prepend ("-features=zla")
endif ()


if (CMAKE_SYSTEM_NAME MATCHES "SunOS" OR CMAKE_SYSTEM_NAME MATCHES "NetBSD")
  message (STATUS "Checking whether atomic operations can be used")
  check_c_source_compiles (
  "
   #include <atomic.h>

    int main ()
    {
      uint32_t value;
      atomic_cas_32 (&value, 0, 0);
      return 0;
    }
    "
    HAVE_ATOMIC_H)

  if (NOT HAVE_ATOMIC_H)
    set (ZMQ_FORCE_MUTEXES 1)
  endif ()
endif ()

zmq_check_noexcept ()

#-----------------------------------------------------------------------------
if (NOT CMAKE_CROSSCOMPILING AND NOT MSVC)
  zmq_check_sock_cloexec ()
  zmq_check_o_cloexec ()
  zmq_check_so_bindtodevice ()
  zmq_check_so_keepalive ()
  zmq_check_tcp_keepcnt ()
  zmq_check_tcp_keepidle ()
  zmq_check_tcp_keepintvl ()
  zmq_check_tcp_keepalive ()
  zmq_check_tcp_tipc ()
  zmq_check_pthread_setname ()
  zmq_check_pthread_setaffinity ()
  zmq_check_getrandom ()
endif ()

if (    CMAKE_SYSTEM_NAME MATCHES "Linux"
    OR CMAKE_SYSTEM_NAME MATCHES "GNU/kFreeBSD"
    OR CMAKE_SYSTEM_NAME MATCHES "GNU/Hurd"
    OR CYGWIN)
  add_definitions (-D_GNU_SOURCE)
elseif (CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
  add_definitions (-D__BSD_VISIBLE)
elseif (CMAKE_SYSTEM_NAME MATCHES "NetBSD")
  add_definitions (-D_NETBSD_SOURCE)
elseif (CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
  add_definitions (-D_OPENBSD_SOURCE)
elseif (CMAKE_SYSTEM_NAME MATCHES "SunOS")
  add_definitions (-D_PTHREADS)
elseif (CMAKE_SYSTEM_NAME MATCHES "HP-UX")
  add_definitions (-D_POSIX_C_SOURCE=200112L)
  zmq_check_cxx_flag_prepend (-Ae)
elseif (CMAKE_SYSTEM_NAME MATCHES "Darwin")
  add_definitions (-D_DARWIN_C_SOURCE)
endif ()

set (CMAKE_PYTHON_VERSION 2.7 2.6 2.5 2.4)
find_package (PythonInterp)
find_package (AsciiDoc)

cmake_dependent_option (WITH_DOC "Build Reference Guide documentation (requires DocBook)" ON
                       "PYTHONINTERP_FOUND;ASCIIDOC_FOUND" OFF)

if (MSVC)
  if (WITH_OPENPGM)
    #   set (OPENPGM_ROOT "" CACHE PATH "Location of OpenPGM")
    set (OPENPGM_VERSION_MAJOR 5)
    set (OPENPGM_VERSION_MINOR 2)
    set (OPENPGM_VERSION_MICRO 122)
    if (CMAKE_CL_64)
      find_path (OPENPGM_ROOT include/pgm/pgm.h
                PATHS
                "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Miru\\OpenPGM ${OPENPGM_VERSION_MAJOR}.${OPENPGM_VERSION_MINOR}.${OPENPGM_VERSION_MICRO}]"
                NO_DEFAULT_PATH
               )
      message (STATUS "OpenPGM x64 detected - ${OPENPGM_ROOT}")
    else ()
      find_path (OPENPGM_ROOT include/pgm/pgm.h
                PATHS
                "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Miru\\OpenPGM ${OPENPGM_VERSION_MAJOR}.${OPENPGM_VERSION_MINOR}.${OPENPGM_VERSION_MICRO}]"
                "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Miru\\OpenPGM ${OPENPGM_VERSION_MAJOR}.${OPENPGM_VERSION_MINOR}.${OPENPGM_VERSION_MICRO}]"
                NO_DEFAULT_PATH
               )
      message (STATUS "OpenPGM x86 detected - ${OPENPGM_ROOT}")
    endif (CMAKE_CL_64)
    set (OPENPGM_INCLUDE_DIRS ${OPENPGM_ROOT}/include)
    set (OPENPGM_LIBRARY_DIRS ${OPENPGM_ROOT}/lib)
    set (OPENPGM_LIBRARIES
      optimized libpgm${MSVC_TOOLSET}-mt-${OPENPGM_VERSION_MAJOR}_${OPENPGM_VERSION_MINOR}_${OPENPGM_VERSION_MICRO}.lib
      debug libpgm${MSVC_TOOLSET}-mt-gd-${OPENPGM_VERSION_MAJOR}_${OPENPGM_VERSION_MINOR}_${OPENPGM_VERSION_MICRO}.lib)
  endif ()
else ()
  if (WITH_OPENPGM)
    #  message (FATAL_ERROR "WITH_OPENPGM not implemented")

    if (NOT OPENPGM_PKGCONFIG_NAME)
      SET (OPENPGM_PKGCONFIG_NAME "openpgm-5.2")
    endif(NOT OPENPGM_PKGCONFIG_NAME)

    SET (OPENPGM_PKGCONFIG_NAME ${OPENPGM_PKGCONFIG_NAME} CACHE STRING
      "Name pkg-config shall use to find openpgm libraries and include paths"
      FORCE )

    find_package(PkgConfig)
    pkg_check_modules (OPENPGM  ${OPENPGM_PKGCONFIG_NAME})

    if (OPENPGM_FOUND)
        message (STATUS ${OPENPGM_PKGCONFIG_NAME}" found")
    else ()
        message (FATAL_ERROR
            ${OPENPGM_PKGCONFIG_NAME}"  not found. openpgm is searchd via `pkg-config ${OPENPGM_PKGCONFIG_NAME}`. Consider providing a valid OPENPGM_PKGCONFIG_NAME")
    endif ()

    # DSO symbol visibility for openpgm
    if (HAVE_FLAG_VISIBILITY_HIDDEN)

    elseif (HAVE_FLAG_LDSCOPE_HIDDEN)

    endif ()
  endif ()
endif ()


#-----------------------------------------------------------------------------
# force off-tree build

if (${CMAKE_CURRENT_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_BINARY_DIR})
message (FATAL_ERROR "CMake generation is not allowed within the source directory!
Remove the CMakeCache.txt file and try again from another folder, e.g.:

   rm CMakeCache.txt
   mkdir cmake-make
   cd cmake-make
   cmake ..
")
endif ()

#-----------------------------------------------------------------------------
# default to Release build

if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  # CMAKE_BUILD_TYPE is not used for multi-configuration generators like Visual Studio/XCode
  # which instead use CMAKE_CONFIGURATION_TYPES
  set (CMAKE_BUILD_TYPE Release CACHE STRING
      "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel."
      FORCE)
endif ()

set (EXECUTABLE_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/bin)
set (LIBRARY_OUTPUT_PATH  ${CMAKE_CURRENT_BINARY_DIR}/lib)

#-----------------------------------------------------------------------------
# platform specifics

if (WIN32)
    #   Socket limit is 16K (can be raised arbitrarily)
    add_definitions (-DFD_SETSIZE=16384)
    add_definitions (-D_CRT_SECURE_NO_WARNINGS)
    add_definitions (-D_WINSOCK_DEPRECATED_NO_WARNINGS)
endif ()

if (MSVC)
  # Parallel make.
  set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
  set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /MP")

  # Compile the static lib with debug information included
  string (REGEX REPLACE "/Z." "/Z7" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")

  # Optimization flags.
  # http://msdn.microsoft.com/en-us/magazine/cc301698.aspx
  if (NOT ${CMAKE_BUILD_TYPE} MATCHES "Debug")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /GL")
    set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /LTCG")
    set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /LTCG")
    set (CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} /LTCG")
  endif ()
endif ()


#-----------------------------------------------------------------------------
# source files

set (cxx-sources
        precompiled.cpp
        address.cpp
        client.cpp
        clock.cpp
        ctx.cpp
        curve_mechanism_base.cpp
        curve_client.cpp
        curve_server.cpp
        dealer.cpp
        devpoll.cpp
        dgram.cpp
        dist.cpp
        epoll.cpp
        err.cpp
        fq.cpp
        io_object.cpp
        io_thread.cpp
        ip.cpp
        ipc_address.cpp
        ipc_connecter.cpp
        ipc_listener.cpp
        kqueue.cpp
        lb.cpp
        mailbox.cpp
        mailbox_safe.cpp
        mechanism.cpp
        mechanism_base.cpp
        metadata.cpp
        msg.cpp
        mtrie.cpp
        object.cpp
        options.cpp
        own.cpp
        null_mechanism.cpp
        pair.cpp
        pgm_receiver.cpp
        pgm_sender.cpp
        pgm_socket.cpp
        pipe.cpp
        plain_client.cpp
        plain_server.cpp
        poll.cpp
        poller_base.cpp
        polling_util.cpp
        pollset.cpp
        proxy.cpp
        pub.cpp
        pull.cpp
        push.cpp
        random.cpp
        raw_encoder.cpp
        raw_decoder.cpp
        reaper.cpp
        rep.cpp
        req.cpp
        router.cpp
        select.cpp
        server.cpp
        session_base.cpp
        signaler.cpp
        socket_base.cpp
        socks.cpp
        socks_connecter.cpp
        stream.cpp
        stream_engine.cpp
        sub.cpp
        tcp.cpp
        tcp_address.cpp
        tcp_connecter.cpp
        tcp_listener.cpp
        thread.cpp
        trie.cpp
        v1_decoder.cpp
        v1_encoder.cpp
        v2_decoder.cpp
        v2_encoder.cpp
        xpub.cpp
        xsub.cpp
        zmq.cpp
        zmq_utils.cpp
        decoder_allocators.cpp
        socket_poller.cpp
        timers.cpp
        config.hpp
        radio.cpp
        dish.cpp
        udp_engine.cpp
        udp_address.cpp
        scatter.cpp
        gather.cpp
	ip_resolver.cpp
		zap_client.cpp
		# at least for VS, the header files must also be listed
		address.hpp
		array.hpp
		atomic_counter.hpp
		atomic_ptr.hpp
		blob.hpp
		client.hpp
		clock.hpp
		command.hpp
		condition_variable.hpp
		config.hpp
		ctx.hpp
		curve_client.hpp
		curve_client_tools.hpp
		curve_mechanism_base.hpp
		curve_server.hpp
		dbuffer.hpp
		dealer.hpp
		decoder.hpp
		decoder_allocators.hpp
		devpoll.hpp
		dgram.hpp
		dish.hpp
		dist.hpp
		encoder.hpp
		epoll.hpp
		err.hpp
		fd.hpp
		fq.hpp
		gather.hpp
		generic_mtrie.hpp
		generic_mtrie_impl.hpp
		gssapi_client.hpp
		gssapi_mechanism_base.hpp
		gssapi_server.hpp
		i_decoder.hpp
		i_encoder.hpp
		i_engine.hpp
		i_mailbox.hpp
		i_poll_events.hpp
		io_object.hpp
		io_thread.hpp
		ip.hpp
		ipc_address.hpp
		ipc_connecter.hpp
		ipc_listener.hpp
		kqueue.hpp
		lb.hpp
		likely.hpp
		macros.hpp
		mailbox.hpp
		mailbox_safe.hpp
		mechanism.hpp
		mechanism_base.hpp
		metadata.hpp
		msg.hpp
		mtrie.hpp
		mutex.hpp
		norm_engine.hpp
		null_mechanism.hpp
		object.hpp
		options.hpp
		own.hpp
		pair.hpp
		pgm_receiver.hpp
		pgm_sender.hpp
		pgm_socket.hpp
		pipe.hpp
		plain_client.hpp
		plain_common.hpp
		plain_server.hpp
		poll.hpp
		poller.hpp
		poller_base.hpp
		polling_util.hpp
		pollset.hpp
		precompiled.hpp
		proxy.hpp
		pub.hpp
		pull.hpp
		push.hpp
		radio.hpp
		random.hpp
		raw_decoder.hpp
		raw_encoder.hpp
		reaper.hpp
		rep.hpp
		req.hpp
		router.hpp
		scatter.hpp
		select.hpp
		server.hpp
		session_base.hpp
		signaler.hpp
		socket_base.hpp
		socket_poller.hpp
		socks.hpp
		socks_connecter.hpp
		stdint.hpp
		stream.hpp
		stream_engine.hpp
		sub.hpp
		tcp.hpp
		tcp_address.hpp
		tcp_connecter.hpp
		tcp_listener.hpp
		thread.hpp
		timers.hpp
		tipc_address.hpp
		tipc_connecter.hpp
		tipc_listener.hpp
		trie.hpp
		udp_address.hpp
		udp_engine.hpp
		v1_decoder.hpp
		v1_encoder.hpp
		v2_decoder.hpp
		v2_encoder.hpp
		v2_protocol.hpp
		vmci.hpp
		vmci_address.hpp
		vmci_connecter.hpp
		vmci_listener.hpp
		windows.hpp
		wire.hpp
		xpub.hpp
		xsub.hpp
		ypipe.hpp
		ypipe_base.hpp
		ypipe_conflate.hpp
		yqueue.hpp
		zap_client.hpp
		)

if (MINGW)
  # Generate the right type when using -m32 or -m64
  macro (set_rc_arch rc_target)
    set (CMAKE_RC_COMPILER_INIT windres)
    enable_language (RC)
    set (CMAKE_RC_COMPILE_OBJECT
        "<CMAKE_RC_COMPILER> <FLAGS> -O coff --target=${rc_target} <DEFINES> -i <SOURCE> -o <OBJECT>")
  endmacro ()

  if (NOT CMAKE_SYSTEM_PROCESSOR)
    set (CMAKE_SYSTEM_PROCESSOR ${CMAKE_HOST_SYSTEM_PROCESSOR})
  endif ()

  if (    CMAKE_SYSTEM_PROCESSOR MATCHES "i386"
      OR CMAKE_SYSTEM_PROCESSOR MATCHES "i486"
      OR CMAKE_SYSTEM_PROCESSOR MATCHES "i586"
      OR CMAKE_SYSTEM_PROCESSOR MATCHES "i686"
     # This also happens on x86_64 systems...what a worthless variable
      OR CMAKE_SYSTEM_PROCESSOR MATCHES "x86"
      OR CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64"
      OR CMAKE_SYSTEM_PROCESSOR MATCHES "amd64")

    if (CMAKE_SIZEOF_VOID_P EQUAL 8)
      set_rc_arch ("pe-x86-64")
    else ()
      set_rc_arch ("pe-i386")
    endif ()
  endif ()
endif ()

set (public_headers include/zmq.h
                    include/zmq_utils.h)

set (readme-docs AUTHORS
                COPYING
                COPYING.LESSER
                NEWS)

#-----------------------------------------------------------------------------
# optional modules

if (WITH_OPENPGM)
  add_definitions (-DZMQ_HAVE_OPENPGM)
  include_directories (${OPENPGM_INCLUDE_DIRS})
  link_directories (${OPENPGM_LIBRARY_DIRS})
  set (OPTIONAL_LIBRARIES ${OPENPGM_LIBRARIES})
endif (WITH_OPENPGM)

if (WITH_VMCI)
    add_definitions (-DZMQ_HAVE_VMCI)
    include_directories (${VMCI_INCLUDE_DIRS})
    list (APPEND cxx-sources vmci_address.cpp vmci_connecter.cpp vmci_listener.cpp vmci.cpp)
endif (WITH_VMCI)

if (ZMQ_HAVE_TIPC)
    add_definitions (-DZMQ_HAVE_TIPC)
    list (APPEND cxx-sources tipc_address.cpp tipc_connecter.cpp tipc_listener.cpp)
endif (ZMQ_HAVE_TIPC)

#-----------------------------------------------------------------------------
# source generators

foreach (source ${cxx-sources})
  list (APPEND sources ${CMAKE_CURRENT_SOURCE_DIR}/src/${source})
endforeach ()

configure_file (${CMAKE_CURRENT_SOURCE_DIR}/src/version.rc.in ${CMAKE_CURRENT_BINARY_DIR}/version.rc)

#   Delete any src/platform.hpp left by configure
file (REMOVE ${CMAKE_CURRENT_SOURCE_DIR}/src/platform.hpp)

configure_file (${CMAKE_CURRENT_SOURCE_DIR}/builds/cmake/platform.hpp.in ${CMAKE_CURRENT_BINARY_DIR}/platform.hpp)
list (APPEND sources ${CMAKE_CURRENT_BINARY_DIR}/platform.hpp)

configure_file (${CMAKE_CURRENT_SOURCE_DIR}/src/libzmq.pc.cmake.in ${CMAKE_CURRENT_BINARY_DIR}/libzmq.pc @ONLY)
set (zmq-pkgconfig ${CMAKE_CURRENT_BINARY_DIR}/libzmq.pc)

if (NOT ZMQ_BUILD_FRAMEWORK)
  install (FILES ${CMAKE_CURRENT_BINARY_DIR}/libzmq.pc DESTINATION lib/pkgconfig)
endif ()

if (MSVC)
  if (CMAKE_CL_64)
    set (nsis-template ${CMAKE_CURRENT_SOURCE_DIR}/builds/cmake/NSIS.template64.in)
  else ()
    set (nsis-template ${CMAKE_CURRENT_SOURCE_DIR}/builds/cmake/NSIS.template32.in)
  endif ()

  add_custom_command (
    OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/NSIS.template.in
    COMMAND ${CMAKE_COMMAND}
    ARGS -E
    copy
    ${nsis-template}
    ${CMAKE_CURRENT_BINARY_DIR}/NSIS.template.in
    DEPENDS ${nsis-template})
endif ()

file (MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/doc)
file (GLOB docs RELATIVE ${CMAKE_CURRENT_BINARY_DIR}/ "${CMAKE_CURRENT_SOURCE_DIR}/doc/*.txt")
set (html-docs)
foreach (txt ${docs})
  string (REGEX REPLACE ".*/(.*)\\.txt" "\\1.html" html ${txt})
  set (src ${txt})
  set (dst doc/${html})
  if (WITH_DOC)
    add_custom_command (
      OUTPUT  ${dst}
      COMMAND ${ASCIIDOC_EXECUTABLE}
      -d manpage
      -b xhtml11
      -f ${CMAKE_CURRENT_SOURCE_DIR}/doc/asciidoc.conf
      -azmq_version=${ZMQ_VERSION}
      -o ${dst}
      ${src}
      DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${src}
      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
      COMMENT "Generating ${html}")
    list (APPEND html-docs ${CMAKE_CURRENT_BINARY_DIR}/${dst})
  endif ()
endforeach ()

if (ZMQ_BUILD_FRAMEWORK)
  add_custom_command (
    TARGET libzmq
    POST_BUILD
    COMMAND ${CMAKE_COMMAND}
    ARGS -E make_directory "${CMAKE_LIBRARY_OUTPUT_PATH}/ZeroMQ.framework/Versions/${ZMQ_VERSION}/MacOS"
    COMMENT "Perf tools")
endif ()

if (MSVC)
    # default for all sources is to use precompiled headers
    foreach(source ${sources})    
        # C and C++ can not use the same precompiled header
        if (${soruce} MATCHES ".cpp$" AND NOT ${source} STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}/src/precompiled.cpp")
            set_source_files_properties(${source}
                PROPERTIES
                COMPILE_FLAGS "/Yuprecompiled.hpp"
                OBJECT_DEPENDS precompiled.hpp
                )
        endif()
    endforeach()
    # create precompiled header
    set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/src/precompiled.cpp
        PROPERTIES
        COMPILE_FLAGS "/Ycprecompiled.hpp"
        OBJECT_OUTPUTS precompiled.hpp
        )
endif ()


#-----------------------------------------------------------------------------
# output
option(BUILD_SHARED "Whether or not to build the shared object"  ON)
option(BUILD_STATIC "Whether or not to build the static archive" ON)

list(APPEND target_outputs "")

if (BUILD_SHARED)
  list(APPEND target_outputs "libzmq")
endif()

if (BUILD_STATIC)
  list(APPEND target_outputs "libzmq-static")
endif()

if (MSVC)
  # Suppress linker warnings caused by #ifdef omission
  # of file content.
  set( CMAKE_STATIC_LINKER_FLAGS /ignore:4221 )
  set (PDB_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin")
  set (PDB_NAME "libzmq${MSVC_TOOLSET}-mt-gd-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}")
  function(enable_vs_guideline_checker target)
    set_target_properties(${target} PROPERTIES
        VS_GLOBAL_EnableCppCoreCheck true
        VS_GLOBAL_CodeAnalysisRuleSet CppCoreCheckRules.ruleset
        VS_GLOBAL_RunCodeAnalysis true)
  endfunction()
  if (BUILD_SHARED)
    add_library (libzmq SHARED ${sources} ${public_headers} ${html-docs} ${readme-docs} ${CMAKE_CURRENT_BINARY_DIR}/NSIS.template.in ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
    if(ENABLE_ANALYSIS)
        enable_vs_guideline_checker (libzmq)
    endif()
    set_target_properties (libzmq PROPERTIES
      PUBLIC_HEADER "${public_headers}"
      RELEASE_POSTFIX "${MSVC_TOOLSET}-mt-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}"
      RELWITHDEBINFO_POSTFIX "${MSVC_TOOLSET}-mt-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}"
      MINSIZEREL_POSTFIX "${MSVC_TOOLSET}-mt-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}"
      DEBUG_POSTFIX "${MSVC_TOOLSET}-mt-gd-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}"
      RUNTIME_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin"
      COMPILE_DEFINITIONS "DLL_EXPORT"
      OUTPUT_NAME "libzmq")
  endif()

  if (BUILD_STATIC)
    add_library (libzmq-static STATIC ${sources} ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
    set_target_properties (libzmq-static PROPERTIES
      PUBLIC_HEADER "${public_headers}"
      RELEASE_POSTFIX "${MSVC_TOOLSET}-mt-s-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}"
      RELWITHDEBINFO_POSTFIX "${MSVC_TOOLSET}-mt-s-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}"
      MINSIZEREL_POSTFIX "${MSVC_TOOLSET}-mt-s-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}"
      DEBUG_POSTFIX "${MSVC_TOOLSET}-mt-sgd-${ZMQ_VERSION_MAJOR}_${ZMQ_VERSION_MINOR}_${ZMQ_VERSION_PATCH}"
      COMPILE_FLAGS "/DZMQ_STATIC"
      OUTPUT_NAME "libzmq")
  endif()
else ()
  # avoid building everything twice for shared + static
  # only on *nix, as Windows needs different preprocessor defines in static builds
  if (NOT MINGW)
    add_library (objects OBJECT ${sources})
    set_property(TARGET objects PROPERTY POSITION_INDEPENDENT_CODE ON)
    target_include_directories (objects
      PUBLIC
        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
        $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
        $<INSTALL_INTERFACE:include>
    )
  endif ()

  if (BUILD_SHARED)
    if (MINGW)
      add_library (libzmq SHARED ${sources} ${public_headers} ${html-docs} ${readme-docs} ${zmq-pkgconfig} ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
    else ()
      add_library (libzmq SHARED $<TARGET_OBJECTS:objects> ${public_headers} ${html-docs} ${readme-docs} ${zmq-pkgconfig} ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
    endif ()
    # NOTE: the SOVERSION and VERSION MUST be the same as the one generated by libtool! It is NOT the same as the version of the package.
    set_target_properties (libzmq PROPERTIES
                          COMPILE_DEFINITIONS "DLL_EXPORT"
                          PUBLIC_HEADER "${public_headers}"
                          VERSION "5.1.6"
                          SOVERSION "5"
                          OUTPUT_NAME "zmq"
                          PREFIX "lib")
    if (ZMQ_BUILD_FRAMEWORK)
      set_target_properties (libzmq PROPERTIES
                            FRAMEWORK TRUE
                            MACOSX_FRAMEWORK_IDENTIFIER "org.zeromq.libzmq"
                            MACOSX_FRAMEWORK_SHORT_VERSION_STRING ${ZMQ_VERSION}
                            MACOSX_FRAMEWORK_BUNDLE_VERSION ${ZMQ_VERSION})
      set_source_files_properties (${html-docs} PROPERTIES
                                  MACOSX_PACKAGE_LOCATION doc)
      set_source_files_properties (${readme-docs} PROPERTIES
                                  MACOSX_PACKAGE_LOCATION etc)
      set_source_files_properties (${zmq-pkgconfig} PROPERTIES
                                  MACOSX_PACKAGE_LOCATION lib/pkgconfig)
    endif ()
  endif()

  if (BUILD_STATIC)
    if (MINGW)
      add_library (libzmq-static STATIC ${sources} ${public_headers} ${html-docs} ${readme-docs} ${zmq-pkgconfig} ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
    else ()
      add_library (libzmq-static STATIC $<TARGET_OBJECTS:objects> ${public_headers} ${html-docs} ${readme-docs} ${zmq-pkgconfig} ${CMAKE_CURRENT_BINARY_DIR}/version.rc)
    endif ()
    set_target_properties (libzmq-static PROPERTIES
      PUBLIC_HEADER "${public_headers}"
      OUTPUT_NAME "zmq"
      PREFIX "lib")
  endif()

endif ()

if (BUILD_STATIC)
  target_compile_definitions(libzmq-static
    PUBLIC ZMQ_STATIC
  )
endif ()

foreach (target ${target_outputs})
  target_include_directories (${target}
    PUBLIC
      $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>
      $<INSTALL_INTERFACE:include>
  )
endforeach()

if (BUILD_SHARED)
  target_link_libraries (libzmq ${OPTIONAL_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})

  if (SODIUM_FOUND)
    target_link_libraries (libzmq ${SODIUM_LIBRARIES})
	# On Solaris, libsodium depends on libssp
    if (${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
      target_link_libraries (libzmq ssp)
    endif ()
  endif ()

  if (HAVE_WS2_32)
    target_link_libraries (libzmq ws2_32)
  elseif (HAVE_WS2)
    target_link_libraries (libzmq ws2)
  endif ()

  if (HAVE_RPCRT4)
    target_link_libraries (libzmq rpcrt4)
  endif ()

  if (HAVE_IPHLAPI)
    target_link_libraries (libzmq iphlpapi)
  endif ()

  if (RT_LIBRARY)
    target_link_libraries (libzmq -lrt)
  endif ()
endif ()

if (BUILD_STATIC)
  target_link_libraries (libzmq-static ${OPTIONAL_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})

  if (SODIUM_FOUND)
    target_link_libraries (libzmq-static ${SODIUM_LIBRARIES})
    # On Solaris, libsodium depends on libssp
    if (${CMAKE_SYSTEM_NAME} MATCHES "SunOS")
      target_link_libraries (libzmq-static ssp)
    endif ()
  endif ()

  if (HAVE_WS2_32)
    target_link_libraries (libzmq-static ws2_32)
  elseif (HAVE_WS2)
    target_link_libraries (libzmq-static ws2)
  endif ()

  if (HAVE_RPCRT4)
    target_link_libraries (libzmq-static rpcrt4)
  endif ()

  if (HAVE_IPHLAPI)
    target_link_libraries (libzmq-static iphlpapi)
  endif ()

  if (RT_LIBRARY)
    target_link_libraries (libzmq-static -lrt)
  endif ()
endif ()

if (BUILD_SHARED)
  set (perf-tools local_lat
                 remote_lat
                 local_thr
                 remote_thr
                 inproc_lat
                 inproc_thr)

  if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug") # Why?
    option (WITH_PERF_TOOL "Build with perf-tools" ON)
  else ()
    option (WITH_PERF_TOOL "Build with perf-tools" OFF)
  endif ()

  if (WITH_PERF_TOOL)
    foreach (perf-tool ${perf-tools})
      add_executable (${perf-tool} perf/${perf-tool}.cpp)
      target_link_libraries (${perf-tool} libzmq)

      if (ZMQ_BUILD_FRAMEWORK)
        # Copy perf-tools binaries into Framework
        add_custom_command (
          TARGET libzmq ${perf-tool}
          POST_BUILD
          COMMAND ${CMAKE_COMMAND}
          ARGS -E copy "$<TARGET_FILE:${perf-tool}>" "${LIBRARY_OUTPUT_PATH}/ZeroMQ.framework/Versions/${ZMQ_VERSION_STRING}/MacOS/${perf-tool}"
          VERBATIM
          COMMENT "Perf tools")
      else ()
        install (TARGETS ${perf-tool}
                RUNTIME DESTINATION bin
                COMPONENT PerfTools)
      endif ()
    endforeach ()
  endif ()
elseif (WITH_PERF_TOOL)
  message(FATAL_ERROR "Shared library disabled - perf-tools unavailable.")
endif ()

#-----------------------------------------------------------------------------
# tests

option(BUILD_TESTS "Whether or not to build the tests" ON)

set (ZMQ_BUILD_TESTS ${BUILD_TESTS} CACHE BOOL "Build the tests for ZeroMQ")

if (ZMQ_BUILD_TESTS)
  enable_testing () # Enable testing only works in root scope
  ADD_SUBDIRECTORY (tests)
  if (BUILD_STATIC)
    add_subdirectory (unittests)
  else ()
    message (WARNING "Not building unit tests, since BUILD_STATIC is not enabled")
  endif ()
endif ()

#-----------------------------------------------------------------------------
# installer

if (MSVC)
  install (TARGETS ${target_outputs}
          EXPORT ${PROJECT_NAME}-targets
          ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
          LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
          PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
          COMPONENT SDK)
  if (MSVC_IDE)
    install (FILES ${PDB_OUTPUT_DIRECTORY}/\${CMAKE_INSTALL_CONFIG_NAME}/${PDB_NAME}.pdb DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT SDK OPTIONAL)
  else()
    install (FILES ${PDB_OUTPUT_DIRECTORY}/${PDB_NAME}.pdb DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT SDK OPTIONAL)
  endif()
  if (BUILD_SHARED)
    install (TARGETS libzmq
            RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
            PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
            COMPONENT Runtime)
  endif ()
else ()
  install (TARGETS ${target_outputs}
          EXPORT ${PROJECT_NAME}-targets
          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
          ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
          LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
          FRAMEWORK DESTINATION "Library/Frameworks"
          PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
endif ()

# install (FILES ${public_headers}
#          DESTINATION include
#          COMPONENT SDK)

#if (NOT ZMQ_BUILD_FRAMEWORK)
#  file (GLOB private_headers "${CMAKE_CURRENT_SOURCE_DIR}/src/*.hpp")
#  install (FILES ${sources} ${private_headers} DESTINATION src/zmq
#          COMPONENT SourceCode)
#endif ()

foreach (readme ${readme-docs})
  configure_file (${CMAKE_CURRENT_SOURCE_DIR}/${readme} ${CMAKE_CURRENT_BINARY_DIR}/${readme}.txt)

  if (NOT ZMQ_BUILD_FRAMEWORK)
    install (FILES ${CMAKE_CURRENT_BINARY_DIR}/${readme}.txt DESTINATION share/zmq)
  endif ()
endforeach ()

if (WITH_DOC)
  if (NOT ZMQ_BUILD_FRAMEWORK)
    install (FILES ${html-docs} DESTINATION doc/zmq COMPONENT RefGuide)
  endif ()
endif ()

include(CMakePackageConfigHelpers)

if (WIN32)
  set(ZEROMQ_CMAKECONFIG_INSTALL_DIR "CMake" CACHE STRING "install path for ZeroMQConfig.cmake")
else()
  # GNUInstallDirs "DATADIR" wrong here; CMake search path wants "share".
  set(ZEROMQ_CMAKECONFIG_INSTALL_DIR "share/cmake/${PROJECT_NAME}" CACHE STRING "install path for ZeroMQConfig.cmake")
endif()

if (NOT CMAKE_VERSION VERSION_LESS 3.0)
  export(EXPORT ${PROJECT_NAME}-targets
         FILE "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Targets.cmake")
endif()
configure_package_config_file(builds/cmake/${PROJECT_NAME}Config.cmake.in
                              "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
                              INSTALL_DESTINATION ${ZEROMQ_CMAKECONFIG_INSTALL_DIR})
write_basic_package_version_file(${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
                                 VERSION ${ZMQ_VERSION_MAJOR}.${ZMQ_VERSION_MINOR}.${ZMQ_VERSION_PATCH}
                                 COMPATIBILITY AnyNewerVersion)
install(EXPORT ${PROJECT_NAME}-targets
        FILE ${PROJECT_NAME}Targets.cmake
        DESTINATION ${ZEROMQ_CMAKECONFIG_INSTALL_DIR})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
              ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
              DESTINATION ${ZEROMQ_CMAKECONFIG_INSTALL_DIR})

option(ENABLE_CPACK "Enables cpack rules" ON)
if (MSVC AND ENABLE_CPACK)
  include (InstallRequiredSystemLibraries)

  if (CMAKE_CL_64)
    set (arch_name "x64")
  else ()
    set (arch_name "x86")
  endif ()

  set (CPACK_NSIS_DISPLAY_NAME "ZeroMQ ${ZMQ_VERSION_MAJOR}.${ZMQ_VERSION_MINOR}.${ZMQ_VERSION_PATCH} (${arch_name})")
  set (CPACK_PACKAGE_FILE_NAME "ZeroMQ-${ZMQ_VERSION_MAJOR}.${ZMQ_VERSION_MINOR}.${ZMQ_VERSION_PATCH}-${arch_name}")

  # TODO: I think this part was intended to be used when running cpack
  # separately from cmake but I don't know how that works.
  #
  # macro (add_crt_version version)
  #   set (rel_dir "${CMAKE_CURRENT_BINARY_DIR}/build/${arch_name}/${version};ZeroMQ;ALL;/")
  #   set (debug_dir "${CMAKE_CURRENT_BINARY_DIR}/debug/${arch_name}/${version};ZeroMQ;ALL;/")
  #   if (EXISTS ${rel_dir})
  #     list (APPEND CPACK_INSTALL_CMAKE_PROJECTS ${rel_dir})
  #   endif ()

  #   if (EXISTS ${debug_dir})
  #     list (APPEND CPACK_INSTALL_CMAKE_PROJECTS ${rel_dir})
  #   endmacro ()
  # endmacro ()

  # add_crt_version (v110)
  # add_crt_version (v100)
  # add_crt_version (v90)

  list (APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_BINARY_DIR})
  set (CPACK_GENERATOR "NSIS")
  set (CPACK_PACKAGE_NAME "ZeroMQ")
  set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "ZeroMQ lightweight messaging kernel")
  set (CPACK_PACKAGE_VENDOR "Miru")
  set (CPACK_NSIS_CONTACT "Steven McCoy <Steven.McCoy@miru.hk>")
  set (CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_BINARY_DIR}\\\\COPYING.txt")
#  set (CPACK_RESOURCE_FILE_README "${CMAKE_CURRENT_BINARY_DIR}\\\\README.txt")
#  set (CPACK_RESOURCE_FILE_WELCOME "${CMAKE_CURRENT_BINARY_DIR}\\\\WELCOME.txt")
  # There is a bug in NSI that does not handle full unix paths properly. Make
  # sure there is at least one set of four (4) backslashes.
  set (CPACK_NSIS_MUI_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\installer.ico")
  set (CPACK_NSIS_MUI_UNIICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\installer.ico")

  set (CPACK_PACKAGE_ICON "${CMAKE_CURRENT_SOURCE_DIR}\\\\branding.bmp")
  set (CPACK_NSIS_COMPRESSOR "/SOLID lzma")
  set (CPACK_PACKAGE_VERSION ${ZMQ_VERSION})
  set (CPACK_PACKAGE_VERSION_MAJOR ${ZMQ_VERSION_MAJOR})
  set (CPACK_PACKAGE_VERSION_MINOR ${ZMQ_VERSION_MINOR})
  set (CPACK_PACKAGE_VERSION_PATCH ${ZMQ_VERSION_PATCH})
#  set (CPACK_PACKAGE_INSTALL_DIRECTORY "ZMQ Install Directory")
#  set (CPACK_TEMPORARY_DIRECTORY "ZMQ Temporary CPack Directory")

  include (CPack)

  cpack_add_component_group (Development
    DISPLAY_NAME "ZeroMQ software development kit"
    EXPANDED)
  cpack_add_component (PerfTools
    DISPLAY_NAME "ZeroMQ performance tools"
    INSTALL_TYPES FullInstall DevInstall)
  cpack_add_component (SourceCode
    DISPLAY_NAME "ZeroMQ source code"
    DISABLED
    INSTALL_TYPES FullInstall)
  cpack_add_component (SDK
    DISPLAY_NAME "ZeroMQ headers and libraries"
    INSTALL_TYPES FullInstall DevInstall
    GROUP Development)
  if (WITH_DOC)
    cpack_add_component (RefGuide
      DISPLAY_NAME "ZeroMQ reference guide"
      INSTALL_TYPES FullInstall DevInstall
      GROUP Development)
  endif ()
  cpack_add_component (Runtime
    DISPLAY_NAME "ZeroMQ runtime files"
    REQUIRED
    INSTALL_TYPES FullInstall DevInstall MinInstall)
  cpack_add_install_type (FullInstall
    DISPLAY_NAME "Full install, including source code")
  cpack_add_install_type (DevInstall
    DISPLAY_NAME "Developer install, headers and libraries")
  cpack_add_install_type (MinInstall
    DISPLAY_NAME "Minimal install, runtime only")
endif ()

# Export this for library to help build this as a sub-project
set (ZEROMQ_LIBRARY libzmq CACHE STRING "ZeroMQ library")

# Workaround for MSVS10 to avoid the Dialog Hell
# FIXME: This could be removed with future version of CMake.
if (MSVC_VERSION EQUAL 1600)
  set (ZMQ_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/ZeroMQ.sln")
  if (EXISTS "${ZMQ_SLN_FILENAME}")
    file (APPEND "${ZMQ_SLN_FILENAME}" "\n# This should be regenerated!\n")
  endif ()
endif ()

include(ClangFormat)
