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  • cmake_minimum_required(VERSION 2.8)
    
    if(NOT DEFINED CMAKE_BUILD_TYPE)
    	set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type")
    endif()
    
    
    project(libwebsockets C)
    
    set(CPACK_PACKAGE_NAME "${PACKAGE}")
    set(CPACK_PACKAGE_VERSION_MAJOR "1")
    
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    set(CPACK_PACKAGE_VERSION_MINOR "6")
    
    set(CPACK_PACKAGE_VERSION_PATCH "3")
    
    set(CPACK_PACKAGE_VERSION "${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}")
    
    set(CPACK_PACKAGE_VENDOR "andy@warmcat.com")
    set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "${PACKAGE} ${PACKAGE_VERSION}")
    
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    set(SOVERSION "6")
    
    set(CPACK_SOURCE_GENERATOR "TGZ")
    set(CPACK_SOURCE_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}")
    set(VERSION "${CPACK_PACKAGE_VERSION}")
    
    set(LWS_LIBRARY_VERSION ${CPACK_PACKAGE_VERSION})
    
    set(LWS_LIBRARY_VERSION_MAJOR ${CPACK_PACKAGE_VERSION_MAJOR})
    set(LWS_LIBRARY_VERSION_MINOR ${CPACK_PACKAGE_VERSION_MINOR})
    set(LWS_LIBRARY_VERSION_PATCH ${CPACK_PACKAGE_VERSION_PATCH})
    
    
    set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake/")
    
    message(STATUS "CMAKE_TOOLCHAIN_FILE='${CMAKE_TOOLCHAIN_FILE}'")
    
    
    # Try to find the current Git hash.
    find_package(Git)
    if(GIT_EXECUTABLE)
    	execute_process(
    
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        WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
    
        COMMAND "${GIT_EXECUTABLE}" log -n 1 --pretty=%h
        OUTPUT_VARIABLE GIT_HASH
        OUTPUT_STRIP_TRAILING_WHITESPACE
        )
    
        set(LWS_BUILD_HASH ${GIT_HASH})
        message("Git commit hash: ${LWS_BUILD_HASH}")
    endif()
    
    
    set(LWS_USE_BUNDLED_ZLIB_DEFAULT OFF)
    if(WIN32)
    	set(LWS_USE_BUNDLED_ZLIB_DEFAULT ON)
    endif()
    
    option(LWS_WITH_STATIC "Build the static version of the library" ON)
    option(LWS_WITH_SHARED "Build the shared version of the library" ON)
    
    option(LWS_WITH_SSL "Include SSL support (default OpenSSL, wolfSSL if LWS_USE_WOLFSSL is set)" ON)
    
    option(LWS_USE_CYASSL "Use CyaSSL replacement for OpenSSL. When setting this, you also need to specify LWS_CYASSL_LIBRARIES and LWS_CYASSL_INCLUDE_DIRS" OFF)
    option(LWS_USE_WOLFSSL "Use wolfSSL replacement for OpenSSL. When setting this, you also need to specify LWS_WOLFSSL_LIBRARIES and LWS_WOLFSSL_INCLUDE_DIRS" OFF)
    
    option(LWS_WITH_ZLIB "Include zlib support (required for extensions)" ON)
    option(LWS_WITH_LIBEV "Compile with support for libev" OFF)
    option(LWS_USE_BUNDLED_ZLIB "Use bundled zlib version (Windows only)" ${LWS_USE_BUNDLED_ZLIB_DEFAULT})
    
    option(LWS_SSL_CLIENT_USE_OS_CA_CERTS "SSL support should make use of the OS-installed CA root certs" ON)
    option(LWS_WITHOUT_BUILTIN_GETIFADDRS "Don't use the BSD getifaddrs implementation from libwebsockets if it is missing (this will result in a compilation error) ... The default is to assume that your libc provides it. On some systems such as uclibc it doesn't exist." OFF)
    
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    option(LWS_WITHOUT_BUILTIN_SHA1 "Don't build the lws sha-1 (eg, because openssl will provide it" OFF)
    
    option(LWS_WITHOUT_CLIENT "Don't build the client part of the library" OFF)
    option(LWS_WITHOUT_SERVER "Don't build the server part of the library" OFF)
    option(LWS_LINK_TESTAPPS_DYNAMIC "Link the test apps to the shared version of the library. Default is to link statically" OFF)
    option(LWS_WITHOUT_TESTAPPS "Don't build the libwebsocket-test-apps" OFF)
    option(LWS_WITHOUT_TEST_SERVER "Don't build the test server" OFF)
    option(LWS_WITHOUT_TEST_SERVER_EXTPOLL "Don't build the test server version that uses external poll" OFF)
    option(LWS_WITHOUT_TEST_PING "Don't build the ping test application" OFF)
    option(LWS_WITHOUT_TEST_CLIENT "Don't build the client test application" OFF)
    option(LWS_WITHOUT_TEST_FRAGGLE "Don't build the ping test application" OFF)
    option(LWS_WITHOUT_EXTENSIONS "Don't compile with extensions" OFF)
    option(LWS_WITH_LATENCY "Build latency measuring code into the library" OFF)
    
    option(LWS_WITHOUT_DAEMONIZE "Don't build the daemonization api" ON)
    
    option(LWS_IPV6 "Compile with support for ipv6" OFF)
    
    option(LWS_WITH_HTTP2 "Compile with support for http2" OFF)
    
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    option(LWS_MBED3 "Platform is MBED3" OFF)
    
    if (DEFINED YOTTA_WEBSOCKETS_VERSION_STRING)
    
    set(LWS_WITH_SHARED OFF)
    set(LWS_WITH_SSL OFF)
    set(LWS_WITH_ZLIB OFF)
    set(LWS_WITHOUT_CLIENT ON)
    set(LWS_WITHOUT_TESTAPPS ON)
    set(LWS_WITHOUT_EXTENSIONS ON)
    set(LWS_MBED3 ON)
    
    endif()
    
    if (DEFINED YOTTA_WEBSOCKETS_VERSION_STRING)
    
    set(LWS_WITH_SHARED OFF)
    set(LWS_WITH_SSL OFF)
    set(LWS_WITH_ZLIB OFF)
    set(LWS_WITHOUT_CLIENT ON)
    set(LWS_WITHOUT_TESTAPPS ON)
    set(LWS_WITHOUT_EXTENSIONS ON)
    set(LWS_MBED3 ON)
    
    endif()
    
    
    
    # Allow the user to override installation directories.
    set(LWS_INSTALL_LIB_DIR       lib CACHE PATH "Installation directory for libraries")
    set(LWS_INSTALL_BIN_DIR       bin CACHE PATH "Installation directory for executables")
    set(LWS_INSTALL_INCLUDE_DIR   include CACHE PATH "Installation directory for header files")
    set(LWS_INSTALL_EXAMPLES_DIR  bin CACHE PATH "Installation directory for example files")
    
    
    # Allow the user to use the old CyaSSL options/library in stead of wolfSSL
    if (LWS_USE_CYASSL AND LWS_USE_WOLFSSL)
    	message(FATAL_ERROR "LWS_USE_CYASSL and LWS_USE_WOLFSSL are mutually exclusive!")
    endif()
    if (LWS_USE_CYASSL)
    	# Copy CyaSSL options to the wolfSSL options
    	set(LWS_USE_WOLFSSL ${LWS_USE_CYASSL} CACHE BOOL "Use wolfSSL/CyaSSL instead of OpenSSL" FORCE)
    	set(LWS_WOLFSSL_LIBRARIES ${LWS_CYASSL_LIBRARIES} CACHE PATH "Path to wolfSSL/CyaSSL libraries" FORCE)
    	set(LWS_WOLFSSL_INCLUDE_DIRS ${LWS_CYASSL_INCLUDE_DIRS} CACHE PATH "Path to wolfSSL/CyaSSL header files" FORCE)
    endif()
    
    
    if (LWS_WITHOUT_CLIENT AND LWS_WITHOUT_SERVER)
    
    	message(FATAL_ERROR "Makes no sense to compile with neither client nor server.")
    
    if (NOT (LWS_WITH_STATIC OR LWS_WITH_SHARED))
    
    	message(FATAL_ERROR "Makes no sense to compile with neither static nor shared libraries.")
    
    endif()
    
    if (NOT LWS_WITHOUT_EXTENSIONS)
    	if (NOT LWS_WITH_ZLIB)
    		message(FATAL_ERROR "zlib is required for extensions.")
    	endif()
    endif()
    
    set(LWS_ZLIB_LIBRARIES CACHE PATH "Path to the zlib library")
    set(LWS_ZLIB_INCLUDE_DIRS CACHE PATH "Path to the zlib include directory")
    set(LWS_OPENSSL_LIBRARIES CACHE PATH "Path to the OpenSSL library")
    set(LWS_OPENSSL_INCLUDE_DIRS CACHE PATH "Path to the OpenSSL include directory")
    
    set(LWS_WOLFSSL_LIBRARIES CACHE PATH "Path to the wolfSSL library")
    set(LWS_WOLFSSL_INCLUDE_DIRS CACHE PATH "Path to the wolfSSL include directory")
    
    set(LWS_LIBEV_LIBRARIES CACHE PATH "Path to the libev library")
    set(LWS_LIBEV_INCLUDE_DIRS CACHE PATH "Path to the libev include directory")
    
    
    if (NOT LWS_WITH_SSL)
    	set(LWS_WITHOUT_BUILTIN_SHA1 OFF)
    endif()
    
    
    if (LWS_WITH_SSL AND NOT LWS_USE_WOLFSSL)
    
    	if ("${LWS_OPENSSL_LIBRARIES}" STREQUAL "" OR "${LWS_OPENSSL_INCLUDE_DIRS}" STREQUAL "")
    	else()
    		set(OPENSSL_LIBRARIES ${LWS_OPENSSL_LIBRARIES})
    		set(OPENSSL_INCLUDE_DIRS ${LWS_OPENSSL_INCLUDE_DIRS})
    		set(OPENSSL_FOUND 1)
    	endif()
    endif()
    
    
    if (LWS_WITH_SSL AND LWS_USE_WOLFSSL)
    	if ("${LWS_WOLFSSL_LIBRARIES}" STREQUAL "" OR "${LWS_WOLFSSL_INCLUDE_DIRS}" STREQUAL "")
    		if (NOT WOLFSSL_FOUND)
    
    			if (LWS_USE_CYASSL)
    				message(FATAL_ERROR "You must set LWS_CYASSL_LIBRARIES and LWS_CYASSL_INCLUDE_DIRS when LWS_USE_CYASSL is turned on.")
    			else()
    				message(FATAL_ERROR "You must set LWS_WOLFSSL_LIBRARIES and LWS_WOLFSSL_INCLUDE_DIRS when LWS_USE_WOLFSSL is turned on.")
    			endif()
    
    		set(WOLFSSL_LIBRARIES ${LWS_WOLFSSL_LIBRARIES})
    		set(WOLFSSL_INCLUDE_DIRS ${LWS_WOLFSSL_INCLUDE_DIRS})
    		set(WOLFSSL_FOUND 1)
    
    	set(USE_WOLFSSL 1)
    
    	if (LWS_USE_CYASSL)
    		set(USE_OLD_CYASSL 1)
    	endif()
    
    endif()
    
    if (LWS_WITH_ZLIB AND NOT LWS_USE_BUNDLED_ZLIB)
    	if ("${LWS_ZLIB_LIBRARIES}" STREQUAL "" OR "${LWS_ZLIB_INCLUDE_DIRS}" STREQUAL "")
    	else()
    		set(ZLIB_LIBRARIES ${LWS_ZLIB_LIBRARIES})
    		set(ZLIB_INCLUDE_DIRS ${LWS_ZLIB_INCLUDE_DIRS})
    		set(ZLIB_FOUND 1)
    	endif()
    endif()
    
    if (LWS_WITH_LIBEV)
    	if ("${LWS_LIBEV_LIBRARIES}" STREQUAL "" OR "${LWS_LIBEV_INCLUDE_DIRS}" STREQUAL "")
    	else()
    		set(LIBEV_LIBRARIES ${LWS_LIBEV_LIBRARIES})
    		set(LIBEV_INCLUDE_DIRS ${LWS_LIBEV_INCLUDE_DIRS})
    		set(LIBEV_FOUND 1)
    	endif()
    endif()
    
    # FIXME: This must be runtime-only option.
    
    # The base dir where the test-apps look for the SSL certs.
    
    set(LWS_OPENSSL_CLIENT_CERTS ../share CACHE PATH "Server SSL certificate directory")
    if (WIN32)
    	set(LWS_OPENSSL_CLIENT_CERTS . CACHE PATH "Client SSL certificate directory")
    
    
    	if (LWS_IPV6)
    		set(LWS_IPV6 OFF)
    
    		message(WARNING "IPv6 does not currently work on Windows!")
    
    	set(LWS_OPENSSL_CLIENT_CERTS /etc/pki/tls/certs/ CACHE PATH "Client SSL certificate directory")
    
    if (LWS_WITHOUT_EXTENSIONS)
    
    if (LWS_WITH_SSL)
    
    if (LWS_SSL_CLIENT_USE_OS_CA_CERTS)
    	set(LWS_SSL_CLIENT_USE_OS_CA_CERTS 1)
    endif()
    
    
    if (LWS_WITH_LATENCY)
    
    if (LWS_WITHOUT_DAEMONIZE OR WIN32)
    
    if (LWS_WITHOUT_SERVER)
    
    if (LWS_WITHOUT_CLIENT)
    
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    if (LWS_WITH_LIBEV)
    	set(LWS_USE_LIBEV 1)
    endif()
    
    
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    if (LWS_IPV6)
    	set(LWS_USE_IPV6 1)
    
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    endif()
    
    
    if (LWS_WITH_HTTP2)
    	set(LWS_USE_HTTP2 1)
    endif()
    
    
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    if (LWS_MBED3)
    	set(CMAKE_C_FLAGS "-D_DEBUG ${CMAKE_C_FLAGS}")
    endif()
    
    
    if (MINGW)
    	set(LWS_MINGW_SUPPORT 1)
    
    	set(CMAKE_C_FLAGS "-D__USE_MINGW_ANSI_STDIO ${CMAKE_C_FLAGS}")
    
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    include_directories("${PROJECT_BINARY_DIR}")
    
    include(CheckCSourceCompiles)
    
    # Check for different inline keyword versions.
    foreach(KEYWORD "inline" "__inline__" "__inline")
    	set(CMAKE_REQUIRED_DEFINITIONS "-DKEYWORD=${KEYWORD}")
    	CHECK_C_SOURCE_COMPILES(
    		"
    		#include <stdio.h>
    
    		static KEYWORD void a() {}
    
    		int main(int argc, char **argv) { a(); return 0; }
    
    		" LWS_HAVE_${KEYWORD})
    
    if (NOT LWS_HAVE_inline)
    	if (LWS_HAVE___inline__)
    
    		set(inline __inline__)
    
    	elseif(LWS_HAVE___inline)
    
    		set(inline __inline)
    	endif()
    endif()
    
    
    # Put the libaries and binaries that get built into directories at the
    # top of the build tree rather than in hard-to-find leaf directories. 
    
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    SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin")
    SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
    SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib")
    
    # Put absolute path of dynamic libraries into the object code. Some
    # architectures, notably Mac OS X, need this.
    
    SET(CMAKE_INSTALL_NAME_DIR "${CMAKE_INSTALL_PREFIX}/${LWS_INSTALL_LIB_DIR}${LIB_SUFFIX}")
    
    include(CheckFunctionExists)
    include(CheckIncludeFile)
    include(CheckIncludeFiles)
    include(CheckLibraryExists)
    
    include(CheckTypeSize)
    
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    if (LWS_WITHOUT_BUILTIN_SHA1)
    	set(LWS_SHA1_USE_OPENSSL_NAME 1)
    endif()
    
    
    CHECK_FUNCTION_EXISTS(bzero LWS_HAVE_BZERO)
    CHECK_FUNCTION_EXISTS(fork LWS_HAVE_FORK)
    CHECK_FUNCTION_EXISTS(getenv LWS_HAVE_GETENV)
    CHECK_FUNCTION_EXISTS(malloc LWS_HAVE_MALLOC)
    CHECK_FUNCTION_EXISTS(memset LWS_HAVE_MEMSET)
    CHECK_FUNCTION_EXISTS(realloc LWS_HAVE_REALLOC)
    CHECK_FUNCTION_EXISTS(socket LWS_HAVE_SOCKET)
    CHECK_FUNCTION_EXISTS(strerror LWS_HAVE_STRERROR)
    CHECK_FUNCTION_EXISTS(vfork LWS_HAVE_VFORK)
    CHECK_FUNCTION_EXISTS(getifaddrs LWS_HAVE_GETIFADDRS)
    
    if (NOT LWS_HAVE_GETIFADDRS)
    
    	if (LWS_WITHOUT_BUILTIN_GETIFADDRS)
    		message(FATAL_ERROR "No getifaddrs was found on the system. Turn off the LWS_WITHOUT_BUILTIN_GETIFADDRS compile option to use the supplied BSD version.")
    
    	endif()
    	set(LWS_BUILTIN_GETIFADDRS 1)
    
    CHECK_INCLUDE_FILE(dlfcn.h LWS_HAVE_DLFCN_H)
    CHECK_INCLUDE_FILE(fcntl.h LWS_HAVE_FCNTL_H)
    CHECK_INCLUDE_FILE(in6addr.h LWS_HAVE_IN6ADDR_H)
    CHECK_INCLUDE_FILE(inttypes.h LWS_HAVE_INTTYPES_H)
    CHECK_INCLUDE_FILE(memory.h LWS_HAVE_MEMORY_H)
    CHECK_INCLUDE_FILE(netinet/in.h LWS_HAVE_NETINET_IN_H)
    CHECK_INCLUDE_FILE(stdint.h LWS_HAVE_STDINT_H)
    CHECK_INCLUDE_FILE(stdlib.h LWS_HAVE_STDLIB_H)
    CHECK_INCLUDE_FILE(strings.h LWS_HAVE_STRINGS_H)
    CHECK_INCLUDE_FILE(string.h LWS_HAVE_STRING_H)
    CHECK_INCLUDE_FILE(sys/prctl.h LWS_HAVE_SYS_PRCTL_H)
    CHECK_INCLUDE_FILE(sys/socket.h LWS_HAVE_SYS_SOCKET_H)
    CHECK_INCLUDE_FILE(sys/stat.h LWS_HAVE_SYS_STAT_H)
    CHECK_INCLUDE_FILE(sys/types.h LWS_HAVE_SYS_TYPES_H)
    CHECK_INCLUDE_FILE(unistd.h LWS_HAVE_UNISTD_H)
    CHECK_INCLUDE_FILE(vfork.h LWS_HAVE_VFORK_H)
    
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    if (LWS_WITH_ZLIB AND NOT LWS_USE_BUNDLED_ZLIB)
    	CHECK_INCLUDE_FILE(zlib.h LWS_HAVE_ZLIB_H)
    endif()
    
    # TODO: These can also be tested to see whether they actually work...
    
    set(LWS_HAVE_WORKING_FORK LWS_HAVE_FORK)
    set(LWS_HAVE_WORKING_VFORK LWS_HAVE_VFORK)
    
    
    CHECK_INCLUDE_FILES("stdlib.h;stdarg.h;string.h;float.h" STDC_HEADERS)
    
    
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    # These don't work Cross...
    #CHECK_TYPE_SIZE(pid_t PID_T_SIZE)
    #CHECK_TYPE_SIZE(size_t SIZE_T_SIZE)
    #CHECK_TYPE_SIZE("void *" LWS_SIZEOFPTR LANGUAGE C)
    
    
    if (NOT PID_T_SIZE)
    
    endif()
    
    if (NOT SIZE_T_SIZE)
    
    if (NOT LWS_HAVE_MALLOC)
    
    if (NOT LWS_HAVE_REALLOC)
    
    # Generate the lws_config.h that includes all the public compilation settings.
    
           "${PROJECT_SOURCE_DIR}/lws_config.h.in"
    
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           "${PROJECT_BINARY_DIR}/lws_config.h")
    
    # Generate the lws_config.h that includes all the private compilation settings.
    configure_file(
           "${PROJECT_SOURCE_DIR}/lws_config_private.h.in"
           "${PROJECT_BINARY_DIR}/lws_config_private.h")
    
    
    if (MSVC)
    	# Turn off stupid microsoft security warnings.
    	add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
    
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    include_directories("${PROJECT_SOURCE_DIR}/lib")
    
    # Group headers and sources.
    # Some IDEs use this for nicer file structure.
    
    	lib/private-libwebsockets.h)
    
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    	"${PROJECT_SOURCE_DIR}/lib/libwebsockets.h"
    
    	"${PROJECT_BINARY_DIR}/lws_config.h")
    
    
    set(SOURCES
    	lib/base64-decode.c
    	lib/handshake.c
    	lib/libwebsockets.c
    
    	lib/header.c)
    
    if (NOT LWS_WITHOUT_CLIENT)
    
    	list(APPEND SOURCES
    		lib/client.c
    		lib/client-handshake.c
    
    if (LWS_WITH_SSL)
    	list(APPEND SOURCES
    
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    if (NOT LWS_WITHOUT_BUILTIN_SHA1)
    	list(APPEND SOURCES
    		lib/sha-1.c)
    endif()
    
    
    if (LWS_WITH_HTTP2)
    	list(APPEND SOURCES
    
    		lib/http2.c
    
    endif()
    
    # select the active platform files
    
    if (WIN32)
    	list(APPEND SOURCES
    
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    	if (LWS_MBED3)
    		list(APPEND SOURCES
    			lib/lws-plat-mbed3.cpp
    			lib/lws-plat-mbed3.c)
    	else()
    		list(APPEND SOURCES
    			lib/lws-plat-unix.c)
    	endif()
    
    if (NOT LWS_WITHOUT_SERVER)
    
    	list(APPEND SOURCES
    		lib/server.c
    
    		lib/server-handshake.c)
    
    if (NOT LWS_WITHOUT_EXTENSIONS)
    
    	list(APPEND HDR_PRIVATE
    		lib/extension-deflate-frame.h
    
    		lib/extension-deflate-stream.h)
    
    	list(APPEND SOURCES
    		lib/extension.c
    		lib/extension-deflate-frame.c
    
    		lib/extension-deflate-stream.c)
    
    if (LWS_WITH_LIBEV)
    	list(APPEND SOURCES
    
    endif(LWS_WITH_LIBEV)
    
    
    # Add helper files for Windows.
    if (WIN32)
    
    	set(WIN32_HELPERS_PATH win32port/win32helpers)
    	include_directories(${WIN32_HELPERS_PATH})
    
    	if (NOT LWS_WITHOUT_DAEMONIZE)
    
    	if (NOT LWS_HAVE_GETIFADDRS)
    
    		list(APPEND HDR_PRIVATE lib/getifaddrs.h)
    
    		list(APPEND SOURCES lib/getifaddrs.c)
    	endif()
    
    if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR (CMAKE_C_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
    
        include (CheckCCompilerFlag)
    
        CHECK_C_COMPILER_FLAG(-fvisibility=hidden LWS_HAVE_VISIBILITY)
        if (LWS_HAVE_VISIBILITY)
    
                    set(VISIBILITY_FLAG -fvisibility=hidden)
        endif()
    
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        if (UNIX)
    
                   set(CMAKE_C_FLAGS "-Wall -Werror ${VISIBILITY_FLAG} ${CMAKE_C_FLAGS}" )
    
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        else(UNIX)
    
                   set(CMAKE_C_FLAGS "-Wall ${VISIBILITY_FLAG} ${CMAKE_C_FLAGS}" )
    
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        endif(UNIX)
    
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    if ((CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX) AND NOT LWS_WITHOUT_TESTAPPS)
    
        if (UNIX)
    	# jeez clang understands -pthread but dies if he sees it at link time!
    	# http://stackoverflow.com/questions/2391194/what-is-gs-pthread-equiv-in-clang
    	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread" )
        endif()
    endif()
    
    
    if ((CMAKE_C_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
    	# otherwise osx blows a bunch of openssl deprecated api errors
    	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations" )
    endif()
    
    
    source_group("Headers Private"  FILES ${HDR_PRIVATE})
    source_group("Headers Public"   FILES ${HDR_PUBLIC})
    source_group("Sources"          FILES ${SOURCES})
    
    #
    # Create the lib.
    #
    
    if (LWS_WITH_STATIC)
    	add_library(websockets STATIC
    				${HDR_PRIVATE}
    				${HDR_PUBLIC}
    				${SOURCES})
    	list(APPEND LWS_LIBRARIES websockets)
    
    
    	if (WIN32)
    		# Windows uses the same .lib ending for static libraries and shared
    		# library linker files, so rename the static library.
    		set_target_properties(websockets
    			PROPERTIES
    			OUTPUT_NAME websockets_static)
    	endif()
    
    if (LWS_WITH_SHARED)
    	add_library(websockets_shared SHARED
    				${HDR_PRIVATE}
    				${HDR_PUBLIC}
    				${SOURCES})
    	list(APPEND LWS_LIBRARIES websockets_shared)
    
    	# We want the shared lib to be named "libwebsockets"
    	# not "libwebsocket_shared".
    	set_target_properties(websockets_shared
    		PROPERTIES
    		OUTPUT_NAME websockets)
    
    	if (WIN32)
    
    		# Compile as DLL (export function declarations)
    		set_property(
    			TARGET websockets_shared
    			PROPERTY COMPILE_DEFINITIONS
    			LWS_DLL
    			LWS_INTERNAL)
    	endif()
    
    		set_property(TARGET websockets_shared PROPERTY MACOSX_RPATH YES)
    	endif()
    endif()
    
    
    # Set the so version of the lib.
    
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    # Equivalent to LDFLAGS=-version-info x:x:x
    
    if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX OR (CMAKE_C_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
    
    	foreach(lib ${LWS_LIBRARIES})
    		set_target_properties(${lib}
    
    			PROPERTIES
    			SOVERSION ${SOVERSION})
    	endforeach()
    
    #
    # Find libraries.
    #
    
    
    # ZLIB (Only needed for deflate extensions).
    
    if (LWS_WITH_ZLIB)
    	if (LWS_USE_BUNDLED_ZLIB)
    		if (WIN32)
    			set(WIN32_ZLIB_PATH "win32port/zlib")
    			set(ZLIB_SRCS
    				${WIN32_ZLIB_PATH}/adler32.c
    				${WIN32_ZLIB_PATH}/compress.c
    				${WIN32_ZLIB_PATH}/crc32.c
    				${WIN32_ZLIB_PATH}/deflate.c
    				${WIN32_ZLIB_PATH}/gzclose.c
    				${WIN32_ZLIB_PATH}/gzio.c
    				${WIN32_ZLIB_PATH}/gzlib.c
    				${WIN32_ZLIB_PATH}/gzread.c
    				${WIN32_ZLIB_PATH}/gzwrite.c
    				${WIN32_ZLIB_PATH}/infback.c
    				${WIN32_ZLIB_PATH}/inffast.c
    				${WIN32_ZLIB_PATH}/inflate.c
    				${WIN32_ZLIB_PATH}/inftrees.c
    				${WIN32_ZLIB_PATH}/trees.c
    				${WIN32_ZLIB_PATH}/uncompr.c
    				${WIN32_ZLIB_PATH}/zutil.c)
    			add_library(zlib_internal STATIC ${ZLIB_SRCS})
    			set(ZLIB_INCLUDE_DIRS ${WIN32_ZLIB_PATH})
    			get_property(ZLIB_LIBRARIES TARGET zlib_internal PROPERTY LOCATION)
    			set(ZLIB_FOUND 1)
    			# Make sure zlib_internal is compiled before the libs.
    			foreach (lib ${LWS_LIBRARIES})
    				add_dependencies(${lib} zlib_internal)
    			endforeach()
    		else()
    			message(FATAL_ERROR "Don't have bundled zlib for that platform")
    		endif()
    	elseif (NOT ZLIB_FOUND)
    
    		find_package(ZLIB REQUIRED)
    	endif()
    
    	message("zlib include dirs: ${ZLIB_INCLUDE_DIRS}")
    	message("zlib libraries: ${ZLIB_LIBRARIES}")
    
    	include_directories(${ZLIB_INCLUDE_DIRS})
    	list(APPEND LIB_LIST ${ZLIB_LIBRARIES})
    
    if (LWS_WITH_SSL)
    
    	message("Compiling with SSL support")
    
    
    	if (LWS_USE_WOLFSSL)
    		# Use wolfSSL as OpenSSL replacement.
    
    		# TODO: Add a find_package command for this also.
    
    		message("wolfSSL include dir: ${WOLFSSL_INCLUDE_DIRS}")
    		message("wolfSSL libraries: ${WOLFSSL_LIBRARIES}")
    
    		# Additional to the root directory we need to include
    
    		# the wolfssl/ subdirectory which contains the OpenSSL
    
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    		# compatibility layer headers.
    
    		if (LWS_USE_CYASSL)
    			foreach(inc ${WOLFSSL_INCLUDE_DIRS})
    				include_directories("${inc}" "${inc}/cyassl")
    			endforeach()
    		else()
    			foreach(inc ${WOLFSSL_INCLUDE_DIRS})
    				include_directories("${inc}" "${inc}/wolfssl")
    			endforeach()
    		endif()
    
    		list(APPEND LIB_LIST "${WOLFSSL_LIBRARIES}")
    
    		if (NOT OPENSSL_FOUND)
    			# TODO: Add support for STATIC also.
    			find_package(OpenSSL REQUIRED)
    			set(OPENSSL_INCLUDE_DIRS "${OPENSSL_INCLUDE_DIR}")
    		endif()
    
    		message("OpenSSL include dir: ${OPENSSL_INCLUDE_DIRS}")
    
    		message("OpenSSL libraries: ${OPENSSL_LIBRARIES}")
    
    		include_directories("${OPENSSL_INCLUDE_DIRS}")
    
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    		list(APPEND LIB_LIST ${OPENSSL_LIBRARIES})
    
    endif(LWS_WITH_SSL)
    
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    if (LWS_WITH_LIBEV)
    
    	if (NOT LIBEV_FOUND)
    		find_path(LIBEV_INCLUDE_DIRS NAMES ev.h)
    		find_library(LIBEV_LIBRARIES NAMES ev)
    		if(LIBEV_INCLUDE_DIRS AND LIBEV_LIBRARIES)
    			set(LIBEV_FOUND 1)
    		endif()
    	endif()
    	message("libev include dir: ${LIBEV_INCLUDE_DIRS}")
    	message("libev libraries: ${LIBEV_LIBRARIES}")
    	include_directories("${LIBEV_INCLUDE_DIRS}")
    	list(APPEND LIB_LIST ${LIBEV_LIBRARIES})
    
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    endif(LWS_WITH_LIBEV)
    
    
    #
    # Platform specific libs.
    #
    
    if (WINCE)
    	list(APPEND LIB_LIST ws2.lib)
    elseif (WIN32)
    
    	list(APPEND LIB_LIST ws2_32.lib)
    
    	list(APPEND LIB_LIST m)
    
    # Setup the linking for all libs.
    
    foreach (lib ${LWS_LIBRARIES})
    
    	target_link_libraries(${lib} ${LIB_LIST})
    endforeach()
    
    #
    # Test applications
    #
    
    if (NOT LWS_WITHOUT_TESTAPPS)
    
    	#
    	# Helper function for adding a test app.
    	#
    
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    	macro(create_test_app TEST_NAME MAIN_SRC S2 S3 S4)
    
    		set(TEST_SRCS ${MAIN_SRC})
    		set(TEST_HDR)
    
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    		if ("${S2}" STREQUAL "")
    		else()
    			list(APPEND TEST_SRCS ${S2})
    		endif()
    		if ("${S3}" STREQUAL "")
    		else()
    			list(APPEND TEST_SRCS ${S3})
    		endif()
    		if ("${S4}" STREQUAL "")
    		else()
    			list(APPEND TEST_SRCS ${S4})
    		endif()
    
    			list(APPEND TEST_SRCS
    
    				${WIN32_HELPERS_PATH}/getopt.c
    				${WIN32_HELPERS_PATH}/getopt_long.c
    				${WIN32_HELPERS_PATH}/gettimeofday.c
    
    				${WIN32_HELPERS_PATH}/getopt.h
    				${WIN32_HELPERS_PATH}/gettimeofday.h
    
    		source_group("Headers Private"   FILES ${TEST_HDR})
    
    		source_group("Sources"   FILES ${TEST_SRCS})
    		add_executable(${TEST_NAME} ${TEST_SRCS} ${TEST_HDR})
    
    		if (LWS_LINK_TESTAPPS_DYNAMIC)
    
    			if (NOT LWS_WITH_SHARED)
    
    				message(FATAL_ERROR "Build of the shared library is disabled. LWS_LINK_TESTAPPS_DYNAMIC must be combined with LWS_WITH_SHARED.")
    
    			target_link_libraries(${TEST_NAME} websockets_shared)
    			add_dependencies(${TEST_NAME} websockets_shared)
    
    		else()
    			if (NOT LWS_WITH_STATIC)
    
    				message(FATAL_ERROR "Build of the static library is disabled. Disabled LWS_LINK_TESTAPPS_DYNAMIC must be combined with LWS_WITH_STATIC.")
    
    			target_link_libraries(${TEST_NAME} websockets)
    			add_dependencies(${TEST_NAME} websockets)
    
    		# Set test app specific defines.
    		set_property(TARGET ${TEST_NAME}
    
    					PROPERTY COMPILE_DEFINITIONS
    
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    						INSTALL_DATADIR="${CMAKE_INSTALL_PREFIX}/share"
    
    
    		# Prefix the binary names with libwebsockets.
    
    		set_target_properties(${TEST_NAME}
    
    			PROPERTIES
    			OUTPUT_NAME libwebsockets-${TEST_NAME})
    
    		# Add to the list of tests.
    
    		list(APPEND TEST_APP_LIST ${TEST_NAME})
    
    	if (LWS_WITH_SSL AND NOT LWS_USE_WOLFSSL)
    
    		message("Searching for OpenSSL executable and dlls")
    		find_package(OpenSSLbins)
    		message("OpenSSL executable: ${OPENSSL_EXECUTABLE}")
    	endif()
    
    
    	if (NOT LWS_WITHOUT_SERVER)
    
    		#
    		# test-server
    		#
    
    		if (NOT LWS_WITHOUT_TEST_SERVER)
    
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    			create_test_app(test-server "test-server/test-server.c" "test-server/test-server-http.c" "test-server/test-server-dumb-increment.c" "test-server/test-server-mirror.c")
    
    			if (UNIX AND NOT ((CMAKE_C_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang")))
    
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    				create_test_app(test-server-pthreads "test-server/test-server-pthreads.c" "test-server/test-server-http.c" "test-server/test-server-dumb-increment.c" "test-server/test-server-mirror.c")
    			endif()
    
    		if (NOT LWS_WITHOUT_TEST_SERVER_EXTPOLL)
    
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    			create_test_app(test-server-extpoll "test-server/test-server.c" "test-server/test-server-http.c" "test-server/test-server-dumb-increment.c" "test-server/test-server-mirror.c")
    
    			# Set defines for this executable only.
    			set_property(
    				TARGET test-server-extpoll
    				PROPERTY COMPILE_DEFINITIONS 
    					EXTERNAL_POLL 
    
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    					INSTALL_DATADIR="${CMAKE_INSTALL_PREFIX}/share"
    
    				)
    
    			# We need to link against winsock code.
    			if (WIN32)
    				target_link_libraries(test-server-extpoll ws2_32.lib)
    
    		# Data files for running the test server.
    		set(TEST_SERVER_DATA
    
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    			"${PROJECT_SOURCE_DIR}/test-server/favicon.ico"
    			"${PROJECT_SOURCE_DIR}/test-server/leaf.jpg"
    			"${PROJECT_SOURCE_DIR}/test-server/libwebsockets.org-logo.png"
    			"${PROJECT_SOURCE_DIR}/test-server/test.html")
    
    
    		# Generate self-signed SSL certs for the test-server.
    
    		if (LWS_WITH_SSL AND OPENSSL_EXECUTABLE AND NOT LWS_WITHOUT_TEST_SERVER)
    
    			message("Generating SSL Certificates for the test-server...")
    
    
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    			set(TEST_SERVER_SSL_KEY "${PROJECT_BINARY_DIR}/libwebsockets-test-server.key.pem")
    			set(TEST_SERVER_SSL_CERT "${PROJECT_BINARY_DIR}/libwebsockets-test-server.pem")
    
    				if (MINGW)
    					message("cmd = \"${OPENSSL_EXECUTABLE}\" req -new -newkey rsa:1024 -days 10000 -nodes -x509 -subj \"/C=GB/ST=Erewhon/L=All around/O=libwebsockets-test/CN=localhost\" -keyout \"${TEST_SERVER_SSL_KEY}\" -out \"${TEST_SERVER_SSL_CERT}\"")
    					execute_process(
    						COMMAND "${OPENSSL_EXECUTABLE}" req -new -newkey rsa:1024 -days 10000 -nodes -x509 -subj "/C=GB/ST=Erewhon/L=All around/O=libwebsockets-test/CN=localhost" -keyout "${TEST_SERVER_SSL_KEY}" -out "${TEST_SERVER_SSL_CERT}"
    						RESULT_VARIABLE OPENSSL_RETURN_CODE)
    				else()
    					file(WRITE "${PROJECT_BINARY_DIR}/openssl_input.txt"
    						"GB\n"
    						"Erewhon\n"
    						"All around\n"
    						"libwebsockets-test\n"
    						"localhost\n"
    						"none@invalid.org\n\n"
    						)
    
    					# The "type" command is a bit picky with paths.
    					file(TO_NATIVE_PATH "${PROJECT_BINARY_DIR}/openssl_input.txt" OPENSSL_INPUT_WIN_PATH)
    					message("OPENSSL_INPUT_WIN_PATH = ${OPENSSL_INPUT_WIN_PATH}")
    					message("cmd = \"${OPENSSL_EXECUTABLE}\" req -new -newkey rsa:1024 -days 10000 -nodes -x509 -keyout \"${TEST_SERVER_SSL_KEY}\" -out \"${TEST_SERVER_SSL_CERT}\"")
    
    					execute_process(
    						COMMAND cmd /c type "${OPENSSL_INPUT_WIN_PATH}"
    						COMMAND "${OPENSSL_EXECUTABLE}" req -new -newkey rsa:1024 -days 10000 -nodes -x509 -keyout "${TEST_SERVER_SSL_KEY}" -out "${TEST_SERVER_SSL_CERT}"
    						RESULT_VARIABLE OPENSSL_RETURN_CODE
    						OUTPUT_QUIET ERROR_QUIET)
    
    					message("\n")
    				endif()
    
    				if (OPENSSL_RETURN_CODE)
    
    					message(WARNING "!!! Failed to generate SSL certificate for Test Server using cmd.exe !!!:\nOpenSSL return code = ${OPENSSL_RETURN_CODE}")
    				else()
    					message("SUCCSESFULLY generated SSL certificate")
    
    				# Unix.
    
    				execute_process(
    					COMMAND printf "GB\\nErewhon\\nAll around\\nlibwebsockets-test\\n\\nlocalhost\\nnone@invalid.org\\n"
    
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    					COMMAND "${OPENSSL_EXECUTABLE}"
    						req -new -newkey rsa:1024 -days 10000 -nodes -x509 -keyout "${TEST_SERVER_SSL_KEY}" -out "${TEST_SERVER_SSL_CERT}"
    
    					RESULT_VARIABLE OPENSSL_RETURN_CODE
    					OUTPUT_QUIET ERROR_QUIET)
    
    
    				if (OPENSSL_RETURN_CODE)
    					message(WARNING "!!! Failed to generate SSL certificate for Test Server!!!:\nOpenSSL return code = ${OPENSSL_RETURN_CODE}")
    				else()
    
    					message("SUCCESSFULLY generated SSL certificate")
    
    			endif()
    
    			list(APPEND TEST_SERVER_DATA 
    
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    				"${TEST_SERVER_SSL_KEY}"
    				"${TEST_SERVER_SSL_CERT}")
    
    		add_custom_command(TARGET test-server
    						POST_BUILD 
    
    						COMMAND "${CMAKE_COMMAND}" -E make_directory "$<TARGET_FILE_DIR:test-server>/../share/libwebsockets-test-server")
    
    		# Copy the file needed to run the server so that the test apps can
    		# reach them from their default output location
    		foreach (TEST_FILE ${TEST_SERVER_DATA})
    
    			if (EXISTS ${TEST_FILE})
    				add_custom_command(TARGET test-server
    							POST_BUILD 
    
    							COMMAND "${CMAKE_COMMAND}" -E copy "${TEST_FILE}" "$<TARGET_FILE_DIR:test-server>/../share/libwebsockets-test-server" VERBATIM)
    
    	endif(NOT LWS_WITHOUT_SERVER)
    
    	if (NOT LWS_WITHOUT_CLIENT)
    
    		#
    		# test-client
    		#
    
    		if (NOT LWS_WITHOUT_TEST_CLIENT)
    
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    			create_test_app(test-client "test-server/test-client.c" "" "" "")
    
    		#
    		# test-fraggle
    		#
    
    		if (NOT LWS_WITHOUT_TEST_FRAGGLE)
    
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    			create_test_app(test-fraggle "test-server/test-fraggle.c" "" "" "")
    
    		if (NOT LWS_WITHOUT_TEST_PING)
    
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    			create_test_app(test-ping "test-server/test-ping.c" "" "" "")
    
    		#
    		# test-echo
    		#
    		if (NOT WITHOUT_TEST_ECHO)
    
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    			create_test_app(test-echo "test-server/test-echo.c" "" "" "")
    
    	endif(NOT LWS_WITHOUT_CLIENT)
    
    
    	#
    	# Copy OpenSSL dlls to the output directory on Windows.
    	# (Otherwise we'll get an error when trying to run)
    	#
    
    	if (WIN32 AND LWS_WITH_SSL AND NOT LWS_USE_WOLFSSL)
    
    		if(OPENSSL_BIN_FOUND)
    
    			message("OpenSSL dlls found:")
    			message("  Libeay: ${LIBEAY_BIN}")
    			message("  SSLeay: ${SSLEAY_BIN}")
    
    			foreach(TARGET_BIN ${TEST_APP_LIST})
    
    				add_custom_command(TARGET ${TARGET_BIN}
    
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    					COMMAND "${CMAKE_COMMAND}" -E copy "${LIBEAY_BIN}" "$<TARGET_FILE_DIR:${TARGET_BIN}>" VERBATIM)
    
    				add_custom_command(TARGET ${TARGET_BIN}
    
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    					COMMAND "${CMAKE_COMMAND}" -E copy "${SSLEAY_BIN}" "$<TARGET_FILE_DIR:${TARGET_BIN}>" VERBATIM)
    
    			endforeach()
    		endif()
    	endif()
    
    endif(NOT LWS_WITHOUT_TESTAPPS)
    
    
    if (UNIX)
    	# Generate documentation.
    	# TODO: Fix this on Windows.
    	message("Generating API documentation")
    
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    	file(GLOB C_FILES "${PROJECT_SOURCE_DIR}/lib/*.c")
    	execute_process(COMMAND "${CMAKE_COMMAND}" -E make_directory "${PROJECT_BINARY_DIR}/doc/")
    
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    		COMMAND "${PROJECT_SOURCE_DIR}/scripts/kernel-doc" -html ${C_FILES} ${HDR_PUBLIC}
    		OUTPUT_FILE "${PROJECT_BINARY_DIR}/doc/libwebsockets-api-doc.html"
    
    		ERROR_QUIET)
    
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    		COMMAND "${PROJECT_SOURCE_DIR}/scripts/kernel-doc" -text ${C_FILES} ${HDR_PUBLIC}
    		OUTPUT_FILE "${PROJECT_BINARY_DIR}/doc/libwebsockets-api-doc.txt"
    
    		ERROR_QUIET)
    
    
    # Generate and install pkgconfig.
    # (This is not indented, because the tabs will be part of the output)
    
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    file(WRITE "${PROJECT_BINARY_DIR}/libwebsockets.pc"
    
    "prefix=\"${CMAKE_INSTALL_PREFIX}\"
    
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    libdir=\${exec_prefix}/lib${LIB_SUFFIX}
    
    includedir=\${prefix}/include
    
    Name: libwebsockets
    Description: Websockets server and client library
    
    Version: ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH}
    
    
    Libs: -L\${libdir} -lwebsockets
    Cflags: -I\${includedir}"
    )
    
    
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    	install(FILES "${PROJECT_BINARY_DIR}/libwebsockets.pc"
    
    		DESTINATION lib${LIB_SUFFIX}/pkgconfig)
    
    #
    # Installation preparations.
    #
    
    if(WIN32 AND NOT CYGWIN)
      set(DEF_INSTALL_CMAKE_DIR cmake)
    else()
    
      set(DEF_INSTALL_CMAKE_DIR lib${LIB_SUFFIX}/cmake/libwebsockets)
    
    endif()
    
    set(LWS_INSTALL_CMAKE_DIR ${DEF_INSTALL_CMAKE_DIR} CACHE PATH "Installation directory for CMake files")
    
    # Export targets (This is used for other CMake projects to easily find the libraries and include files).
    
    export(TARGETS ${LWS_LIBRARIES}
    
            FILE "${PROJECT_BINARY_DIR}/LibwebsocketsTargets.cmake")
    export(PACKAGE libwebsockets)
    
    # Generate the config file for the build-tree.
    set(LWS__INCLUDE_DIRS 
        "${PROJECT_SOURCE_DIR}/lib"
        "${PROJECT_BINARY_DIR}")
    set(LIBWEBSOCKETS_INCLUDE_DIRS ${LWS__INCLUDE_DIRS} CACHE PATH "Libwebsockets include directories")
    configure_file(${PROJECT_SOURCE_DIR}/cmake/LibwebsocketsConfig.cmake.in
                    ${PROJECT_BINARY_DIR}/LibwebsocketsConfig.cmake 
                    @ONLY)
    
    # Generate the config file for the installation tree.