mirror of
https://github.com/warmcat/libwebsockets.git
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47e10ab200
This builds on the new dbus role support to provide a minimal example proxy between ws and dbus. A client app is provided that asks the proxy to connect to libwebsockets.org and proxy the drawing data from the mirror example there back to the dbus client using dbus messages.
122 lines
3.5 KiB
CMake
122 lines
3.5 KiB
CMake
cmake_minimum_required(VERSION 2.8)
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include(CheckCSourceCompiles)
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include(CheckLibraryExists)
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set(SAMP lws-minimal-dbus-ws-proxy)
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set(SRCS main.c)
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if (NOT LWS_WITH_MINIMAL_EXAMPLES)
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CHECK_LIBRARY_EXISTS(dbus-1 dbus_connection_set_watch_functions "" LWS_HAVE_LIBDBUS)
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if (NOT LWS_HAVE_LIBDBUS)
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message(FATAL_ERROR "Install dbus-devel, or libdbus-1-dev etc")
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endif()
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if (NOT LWS_DBUS_LIB)
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set(LWS_DBUS_LIB "dbus-1")
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endif()
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if (NOT LWS_DBUS_INCLUDE1)
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# look in fedora and debian / ubuntu place
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if (EXISTS "/usr/include/dbus-1.0")
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set(LWS_DBUS_INCLUDE1 "/usr/include/dbus-1.0")
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else()
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message(FATAL_ERROR "Set LWS_DBUS_INCLUDE1 to /usr/include/dbus-1.0 or wherever the main dbus includes are")
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endif()
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endif()
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if (NOT LWS_DBUS_INCLUDE2)
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# look in fedora... debian / ubuntu has the ARCH in the path...
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if (EXISTS "/usr/lib64/dbus-1.0/include")
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set(LWS_DBUS_INCLUDE2 "/usr/lib64/dbus-1.0/include")
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else()
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message(FATAL_ERROR "Set LWS_DBUS_INCLUDE2 to /usr/lib/ARCH-linux-gnu/dbus-1.0/include or wherever dbus-arch-deps.h is on your system")
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endif()
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endif()
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set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES};${LWS_DBUS_INCLUDE1};${LWS_DBUS_INCLUDE2})
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if (NOT LWS_DBUS_INCLUDE1 OR NOT LWS_DBUS_INCLUDE2)
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message(FATAL_ERROR "To build with libdbus, LWS_DBUS_INCLUDE1/2 must be given. See lib/roles/dbus/README.md")
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endif()
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endif()
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# If we are being built as part of lws, confirm current build config supports
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# reqconfig, else skip building ourselves.
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#
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# If we are being built externally, confirm installed lws was configured to
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# support reqconfig, else error out with a helpful message about the problem.
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#
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MACRO(require_lws_config reqconfig _val result)
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if (DEFINED ${reqconfig})
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if (${reqconfig})
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set (rq 1)
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else()
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set (rq 0)
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endif()
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else()
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set(rq 0)
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endif()
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if (${_val} EQUAL ${rq})
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set(SAME 1)
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else()
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set(SAME 0)
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endif()
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if (LWS_WITH_MINIMAL_EXAMPLES AND NOT ${SAME})
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if (${_val})
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message("${SAMP}: skipping as lws being built without ${reqconfig}")
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else()
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message("${SAMP}: skipping as lws built with ${reqconfig}")
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endif()
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set(${result} 0)
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else()
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if (LWS_WITH_MINIMAL_EXAMPLES)
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set(MET ${SAME})
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else()
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CHECK_C_SOURCE_COMPILES("#include <libwebsockets.h>\nint main(void) {\n#if defined(${reqconfig})\n return 0;\n#else\n fail;\n#endif\n return 0;\n}\n" HAS_${reqconfig})
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if (NOT DEFINED HAS_${reqconfig} OR NOT HAS_${reqconfig})
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set(HAS_${reqconfig} 0)
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else()
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set(HAS_${reqconfig} 1)
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endif()
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if ((HAS_${reqconfig} AND ${_val}) OR (NOT HAS_${reqconfig} AND NOT ${_val}))
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set(MET 1)
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else()
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set(MET 0)
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endif()
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endif()
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if (NOT MET)
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if (${_val})
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message(FATAL_ERROR "This project requires lws must have been configured with ${reqconfig}")
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else()
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message(FATAL_ERROR "Lws configuration of ${reqconfig} is incompatible with this project")
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endif()
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endif()
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endif()
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ENDMACRO()
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set(requirements 1)
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require_lws_config(LWS_ROLE_DBUS 1 requirements)
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require_lws_config(LWS_ROLE_WS 1 requirements)
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require_lws_config(LWS_WITHOUT_SERVER 0 requirements)
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require_lws_config(LWS_WITHOUT_CLIENT 0 requirements)
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if (requirements)
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add_executable(${SAMP} ${SRCS})
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include_directories("${LWS_DBUS_INCLUDE1}")
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include_directories("${LWS_DBUS_INCLUDE2}")
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list(APPEND LIB_LIST dbus-1)
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if (websockets_shared)
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target_link_libraries(${SAMP} websockets_shared)
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add_dependencies(${SAMP} websockets_shared ${LWS_DBUS_LIB})
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else()
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target_link_libraries(${SAMP} websockets ${LWS_DBUS_LIB})
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endif()
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endif()
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