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project(lws-minimal-dbus-server)
cmake_minimum_required(VERSION 2.8)
include(CheckCSourceCompiles)
include(CheckLibraryExists)
set(SAMP lws-minimal-dbus-server)
set(SRCS main.c)
if (NOT LWS_WITH_MINIMAL_EXAMPLES)
CHECK_LIBRARY_EXISTS(dbus-1 dbus_connection_set_watch_functions "" LWS_HAVE_LIBDBUS)
if (NOT LWS_HAVE_LIBDBUS)
message(FATAL_ERROR "Install dbus-devel, or libdbus-1-dev etc")
endif()
if (NOT LWS_DBUS_LIB)
set(LWS_DBUS_LIB "dbus-1")
endif()
if (NOT LWS_DBUS_INCLUDE1)
# look in fedora and debian / ubuntu place
if (EXISTS "/usr/include/dbus-1.0")
set(LWS_DBUS_INCLUDE1 "/usr/include/dbus-1.0")
else()
message(FATAL_ERROR "Set LWS_DBUS_INCLUDE1 to /usr/include/dbus-1.0 or wherever the main dbus includes are")
endif()
endif()
if (NOT LWS_DBUS_INCLUDE2)
# look in fedora... debian / ubuntu has the ARCH in the path...
if (EXISTS "/usr/lib64/dbus-1.0/include")
set(LWS_DBUS_INCLUDE2 "/usr/lib64/dbus-1.0/include")
else()
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")
endif()
endif()
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES};${LWS_DBUS_INCLUDE1};${LWS_DBUS_INCLUDE2})
if (NOT LWS_DBUS_INCLUDE1 OR NOT LWS_DBUS_INCLUDE2)
message(FATAL_ERROR "To build with libdbus, LWS_DBUS_INCLUDE1/2 must be given. See lib/roles/dbus/README.md")
endif()
endif()
# If we are being built as part of lws, confirm current build config supports
# reqconfig, else skip building ourselves.
#
# If we are being built externally, confirm installed lws was configured to
# support reqconfig, else error out with a helpful message about the problem.
#
MACRO(require_lws_config reqconfig _val result)
if (DEFINED ${reqconfig})
if (${reqconfig})
set (rq 1)
else()
set (rq 0)
endif()
else()
set(rq 0)
endif()
if (${_val} EQUAL ${rq})
set(SAME 1)
else()
set(SAME 0)
endif()
if (LWS_WITH_MINIMAL_EXAMPLES AND NOT ${SAME})
if (${_val})
message("${SAMP}: skipping as lws being built without ${reqconfig}")
else()
message("${SAMP}: skipping as lws built with ${reqconfig}")
endif()
set(${result} 0)
else()
if (LWS_WITH_MINIMAL_EXAMPLES)
set(MET ${SAME})
else()
CHECK_C_SOURCE_COMPILES("#include <libwebsockets.h>\nint main(void) {\n#if defined(${reqconfig})\n return 0;\n#else\n fail;\n#endif\n return 0;\n}\n" HAS_${reqconfig})
if (NOT DEFINED HAS_${reqconfig} OR NOT HAS_${reqconfig})
set(HAS_${reqconfig} 0)
else()
set(HAS_${reqconfig} 1)
endif()
if ((HAS_${reqconfig} AND ${_val}) OR (NOT HAS_${reqconfig} AND NOT ${_val}))
set(MET 1)
else()
set(MET 0)
endif()
endif()
if (NOT MET)
if (${_val})
message(FATAL_ERROR "This project requires lws must have been configured with ${reqconfig}")
else()
message(FATAL_ERROR "Lws configuration of ${reqconfig} is incompatible with this project")
endif()
endif()
endif()
ENDMACRO()
set(requirements 1)
require_lws_config(LWS_ROLE_DBUS 1 requirements)
require_lws_config(LWS_WITH_SERVER 1 requirements)
if (requirements)
add_executable(${SAMP} ${SRCS})
include_directories("${LWS_DBUS_INCLUDE1}")
include_directories("${LWS_DBUS_INCLUDE2}")
list(APPEND LIB_LIST dbus-1)
if (websockets_shared)
target_link_libraries(${SAMP} websockets_shared)
add_dependencies(${SAMP} websockets_shared ${LWS_DBUS_LIB})
else()
target_link_libraries(${SAMP} websockets ${LWS_DBUS_LIB})
endif()
endif()