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CMakeLists.txt 2.03 KiB
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  • cmake_minimum_required(VERSION 2.8)
    include(CheckCSourceCompiles)
    
    set(SAMP lws-minimal-http-server-form-post-lwsac)
    set(SRCS minimal-http-server-form-post.c)
    
    # 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_H1 1 requirements)
    require_lws_config(LWS_WITHOUT_SERVER 0 requirements)
    
    if (requirements)
    	add_executable(${SAMP} ${SRCS})
    
    	if (websockets_shared)
    		target_link_libraries(${SAMP} websockets_shared)
    		add_dependencies(${SAMP} websockets_shared)
    	else()
    		target_link_libraries(${SAMP} websockets)
    	endif()
    endif()