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cmake_minimum_required(VERSION 3.9)

# Must be set before project, otherwise you cannot choose between gcc and clang
option(ENABLE_FUZZING_TEST "Enable fuzzing test" False)
if(ENABLE_FUZZING_TEST)
	set(CMAKE_C_COMPILER "clang")
	set(CMAKE_CXX_COMPILER "clang++")
endif()

project(marsio)

# option
option(ENABLE_WARNING_AS_ERROR "Enable all optional warnings which are desirable for normal code" TRUE)
option(ENABLE_SANITIZE_ADDRESS "Enable AddressSanitizer" FALSE)
option(ENABLE_SANITIZE_THREAD "Enable ThreadSanitizer" FALSE)
option(ENABLE_VNODE_CHECK_THREAD_SAFE "Enable concurrent write thread-safe check for VNODE." FALSE)
option(ENABLE_PTF_TEST "Enable ptf test." FALSE)

# envirment
message("CMake version: ${CMAKE_VERSION}")
message(STATUS "C Compiler Version: ${CMAKE_C_COMPILER_VERSION}")
message(STATUS "CXX Compiler Version: ${CMAKE_CXX_COMPILER_VERSION}")
message(STATUS "C Standard: ${CMAKE_C_STANDARD}")
message(STATUS "C++ Standard: ${CMAKE_CXX_STANDARD}")

# machine
set(COREI7 "corei7")
set(ICELAKE_SERVER "icelake-server")
set(ZNVER1 "znver1")
set(SUPPORTED_MACHINES ${COREI7} ${ICELAKE_SERVER} ${ZNVER1})
if(NOT MACHINE)
	set(MACHINE "corei7")
endif()
list(FIND SUPPORTED_MACHINES ${MACHINE} INDEX)
if(${INDEX} GREATER -1)
    message(STATUS "current MACHINE is ${MACHINE}.")
else()
    message(FATAL_ERROR "${MACHINE} is not in the support machines list.")
endif()

# FLAGS and define
set(CMAKE_C_FLAGS "-std=gnu99 -m64 -march=${MACHINE} -fPIC -Wall -Wno-format-truncation")
set(CMAKE_CXX_FLAGS "-std=gnu++11 -m64 -march=${MACHINE} -fPIC -Wall -Wno-format-truncation")

# enable LTO
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION True)

# Force -O3 for release and relwithdebinfo
#string(REPLACE "-O2" "-O3" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
#string(REPLACE "-O2" "-O3" CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")

if(ENABLE_WARNING_AS_ERROR)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
endif()

if(ENABLE_SANITIZE_ADDRESS)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lasan")
	set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lasan")
elseif(ENABLE_SANITIZE_THREAD)
	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=thread -fno-omit-frame-pointer")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread -fno-omit-frame-pointer")
	set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lasan")
	set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lasan")
endif()

if(ENABLE_FUZZING_TEST)
	# These options need to be added to the compilation options when building the library under test
	# ref: https://github.com/google/fuzzer-test-suite/blob/master/common.sh
	set(FSANITIZE_FUZZER_FLAGS "-fsanitize=address,fuzzer-no-link")
	set(COVERAGE_FLAGS "-fprofile-instr-generate -fcoverage-mapping")
	set(OTHER_FLAGS "-fPIC -m64 -march=${MACHINE}")
	set(CMAKE_C_FLAGS "${FSANITIZE_FUZZER_FLAGS} ${COVERAGE_FLAGS} ${OTHER_FLAGS}")
    set(CMAKE_CXX_FLAGS "${FSANITIZE_FUZZER_FLAGS} ${COVERAGE_FLAGS} ${OTHER_FLAGS}")
endif()

if(ENABLE_PTF_TEST OR ENABLE_FUZZING_TEST)
	enable_testing()
endif()

if(ENABLE_VNODE_CHECK_THREAD_SAFE)
	add_definitions(-DVNODE_CHECK_THREAD_SAFE)
endif()

add_definitions(-D_GNU_SOURCE -D__STDC_LIMIT_MACROS)
add_definitions(-DALLOW_EXPERIMENTAL_API=1)

# Install Dirs
set(CMAKE_INSTALL_PREFIX /opt/tsg/mrzcpd)
set(MR_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX})
set(MR_INSTALL_LIBDIR ${MACHINE}/lib)
set(MR_INSTALL_BINDIR ${MACHINE}/bin)
set(MR_INSTALL_INCLUDEDIR ${MACHINE}/include)
set(MR_INSTALL_SYSTEM ${MACHINE}/system)

set(MR_ALTERNATIVE_PREFIX ${CMAKE_INSTALL_PREFIX})
set(MR_ALTERNATIVE_LIBDIR ${MR_ALTERNATIVE_PREFIX}/lib)
set(MR_ALTERNATIVE_BINDIR ${MR_ALTERNATIVE_PREFIX}/bin)
set(MR_ALTERNATIVE_INCLUDEDIR ${MR_ALTERNATIVE_PREFIX}/include)

set(MR_INSTALL_LDCONFDIR /etc/ld.so.conf.d/)
set(MR_INSTALL_SYSUNITCONFDIR /etc/sysconfig/)
set(MR_INSTALL_PROFILEDIR /etc/profile.d/)

set(ALTERANTIVES_PRIORITY 300)

if(MACHINE STREQUAL ${COREI7})
    set(ALTERANTIVES_PRIORITY 300)
elseif(MACHINE STREQUAL ${ICELAKE_SERVER})
    set(ALTERANTIVES_PRIORITY 200)
elseif(MACHINE STREQUAL ${ZNVER1})
    set(ALTERANTIVES_PRIORITY 100)
endif() 

exec_program(pkg-config ARGS systemd --variable=systemdsystemunitdir OUTPUT_VARIABLE MR_INSTALL_SYSUNITDIR)

# compile
set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
include(Version)

include_directories(include/external)
include_directories(include/internal)

find_package(PCAP REQUIRED)
link_directories(${PCAP_LIBRARY_DIR})
include_directories(${PCAP_INCLUDE_DIR})

add_subdirectory(${CMAKE_SOURCE_DIR}/support)
add_subdirectory(${CMAKE_SOURCE_DIR}/include)
add_subdirectory(${CMAKE_SOURCE_DIR}/infra)
add_subdirectory(${CMAKE_SOURCE_DIR}/service)
add_subdirectory(${CMAKE_SOURCE_DIR}/app)
add_subdirectory(${CMAKE_SOURCE_DIR}/pag)
#add_subdirectory(${CMAKE_SOURCE_DIR}/tunnat)
add_subdirectory(${CMAKE_SOURCE_DIR}/examples)
add_subdirectory(${CMAKE_SOURCE_DIR}/tools)
add_subdirectory(${CMAKE_SOURCE_DIR}/conf)
add_subdirectory(${CMAKE_SOURCE_DIR}/test)

add_custom_target("install-program" COMMAND ${CMAKE_COMMAND} ARGS -DCOMPONENT=Program -P cmake_install.cmake)
add_custom_target("install-profile" COMMAND ${CMAKE_COMMAND} ARGS -DCOMPONENT=Profile -P cmake_install.cmake)

message(STATUS "Packet I/O Middleware based on DPDK(Marsio), Version: ${MARSIO_VERSION}")

# package
include(InstallDPDK)
include(Package)