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project(rtrlib C)

set(PROJECT_DESCRIPTION "Lightweight C library that implements the RPKI/RTR protocol and prefix origin validation.")

cmake_minimum_required(VERSION 2.6)

set(CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -std=gnu99 -fstack-protector-all")
if(CMAKE_BUILD_TYPE STREQUAL Debug)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -Wall -Wextra -Wformat-security -Winit-self -Wundef -Wwrite-strings")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wformat=2 -Werror=missing-prototypes -Werror=missing-declarations")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wmissing-format-attribute -Werror=implicit-function-declaration")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror=bad-function-cast -Werror=return-type")

    execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion OUTPUT_VARIABLE GCC_VERSION)
    if(GCC_VERSION VERSION_GREATER 4.8 OR GCC_VERSION VERSION_EQUAL 4.8)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wfree-nonheap-object")
    endif()

    if(GCC_VERSION VERSION_GREATER 5.1 OR GCC_VERSION VERSION_EQUAL 5.1)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror=incompatible-pointer-types")
    endif()

    if(GCC_VERSION VERSION_GREATER 8.0 OR GCC_VERSION VERSION_EQUAL 8.0)
        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror=cast-function-type")
    endif()

    set(DOCS_EXCLUDE_PATTERN "")
else()
    set(DOCS_EXCLUDE_PATTERN "*_private.h")
endif(CMAKE_BUILD_TYPE STREQUAL Debug)

include_directories(.)

add_subdirectory(third-party)

find_package(codecov)

find_package(Threads REQUIRED)
if(NOT APPLE AND NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")
    find_library(RT_LIB rt)
endif(NOT APPLE AND NOT ${CMAKE_SYSTEM_NAME} STREQUAL "OpenBSD")

include(GNUInstallDirs) # for man page install path

set(RTRLIB_SRC rtrlib/rtr_mgr.c rtrlib/lib/utils.c rtrlib/lib/alloc_utils.c rtrlib/lib/convert_byte_order.c
    rtrlib/lib/ip.c rtrlib/lib/ipv4.c rtrlib/lib/ipv6.c rtrlib/lib/log.c
    rtrlib/pfx/trie/trie.c rtrlib/pfx/trie/trie-pfx.c rtrlib/transport/transport.c
    rtrlib/transport/tcp/tcp_transport.c rtrlib/rtr/rtr.c rtrlib/rtr/packets.c
    rtrlib/spki/hashtable/ht-spkitable.c ${tommyds})
set(RTRLIB_LINK ${RT_LIB} ${CMAKE_THREAD_LIBS_INIT})

include(FindPkgConfig)

if (NOT DEFINED RTRLIB_TRANSPORT_SSH OR RTRLIB_TRANSPORT_SSH)
    pkg_check_modules(LIBSSH libssh>=0.5.0)

    if(LIBSSH_FOUND)
        # extract version number components
        string(REGEX MATCH "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" RTRLIB_LIBSSH_VERSION_MATCH ${LIBSSH_VERSION})
        if (NOT RTRLIB_LIBSSH_VERSION_MATCH)
            message(FATAL_ERROR "Could not parse libssh version ${LIBSSH_VERSION}")
        endif(NOT RTRLIB_LIBSSH_VERSION_MATCH)
        SET(LIBSSH_VERSION_MAJOR ${CMAKE_MATCH_1})
        SET(LIBSSH_VERSION_MINOR ${CMAKE_MATCH_2})
        SET(LIBSSH_VERSION_PATCH ${CMAKE_MATCH_3})

        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D LIBSSH_VERSION_MAJOR=${LIBSSH_VERSION_MAJOR} -D LIBSSH_VERSION_MINOR=${LIBSSH_VERSION_MINOR}")
        set(RTRLIB_HAVE_LIBSSH 1)
        include_directories(${LIBSSH_INCLUDE_DIRS})
        set(RTRLIB_SRC ${RTRLIB_SRC} rtrlib/transport/ssh/ssh_transport.c)
        set(RTRLIB_LINK ${RTRLIB_LINK} ${LIBSSH_LIBRARIES})
        message(STATUS "libssh found, building librtr with SSH ${LibSSH_VERSION} support")
    elseif(NOT LIBSSH_FOUND AND RTRLIB_TRANSPORT_SSH)
        message(FATAL_ERROR "libssh >= 0.5.0 not found but ssh support was requested. Omit RTRLIB_TRANSPORT_SSH to build without ssh support.")
    else()
        message(WARNING "libssh >= 0.5.0 not found")
    endif(LIBSSH_FOUND)
endif(NOT DEFINED RTRLIB_TRANSPORT_SSH OR RTRLIB_TRANSPORT_SSH)

#doxygen target
find_package(Doxygen)
if(DOXYGEN_FOUND)
    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/doxygen/Doxyfile.in ${CMAKE_CURRENT_BINARY_DIR}/doxygen/Doxyfile @ONLY)

    add_custom_target(doc ALL ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxygen/Doxyfile
        WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
        COMMENT "Generating doxygen API documentation" VERBATIM)
    install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/docs DESTINATION share/doc/rtrlib)
endif(DOXYGEN_FOUND)

add_library(rtrlib SHARED ${RTRLIB_SRC})
add_coverage(rtrlib)
target_link_libraries(rtrlib ${RTRLIB_LINK})
set_target_properties(rtrlib PROPERTIES C_VISIBILITY_PRESET hidden)

add_library(rtrlib_static STATIC ${RTRLIB_SRC})
add_coverage(rtrlib_static)
target_link_libraries(rtrlib_static ${RTRLIB_LINK})

ADD_SUBDIRECTORY(tools)

ADD_SUBDIRECTORY(doxygen/examples)

include(AddTest)
ADD_SUBDIRECTORY(tests)
ENABLE_TESTING()
ADD_TEST(test_pfx tests/test_pfx)
ADD_TEST(test_trie tests/test_trie)
#ADD_TEST(test_pfx_locks tests/test_pfx_locks)

ADD_TEST(test_ht_spkitable tests/test_ht_spkitable)
ADD_TEST(test_ht_spkitable_locks tests/test_ht_spkitable_locks)

ADD_TEST(test_live_validation tests/test_live_validation)

ADD_TEST(test_ipaddr tests/test_ipaddr)

ADD_TEST(test_getbits tests/test_getbits)

ADD_TEST(test_dynamic_groups tests/test_dynamic_groups)

#install lib
set (RTRLIB_VERSION_MAJOR 0)
set (RTRLIB_VERSION_MINOR 8)
set (RTRLIB_VERSION_PATCH 0)
CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/rtrlib/rtrlib.h.cmake ${CMAKE_SOURCE_DIR}/rtrlib/rtrlib.h)
set(LIBRARY_VERSION ${RTRLIB_VERSION_MAJOR}.${RTRLIB_VERSION_MINOR}.${RTRLIB_VERSION_PATCH})
set(LIBRARY_SOVERSION ${RTRLIB_VERSION_MAJOR})
set_target_properties(rtrlib PROPERTIES SOVERSION ${LIBRARY_SOVERSION} VERSION ${LIBRARY_VERSION} OUTPUT_NAME rtr)
install(TARGETS rtrlib LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}/)


# Get lists of all headers
file(GLOB_RECURSE RTRLIB_HEADERS RELATIVE "${PROJECT_SOURCE_DIR}/rtrlib" "rtrlib/*.h")
# Create list of all public headers
foreach(ITEM ${RTRLIB_HEADERS})
    if(NOT ${ITEM} MATCHES ".*_private\\.h" AND NOT ${ITEM} MATCHES ".*tommy.*")
        list(APPEND RTRLIB_PUBLIC_HEADERS ${ITEM})
    endif()
endforeach()

#install includes
foreach(ITEM ${RTRLIB_PUBLIC_HEADERS})
    get_filename_component(HEADER_DIRECTORY "${ITEM}" PATH)
    install(FILES "rtrlib/${ITEM}"
        DESTINATION "include/rtrlib/${HEADER_DIRECTORY}")
endforeach()

#pkgconfig file
if(RTRLIB_TRANSPORT_SSH)
    set (PKG_CONFIG_REQUIRES "libssh >= 0.5.0")
endif(RTRLIB_TRANSPORT_SSH)

# '#include <rtrlib/rtrlib.h>' includes the "rtrlib/"
set (PKG_CONFIG_LIBDIR "\${prefix}/${CMAKE_INSTALL_LIBDIR}")
set (PKG_CONFIG_INCLUDEDIR "\${prefix}/include")
set (PKG_CONFIG_LIBS       "-L\${libdir} -lrtr")
set (PKG_CONFIG_CFLAGS     "-I\${includedir}")

configure_file (
    "${CMAKE_CURRENT_SOURCE_DIR}/cmake/pkg-config.pc.cmake"
    "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
)
install (
    FILES "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
    DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig"
)
#add uninstall target
configure_file(
    "cmake/cmake_uninstall.cmake.in"
    "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
    IMMEDIATE @ONLY)
add_custom_target(uninstall
    COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)

coverage_evaluate()