cmake_minimum_required(VERSION 3.15.4...3.22)
set(CMAKE_DISABLE_SOURCE_CHANGES ON)
set(CMAKE_DISABLE_IN_SOURCE_BUILD ON)
project(derecho CXX)

# Version
set(derecho_VERSION 2.4)
set(derecho_build_VERSION 2.4.1)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -DDERECHO_DEBUG -O0 -Wall -ggdb -gdwarf-3")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Wall")
set(CMAKE_CXX_FLAGS_BENCHMARK "${CMAKE_CXX_FLAGS_RELEASE} -Wall -DNOLOG -Ofast -march=native")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -Wall -ggdb -gdwarf-3")

set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/Modules")

include(GNUInstallDirs)

# Prevent "make install" from automatically calling "make all", since the "all" target includes
# all the applications and they are not part of the library we want to install with "make install"
set(CMAKE_SKIP_INSTALL_ALL_DEPENDENCY true)

include(GetGitRevisionDescription)

# These packages export their location information in the "old" way,
# with INCLUDE_DIRS and LIBRARIES variables

# libfabric_FOUND
# libfabric_INCLUDE_DIRS
# libfabric_LIBRARIES
find_package(libfabric 1.12.1 REQUIRED)
if(${libfabric_FOUND})
    include_directories(${libfabric_INCLUDE_DIRS})
else()
    message(FATAL_ERROR "Required library LibFabric not found")
endif()

# These packages export their location information in the "new" way,
# by providing an IMPORT-type CMake target that you can use as a
# dependency. Placing this target in target_link_libraries will
# automatically ensure its headers are included.

# Target: mutils::mutils
find_package(mutils REQUIRED)

# Target: mutils::mutils-containers
find_package(mutils-containers REQUIRED)

# Target: spdlog::spdlog
find_package(spdlog 1.12.0 REQUIRED)

# Target: OpenSSL::Crypto and OpenSSL::ssl
find_package(OpenSSL 1.1.1 REQUIRED)

# Target: nlohmann_json::nlohmann_json
find_package(nlohmann_json 3.9.0 REQUIRED)

# Target: Doxygen
find_package(Doxygen)


# Source code configurations go to config.h
# Shift to verbs API. We use libfabric by default.
if (${USE_VERBS_API})
set(USE_VERBS_API 1)
else()
set(USE_VERBS_API 0)
endif()
# Enable High memory registration (for device memory like GPU memory.)
# Important: this does not work with libfabric provider like tcp and socket because they cannot
# RDMA to device memory.
if (${ENABLE_HMEM})
set(ENABLE_HMEM 1)
else()
set(ENABLE_HMEM 0)
endif()
CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/include/derecho/config.h)
include_directories(${CMAKE_CURRENT_BINARY_DIR}/include)

add_subdirectory(src/mutils-serialization)
add_subdirectory(src/conf)
add_subdirectory(src/utils)
add_subdirectory(src/core)
add_subdirectory(src/rdmc)
add_subdirectory(src/sst)
add_subdirectory(src/tcp)
add_subdirectory(src/persistent)
add_subdirectory(src/openssl)

# make libderecho.so
add_library(derecho SHARED
    $<TARGET_OBJECTS:mutils-serialization>
    $<TARGET_OBJECTS:conf>
    $<TARGET_OBJECTS:utils>
    $<TARGET_OBJECTS:core>
    $<TARGET_OBJECTS:rdmc>
    $<TARGET_OBJECTS:sst>
    $<TARGET_OBJECTS:tcp>
    $<TARGET_OBJECTS:persistent>
    $<TARGET_OBJECTS:openssl_wrapper>)
if (${USE_VERBS_API})
target_link_libraries(derecho
    rdmacm ibverbs rt pthread atomic stdc++fs
    spdlog::spdlog
    ${libfabric_LIBRARIES}
    mutils::mutils
    mutils::mutils-containers
    OpenSSL::Crypto
    nlohmann_json::nlohmann_json)
else()
target_link_libraries(derecho
    rt pthread atomic stdc++fs
    spdlog::spdlog
    ${libfabric_LIBRARIES}
    mutils::mutils
    mutils::mutils-containers
    OpenSSL::Crypto
    nlohmann_json::nlohmann_json)
endif()
set_target_properties(derecho PROPERTIES
    SOVERSION ${derecho_VERSION}
    VERSION ${derecho_build_VERSION}
)
add_dependencies(derecho
    mutils-serialization conf utils core
    rdmc sst tcp persistent openssl_wrapper)

# Setup for make install
# Declare that we will install the targets built by "derecho"
install(TARGETS derecho EXPORT derechoTargets
        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
        INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
# Declare that we will install the "include/" directory as a standard include directory
install(DIRECTORY
        ${CMAKE_CURRENT_SOURCE_DIR}/include/derecho
        ${CMAKE_CURRENT_BINARY_DIR}/include/derecho
        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})

# Use CMakePackageConfigHelpers to create a package version file and config file
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
    "${CMAKE_CURRENT_BINARY_DIR}/cmake/derechoConfigVersion.cmake"
    VERSION ${derecho_VERSION}
    COMPATIBILITY AnyNewerVersion
)

# The directory where all the derecho*.cmake files will be installed
# The standard is <libDir>/cmake/<packageName>
set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/derecho)

configure_package_config_file(derechoConfig.cmake
    "${CMAKE_CURRENT_BINARY_DIR}/cmake/derechoConfig.cmake"
    INSTALL_DESTINATION ${ConfigPackageLocation}
    PATH_VARS CMAKE_INSTALL_LIBDIR CMAKE_INSTALL_INCLUDEDIR
)

# Create a CMake targets file for Derecho so it can be imported as a CMake package
install(EXPORT derechoTargets
    FILE derechoTargets.cmake
    NAMESPACE derecho::
    DESTINATION ${ConfigPackageLocation}
)

# Declare that we will install the cmake files that CmakePackageConfigHelpers just created
install(FILES
    "${CMAKE_CURRENT_BINARY_DIR}/cmake/derechoConfig.cmake"
    "${CMAKE_CURRENT_BINARY_DIR}/cmake/derechoConfigVersion.cmake"
    DESTINATION ${ConfigPackageLocation}
)

# Build applications
add_subdirectory(src/applications)

set (DOXYGEN_EXCLUDE src/applications include/derecho/conf/getpot src/mutils-serialization include/derecho/rdmc src/core/rdmc)
set (DOXYGEN_PROJECT_NUMBER  ${derecho_VERSION})
set (DOXYGEN_TAB_SIZE 4)
set (DOXYGEN_WARNINGS NO)
set (DOXYGEN_WARN_IF_UNDOCUMENTED NO)
set (DOXYGEN_WARN_NO_PARAMDOC NO)
if (DOXYGEN_FOUND)
    # create docs
    doxygen_add_docs(docs
        ${CMAKE_SOURCE_DIR}/README.md
        ${CMAKE_SOURCE_DIR}/include
        ${CMAKE_SOURCE_DIR}/src
        ALL
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    )
endif()