CMakeLists.txt

############################################################################
# Copyright (c) 2019, Sylvain Corlay, Johan Mabille, Wolf Vollprecht       #
# Copyright (c) 2019, QuantStack                                           #
#                                                                          #
# Distributed under the terms of the BSD 3-Clause License.                 #
#                                                                          #
# The full license is in the file LICENSE, distributed with this software. #
############################################################################

cmake_minimum_required(VERSION 3.4.3)
project(xeus-calc)

set(XEUS_CALC_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)

# Versionning
# ===========

file(STRINGS "${XEUS_CALC_INCLUDE_DIR}/xeus-calc/xeus_calc_config.hpp" xcalc_version_defines
     REGEX "#define XCALC_VERSION_(MAJOR|MINOR|PATCH)")
foreach(ver ${xcalc_version_defines})
    if(ver MATCHES "#define XCALC_VERSION_(MAJOR|MINOR|PATCH) +([^ ]+)$")
        set(XCALC_VERSION_${CMAKE_MATCH_1} "${CMAKE_MATCH_2}" CACHE INTERNAL "")
    endif()
endforeach()
set(${PROJECT_NAME}_VERSION
${XCALC_VERSION_MAJOR}.${XPYT_VERSION_MINOR}.${XPYT_VERSION_PATCH})
message(STATUS "Building xeus-calc v${${PROJECT_NAME}_VERSION}")

# Configuration
# =============

include(GNUInstallDirs)

# We generate the kernel.json file, given the installation prefix and the executable name
configure_file (
    "${CMAKE_CURRENT_SOURCE_DIR}/share/jupyter/kernels/xcalc/kernel.json.in"
    "${CMAKE_CURRENT_SOURCE_DIR}/share/jupyter/kernels/xcalc/kernel.json"
)

# Dependencies
# ============

# Be sure to use recent versions
set(xeus-zmq_REQUIRED_VERSION 3.0.0)
set(cppzmq_REQUIRED_VERSION 4.3.0)

find_package(xeus-zmq ${xeus-zmq_REQUIRED_VERSION} REQUIRED)
find_package(cppzmq ${cppzmq_REQUIRED_VERSION} REQUIRED)

# Flags
# =====

include(CheckCXXCompilerFlag)

set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)

#if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Intel")
#    CHECK_CXX_COMPILER_FLAG("-std=c++14" HAS_CPP14_FLAG)
#
#   if (HAS_CPP14_FLAG)
#       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
#   else()
#       message(FATAL_ERROR "Unsupported compiler -- xeus requires C++14 support!")
#    endif()
#endif()
#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")

# Target and link
# ===============

# xeus-calc source directory
set(XEUS_CALC_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)

# xeus-calc source files
set(XEUS_CALC_SRC
    ${XEUS_CALC_SRC_DIR}/xeus_calc_interpreter.cpp
)

set(XEUS_CALC_HEADERS
    include/xeus-calc/xeus_calc_interpreter.hpp
    include/xeus-calc/xeus_calc_config.hpp
)

# xeus-calc is the target for the library
add_library(xeus-calc SHARED ${XEUS_CALC_SRC} ${XEUS_CALC_HEADERS})
target_compile_features(xeus-calc PRIVATE cxx_std_17)

# xcalc is the target for the kernel executable
add_executable(xcalc src/main.cpp)
target_compile_features(xcalc PRIVATE cxx_std_17)
set_target_properties(xcalc PROPERTIES ENABLE_EXPORTS 1)
target_link_libraries(xcalc PRIVATE xeus-calc)
target_compile_definitions(xcalc PRIVATE XEUS_CALC_HOME="${XCALC_PREFIX}")

if (APPLE)
    set_target_properties(xcalc PROPERTIES
        MACOSX_RPATH ON
    )
else()
    set_target_properties(xcalc PROPERTIES
        BUILD_WITH_INSTALL_RPATH 1
        SKIP_BUILD_RPATH FALSE
    )
endif()


set_target_properties(xcalc xeus-calc PROPERTIES
    INSTALL_RPATH_USE_LINK_PATH TRUE
)

OPTION(DOWNLOAD_GTEST "build gtest from downloaded sources" OFF)

#Option for GTest
if(DOWNLOAD_GTEST OR GTEST_SRC_DIR)
    set(BUILD_TESTS ON)
endif()

target_link_libraries(xeus-calc PUBLIC xeus-zmq)


set_target_properties(xcalc PROPERTIES
    INSTALL_RPATH_USE_LINK_PATH TRUE
)

target_include_directories(xeus-calc
                           PUBLIC
                           ${XCALC_INCLUDE_DIRS}
                           $<BUILD_INTERFACE:${XEUS_CALC_INCLUDE_DIR}>
                           $<INSTALL_INTERFACE:include>)

set_target_properties(xeus-calc PROPERTIES
                      PUBLIC_HEADER "${XEUS_CALC_HEADERS}"
                      COMPILE_DEFINITIONS "XEUS_CALC_EXPORTS"
                      PREFIX ""
                      VERSION ${${PROJECT_NAME}_VERSION}
                      SOVERSION ${XCALC_VERSION_MAJOR}
OUTPUT_NAME "libxeus-calc")


## Test ##
# take into account the CMakeList in test

OPTION(BUILD_TESTS "xeus-calc test suite" OFF)
OPTION(DOWNLOAD_GTEST "build gtest from downloaded sources" OFF)

if(DOWNLOAD_GTEST OR GTEST_SRC_DIR)
    set(BUILD_TESTS ON)
endif()


if(BUILD_TESTS)
    add_subdirectory(test)
endif()

# Installation
# ============

# Install xeus-calc and xcalc
install(TARGETS xeus-calc
        EXPORT ${PROJECT_NAME}-targets
        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
        PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/xeus-calc)

install(TARGETS xcalc
        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})

# Configuration and data directories for jupyter and xeus_calc
set(XJUPYTER_DATA_DIR "share/jupyter" CACHE STRING "Jupyter data directory")

# Install Jupyter kernelspecs
set(XEUS_CALCSPEC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/share/jupyter/kernels)
install(DIRECTORY ${XEUS_CALCSPEC_DIR}
        DESTINATION ${XJUPYTER_DATA_DIR}
        PATTERN "*.in" EXCLUDE)


# Extra path for installing Jupyter kernelspec
if (XEXTRA_JUPYTER_DATA_DIR)
    install(DIRECTORY ${XEUS_CALCSPEC_DIR}
            DESTINATION ${XEXTRA_JUPYTER_DATA_DIR}
            PATTERN "*.in" EXCLUDE)
endif(XEXTRA_JUPYTER_DATA_DIR)