cmake_minimum_required(VERSION 3.4.2)
set(CMAKE_USER_MAKE_RULES_OVERRIDE cmake/c_flag_overrides.cmake)

project(stlink C)
set(PROJECT_DESCRIPTION "Open source version of the STMicroelectronics ST-LINK Tools")
include(GNUInstallDirs)
set(STLINK_UDEV_RULES_DIR "${CMAKE_INSTALL_FULL_SYSCONFDIR}/udev/rules.d" CACHE PATH "udev rules directory")
set(STLINK_MODPROBED_DIR "${CMAKE_INSTALL_FULL_SYSCONFDIR}/modprobe.d" CACHE PATH "modprobe.d directory")
set(STLINK_STATIC_LIB ON CACHE BOOL "Install static lib")

set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)

if (IS_DIRECTORY ${LIB_INSTALL_DIR})
    set(LIB_INSTALL_DIR ${LIB_INSTALL_DIR} CACHE PATH "Main library directory")
    set(STLINK_LIBRARY_PATH "${LIB_INSTALL_DIR}")
else ()
    set(LIB_INSTALL_DIR "lib" CACHE PATH "Main library directory")
    set(STLINK_LIBRARY_PATH "${CMAKE_INSTALL_PREFIX}/${LIB_INSTALL_DIR}")
endif ()

if (IS_DIRECTORY ${INCLUDE_INSTALL_DIR})
    set(INCLUDE_INSTALL_DIR ${INCLUDE_INSTALL_DIR} CACHE PATH "Main include directory")
    set(STLINK_INCLUDE_PATH "${INCLUDE_INSTALL_DIR}")
else ()
    set(INCLUDE_INSTALL_DIR "include" CACHE PATH "Main include directory")
    set(STLINK_INCLUDE_PATH "${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}")
endif ()

option(STLINK_GENERATE_MANPAGES "Generate manpages with pandoc" OFF)
option(STLINK_INSTALL_UDEV_RULES "Install udev rules files" ON)
option(STLINK_INSTALL_MODPROBE_CONF "Install modprobe conf files" ON)

# cmake (3.0+) on MacOS should use @rpath
cmake_policy(SET CMP0042 NEW)

set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH};${CMAKE_SOURCE_DIR}/cmake/modules")
include(cmake/version.cmake)
if (NOT MSVC)
    include(cmake/c_flags.cmake)
endif ()


###
# Dependencies
###

find_package(LibUSB REQUIRED)
if (NOT APPLE AND NOT WIN32 AND NOT CMAKE_CROSSCOMPILING)
    find_package(PkgConfig)
    pkg_check_modules(gtk gtk+-3.0)
endif ()

include(CheckIncludeFile)
CHECK_INCLUDE_FILE(sys/mman.h STLINK_HAVE_SYS_MMAN_H)
if (STLINK_HAVE_SYS_MMAN_H)
    add_definitions(-DSTLINK_HAVE_SYS_MMAN_H)
endif ()

CHECK_INCLUDE_FILE(unistd.h STLINK_HAVE_UNISTD_H)
if (STLINK_HAVE_UNISTD_H)
    add_definitions(-DSTLINK_HAVE_UNISTD_H)
endif ()

include(CheckLibraryExists)
CHECK_LIBRARY_EXISTS(ssp __stack_chk_fail "" _stack_chk_fail_exists)

if (_stack_chk_fail_exists)
    set(SSP_LIB ssp)
else ()
    set(SSP_LIB "")
endif ()

if (CMAKE_BUILD_TYPE STREQUAL "")
    set(CMAKE_BUILD_TYPE "Debug")
endif ()

if (${CMAKE_BUILD_TYPE} MATCHES "Debug")
    include(CTest)
endif ()

set(STLINK_HEADERS
    include/stlink.h
    include/stlink/usb.h
    include/stlink/sg.h
    include/stlink/logging.h
    include/stlink/mmap.h
    include/stlink/chipid.h
    include/stlink/flash_loader.h
    )

set(STLINK_SOURCE
    src/chipid.c
    src/common.c
    src/usb.c
    src/sg.c
    src/logging.c
    src/flash_loader.c
    src/md5.c
    )

if (WIN32 OR MSYS OR MINGW)
    set(STLINK_SOURCE "${STLINK_SOURCE};src/mmap.c;src/mingw/mingw.c")
    set(STLINK_HEADERS "${STLINK_HEADERS};src/mingw/mingw.h")
endif ()

include_directories(${LIBUSB_INCLUDE_DIR})
include_directories(include)
include_directories(${PROJECT_BINARY_DIR}/include)
include_directories(src/mingw)
if (MSVC)
    include_directories(src/win32)
    include_directories(src/getopt)
    # Use string.h rather than strings.h and disable annoying warnings
    add_definitions(-DHAVE_STRING_H -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS /wd4710)
endif ()


###
# Shared library
###

if (NOT WIN32)
    set(STLINK_LIB_SHARED ${PROJECT_NAME})
else ()
    set(STLINK_LIB_SHARED ${PROJECT_NAME}-shared)
endif ()

add_library(
    ${STLINK_LIB_SHARED} SHARED
    ${STLINK_HEADERS} # header files for ide projects generated by cmake
    ${STLINK_SOURCE}
    )
target_link_libraries(
    ${STLINK_LIB_SHARED}
    ${LIBUSB_LIBRARY}
    )

set(STLINK_SHARED_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH})

message(STATUS "STLINK_LIB_SHARED: ${STLINK_LIB_SHARED}")
message(STATUS "PROJECT_VERSION_MAJOR: ${PROJECT_VERSION_MAJOR}")
message(STATUS "VERSION: ${STLINK_SHARED_VERSION}")

set_target_properties(
    ${STLINK_LIB_SHARED}
    PROPERTIES SOVERSION ${PROJECT_VERSION_MAJOR}
    VERSION ${STLINK_SHARED_VERSION}
    )

# Link shared library with Apple macOS libraries
if (APPLE)
    find_library(ObjC objc)
    find_library(CoreFoundation CoreFoundation)
    find_library(IOKit IOKit)
    target_link_libraries(${STLINK_LIB_SHARED} ${CoreFoundation} ${IOKit} ${ObjC} ${SSP_LIB})
endif ()

if (WIN32 OR MSYS OR MINGW)
    target_link_libraries(${STLINK_LIB_SHARED} ${LIBUSB_LIBRARY} wsock32 ws2_32 ${SSP_LIB})
else ()
    target_link_libraries(${STLINK_LIB_SHARED} ${LIBUSB_LIBRARY} ${SSP_LIB})
endif ()

install(
    TARGETS ${STLINK_LIB_SHARED}
    DESTINATION ${STLINK_LIBRARY_PATH}
    )


###
# Static library
###

set(STLINK_LIB_STATIC ${PROJECT_NAME}-static)

add_library(
    ${STLINK_LIB_STATIC} STATIC
    ${STLINK_HEADERS} # header files for ide projects generated by cmake
    ${STLINK_SOURCE}
    )

# Link shared library with Apple macOS libraries
if (APPLE)
    find_library(ObjC objc)
    find_library(CoreFoundation CoreFoundation)
    find_library(IOKit IOKit)
    target_link_libraries(${STLINK_LIB_STATIC} ${CoreFoundation} ${IOKit} ${ObjC} ${SSP_LIB})
endif ()

if (WIN32 OR MSYS OR MINGW)
    target_link_libraries(${STLINK_LIB_STATIC} ${LIBUSB_LIBRARY} wsock32 ws2_32 ${SSP_LIB})
else ()
    target_link_libraries(${STLINK_LIB_STATIC} ${LIBUSB_LIBRARY} ${SSP_LIB})
endif ()

set_target_properties(${STLINK_LIB_STATIC} PROPERTIES OUTPUT_NAME ${PROJECT_NAME})

if (STLINK_STATIC_LIB)
    install(TARGETS ${STLINK_LIB_STATIC} ARCHIVE DESTINATION ${STLINK_LIBRARY_PATH})
endif ()


###
# Tools
###

add_executable(st-flash src/tools/flash.c src/tools/flash_opts.c)
if (WIN32 OR APPLE)
    target_link_libraries(st-flash ${STLINK_LIB_STATIC} ${SSP_LIB})
else ()
    target_link_libraries(st-flash ${STLINK_LIB_SHARED} ${SSP_LIB})
endif ()

add_executable(st-info src/tools/info.c)
if (WIN32 OR APPLE)
    target_link_libraries(st-info ${STLINK_LIB_STATIC} ${SSP_LIB})
else ()
    target_link_libraries(st-info ${STLINK_LIB_SHARED} ${SSP_LIB})
endif ()

install(TARGETS st-flash st-info RUNTIME DESTINATION bin)

if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
    if (STLINK_INSTALL_MODPROBE_CONF)
        install(FILES etc/modprobe.d/stlink_v1.conf DESTINATION ${STLINK_MODPROBED_DIR}/)
    endif ()
    if (STLINK_INSTALL_UDEV_RULES)
        file(GLOB RULES_FILES etc/udev/rules.d/*.rules)
        install(FILES ${RULES_FILES} DESTINATION ${STLINK_UDEV_RULES_DIR}/)
    endif ()
endif ()

add_subdirectory(src/gdbserver)
add_subdirectory(src/tools/gui)


###
# Others
###

add_subdirectory(usr/lib/pkgconfig)
add_subdirectory(include)
add_subdirectory(doc/man)
add_subdirectory(tests)

include(cmake/cpack_config.cmake)
include(CPack)


###
# Uninstall target
###

if (NOT TARGET uninstall)
    configure_file(
        "${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
        "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
        IMMEDIATE @ONLY
        )
    add_custom_target(
        uninstall COMMAND ${CMAKE_COMMAND}
        -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
        )
endif ()