#
# ASIO
#

set(ASIO_FOUND FALSE)

find_package(Threads REQUIRED)

set(ASIO_INSTALL_DIR "" CACHE STRING "ASIO install dir")
set(ASIO_INSTALL_DIR_INTERNAL "" CACHE STRING "ASIO install dir")
if(NOT "${ASIO_INSTALL_DIR}" STREQUAL "${ASIO_INSTALL_DIR_INTERNAL}") # ASIO_INSTALL_DIR is given in command-line
    unset(ASIO_INCLUDE_DIR CACHE)
    find_path(ASIO_DIR asio.hpp HINTS ${ASIO_INSTALL_DIR} PATH_SUFFIXES include)
else() # in system path
    find_path(ASIO_DIR asio.hpp PATH_SUFFIXES include)
endif()



if (NOT ASIO_DIR)
    message(WARNING "Cannot find ASIO library headers!")
    set(ASIO_FOUND FALSE)
else()
    message(STATUS "Found ASIO: (${ASIO_DIR})")

    # ASIO is header-only library so it is IMPORTED target
    add_library(ASIO::ASIO INTERFACE IMPORTED GLOBAL)

    # set standalone version (do not use Boost)
    set_target_properties(ASIO::ASIO PROPERTIES INTERFACE_COMPILE_DEFINITIONS "ASIO_STANDALONE" INTERFACE_INCLUDE_DIRECTORIES "${ASIO_DIR}")

    target_link_libraries(ASIO::ASIO INTERFACE Threads::Threads)
    set(ASIO_FOUND TRUE)

endif()