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find_package(PkgConfig)

if(PKG_CONFIG_FOUND)
    pkg_check_modules(libsodium libsodium)
endif()

if(NOT libsodium_FOUND)
    find_library(libsodium_LIBRARIES name sodium)
    find_file(libsodium_INCLUDE_DIRS NAMES
        sodium.h
        sodium/core.h
        PATH_SUFFIXES include/ include/sodium)

    if (libsodium_LIBRARIES STREQUAL "libsodium_LIBRARIES-NOTFOUND")
        message(FATAL_ERROR "libsodium not found")
    elseif (libsodium_INCLUDE_DIRS STREQUAL "libsodium_INCLUDE_DIRS-NOTFOUND")
        message(FATAL_ERROR "libsodium headers not found")
    endif()
endif()

message("libsodium_LINK_LIBRARIES=${libsodium_LINK_LIBRARIES}")
message("libsodium_INCLUDE_DIRS=${libsodium_INCLUDE_DIRS}")

if(NOT TARGET libsodium)
    add_library(libsodium INTERFACE IMPORTED)
    set_target_properties(libsodium PROPERTIES
        INTERFACE_INCLUDE_DIRECTORIES ${libsodium_INCLUDE_DIRS}
        INTERFACE_LINK_LIBRARIES ${libsodium_LINK_LIBRARIES})
endif()