option(USE_STATIC_MBEDTLS_LIBRARY "Build mbed TLS static library." ON)
option(USE_SHARED_MBEDTLS_LIBRARY "Build mbed TLS shared library." OFF)
option(LINK_WITH_PTHREAD "Explicitly link mbed TLS library to pthread." OFF)
option(LINK_WITH_TRUSTED_STORAGE "Explicitly link mbed TLS library to trusted_storage." OFF)

# Set the project root directory if it's not already defined, as may happen if
# the library folder is included directly by a parent project, without
# including the top level CMakeLists.txt.
if(NOT DEFINED MBEDTLS_DIR)
    set(MBEDTLS_DIR ${CMAKE_SOURCE_DIR})
endif()

set(src_crypto
    aes.c
    aesni.c
    arc4.c
    aria.c
    asn1parse.c
    asn1write.c
    base64.c
    bignum.c
    blowfish.c
    camellia.c
    ccm.c
    chacha20.c
    chachapoly.c
    cipher.c
    cipher_wrap.c
    cmac.c
    ctr_drbg.c
    des.c
    dhm.c
    ecdh.c
    ecdsa.c
    ecjpake.c
    ecp.c
    ecp_curves.c
    entropy.c
    entropy_poll.c
    gcm.c
    havege.c
    hkdf.c
    hmac_drbg.c
    md.c
    md2.c
    md4.c
    md5.c
    md_wrap.c
    memory_buffer_alloc.c
    nist_kw.c
    oid.c
    padlock.c
    pem.c
    pk.c
    pk_wrap.c
    pkcs12.c
    pkcs5.c
    pkparse.c
    pkwrite.c
    platform.c
    platform_util.c
    poly1305.c
    psa_crypto.c
    psa_crypto_se.c
    psa_crypto_slot_management.c
    psa_crypto_storage.c
    psa_its_file.c
    ripemd160.c
    rsa.c
    rsa_internal.c
    sha1.c
    sha256.c
    sha512.c
    threading.c
    timing.c
    xtea.c
    ${src_thirdparty}
)

# For files generated by the parent project (Mbed TLS) when building Mbed
# Crypto as a submodule, ensure that the parent project instance is used.
if(USE_CRYPTO_SUBMODULE)
set(src_crypto
    ${src_crypto}
    ${MBEDTLS_DIR}/library/version.c
    ${MBEDTLS_DIR}/library/version_features.c
    ${MBEDTLS_DIR}/library/error.c
)
else()
set(src_crypto
    ${src_crypto}
    version.c
    version_features.c
    error.c
)
endif()

if(CMAKE_COMPILER_IS_GNUCC)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wmissing-declarations -Wmissing-prototypes")
endif(CMAKE_COMPILER_IS_GNUCC)

if(CMAKE_COMPILER_IS_CLANG)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wmissing-declarations -Wmissing-prototypes -Wdocumentation -Wno-documentation-deprecated-sync -Wunreachable-code")
endif(CMAKE_COMPILER_IS_CLANG)

if(UNSAFE_BUILD)
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-error")
    set(CMAKE_C_FLAGS_ASAN "${CMAKE_C_FLAGS_ASAN} -Wno-error")
    set(CMAKE_C_FLAGS_ASANDBG "${CMAKE_C_FLAGS_ASANDBG} -Wno-error")
endif(UNSAFE_BUILD)

if(WIN32)
    set(libs ${libs} ws2_32)
endif(WIN32)

if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
    SET(CMAKE_C_ARCHIVE_CREATE   "<CMAKE_AR> Scr <TARGET> <LINK_FLAGS> <OBJECTS>")
    SET(CMAKE_CXX_ARCHIVE_CREATE "<CMAKE_AR> Scr <TARGET> <LINK_FLAGS> <OBJECTS>")
    SET(CMAKE_C_ARCHIVE_FINISH   "<CMAKE_RANLIB> -no_warning_for_no_symbols -c <TARGET>")
    SET(CMAKE_CXX_ARCHIVE_FINISH "<CMAKE_RANLIB> -no_warning_for_no_symbols -c <TARGET>")
endif()

if(HAIKU)
    set(libs ${libs} network)
endif(HAIKU)

if(LINK_WITH_PTHREAD)
    set(libs ${libs} pthread)
endif()

if(LINK_WITH_TRUSTED_STORAGE)
    set(libs ${libs} trusted_storage)
endif()

if (NOT USE_STATIC_MBEDTLS_LIBRARY AND NOT USE_SHARED_MBEDTLS_LIBRARY)
    message(FATAL_ERROR "Need to choose static or shared mbedtls build!")
endif(NOT USE_STATIC_MBEDTLS_LIBRARY AND NOT USE_SHARED_MBEDTLS_LIBRARY)

if(USE_STATIC_MBEDTLS_LIBRARY AND USE_SHARED_MBEDTLS_LIBRARY)
    set(mbedcrypto_static_target "mbedcrypto_static")
elseif(USE_STATIC_MBEDTLS_LIBRARY)
    set(mbedcrypto_static_target "mbedcrypto")
endif()

if(USE_STATIC_MBEDTLS_LIBRARY)
    add_library(${mbedcrypto_static_target} STATIC ${src_crypto})
    set_target_properties(${mbedcrypto_static_target} PROPERTIES OUTPUT_NAME mbedcrypto)
    target_link_libraries(${mbedcrypto_static_target} ${libs})
    target_include_directories(${mbedcrypto_static_target}
        PUBLIC ${MBEDTLS_DIR}/include/
        PUBLIC ${MBEDTLS_DIR}/crypto/include/)

    install(TARGETS ${mbedcrypto_static_target}
            DESTINATION ${LIB_INSTALL_DIR}
            PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
endif(USE_STATIC_MBEDTLS_LIBRARY)

if(USE_SHARED_MBEDTLS_LIBRARY)
    add_library(mbedcrypto SHARED ${src_crypto})
    set_target_properties(mbedcrypto PROPERTIES VERSION 2.17.0 SOVERSION 3)
    target_link_libraries(mbedcrypto ${libs})
    target_include_directories(mbedcrypto
        PUBLIC ${MBEDTLS_DIR}/include/
        PUBLIC ${MBEDTLS_DIR}/crypto/include/)

    install(TARGETS mbedcrypto
            DESTINATION ${LIB_INSTALL_DIR}
            PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
endif(USE_SHARED_MBEDTLS_LIBRARY)

if(USE_CRYPTO_SUBMODULE)
    add_custom_target(crypto_lib DEPENDS mbedcrypto)
    if(USE_STATIC_MBEDTLS_LIBRARY AND USE_SHARED_MBEDTLS_LIBRARY)
        add_dependencies(crypto_lib mbedcrypto_static)
    endif()
else()
    add_custom_target(lib DEPENDS mbedcrypto)
    if(USE_STATIC_MBEDTLS_LIBRARY AND USE_SHARED_MBEDTLS_LIBRARY)
        add_dependencies(lib mbedcrypto_static)
    endif()
endif()