else:
env.AppendUnique(CPPDEFINES = ['NDEBUG'])
-env.AppendUnique(CPPDEFINES = ['DTLSV12', 'WITH_SHA256', 'DTLS_CHECK_CONTENTTYPE'])
+env.AppendUnique(CPPDEFINES = ['DTLSV12', 'WITH_SHA256', 'DTLS_CHECK_CONTENTTYPE', 'SHA2_USE_INTTYPES_H'])
libtinydtls = env.StaticLibrary('libtinydtls', env.get('TINYDTLS_SRC'), OBJPREFIX='libtinydtls_')