To activate support for TM in C/C++, the compile-time flag :option:`-fgnu-tm`
must be specified. This enables TM language-level constructs such as
-transaction statements (e.g., ``__transaction_atomic``, see :ref:`c-c++-language-constructs-for-tm` for details).
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+transaction statements (e.g., ``__transaction_atomic``, see :ref:`c-c++-language-constructs-for-tm` for details).