verilator/docs/guide/deprecations.rst

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.. SPDX-FileCopyrightText: 2003-2026 Wilson Snyder
.. SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
Deprecations
============
The following deprecated items are scheduled for future removal:
C++14 compiler support
Verilator currently requires a C++20 or newer compiler for timing, and a
C++14 or newer compiler for both compiling Verilator and compiling
Verilated models with --no-timing.
Verilator will require C++20 or newer compilers for both compiling
Verilator and compiling all Verilated models no sooner than May 2025.
(Although this date has expired, this change is currently on hold until
the Ubuntu LTS versions of GCC and clang use C++20 by default, estimated
May 2028.)
tcmalloc support
Verilator currently supports the default malloc, tcmalloc, or jemalloc.
As jemalloc has better performance, support for tcmalloc may be removed
no sooner than January 2026.