verilator/docs/guide/deprecations.rst
2023-02-13 22:49:51 -05:00

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.. Copyright 2003-2023 by Wilson Snyder.
.. SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
Deprecations
============
The following deprecated items are scheduled for future removal:
C++11 compiler support
Verilator currently requires a C++20 or newer compiler for timing, and a
C++11 or newer compiler for no-timing.
Verilator will require C++14 or newer compilers for both compiling
Verilator and compiling Verilated models with --no-timing no sooner than
January 2023.
Verilator will require C++20 or newer compilers for both compiling
Verilator and compiling all Verilated models no sooner than January 2025.
Verilated_heavy.h
The legacy "verilated_heavy.h" include was replaced with just including
"verilated.h". Verilated_heavy.h is planned for removal no sooner than
July 2022.
Option `-O<letter>`
The debug `-O<letter>` options have been replaced with
`-fno-<optimization>` debug options to match GCC. The old options are
planned for removal no sooner than June 2023.
Option `--prof-threads`
The `--prof-threads` option has been superseded by the `--prof-exec` and
`--prof-pgo` options and is planned for removal no sooner than April 2023.
Verilated model options `+verilator+prof+threads+*`
The `+verilator+prof+threads+start`, `+verilator+prof+threads+window` and
`+verilator+prof+threads+file` options have been superseded by the
`+verilator+prof+exec+start`, `+verilator+prof+exec+window` and
`+verilator+prof+exec+file` options respectively and are planned for removal
no sooner than April 2023.