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readme, verilog_parser: bison 3.8 and ubuntu 22.04 example

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Emil J. Tywoniak 2025-07-09 14:34:03 +02:00
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2
README.md
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@ -74,7 +74,7 @@ recommended) and some standard tools such as GNU Flex, GNU Bison, and GNU Make.
TCL, readline and libffi are optional (see ``ENABLE_*`` settings in Makefile).
Xdot (graphviz) is used by the ``show`` command in yosys to display schematics.
For example on Ubuntu Linux 16.04 LTS the following commands will install all
For example on Ubuntu Linux 22.04 LTS the following commands will install all
prerequisites for building yosys:
$ sudo apt-get install build-essential clang lld bison flex \

2
frontends/verilog/verilog_parser.y
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@ -33,7 +33,7 @@
*
*/
%require "3.0"
%require "3.8"
%language "c++"
%define api.value.type variant
%define api.prefix {frontend_verilog_yy}