comp_err - Compile MySQL error message file

comp_err Creates the errmsg.sys file, which is used by mysqld to determine the error messages that need to be displayed for different error codes. After the current MySQL update, error information comes from the messages_to_error_log.txt and messages_to_clients.txt files in the shared directory.

Before MySQL 8.0.19, the error message used to come from the .txt file in the errmsg-utf8 sql/share directory. comp_err also generates the mysqld_error.h, mysqld_ername.h, and mysqld_errmsg.h header files.

comp_err can be called by -

shell> comp_err [options]

It supports the following options -

--charset=dir_name, -C dir_name

It is the character set directory. Default is ../sql/share/charsets.

--debug=debug_options, -# debug_options

It writes to the debug log. A typical debug_options string looks like - d:t:O,file_name. The default is d:t:O,/tmp/comp_err.trace.

--debug-info, -T

Print some debugging information when the program exits.

--errmsg-file=file_name, -H file_name

Error message file name. Defaults to mysqld_errmsg.h. This option was added in MySQL version 8.0.18.

--header-file=file_name, -H file_name

This is the wrong name for the header file. The default is mysqld_error.h.

--in-file-errlog=file_name, -e file_name

This is the name of the input file used to define the error messages to be written to the error log. Default is ../share/messages_to_error_log.txt.

--name-file=file_name, -N file_name

This is the wrong name file. The default is mysqld_ername.h.

--out-dir=dir_name, -D dir_name

is the name of the output base directory. The default is ../sql/share/.

--out-file=file_name, -O file_name

is the name of the output file. The default is errmsg.sys.

--version, -V

Display version information and exit.

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