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COMP_ERR(1) MySQL Database System COMP_ERR(1)

comp_err - compile MySQL error message file

comp_err [options]

comp_err creates the errmsg.sys file that is used by mysqld to determine the error messages to display for different error codes. comp_err normally is run automatically when MySQL is built. It compiles the errmsg.sys file from the text-format error information file located at sql/share/errmsg-utf8.txt in MySQL source distributions.

comp_err also generates the mysqld_error.h, mysqld_ername.h, and sql_state.h header files.

For more information about how error messages are defined, see the MySQL Internals Manual[1].

Invoke comp_err like this:

comp_err [options]

comp_err supports the following options.

--help, -? Display a help message and exit.

--charset=dir_name, -C dir_name The character set directory. The default is ../sql/share/charsets.

--debug=debug_options, -# debug_options Write a debugging log. A typical debug_options string is 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.

--header-file=file_name, -H file_name The name of the error header file. The default is mysqld_error.h.

--in-file=file_name, -F file_name The name of the input file that defines error messages. The default is ../sql/share/errmsg-utf8.txt.

--name-file=file_name, -N file_name The name of the error name file. The default is mysqld_ername.h.

--out-dir=dir_name, -D dir_name The name of the output base directory. The default is ../sql/share/.

--out-file=file_name, -O file_name The name of the output file. The default is errmsg.sys.

--state-file=file_name, -S file_name The name for the SQLSTATE header file. The default is sql_state.h.

--version, -V Display version information and exit.

Copyright © 1997, 2021, Oracle and/or its affiliates.

This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License.

This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see

MySQL Internals Manual

For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at

Oracle Corporation (
09/06/2021 MySQL 5.7

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