4.4.1 comp_err — Compile MySQL Error Message File

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 text-format error information in MySQL source distributions:

The error information comes from the messages_to_error_log.txt and messages_to_clients.txt files in the share directory.

For more information about defining error messages, see the comments within those files, along with the errmsg_readme.txt file.

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

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.

• --errmsg-file=file_name, -H file_name

  The name of the error message file. The default is mysqld_errmsg.h.

• --header-file=file_name, -H file_name

  The name of the error header file. The default is mysqld_error.h.

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

  The name of the input file that defines error messages intended to be written to the error log. The default is ../share/messages_to_error_log.txt.

• --in-file-toclient=file_name, -c file_name

  The name of the input file that defines error messages intended to be written to clients. The default is ../share/messages_to_clients.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.

• --version, -V

  Display version information and exit.