GENCMN(8) ICU 78.3 Manual GENCMN(8)

# [NAME](#NAME)

**gencmn** - generate an ICU memory-mappable data file

# [SYNOPSIS](#SYNOPSIS)

**gencmn** \[ **-h, -?, --help** **]** **\[** **-v, --verbose** **]** **\[** **-c, --copyright** **|** **-C, --comment **comment**** **]** **\[** **-d, --destdir **destination**** **]** **\[** **-n, --name **name**** **]** **\[** **-t, --type **fileext**** **]** **\[** **-S, --source** **]** **\[** **-e, --entrypoint **name**** **]** *maxsize* \[ *listfilename* ]

# [DESCRIPTION](#DESCRIPTION)

**gencmn** takes a set of files and packages them as an ICU memory-mappable data file. The resulting data file can then be used directly by ICU.

**gencmn** reads a list of files to be packaged from either the supplied *listfilename* file, or from its standard output. It packages all the files from the list that are not bigger than *maxsize* bytes, except if *maxsize* is 0, which indicates that there is no size limit on files.

# [OPTIONS](#OPTIONS)

[**-h, -?, --help**](#h)

Print help about usage and exit.

[**-v, --verbose**](#v)

Display extra informative messages during execution.

[**-c,--copyright**](#c)

Include the ICU copyright notice in the resulting data.

[**-C, --comment **comment****](#C)

Include the specified *comment* in the resulting data instead of the ICU copyright notice.

[**-d, --destdir **destination****](#d)

Set the destination directory to *destination*. The default destination directory is specified by the environment variable **ICU\_DATA**.

[**-n, --name **name****](#n)

Set the data name to *name* instead of the default. This name is also used as the base name of the output. The default name is made of the *icudt* prefix, followed by a two-digit version number corresponding to the current version of the ICU release, and a single letter indicating the endianness of the data (the letter *b* indicated big endian data, and the letter *l* indicates little endian ones).

[**-t, --type **type****](#t)

Use *type* as the type of the data. This type is also used as the extension of the generated data file. The default type ie *dat*.

[**-S, --source**](#S)

Write a C source file with the table of contents of the data.

[**-e, --entrypoint **name****](#e)

Set the data entry point (used for linking against the data in a shared library form) to *name*. The default entry point name is made of the data (set by the **-n, --name** **option) followed by an underscore and the type of the data (set by the** **-t, --type** **option).**

# [ENVIRONMENT](#ENVIRONMENT)

[**ICU\_DATA**](#ICU_DATA)

Specifies the directory containing ICU data. Defaults to **${prefix}/share/icu/78.3/**. Some tools in ICU depend on the presence of the trailing slash. It is thus important to make sure that it is present if **ICU\_DATA** is set.

# [VERSION](#VERSION)

78.3

# [COPYRIGHT](#COPYRIGHT)

Copyright (C) 2000-2001 IBM, Inc. and others.

# [SEE ALSO](#SEE_ALSO)

[**decmn**(8)](/man/os/icu/decmn.8)

5 November 2001 ICU MANPAGE

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Document: gencmn(8) from icu 78.3-r4 (Chainguard OS)
Source: https://github.com/unicode-org/icu