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makeconv - compile a converter table


makeconv [ -h, -?, --help ] [ -c, --copyright ] [ -v, --verbose ] [ -d, --destdir
destination ] convertertable ...


makeconv converts the ICU converter table convertertable into a binary file. The binary
file has the same base name as convertertable but has a .cnv extension (instead of the
typical .ucm extension of the convertertable file). This binary file can then be read
directly by ICU, or used by pkgdata(1) for incorporation into a larger archive or library.

The convertertable must be in the ICU ucm (Unicode Codepage Mapping) format in order to be
understood by makeconv. The ICU ucm format is similar to the IBM NLTC upmap/tpmap/rpmap
files. Comments in the convertable are handled as follows. If a comment (starting with a
`#' sign) that is after some text does contain the fallback indicator `|' then only the
text starting with the `#' sign, and ending before the `|' sign, is ignored. Otherwise,
or if the comment is the first thing on the line, the comment runs up to the end of the
line. This special handling of comments is to accomodate the practice of putting fallback
information in comments in the strict IBM NLTC ucmap format.

Note that new converters will be automatically found by ICU after their installation in
ICU's data directory. They do not need to be listed in the convrtrs.txt(5) converters
aliases file in order to be available to applications using ICU. They do need to be
listed there if one wants to give them aliases, or tags, though.


-h, -?, --help
Print help about usage and exit.

-c, --copyright
Include a copyright notice in the binary data.

-v, --verbose
Display extra informative messages during execution.

-d, --destdir destination
Set the destination directory to destination. The default destination directory is
specified by the environment variable ICU_DATA.


If an existing converter table is changed and recompiled using makeconv, the resulting
binary file must be packaged in the same way that it was packaged initially. For example,
if converters were grouped together in an archive or a library with pkgdata(1), then the
archive or library must be rebuilt with the new binary file. A standalone binary
converter file will not take precedence over a packaged one.


ICU_DATA Specifies the directory containing ICU data. Defaults to
${prefix}/share/icu/55.1/. 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.




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

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