44 lines
2.0 KiB
Plaintext
44 lines
2.0 KiB
Plaintext
This directory contains the GNU front-end for the Chill language,
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contributed by Cygnus Solutions.
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Chill is the "CCITT High-Level Language", where CCITT is the old
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name for what is now ITU, the International Telecommunications Union.
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It is is language in the Modula2 family, and targets many of the
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same applications as Ada (especially large embedded systems).
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Chill was never used much in the United States, but is still
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being used in Europe, Brazil, Korea, and other places.
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Chill has been standardized by a series of reports/standards.
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The GNU implementation mostly follows the 1988 version of
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the language, with some backwards compatibility options for
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the 1984 version, and some other extensions. However, it
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does not implement all of the features of any standard.
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The most recent standard is Z.200 (11/93), available from
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http://www.itu.int/itudoc/itu-t/rec/z.html.
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The GNU Chill implementation is not being actively developed.
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Cygnus has one customer we are maintaining Chill for,
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but we are not planning on putting major work into Chill.
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This Net release is for educational purposes (as an example
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of a different Gcc front-end), and for those who find it useful.
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It is an unsupported hacker release. Bug reports without
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patches are likely to get ignored. Questions may get answered or
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ignored depending on our mood! If you want to try your luck,
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you can send a note to David Brolley <brolley@cygnus.com> or
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Per Bothner <bothner@cygnus.com>.
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One known problem is that we only support native builds of GNU Chill.
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If you need a cross-compiler, you will find various problems,
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including the directory structure, and the setjmp-based exception
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handling mechanism.
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The Chill run-time system is in the runtime sub-directory.
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Notice rts.c contains a poor main's implementation of Chill
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"processes" (threads). It is not added to libchill.a.
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We only use it for testing. (Our customer uses a different
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implementation for production work.)
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The GNU Chill implementation was primarily written by
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Per Bothner, along with Bill Cox, Wilfried Moser, Michael
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Tiemann, and David Brolley.
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