Linux Certif

Toute la documentation sur la certification Linux LPI

Rechercher une page de manuel

c2hs

NAME

c2hs - C->Haskell Interface Generator

SYNOPSIS

c2hs [ OPTIONS... ] [ header-file ] binding-file

DESCRIPTION

This manual page briefly describes the c2hs command. For more details, refer to the main documentation, which is available in various other formats, including SGML and HTML; see below.

OPTIONS

The programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options are included below. For a complete description, see the other documentation.

c2hs accepts the following options:

-C CPPOPTS, --cppopts=CPPOPTS

pass CPPOPTS to the C preprocessor

-c CPP, --cpp=CPP

use executable CPP to invoke C preprocessor

               --data=DIR

data directory (set by wrapper script)

-d TYPE, --dump=TYPE

dump internal information (for debugging), where TYPE is one of:

• trace

trace compiler phases

• genbind

trace binding generation

• ctrav

trace C declaration traversal

• chs

dump the binding file (adds `.dump' to the name)

-h, -?, --help

brief help

-i INCLUDE, --include=INCLUDE

include paths for .chi files

-k, --keep

keep pre-processed C header

-l, --copy-library

copy `C2HS' library module in

-o FILE, --output=FILE

output result to FILE (should end in .hs)

-p PLATFORM, --platform=PLATFORM

platform to use for cross compilation, where PLATFORM is one of

• i686-pc-linux-gnu

• m68k-palmos

-t PATH, --output-dir=PATH

place generated files in PATH

-v, --version

show version information

header-file is the header file belonging to the marshalled library. It must end with suffix .h.

binding-file is the corresponding Haskell binding file, which must end with suffix .chs.

The most useful of these options is probably --cppopts (or -C). If the C header file needs any special options (like -D or -I) to go through the C pre-processor, here is the place to pass them.

EXAMPLES

The C->Haskell Interface Generator is usually called as:

c2hs lib.h Lib.chs

where lib.h is the header file and Lib.chs the Haskell binding module, which define the C- and Haskell-side interface, respectively. If no errors occur, the result is a pure Haskell module Lib.hs, which implements the Haskell API of the library.

A more advanced call may look like this:

c2hs --cppopts='-I/some/obscure/dir -DEXTRA' lib.h Lib.chs

Often, lib.h will not be in the current directory, but in one of the header file directories. Apart from the current directory, C->Haskell looks in two places for the header: first, in the standard include directory of the used system, this is usually /usr/include and /usr/local/include; and second, it will look in every directory that is mentioned in a -IDIR option passed to the pre-processor via --cppopts.

CAVEATS

Do not forget the quotes if you have more than one option that you want to give to the pre-processor.

SEE ALSO

/usr/share/doc/c2hs-doc/html/c2hs.html

COPYRIGHT

C->Haskell Version 0.14.5 Copyright © 1999 - 2005 Manuel M. T. Chakravarty <chak@cse.unsw.edu.au>

AUTHOR

This manual page was mainly assembled from the original documentation. It was written by Michael Weber <michael.weber@post.rwth-aachen.de> for the Debian GNU/Linux system (but may be used by others).