Reference

greencard-nhc98(1)

Haskell C-Interface Preprocessor

NAME

GreenCard-nhc98 - Haskell C-Interface Preprocessor

SYNOPSIS

greencard-nhc98 [options] filename

DESCRIPTION

greencard-nhc98 is a preprocessor for Haskell which allows Haskell functions to call C. (Incidentally, nhc98 also has the ability to call Haskell code from C using GreenCard to set up the interface.) Greencard is generally called automatically by nhc98 when it is given a file with the extension ".gc".

GreenCard-nhc98 will read from standard input if no filename is given.

OPTIONS

-t, --target TARGET

Generate code for a particular Haskell compiler.

--version

Prints the version number, then exit successfully.

-h, --help

Print a usage message listing all available options.

-v, --verbose

Print more information while processing the input.

-d, --debug

Print even more information while processing the input.

-i DIRS, -PDIRS, --include-dir DIRS

Search the directories named in the colon (':') separated list for imported files. The directories will be searched in a left-to-right order, after the current directory.

-g, --fgc-safe

Generates code that can use callbacks to Haskell. This makes the generated code slower.

SEE ALSO

hmake(1), nhc98(1)

AUTHORS

Based on text by Thomas Nordin, Simon Peyton Jones, Alastair Reid, and Malcolm Wallace.