#!/bin/sh -

# OCaml-specific "find-provides" for RPM.

# By Richard W.M. Jones <rjones@redhat.com>

# $Id: ocaml-find-provides.sh,v 1.7 2007/06/11 15:03:17 rjones Exp $

#set -x

# Usage:

#   (1) Add the following to the spec file:

#   %define _use_internal_dependency_generator 0

#   %define __find_requires /usr/lib/rpm/ocaml-find-requires.sh

#   %define __find_provides /usr/lib/rpm/ocaml-find-provides.sh

#

#   (2) If you don't want the module to depend on the exact compiler

#   version then use ocaml-find-requires.sh -c, but this is not something

#   you should do normally.

#

#   (3) For any modules which you want to ignore, use '-i Modulename'.

OCAMLOBJINFO=ocamlobjinfo

TEMP=`getopt -o i:f: -n ocaml-find-provides.sh -- "$@"`

if [ $? != 0 ]; then echo "ocaml-find-provides.sh: failed" >&2; exit 1; fi

eval set -- "$TEMP"

ignore_modules=nOTREAL

while true; do

    case "$1" in

	-i) ignore_modules="$2 $ignore_modules"; shift 2;;

	-f) OCAMLOBJINFO="$2"; shift 2;;

	--) shift; break;;

	*) echo "ocaml-find-provides.sh: option error at $1"; exit 1;;

    esac

done

# Get the list of files.

files=`sed "s/['\"]/\\\&/g"`

# Use ordinary find-provides first.

echo $files | tr [:blank:] '\n' | /usr/lib/rpm/find-provides

# Get list of .cmi, .cmo and .cma files.

files=`echo $files | tr [:blank:] '\n' | grep '\.cm[ioa]$'`

if [ -z "$files" ]; then exit 0; fi

# Get the list of modules exported by the files.

modules=`$OCAMLOBJINFO $files |

          grep -E '(Unit|Module) name: ' |

          awk '{print $3}'`

# Turn list of modules into a regexp that matches the module names.

modules_re=`echo $modules | sed 's/ /|/g'`

ignore_modules_re=`echo $ignore_modules | sed 's/ /|/g'`

# Get a list of the modules these file(s) provide.

$OCAMLOBJINFO $files |

grep -Eo '[0-9a-f]{32}[[:space:]]+[A-Za-z0-9_]+' |

grep -E "$modules_re" |

while read md5sum module; do

    echo "ocaml($module) = $md5sum"

done |

grep -Ev "$ignore_modules_re" |

sort -u