opambuild.sh

#! /bin/sh -Cefu

. /usr/local/bin/mashlib.sh

vconc OPAM $HOME /bin/opam
vconc REALPROG $HOME /.opam/ $($OPAM switch show) /bin/ocamlbuild

CURDIR=$PWD
while : ; do
    if exists $PWD/_tags ; then break ; fi
    case $PWD in
        (/)
            printf 'unable to find build directory\n' >&2
            exit 1
            ;;
    esac
    cd ..
done

printf 'Entering directory %s%s%s\n' '`' $PWD "'"
set +e ; $REALPROG -classic-display "$@" ; STATUS=$? ; set -e
printf 'Leaving directory %s%s%s\n' '`' $PWD "'"

cd $CURDIR
exit $STATUS

A wrapper script for ocamlbuild, to help emacs correlate error messages with its current directory.