install.sh

#!/bin/sh -eu

help() {
    echo "OPA installation script: creates wrapper scripts to call OPA and tools"
    echo "with an environment setting their correct working directories; sets up"
    echo "the www-data user with a ~/mlstate directory"
    echo "Options:"
    echo "	--dir <dir>		the OPA installation prefix to work in"
    echo "				(by default, the current directory)"
    echo "	--help			show this help"
    echo "	--link <dir>		also install links to the scripts in the given directory"
    echo "	--no-ocaml		don't force the use of a specific ocaml"
    echo "	--ocaml-prefix		what ocaml prefix to use (default <prefix>/lib/opa/ocaml)"
    echo "	--ocamllib		ocaml libraries directory (default <ocaml-prefix>/lib/ocaml)"
    echo "	--ocamlopt		ocaml native compiler to use (default <ocaml-prefix>/bin/ocamlopt.opt)"
    echo "	--prefix <dir>		make wrappers for the given installation prefix"
    echo "				(by default, the value of --dir)"
    echo "	--quiet			be quiet"
    echo "	--uninstall		remove installed scripts instead"
}

BUILDDIR=_build
INSTALLDIR=$PWD
LINKDIR=""
UNINSTALL=false
NO_OCAML=false
QUIET=false
QMLFLAT=false

while [ $# -gt 0 ]; do
    case $1 in
        --qmlflat)
            QMLFLAT=true
            ;;
        --build-dir)
            if [ $# -lt 2 ]; then echo "Error: option $1 requires an argument"; exit 1; fi
            shift
            BUILDDIR=$1
            ;;
        --dir)
            if [ $# -lt 2 ]; then echo "Error: option $1 requires an argument"; exit 1; fi
            shift
            INSTALLDIR=$1
            ;;
        --prefix)
            if [ $# -lt 2 ]; then echo "Error: option $1 requires an argument"; exit 1; fi
            shift
            PREFIX=$1
            ;;
        --ocaml-prefix)
            if [ $# -lt 2 ]; then echo "Error: option $1 requires an argument"; exit 1; fi
            shift
            OCAML_PREFIX=$1
            ;;
        --ocamllib)
            if [ $# -lt 2 ]; then echo "Error: option $1 requires an argument"; exit 1; fi
            shift
            OCAMLLIB=$1
            ;;
        --ocamlopt)
            if [ $# -lt 2 ]; then echo "Error: option $1 requires an argument"; exit 1; fi
            shift
            OCAMLOPT=$1
            ;;
        --link)
            if [ $# -lt 2 ]; then echo "Error: option $1 requires an argument"; exit 1; fi
            shift
            LINKDIR=$1
            ;;
        --quiet)
            QUIET=true
            ;;
        --uninstall)
            UNINSTALL=true
            ;;
        --no-ocaml)
            NO_OCAML=true
            ;;
        --help)
            help
            exit 0
            ;;
        *)
            echo "Error: unknown option $1"
            help
            exit 1
    esac
    shift
done

: ${PREFIX:=$INSTALLDIR}
: ${OCAML_PREFIX:=$PREFIX/lib/opa/ocaml}

# create_wrapper basefile exename
create_wrapper() {
    local source="$1"; shift
    local name="$1"; shift
    [ $# -eq 0 ]
    local wrapper=$INSTALLDIR/bin/$name

    if [ $UNINSTALL = true ]; then
        [ $QUIET = true ] || echo "Removing $wrapper"
        rm -f $wrapper
        if [ -n "$LINKDIR" ]; then
            rm -f $LINKDIR/$name
        fi
    else
        [ $QUIET = true ] || echo "Creating $wrapper"
        mkdir -p $(dirname $wrapper)
        {
            echo '#!/bin/sh'
            echo "export MLSTATELIBS=$PREFIX"
            if [ $NO_OCAML = false ]; then
                echo "export OCAMLLIB=${OCAMLLIB:-$OCAML_PREFIX/lib/ocaml}"
                echo "export OCAMLOPT=${OCAMLOPT:-$OCAML_PREFIX/bin/ocamlopt.opt}"
                # may need to rewrite $PREFIX/lib/opa/ocaml/lib/ld.conf if ocaml is relocated
            fi
            echo 'exec '$source' "$@"'
        } > $wrapper
        chmod 755 $wrapper
        if [ -n "$LINKDIR" ]; then
            ln -fs $wrapper $LINKDIR/
        fi
    fi
}

# creating wrapper script 'opa'
create_wrapper $PREFIX/lib/opa/bin/opa-bin opa

# creating wrapper script 'opa-plugin-builder'
create_wrapper $PREFIX/lib/opa/bin/opa-plugin-builder-bin opa-plugin-builder

# creating wrapper script 'opa-plugin-browser'
create_wrapper $PREFIX/lib/opa/bin/opa-plugin-browser-bin opa-plugin-browser