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# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: wrapper.eclass
# @MAINTAINER:
# base-system@gentoo.org
# @BLURB: create a shell wrapper script
if [[ -z ${_WRAPPER_ECLASS} ]]; then
_WRAPPER_ECLASS=1
# @FUNCTION: make_wrapper
# @USAGE: <wrapper> <target> [chdir] [libpaths] [installpath]
# @DESCRIPTION:
# Create a shell wrapper script named wrapper in installpath
# (defaults to the bindir) to execute target (default of wrapper)
# by first optionally setting LD_LIBRARY_PATH to the colon-delimited
# libpaths followed by optionally changing directory to chdir.
make_wrapper() {
local wrapper=$1 bin=$2 chdir=$3 libdir=$4 path=$5
local tmpwrapper="${T}/tmp.wrapper.${wrapper##*/}"
has "${EAPI:-0}" 0 1 2 && local EPREFIX=""
(
echo '#!/bin/sh'
if [[ -n ${libdir} ]] ; then
local var
if [[ ${CHOST} == *-darwin* ]] ; then
var=DYLD_LIBRARY_PATH
else
var=LD_LIBRARY_PATH
fi
cat <<-EOF
if [ "\${${var}+set}" = "set" ] ; then
export ${var}="\${${var}}:${EPREFIX}${libdir}"
else
export ${var}="${EPREFIX}${libdir}"
fi
EOF
fi
[[ -n ${chdir} ]] && printf 'cd "%s" &&\n' "${EPREFIX}${chdir}"
# We don't want to quote ${bin} so that people can pass complex
# things as ${bin} ... "./someprog --args"
printf 'exec %s "$@"\n' "${bin/#\//${EPREFIX}/}"
) > "${tmpwrapper}"
chmod go+rx "${tmpwrapper}"
if [[ -n ${path} ]] ; then
(
exeopts -m 0755
exeinto "${path}"
newexe "${tmpwrapper}" "${wrapper}"
) || die
else
newbin "${tmpwrapper}" "${wrapper}" || die
fi
}
fi
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