138 lines
3.4 KiB
Bash
138 lines
3.4 KiB
Bash
# Copyright 1999-2011 Gentoo Foundation
|
|
# Distributed under the terms of the GNU General Public License v2
|
|
# $Header: /var/cvsroot/gentoo-x86/eclass/portability.eclass,v 1.24 2012/01/04 05:57:19 vapier Exp $
|
|
#
|
|
# Author: Diego Pettenò <flameeyes@gentoo.org>
|
|
#
|
|
# This eclass is created to avoid using non-portable GNUisms inside ebuilds
|
|
#
|
|
# NB: If you add anything, please comment it!
|
|
|
|
if [[ ${___ECLASS_ONCE_PORTABILITY} != "recur -_+^+_- spank" ]] ; then
|
|
___ECLASS_ONCE_PORTABILITY="recur -_+^+_- spank"
|
|
|
|
# treecopy orig1 orig2 orig3 .... dest
|
|
#
|
|
# mimic cp --parents copy, but working on BSD userland as well
|
|
treecopy() {
|
|
local dest=${!#}
|
|
local files_count=$#
|
|
|
|
while (( $# > 1 )); do
|
|
local dirstruct=$(dirname "$1")
|
|
mkdir -p "${dest}/${dirstruct}"
|
|
cp -pPR "$1" "${dest}/${dirstruct}"
|
|
|
|
shift
|
|
done
|
|
}
|
|
|
|
# seq min max
|
|
#
|
|
# compatibility function that mimes seq command if not available
|
|
seq() {
|
|
# First try `seq`
|
|
local p=$(type -P seq)
|
|
if [[ -n ${p} ]] ; then
|
|
"${p}" "$@"
|
|
return $?
|
|
fi
|
|
|
|
local min max step
|
|
case $# in
|
|
1) min=1 max=$1 step=1 ;;
|
|
2) min=$1 max=$2 step=1 ;;
|
|
3) min=$1 max=$3 step=$2 ;;
|
|
*) die "seq called with wrong number of arguments" ;;
|
|
esac
|
|
|
|
# Then try `jot`
|
|
p=$(type -P jot)
|
|
if [[ -n ${p} ]] ; then
|
|
local reps
|
|
# BSD userland
|
|
if [[ ${step} != 0 ]] ; then
|
|
reps=$(( (max - min) / step + 1 ))
|
|
else
|
|
reps=0
|
|
fi
|
|
|
|
jot $reps $min $max $step
|
|
return $?
|
|
fi
|
|
|
|
# Screw it, do the output ourselves
|
|
while :; do
|
|
[[ $max < $min && $step > 0 ]] && break
|
|
[[ $min < $max && $step < 0 ]] && break
|
|
echo $min
|
|
: $(( min += step ))
|
|
done
|
|
return 0
|
|
}
|
|
|
|
# Gets the linker flag to link to dlopen() function
|
|
dlopen_lib() {
|
|
# - Solaris needs nothing
|
|
# - Darwin needs nothing
|
|
# - *BSD needs nothing
|
|
# - Linux needs -ldl (glibc and uclibc)
|
|
# - Interix needs -ldl
|
|
case "${CHOST}" in
|
|
*-linux-gnu*|*-linux-uclibc|*-interix*)
|
|
echo "-ldl"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# Gets the name of the BSD-ish make command (pmake from NetBSD)
|
|
#
|
|
# This will return make (provided by system packages) for BSD userlands,
|
|
# or bsdmake for Darwin userlands and pmake for the rest of userlands,
|
|
# both of which are provided by sys-devel/pmake package.
|
|
#
|
|
# Note: the bsdmake for Darwin userland is with compatibility with MacOSX
|
|
# default name.
|
|
get_bmake() {
|
|
if [[ ${USERLAND} == *BSD ]]; then
|
|
echo make
|
|
elif [[ ${USERLAND} == "Darwin" ]]; then
|
|
echo bsdmake
|
|
else
|
|
echo pmake
|
|
fi
|
|
}
|
|
|
|
# Portable method of getting mount names and points.
|
|
# Returns as "point node fs options"
|
|
# Remember to convert 040 back to a space.
|
|
get_mounts() {
|
|
local point= node= fs= opts= foo=
|
|
|
|
# Linux has /proc/mounts which should always exist
|
|
if [[ $(uname -s) == "Linux" ]] ; then
|
|
while read node point fs opts foo ; do
|
|
echo "${point} ${node} ${fs} ${opts}"
|
|
done < /proc/mounts
|
|
return
|
|
fi
|
|
|
|
# OK, pray we have a -p option that outputs mounts in fstab format
|
|
# using tabs as the seperator.
|
|
# Then pray that there are no tabs in the either.
|
|
# Currently only FreeBSD supports this and the other BSDs will
|
|
# have to be patched.
|
|
# Athough the BSD's may support /proc, they do NOT put \040 in place
|
|
# of the spaces and we should not force a /proc either.
|
|
local IFS=$'\t'
|
|
LC_ALL=C mount -p | while read node point fs foo ; do
|
|
opts=${fs#* }
|
|
fs=${fs%% *}
|
|
echo "${point// /\040} ${node// /\040} ${fs%% *} ${opts// /\040}"
|
|
done
|
|
}
|
|
|
|
_dead_portability_user_funcs() { die "if you really need this, please file a bug for base-system@gentoo.org"; }
|
|
is-login-disabled() { _dead_portability_user_funcs; }
|
|
|
|
fi
|