# Copyright 1999-2021 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 # @ECLASS: portability.eclass # @MAINTAINER: # base-system@gentoo.org # @AUTHOR: # Diego Pettenò <flameeyes@gentoo.org> # @BLURB: This eclass is created to avoid using non-portable GNUisms inside ebuilds if [[ -z ${_PORTABILITY_ECLASS} ]]; then _PORTABILITY_ECLASS=1 # @FUNCTION: treecopy # @USAGE: <orig1> [orig2 orig3 ....] <dest> # @DESCRIPTION: # mimic cp --parents copy, but working on BSD userland as well treecopy() { local dest=${!#} local files_count=$# while (( $# > 1 )); do local dirstruct=$(dirname "$1") mkdir -p "${dest}/${dirstruct}" || die cp -pPR "$1" "${dest}/${dirstruct}" || die shift done } # @FUNCTION: seq # @USAGE: [min] <max> [step] # @RETURN: sequence from min to max regardless of seq command being present on system # @DESCRIPTION: # compatibility function that mimes seq command if not available seq() { # First try `seq` local p=$(type -P seq) if [[ -n ${p} ]] ; then "${p}" "$@" || die 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 || die return $? fi # Screw it, do the output ourselves while :; do [[ $max -lt $min && $step -gt 0 ]] && break [[ $min -lt $max && $step -gt 0 ]] && break echo $min : $(( min += step )) done return 0 } # @FUNCTION: dlopen_lib # @USAGE: # @RETURN: linker flag if needed # @DESCRIPTION: # Gets the linker flag to link to dlopen() function dlopen_lib() { # - Solaris needs nothing # - Darwin needs nothing # - *BSD needs nothing # - Linux needs -ldl (glibc and uclibc) # - Interix needs -ldl case "${CHOST}" in *-linux-gnu*|*-linux-uclibc|*-interix*) echo "-ldl" ;; esac } # @FUNCTION: get_bmake # @USAGE: # @RETURN: system version of make # @DESCRIPTION: # Gets the name of the BSD-ish make command (bmake 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 [[ ${CBUILD:-${CHOST}} == *bsd* ]]; then echo make elif [[ ${CBUILD:-${CHOST}} == *darwin* ]]; then echo bsdmake else echo bmake fi } # @FUNCTION: get_mounts # @USAGE: # @RETURN: table of mounts in form "point node fs opts" # @DESCRIPTION: # 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