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Revision 1.14 - (show annotations) (download)
Sat Oct 31 15:34:59 2009 UTC (5 years, 1 month ago) by grobian
Branch: MAIN
Changes since 1.13: +2 -2 lines
fix CHOST match for arm-boxes, thanks Markus Meier in bug #291289

1 # Copyright 1999-2005 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/portability.eclass,v 1.13 2009/03/27 08:00:56 drizzt Exp $
4 #
5 # Author: Diego Pettenò <flameeyes@gentoo.org>
6 #
7 # This eclass is created to avoid using non-portable GNUisms inside ebuilds
8 #
9 # NB: If you add anything, please comment it!
10
11 # treecopy orig1 orig2 orig3 .... dest
12 #
13 # mimic cp --parents copy, but working on BSD userland as well
14 treecopy() {
15 dest=${!#}
16 files_count=$#
17
18 while(( $# > 1 )); do
19 dirstruct=$(dirname "$1")
20 mkdir -p "${dest}/${dirstruct}"
21 cp -pPR "$1" "${dest}/${dirstruct}"
22
23 shift
24 done
25 }
26
27 # seq min max
28 #
29 # compatibility function that mimes seq command if not available
30 seq() {
31 local p=$(type -P seq)
32
33 case $# in
34 1) min=1 max=$1 step=1 ;;
35 2) min=$1 max=$2 step=1 ;;
36 3) min=$1 max=$3 step=$2 ;;
37 *) die "seq called with wrong number of arguments" ;;
38 esac
39
40 if [[ -z ${p} ]] ; then
41 local reps
42 # BSD userland
43 if [[ ${step} != 0 ]]; then
44 reps=$(( ($max-$min) / $step +1 ))
45 else
46 reps=0
47 fi
48
49 jot $reps $min $max $step
50 else
51 "${p}" $min $step $max
52 fi
53 }
54
55 # Gets the linker flag to link to dlopen() function
56 dlopen_lib() {
57 # this might need a proper case statement, so far this seems to work as is
58 # - Solaris needs nothing
59 # - Darwin needs nothing
60 # - *BSD needs nothing
61 # - Linux needs -ldl (glibc and uclibc)
62 if [[ ${CHOST} == *-linux-gnu* || ${CHOST} == *-linux-uclibc ]]; then
63 echo "-ldl"
64 fi
65 }
66
67 # Gets the home directory for the specified user
68 # it's a wrap around egetent as the position of the home directory in the line
69 # varies depending on the os used.
70 #
71 # To use that, inherit eutils, not portability!
72 egethome() {
73 ent=$(egetent passwd $1)
74
75 case ${CHOST} in
76 *-darwin*|*-freebsd*|*-dragonfly*)
77 # Darwin, OSX, FreeBSD and DragonFly use position 9 to store homedir
78 echo ${ent} | cut -d: -f9
79 ;;
80 *)
81 # Linux, NetBSD and OpenBSD use position 6 instead
82 echo ${ent} | cut -d: -f6
83 ;;
84 esac
85 }
86
87 # Gets the shell for the specified user
88 # it's a wrap around egetent as the position of the home directory in the line
89 # varies depending on the os used.
90 #
91 # To use that, inherit eutils, not portability!
92 egetshell() {
93 ent=$(egetent passwd "$1")
94
95 case ${CHOST} in
96 *-darwin*|*-freebsd*|*-dragonfly*)
97 # Darwin, OSX, FreeBSD and DragonFly use position 9 to store homedir
98 echo ${ent} | cut -d: -f10
99 ;;
100 *)
101 # Linux, NetBSD and OpenBSD use position 6 instead
102 echo ${ent} cut -d: -f7
103 ;;
104 esac
105 }
106
107 # Returns true if specified user has a shell that precludes logins
108 # on whichever operating system.
109 is-login-disabled() {
110 shell=$(egetshell "$1")
111
112 case ${shell} in
113 /bin/false|/usr/bin/false|/sbin/nologin|/usr/sbin/nologin)
114 return 0 ;;
115 *)
116 return 1 ;;
117 esac
118 }
119
120 # Gets the name of the BSD-ish make command (pmake from NetBSD)
121 #
122 # This will return make (provided by system packages) for BSD userlands,
123 # or bsdmake for Darwin userlands and pmake for the rest of userlands,
124 # both of which are provided by sys-devel/pmake package.
125 #
126 # Note: the bsdmake for Darwin userland is with compatibility with MacOSX
127 # default name.
128 get_bmake() {
129 if [[ ${USERLAND} == *BSD ]]; then
130 echo make
131 elif [[ ${USERLAND} == "Darwin" ]]; then
132 echo bsdmake
133 else
134 echo pmake
135 fi
136 }
137
138 # Portable method of getting mount names and points.
139 # Returns as "point node fs options"
140 # Remember to convert 040 back to a space.
141 get_mounts() {
142 local point= node= fs= opts= foo=
143
144 # Linux has /proc/mounts which should always exist
145 if [[ $(uname -s) == "Linux" ]] ; then
146 while read node point fs opts foo ; do
147 echo "${point} ${node} ${fs} ${opts}"
148 done < /proc/mounts
149 return
150 fi
151
152 # OK, pray we have a -p option that outputs mounts in fstab format
153 # using tabs as the seperator.
154 # Then pray that there are no tabs in the either.
155 # Currently only FreeBSD supports this and the other BSDs will
156 # have to be patched.
157 # Athough the BSD's may support /proc, they do NOT put \040 in place
158 # of the spaces and we should not force a /proc either.
159 local IFS=$'\t'
160 LC_ALL=C mount -p | while read node point fs foo ; do
161 opts=${fs#* }
162 fs=${fs%% *}
163 echo "${point// /\040} ${node// /\040} ${fs%% *} ${opts// /\040}"
164 done
165 }

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