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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2004 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/eutils.eclass,v 1.143 2005/01/26 16:19:12 ka0ttic Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/eutils.eclass,v 1.149 2005/02/04 21:24:53 chriswhite Exp $
4# 4#
5# Author: Martin Schlemmer <azarah@gentoo.org> 5# Author: Martin Schlemmer <azarah@gentoo.org>
6# 6#
7# This eclass is for general purpose functions that most ebuilds 7# This eclass is for general purpose functions that most ebuilds
8# have to implement themselves. 8# have to implement themselves.
14INHERITED="$INHERITED $ECLASS" 14INHERITED="$INHERITED $ECLASS"
15 15
16DEPEND="!bootstrap? ( sys-devel/patch )" 16DEPEND="!bootstrap? ( sys-devel/patch )"
17 17
18DESCRIPTION="Based on the ${ECLASS} eclass" 18DESCRIPTION="Based on the ${ECLASS} eclass"
19
20# ecpu_check
21# Usage:
22#
23# ecpu_check array_of_cpu_flags
24#
25# array_of_cpu_flags - An array of cpu flags to check against USE flags
26#
27# Checks user USE related cpu flags against /proc/cpuinfo. If user enables a
28# cpu flag that is not supported in their processor flags, it will warn the
29# user if CROSSCOMPILE is not set to 1 ( because cross compile users are
30# obviously using different cpu flags than their own cpu ). Examples:
31#
32# CPU_FLAGS=(mmx mmx2 sse sse2)
33# ecpu_check CPU_FLAGS
34# Chris White <chriswhite@gentoo.org> (03 Feb 2005)
35
36ecpu_check() {
37 # Think about changing below to: if [ "${CROSSCOMPILE}" -ne 1 -a -e "/proc/cpuinfo" ]
38 # and dropping the else if you do not plan on adding anything to that
39 # empty block ....
40 # PS: also try to add some quoting, and consider rather using ${foo} than $foo ...
41 if [ "${CROSSCOMPILE}" != "1" -a -e "/proc/cpuinfo" ]
42 then
43 CPU_FLAGS=${1}
44 USER_CPU=`grep "flags" /proc/cpuinfo`
45
46 for flags in `seq 1 ${#CPU_FLAGS[@]}`
47 do
48 if has ${CPU_FLAGS[${flags} - 1]} ${USER_CPU} && ! has ${CPU_FLAGS[${flags} - 1]} ${USE}
49 then
50 ewarn "Your system is ${CPU_FLAGS[${flags} - 1]} capable but you don't have it enabled!"
51 ewarn "You might be cross compiling (in this case set CROSSCOMPILE to 1 to disable this warning."
52 fi
53
54 if ! has ${CPU_FLAGS[${flags} - 1]} ${USER_CPU} && has ${CPU_FLAGS[${flags} -1]} ${USE}
55 then
56 ewarn "You have ${CPU_FLAGS[${flags} - 1]} support enabled but your processor doesn't"
57 ewarn "Seem to support it! You might be cross compiling or do not have /proc filesystem"
58 ewarn "enabled. If either is the case, set CROSSCOMPILE to 1 to disable this warning."
59 fi
60 done
61 fi
62}
19 63
20# Wait for the supplied number of seconds. If no argument is supplied, defaults 64# Wait for the supplied number of seconds. If no argument is supplied, defaults
21# to five seconds. If the EPAUSE_IGNORE env var is set, don't wait. If we're not 65# to five seconds. If the EPAUSE_IGNORE env var is set, don't wait. If we're not
22# outputting to a terminal, don't wait. For compatability purposes, the argument 66# outputting to a terminal, don't wait. For compatability purposes, the argument
23# must be an integer greater than zero. 67# must be an integer greater than zero.

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