/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.2 Revision 1.15
1# Copyright 1999-2002 Gentoo Technologies, Inc. 1# Copyright 1999-2003 Gentoo Technologies, Inc.
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/flag-o-matic.eclass,v 1.15 2003/04/06 23:35:41 method Exp $
4#
3# Author Bart Verwilst <verwilst@gentoo.org> 5# Author Bart Verwilst <verwilst@gentoo.org>
4# /space/gentoo/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass 6
5ECLASS=flag-o-matic 7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS"
6 9
7# 10#
11#### filter-flags <flag> ####
8#Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
9# 13#
14#### append-flags <flag> ####
15# Add extra flags to your current C[XX]FLAGS
16#
17#### replace-flags <orig.flag> <new.flag> ###
18# Replace a flag by another one
19#
20#### is-flag <flag> ####
21# Returns "true" if flag is set in C[XX]FLAGS
22# Matches only complete flag
23#
24#### strip-flags ####
25# Strip C[XX]FLAGS of everything except known
26# good options.
27#
28#### get-flag <flag> ####
29# Find and echo the value for a particular flag
30#
31
32ALLOWED_FLAGS="-O -mcpu -march -mtune -fstack-protector -pipe -g"
33
34
10filter-flags () { 35filter-flags () {
11 36
12 for x in $1; do 37 for x in $1
38 do
13 CFLAGS="${CFLAGS/$x}" 39 export CFLAGS="${CFLAGS/${x}}"
14 CXXFLAGS="${CXXFLAGS/$x}" 40 export CXXFLAGS="${CXXFLAGS/${x}}"
15 done 41 done
16 42
17} 43}
18 44
19#
20#Add flags to the current C[XX]FLAGS
21#
22append-flags () { 45append-flags () {
23 46
24
25 CFLAGS="$CFLAGS $1" 47 CFLAGS="${CFLAGS} $1"
26 CXXFLAGS="$CXXFLAGS $1" 48 CXXFLAGS="${CXXFLAGS} $1"
27 49
28} 50}
29 51
30max-optim () { 52replace-flags () {
31 53
32 for x in $CFLAGS; do 54 CFLAGS="${CFLAGS/${1}/${2} }"
33 echo $x 55 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
56
57}
58
59is-flag() {
60
61 for x in ${CFLAGS} ${CXXFLAGS}
62 do
63 if [ "${x}" = "$1" ]
64 then
65 echo true
66 break
67 fi
34 done 68 done
35 69
36} 70}
71
72strip-flags() {
73
74 local NEW_CFLAGS=""
75 local NEW_CXXFLAGS=""
76
77 set -f
78
79 for x in ${CFLAGS}
80 do
81 for y in ${ALLOWED_FLAGS}
82 do
83 flag=${x%%=*}
84 if [ "${flag%%${y}}" = "" ]
85 then
86 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
87 break
88 fi
89 done
90 done
91
92 for x in ${CXXFLAGS}
93 do
94 for y in ${ALLOWED_FLAGS}
95 do
96 flag=${x%%=*}
97 if [ "${flag%%${y}}" = "" ]
98 then
99 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
100 break
101 fi
102 done
103 done
104
105 set +f
106
107 export CFLAGS="${NEW_CFLAGS}"
108 export CXXFLAGS="${NEW_CXXFLAGS}"
109}
110
111get-flag() {
112 local findflag="$1"
113
114 for f in ${CFLAGS} ${CXXFLAGS} ; do
115 if [ "${f/${findflag}}" != "${f}" ] ; then
116 echo "${f/-${findflag}=}"
117 return
118 fi
119 done
120}

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