/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.7 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
6INHERITED="$INHERITED $ECLASS" 8INHERITED="$INHERITED $ECLASS"
9
7# 10#
8#### filter-flags <flag> #### 11#### filter-flags <flag> ####
9# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
10# 13#
11#### append-flags <flag> #### 14#### append-flags <flag> ####
16# 19#
17#### is-flag <flag> #### 20#### is-flag <flag> ####
18# Returns "true" if flag is set in C[XX]FLAGS 21# Returns "true" if flag is set in C[XX]FLAGS
19# Matches only complete flag 22# Matches only complete flag
20# 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
21 34
22filter-flags () { 35filter-flags () {
23 36
24 for x in $1; do 37 for x in $1
38 do
25 CFLAGS="${CFLAGS/$x}" 39 export CFLAGS="${CFLAGS/${x}}"
26 CXXFLAGS="${CXXFLAGS/$x}" 40 export CXXFLAGS="${CXXFLAGS/${x}}"
27 done 41 done
28 42
29} 43}
30 44
31append-flags () { 45append-flags () {
32 46
33
34 CFLAGS="$CFLAGS $1" 47 CFLAGS="${CFLAGS} $1"
35 CXXFLAGS="$CXXFLAGS $1" 48 CXXFLAGS="${CXXFLAGS} $1"
36 49
37} 50}
38 51
39replace-flags () { 52replace-flags () {
40 53
41 CFLAGS="${CFLAGS/${1}/${2}}" 54 CFLAGS="${CFLAGS/${1}/${2} }"
42 CXXFLAGS="${CXXFLAGS/${1}/${2}}" 55 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
43 56
44} 57}
45 58
46is-flag() { 59is-flag() {
47 60
48 for x in $CFLAGS $CXXFLAGS; do 61 for x in ${CFLAGS} ${CXXFLAGS}
62 do
49 if [ "$x" == "$1" ]; then 63 if [ "${x}" = "$1" ]
64 then
50 echo true 65 echo true
51 break 66 break
52 fi 67 fi
53 done 68 done
54 69
55} 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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