/[gentoo-x86]/eclass/flag-o-matic.eclass
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1# Copyright 1999-2002 Gentoo Technologies, Inc. 1# Copyright 1999-2002 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# Author Bart Verwilst <verwilst@gentoo.org> 3# Author Bart Verwilst <verwilst@gentoo.org>
4# /space/gentoo/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass 4# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.8 2002/10/13 01:01:58 azarah Exp $
5
5ECLASS=flag-o-matic 6ECLASS=flag-o-matic
6INHERITED="$INHERITED $ECLASS" 7INHERITED="$INHERITED $ECLASS"
8
7# 9#
8#### filter-flags <flag> #### 10#### filter-flags <flag> ####
9# Remove particular flags from C[XX]FLAGS 11# Remove particular flags from C[XX]FLAGS
10# 12#
11#### append-flags <flag> #### 13#### append-flags <flag> ####
16# 18#
17#### is-flag <flag> #### 19#### is-flag <flag> ####
18# Returns "true" if flag is set in C[XX]FLAGS 20# Returns "true" if flag is set in C[XX]FLAGS
19# Matches only complete flag 21# Matches only complete flag
20# 22#
23#### strip-flags ####
24# Strip C[XX]FLAGS of everything except known
25# good options.
26#
21 27
22filter-flags () { 28filter-flags () {
23 29
24 for x in $1; do 30 for x in $1
31 do
25 CFLAGS="${CFLAGS/$x}" 32 export CFLAGS="${CFLAGS/${x}}"
26 CXXFLAGS="${CXXFLAGS/$x}" 33 export CXXFLAGS="${CXXFLAGS/${x}}"
27 done 34 done
28 35
29} 36}
30 37
31append-flags () { 38append-flags () {
32 39
33
34 CFLAGS="$CFLAGS $1" 40 CFLAGS="${CFLAGS} $1"
35 CXXFLAGS="$CXXFLAGS $1" 41 CXXFLAGS="${CXXFLAGS} $1"
36 42
37} 43}
38 44
39replace-flags () { 45replace-flags () {
40 46
43 49
44} 50}
45 51
46is-flag() { 52is-flag() {
47 53
48 for x in $CFLAGS $CXXFLAGS; do 54 for x in ${CFLAGS} ${CXXFLAGS}
55 do
49 if [ "$x" == "$1" ]; then 56 if [ "${x}" = "$1" ]
57 then
50 echo true 58 echo true
51 break 59 break
52 fi 60 fi
53 done 61 done
54 62
55} 63}
64
65strip-flags() {
66
67 local NEW_CFLAGS=""
68 local NEW_CXXFLAGS=""
69
70 local ALLOWED_FLAGS="-O -mcpu -march -pipe"
71
72 set -f
73
74 for x in ${CFLAGS}
75 do
76 for y in ${ALLOWED_FLAGS}
77 do
78 if [ "${x/${y}}" != "${x}" ]
79 then
80 if [ -z "${NEW_CFLAGS}" ]
81 then
82 NEW_CFLAGS="${x}"
83 else
84 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
85 fi
86 fi
87 done
88 done
89
90 for x in ${CXXFLAGS}
91 do
92 for y in ${ALLOWED_FLAGS}
93 do
94 if [ "${x/${y}}" != "${x}" ]
95 then
96 if [ -z "${NEW_CXXFLAGS}" ]
97 then
98 NEW_CXXFLAGS="${x}"
99 else
100 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
101 fi
102 fi
103 done
104 done
105
106 set +f
107
108 export CFLAGS="${NEW_CFLAGS}"
109 export CXXFLAGS="${NEW_CXXFLAGS}"
110}
111

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