/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.3 Revision 1.21
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 1.21 2003/06/25 05:56:40 kumba 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#
8#### filter-flags <flag> #### 11#### filter-flags <flags> ####
9# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
10# 14#
11#### append-flags <flag> #### 15#### append-flags <flags> ####
12# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
13# 17#
14#### change-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
15# Replace a flag by another one 19# Replace a flag by another one
20#
21#### is-flag <flag> ####
22# Returns "true" if flag is set in C[XX]FLAGS
23# Matches only complete a flag
24#
25#### strip-flags ####
26# Strip C[XX]FLAGS of everything except known
27# good options.
28#
29#### get-flag <flag> ####
30# Find and echo the value for a particular flag
31#
32#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value
34# as mtune if none specified.
16# 35#
17 36
18 37
19filter-flags () { 38# C[XX]FLAGS that we allow in strip-flags
39ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g -mips1 -mips2 -mips3 -mips4 -mabi"
20 40
41# C[XX]FLAGS that we are think is ok, but needs testing
42# NOTE: currently -Os have issues with gcc3 and K6* arch's
43UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
44
45filter-flags() {
46 # we do this fancy spacing stuff so as to not filter
47 # out part of a flag ... we want flag atoms ! :D
48 export CFLAGS=" ${CFLAGS} "
49 export CXXFLAGS=" ${CXXFLAGS} "
21 for x in $1; do 50 for x in $@ ; do
51 export CFLAGS="${CFLAGS/ ${x} / }"
52 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
53 done
54 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
55 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
56}
57
58append-flags() {
22 CFLAGS="${CFLAGS/$x}" 59 CFLAGS="${CFLAGS} $@"
23 CXXFLAGS="${CXXFLAGS/$x}" 60 CXXFLAGS="${CXXFLAGS} $@"
61}
62
63replace-flags() {
64 CFLAGS="${CFLAGS/${1}/${2} }"
65 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
66}
67
68is-flag() {
69 for x in ${CFLAGS} ${CXXFLAGS} ; do
70 if [ "${x}" == "$1" ] ; then
71 echo true
72 return 0
73 fi
74 done
75 return 1
76}
77
78strip-flags() {
79 local NEW_CFLAGS=""
80 local NEW_CXXFLAGS=""
81
82 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
83 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
84 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
85 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
86 fi
87
88 set -f
89
90 for x in ${CFLAGS}
91 do
92 for y in ${ALLOWED_FLAGS}
93 do
94 flag=${x%%=*}
95 if [ "${flag%%${y}}" = "" ]
96 then
97 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
98 break
99 fi
100 done
24 done 101 done
25 102
103 for x in ${CXXFLAGS}
104 do
105 for y in ${ALLOWED_FLAGS}
106 do
107 flag=${x%%=*}
108 if [ "${flag%%${y}}" = "" ]
109 then
110 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
111 break
112 fi
113 done
114 done
115
116 set +f
117
118 [ `use debug` ] \
119 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
120 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
121
122 export CFLAGS="${NEW_CFLAGS}"
123 export CXXFLAGS="${NEW_CXXFLAGS}"
26} 124}
27 125
28append-flags () { 126get-flag() {
127 local findflag="$1"
29 128
30 129 for f in ${CFLAGS} ${CXXFLAGS} ; do
31 CFLAGS="$CFLAGS $1" 130 if [ "${f/${findflag}}" != "${f}" ] ; then
32 CXXFLAGS="$CXXFLAGS $1" 131 echo "${f/-${findflag}=}"
33 132 return
133 fi
134 done
34} 135}
35 136
36change-flags () { 137replace-sparc64-flags() {
138 local SPARC64_CPUS="ultrasparc v9"
37 139
38 CFLAGS="${CFLAGS/${1}/${2}" 140 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
39 CXXFLAGS="${CXXFLAGS/${1}/${2}" 141 then
40 142 for x in ${SPARC64_CPUS}
143 do
144 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
145 done
146 else
147 for x in ${SPARC64_CPUS}
148 do
149 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
150 done
151 fi
152
153 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
154 then
155 for x in ${SPARC64_CPUS}
156 do
157 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
158 done
159 else
160 for x in ${SPARC64_CPUS}
161 do
162 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
163 done
164 fi
41} 165}

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