/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.3 Revision 1.18
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 1.18 2003/06/17 14:38:32 vapier 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"
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} $1"
23 CXXFLAGS="${CXXFLAGS/$x}" 60 CXXFLAGS="${CXXFLAGS} $1"
61}
62
63replace-flags() {
64 CFLAGS="${CFLAGS/${1}/${2} }"
65 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
66}
67
68is-flag() {
69 for x in ${CFLAGS} ${CXXFLAGS} ; do
70 if [ "${x}" == "$1" ] ; then
71 echo true
72 return 0
73 fi
74 done
75 return 1
76}
77
78strip-flags() {
79 local NEW_CFLAGS=""
80 local NEW_CXXFLAGS=""
81
82 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
83 if [ "${ACCEPT_KEYWORDS/~/}" != "${ACCEPT_KEYWORDS}" -a \
84 "${ACCEPT_KEYWORDS/-~/}" = "${ACCEPT_KEYWORDS}" ]
85 then
86 if use debug &> /dev/null
87 then
88 einfo "Enabling the use of some unstable flags"
89 fi
90
91 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
92 fi
93
94 set -f
95
96 for x in ${CFLAGS}
97 do
98 for y in ${ALLOWED_FLAGS}
99 do
100 flag=${x%%=*}
101 if [ "${flag%%${y}}" = "" ]
102 then
103 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
104 break
105 fi
106 done
24 done 107 done
25 108
109 for x in ${CXXFLAGS}
110 do
111 for y in ${ALLOWED_FLAGS}
112 do
113 flag=${x%%=*}
114 if [ "${flag%%${y}}" = "" ]
115 then
116 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
117 break
118 fi
119 done
120 done
121
122 set +f
123
124 use debug &>/dev/null && einfo "CFLAGS=\"${NEW_CFLAGS}\""
125 use debug &>/dev/null && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
126
127 export CFLAGS="${NEW_CFLAGS}"
128 export CXXFLAGS="${NEW_CXXFLAGS}"
26} 129}
27 130
28append-flags () { 131get-flag() {
132 local findflag="$1"
29 133
30 134 for f in ${CFLAGS} ${CXXFLAGS} ; do
31 CFLAGS="$CFLAGS $1" 135 if [ "${f/${findflag}}" != "${f}" ] ; then
32 CXXFLAGS="$CXXFLAGS $1" 136 echo "${f/-${findflag}=}"
33 137 return
138 fi
139 done
34} 140}
35 141
36change-flags () { 142replace-sparc64-flags() {
143 local SPARC64_CPUS="ultrasparc v9"
37 144
38 CFLAGS="${CFLAGS/${1}/${2}" 145 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
39 CXXFLAGS="${CXXFLAGS/${1}/${2}" 146 then
40 147 for x in ${SPARC64_CPUS}
148 do
149 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
150 done
151 else
152 for x in ${SPARC64_CPUS}
153 do
154 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
155 done
156 fi
157
158 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
159 then
160 for x in ${SPARC64_CPUS}
161 do
162 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
163 done
164 else
165 for x in ${SPARC64_CPUS}
166 do
167 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
168 done
169 fi
41} 170}

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