/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.3 Revision 1.23
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 1.23 2003/07/18 20:11:22 tester 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 $ECLASS"
6 9
7# 10#
8#### filter-flags <flag> #### 11#### filter-flags <flags> ####
9# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
10# 14#
11#### append-flags <flag> #### 15#### append-flags <flags> ####
12# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
13# 17#
14#### change-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
15# Replace a flag by another one 19# Replace a flag by another one
20#
21#### is-flag <flag> ####
22# Returns "true" if flag is set in C[XX]FLAGS
23# Matches only complete a flag
24#
25#### strip-flags ####
26# Strip C[XX]FLAGS of everything except known
27# good options.
28#
29#### get-flag <flag> ####
30# Find and echo the value for a particular flag
31#
32#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value
34# as mtune if none specified.
16# 35#
17 36
18 37
19filter-flags () { 38# C[XX]FLAGS that we allow in strip-flags
39ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
40case "${ARCH}" in
41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
42 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
43esac
20 44
45# C[XX]FLAGS that we are think is ok, but needs testing
46# NOTE: currently -Os have issues with gcc3 and K6* arch's
47UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
48
49filter-flags() {
50 # we do this fancy spacing stuff so as to not filter
51 # out part of a flag ... we want flag atoms ! :D
52 export CFLAGS=" ${CFLAGS} "
53 export CXXFLAGS=" ${CXXFLAGS} "
21 for x in $1; do 54 for x in $@ ; do
55 export CFLAGS="${CFLAGS/ ${x} / }"
56 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
57 done
58 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
59 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
60}
61
62append-flags() {
22 CFLAGS="${CFLAGS/$x}" 63 CFLAGS="${CFLAGS} $@"
23 CXXFLAGS="${CXXFLAGS/$x}" 64 CXXFLAGS="${CXXFLAGS} $@"
65}
66
67replace-flags() {
68 CFLAGS="${CFLAGS/${1}/${2} }"
69 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
70}
71
72is-flag() {
73 for x in ${CFLAGS} ${CXXFLAGS} ; do
74 if [ "${x}" == "$1" ] ; then
75 echo true
76 return 0
77 fi
78 done
79 return 1
80}
81
82strip-flags() {
83 local NEW_CFLAGS=""
84 local NEW_CXXFLAGS=""
85
86 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
87 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
88 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
89 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
90 fi
91
92 set -f
93
94 for x in ${CFLAGS}
95 do
96 for y in ${ALLOWED_FLAGS}
97 do
98 flag=${x%%=*}
99 if [ "${flag%%${y}}" = "" ]
100 then
101 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
102 break
103 fi
104 done
24 done 105 done
25 106
107 for x in ${CXXFLAGS}
108 do
109 for y in ${ALLOWED_FLAGS}
110 do
111 flag=${x%%=*}
112 if [ "${flag%%${y}}" = "" ]
113 then
114 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
115 break
116 fi
117 done
118 done
119
120 set +f
121
122 [ `use debug` ] \
123 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
124 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
125
126 export CFLAGS="${NEW_CFLAGS}"
127 export CXXFLAGS="${NEW_CXXFLAGS}"
26} 128}
27 129
28append-flags () { 130get-flag() {
131 local findflag="$1"
29 132
30 133 for f in ${CFLAGS} ${CXXFLAGS} ; do
31 CFLAGS="$CFLAGS $1" 134 if [ "${f/${findflag}}" != "${f}" ] ; then
32 CXXFLAGS="$CXXFLAGS $1" 135 echo "${f/-${findflag}=}"
33 136 return
137 fi
138 done
34} 139}
35 140
36change-flags () { 141replace-sparc64-flags() {
142 local SPARC64_CPUS="ultrasparc v9"
37 143
38 CFLAGS="${CFLAGS/${1}/${2}" 144 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
39 CXXFLAGS="${CXXFLAGS/${1}/${2}" 145 then
40 146 for x in ${SPARC64_CPUS}
147 do
148 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
149 done
150 else
151 for x in ${SPARC64_CPUS}
152 do
153 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
154 done
155 fi
156
157 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
158 then
159 for x in ${SPARC64_CPUS}
160 do
161 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
162 done
163 else
164 for x in ${SPARC64_CPUS}
165 do
166 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
167 done
168 fi
41} 169}

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