/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.3 Revision 1.25
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 1.25 2003/08/20 04:11:27 agriffis 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" ;;
43 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
44esac
20 45
46# C[XX]FLAGS that we are think is ok, but needs testing
47# NOTE: currently -Os have issues with gcc3 and K6* arch's
48UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
49
50filter-mfpmath() {
21 for x in $1; do 51 for a in $CFLAGS; do
22 CFLAGS="${CFLAGS/$x}" 52 if [ "${a:0:8}" == "-mfpmath" ]; then
23 CXXFLAGS="${CXXFLAGS/$x}" 53 orig_mfpmath=$a
54 fi
24 done 55 done
25 56
57 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
58 for b in $@; do
59 mfpmath="${mfpmath/$b}"
60 done
61
62 if [ -z "${mfpmath/ }" ]; then
63 filter-flags "$orig_mfpmath"
64 else
65 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
66 replace-flags "$orig_mfpmath" "$new_mfpmath"
67 fi
26} 68}
27 69
28append-flags () { 70filter-flags() {
29 71 # we do this fancy spacing stuff so as to not filter
30 72 # out part of a flag ... we want flag atoms ! :D
31 CFLAGS="$CFLAGS $1" 73 CFLAGS=" ${CFLAGS} "
32 CXXFLAGS="$CXXFLAGS $1" 74 CXXFLAGS=" ${CXXFLAGS} "
33 75 for x in $@ ; do
76 CFLAGS="${CFLAGS/ ${x} / }"
77 CXXFLAGS="${CXXFLAGS/ ${x} / }"
78 done
79 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
80 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
34} 81}
35 82
36change-flags () { 83append-flags() {
84 CFLAGS="${CFLAGS} $@"
85 CXXFLAGS="${CXXFLAGS} $@"
86}
37 87
88replace-flags() {
38 CFLAGS="${CFLAGS/${1}/${2}" 89 CFLAGS="${CFLAGS/${1}/${2} }"
39 CXXFLAGS="${CXXFLAGS/${1}/${2}" 90 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
91}
40 92
93is-flag() {
94 for x in ${CFLAGS} ${CXXFLAGS} ; do
95 if [ "${x}" == "$1" ] ; then
96 echo true
97 return 0
98 fi
99 done
100 return 1
41} 101}
102
103strip-flags() {
104 local NEW_CFLAGS=""
105 local NEW_CXXFLAGS=""
106
107 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
108 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
109 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
110 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
111 fi
112
113 set -f
114
115 for x in ${CFLAGS}
116 do
117 for y in ${ALLOWED_FLAGS}
118 do
119 flag=${x%%=*}
120 if [ "${flag%%${y}}" = "" ]
121 then
122 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
123 break
124 fi
125 done
126 done
127
128 for x in ${CXXFLAGS}
129 do
130 for y in ${ALLOWED_FLAGS}
131 do
132 flag=${x%%=*}
133 if [ "${flag%%${y}}" = "" ]
134 then
135 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
136 break
137 fi
138 done
139 done
140
141 set +f
142
143 [ `use debug` ] \
144 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
145 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
146
147 export CFLAGS="${NEW_CFLAGS}"
148 export CXXFLAGS="${NEW_CXXFLAGS}"
149}
150
151get-flag() {
152 local findflag="$1"
153
154 for f in ${CFLAGS} ${CXXFLAGS} ; do
155 if [ "${f/${findflag}}" != "${f}" ] ; then
156 echo "${f/-${findflag}=}"
157 return
158 fi
159 done
160}
161
162replace-sparc64-flags() {
163 local SPARC64_CPUS="ultrasparc v9"
164
165 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
166 then
167 for x in ${SPARC64_CPUS}
168 do
169 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
170 done
171 else
172 for x in ${SPARC64_CPUS}
173 do
174 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
175 done
176 fi
177
178 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
179 then
180 for x in ${SPARC64_CPUS}
181 do
182 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
183 done
184 else
185 for x in ${SPARC64_CPUS}
186 do
187 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
188 done
189 fi
190}

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