/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.3 Revision 1.26
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 1.26 2003/09/15 15:21:04 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 $ECLASS"
6 9
7# 10#
8#### filter-flags <flag> #### 11#### filter-flags <flags> ####
9# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
10# 14#
11#### append-flags <flag> #### 15#### append-flags <flags> ####
12# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
13# 17#
14#### change-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
15# Replace a flag by another one 19# Replace a flag by another one
16# 20#
21#### is-flag <flag> ####
22# Returns "true" if flag is set in C[XX]FLAGS
23# Matches only complete a flag
24#
25#### strip-flags ####
26# Strip C[XX]FLAGS of everything except known
27# good options.
28#
29#### get-flag <flag> ####
30# Find and echo the value for a particular flag
31#
32#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value
34# as mtune if none specified.
35#
36#### filter-mfpmath <math types> ####
37# Remove specified math types from the fpmath specification
38# If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
39# will leave the user with -mfpmath=386
17 40
41# C[XX]FLAGS that we allow in strip-flags
42ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
43case "${ARCH}" in
44 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
45 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
46 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
47esac
18 48
19filter-flags () { 49# C[XX]FLAGS that we are think is ok, but needs testing
50# NOTE: currently -Os have issues with gcc3 and K6* arch's
51UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
20 52
53filter-mfpmath() {
21 for x in $1; do 54 for a in $CFLAGS; do
22 CFLAGS="${CFLAGS/$x}" 55 if [ "${a:0:8}" == "-mfpmath" ]; then
23 CXXFLAGS="${CXXFLAGS/$x}" 56 orig_mfpmath=$a
57 fi
24 done 58 done
25 59
60 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
61 for b in $@; do
62 mfpmath="${mfpmath/$b}"
63 done
64
65 if [ -z "${mfpmath/ }" ]; then
66 filter-flags "$orig_mfpmath"
67 else
68 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
69 replace-flags "$orig_mfpmath" "$new_mfpmath"
70 fi
26} 71}
27 72
28append-flags () { 73filter-flags() {
29 74 # we do this fancy spacing stuff so as to not filter
30 75 # out part of a flag ... we want flag atoms ! :D
31 CFLAGS="$CFLAGS $1" 76 CFLAGS=" ${CFLAGS} "
32 CXXFLAGS="$CXXFLAGS $1" 77 CXXFLAGS=" ${CXXFLAGS} "
33 78 for x in $@ ; do
79 CFLAGS="${CFLAGS/ ${x} / }"
80 CXXFLAGS="${CXXFLAGS/ ${x} / }"
81 done
82 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
83 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
34} 84}
35 85
36change-flags () { 86append-flags() {
87 CFLAGS="${CFLAGS} $@"
88 CXXFLAGS="${CXXFLAGS} $@"
89}
37 90
91replace-flags() {
38 CFLAGS="${CFLAGS/${1}/${2}" 92 CFLAGS="${CFLAGS/${1}/${2} }"
39 CXXFLAGS="${CXXFLAGS/${1}/${2}" 93 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
94}
40 95
96is-flag() {
97 for x in ${CFLAGS} ${CXXFLAGS} ; do
98 if [ "${x}" == "$1" ] ; then
99 echo true
100 return 0
101 fi
102 done
103 return 1
41} 104}
105
106strip-flags() {
107 local NEW_CFLAGS=""
108 local NEW_CXXFLAGS=""
109
110 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
111 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
112 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
113 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
114 fi
115
116 set -f
117
118 for x in ${CFLAGS}
119 do
120 for y in ${ALLOWED_FLAGS}
121 do
122 flag=${x%%=*}
123 if [ "${flag%%${y}}" = "" ]
124 then
125 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
126 break
127 fi
128 done
129 done
130
131 for x in ${CXXFLAGS}
132 do
133 for y in ${ALLOWED_FLAGS}
134 do
135 flag=${x%%=*}
136 if [ "${flag%%${y}}" = "" ]
137 then
138 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
139 break
140 fi
141 done
142 done
143
144 set +f
145
146 [ `use debug` ] \
147 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
148 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
149
150 export CFLAGS="${NEW_CFLAGS}"
151 export CXXFLAGS="${NEW_CXXFLAGS}"
152}
153
154get-flag() {
155 local findflag="$1"
156
157 for f in ${CFLAGS} ${CXXFLAGS} ; do
158 if [ "${f/${findflag}}" != "${f}" ] ; then
159 echo "${f/-${findflag}=}"
160 return
161 fi
162 done
163}
164
165replace-sparc64-flags() {
166 local SPARC64_CPUS="ultrasparc v9"
167
168 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
169 then
170 for x in ${SPARC64_CPUS}
171 do
172 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
173 done
174 else
175 for x in ${SPARC64_CPUS}
176 do
177 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
178 done
179 fi
180
181 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
182 then
183 for x in ${SPARC64_CPUS}
184 do
185 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
186 done
187 else
188 for x in ${SPARC64_CPUS}
189 do
190 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
191 done
192 fi
193}

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