/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.12 Revision 1.24
1# Copyright 1999-2003 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 1.12 2003/02/16 04:26:21 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.24 2003/07/22 12:48:11 aliz Exp $
4# 4#
5# Author Bart Verwilst <verwilst@gentoo.org> 5# Author Bart Verwilst <verwilst@gentoo.org>
6 6
7ECLASS=flag-o-matic 7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS" 8INHERITED="$INHERITED $ECLASS"
9 9
10# 10#
11#### filter-flags <flag> #### 11#### filter-flags <flags> ####
12# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
13# 14#
14#### append-flags <flag> #### 15#### append-flags <flags> ####
15# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
16# 17#
17#### replace-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
18# Replace a flag by another one 19# Replace a flag by another one
19# 20#
20#### is-flag <flag> #### 21#### is-flag <flag> ####
21# Returns "true" if flag is set in C[XX]FLAGS 22# Returns "true" if flag is set in C[XX]FLAGS
22# Matches only complete flag 23# Matches only complete a flag
23# 24#
24#### strip-flags #### 25#### strip-flags ####
25# Strip C[XX]FLAGS of everything except known 26# Strip C[XX]FLAGS of everything except known
26# good options. 27# good options.
27# 28#
28#### get-flag <flag> #### 29#### get-flag <flag> ####
29# Find and echo the value for a particular flag 30# Find and echo the value for a particular flag
30# 31#
32#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value
34# as mtune if none specified.
35#
31 36
32filter-flags () {
33 37
34 for x in $1 38# C[XX]FLAGS that we allow in strip-flags
35 do 39ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
36 export CFLAGS="${CFLAGS/${x}}" 40case "${ARCH}" in
37 export CXXFLAGS="${CXXFLAGS/${x}}" 41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
42 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
43esac
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-mfpmath() {
50 for a in $CFLAGS; do
51 if [ "${a:0:8}" == "-mfpmath" ]; then
52 orig_mfpmath=$a
53 fi
38 done 54 done
39 55
56 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
57 for b in $@; do
58 mfpmath="${mfpmath/$b}"
59 done
60
61 if [ -z "${mfpmath/ }" ]; then
62 filter-flags "$orig_mfpmath"
63 else
64 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
65 replace-flags "$orig_mfpmath" "$new_mfpmath"
66 fi
40} 67}
41 68
42append-flags () { 69filter-flags() {
43 70 # we do this fancy spacing stuff so as to not filter
71 # out part of a flag ... we want flag atoms ! :D
44 CFLAGS="${CFLAGS} $1" 72 export CFLAGS=" ${CFLAGS} "
45 CXXFLAGS="${CXXFLAGS} $1" 73 export CXXFLAGS=" ${CXXFLAGS} "
46 74 for x in $@ ; do
75 export CFLAGS="${CFLAGS/ ${x} / }"
76 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
77 done
78 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
79 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
47} 80}
48 81
49replace-flags () { 82append-flags() {
83 CFLAGS="${CFLAGS} $@"
84 CXXFLAGS="${CXXFLAGS} $@"
85}
50 86
87replace-flags() {
51 CFLAGS="${CFLAGS/${1}/${2} }" 88 CFLAGS="${CFLAGS/${1}/${2} }"
52 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 89 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
53
54} 90}
55 91
56is-flag() { 92is-flag() {
57
58 for x in ${CFLAGS} ${CXXFLAGS} 93 for x in ${CFLAGS} ${CXXFLAGS} ; do
59 do
60 if [ "${x}" = "$1" ] 94 if [ "${x}" == "$1" ] ; then
61 then
62 echo true 95 echo true
63 break 96 return 0
64 fi 97 fi
65 done 98 done
66 99 return 1
67} 100}
68 101
69strip-flags() { 102strip-flags() {
70
71 local NEW_CFLAGS="" 103 local NEW_CFLAGS=""
72 local NEW_CXXFLAGS="" 104 local NEW_CXXFLAGS=""
73 105
74 local ALLOWED_FLAGS="-O -mcpu -march -pipe -g" 106 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
107 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
108 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
109 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
110 fi
75 111
76 set -f 112 set -f
77 113
78 for x in ${CFLAGS} 114 for x in ${CFLAGS}
79 do 115 do
80 for y in ${ALLOWED_FLAGS} 116 for y in ${ALLOWED_FLAGS}
81 do 117 do
118 flag=${x%%=*}
82 if [ "${x/${y}}" != "${x}" ] 119 if [ "${flag%%${y}}" = "" ]
83 then 120 then
84 if [ -z "${NEW_CFLAGS}" ]
85 then
86 NEW_CFLAGS="${x}"
87 else
88 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 121 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
89 fi 122 break
90 fi 123 fi
91 done 124 done
92 done 125 done
93 126
94 for x in ${CXXFLAGS} 127 for x in ${CXXFLAGS}
95 do 128 do
96 for y in ${ALLOWED_FLAGS} 129 for y in ${ALLOWED_FLAGS}
97 do 130 do
131 flag=${x%%=*}
98 if [ "${x/${y}}" != "${x}" ] 132 if [ "${flag%%${y}}" = "" ]
99 then 133 then
100 if [ -z "${NEW_CXXFLAGS}" ]
101 then
102 NEW_CXXFLAGS="${x}"
103 else
104 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 134 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
105 fi 135 break
106 fi 136 fi
107 done 137 done
108 done 138 done
109 139
110 set +f 140 set +f
141
142 [ `use debug` ] \
143 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
144 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
111 145
112 export CFLAGS="${NEW_CFLAGS}" 146 export CFLAGS="${NEW_CFLAGS}"
113 export CXXFLAGS="${NEW_CXXFLAGS}" 147 export CXXFLAGS="${NEW_CXXFLAGS}"
114} 148}
115 149
121 echo "${f/-${findflag}=}" 155 echo "${f/-${findflag}=}"
122 return 156 return
123 fi 157 fi
124 done 158 done
125} 159}
160
161replace-sparc64-flags() {
162 local SPARC64_CPUS="ultrasparc v9"
163
164 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
165 then
166 for x in ${SPARC64_CPUS}
167 do
168 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
169 done
170 else
171 for x in ${SPARC64_CPUS}
172 do
173 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
174 done
175 fi
176
177 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
178 then
179 for x in ${SPARC64_CPUS}
180 do
181 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
182 done
183 else
184 for x in ${SPARC64_CPUS}
185 do
186 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
187 done
188 fi
189}

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