/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.3 Revision 1.22
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 1.22 2003/06/25 19:27:33 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 $ECLASS"
6 9
7# 10#
8#### filter-flags <flag> #### 11#### filter-flags <flags> ####
9# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
10# 14#
11#### append-flags <flag> #### 15#### append-flags <flags> ####
12# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
13# 17#
14#### change-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
15# Replace a flag by another one 19# Replace a flag by another one
20#
21#### is-flag <flag> ####
22# Returns "true" if flag is set in C[XX]FLAGS
23# Matches only complete a flag
24#
25#### strip-flags ####
26# Strip C[XX]FLAGS of everything except known
27# good options.
28#
29#### get-flag <flag> ####
30# Find and echo the value for a particular flag
31#
32#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value
34# as mtune if none specified.
16# 35#
17 36
18 37
19filter-flags () { 38# C[XX]FLAGS that we allow in strip-flags
39ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
40case "${ARCH}" in
41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
42esac
20 43
44# C[XX]FLAGS that we are think is ok, but needs testing
45# NOTE: currently -Os have issues with gcc3 and K6* arch's
46UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
47
48filter-flags() {
49 # we do this fancy spacing stuff so as to not filter
50 # out part of a flag ... we want flag atoms ! :D
51 export CFLAGS=" ${CFLAGS} "
52 export CXXFLAGS=" ${CXXFLAGS} "
21 for x in $1; do 53 for x in $@ ; do
54 export CFLAGS="${CFLAGS/ ${x} / }"
55 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
56 done
57 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
58 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
59}
60
61append-flags() {
22 CFLAGS="${CFLAGS/$x}" 62 CFLAGS="${CFLAGS} $@"
23 CXXFLAGS="${CXXFLAGS/$x}" 63 CXXFLAGS="${CXXFLAGS} $@"
64}
65
66replace-flags() {
67 CFLAGS="${CFLAGS/${1}/${2} }"
68 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
69}
70
71is-flag() {
72 for x in ${CFLAGS} ${CXXFLAGS} ; do
73 if [ "${x}" == "$1" ] ; then
74 echo true
75 return 0
76 fi
77 done
78 return 1
79}
80
81strip-flags() {
82 local NEW_CFLAGS=""
83 local NEW_CXXFLAGS=""
84
85 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
86 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
87 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
88 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
89 fi
90
91 set -f
92
93 for x in ${CFLAGS}
94 do
95 for y in ${ALLOWED_FLAGS}
96 do
97 flag=${x%%=*}
98 if [ "${flag%%${y}}" = "" ]
99 then
100 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
101 break
102 fi
103 done
24 done 104 done
25 105
106 for x in ${CXXFLAGS}
107 do
108 for y in ${ALLOWED_FLAGS}
109 do
110 flag=${x%%=*}
111 if [ "${flag%%${y}}" = "" ]
112 then
113 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
114 break
115 fi
116 done
117 done
118
119 set +f
120
121 [ `use debug` ] \
122 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
123 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
124
125 export CFLAGS="${NEW_CFLAGS}"
126 export CXXFLAGS="${NEW_CXXFLAGS}"
26} 127}
27 128
28append-flags () { 129get-flag() {
130 local findflag="$1"
29 131
30 132 for f in ${CFLAGS} ${CXXFLAGS} ; do
31 CFLAGS="$CFLAGS $1" 133 if [ "${f/${findflag}}" != "${f}" ] ; then
32 CXXFLAGS="$CXXFLAGS $1" 134 echo "${f/-${findflag}=}"
33 135 return
136 fi
137 done
34} 138}
35 139
36change-flags () { 140replace-sparc64-flags() {
141 local SPARC64_CPUS="ultrasparc v9"
37 142
38 CFLAGS="${CFLAGS/${1}/${2}" 143 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
39 CXXFLAGS="${CXXFLAGS/${1}/${2}" 144 then
40 145 for x in ${SPARC64_CPUS}
146 do
147 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
148 done
149 else
150 for x in ${SPARC64_CPUS}
151 do
152 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
153 done
154 fi
155
156 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
157 then
158 for x in ${SPARC64_CPUS}
159 do
160 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
161 done
162 else
163 for x in ${SPARC64_CPUS}
164 do
165 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
166 done
167 fi
41} 168}

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