/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.11 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# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.11 2002/12/22 12:11:56 cretin Exp $
5 6
6ECLASS=flag-o-matic 7ECLASS=flag-o-matic
7INHERITED="$INHERITED $ECLASS" 8INHERITED="$INHERITED $ECLASS"
8 9
9# 10#
10#### filter-flags <flag> #### 11#### filter-flags <flags> ####
11# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
12# 14#
13#### append-flags <flag> #### 15#### append-flags <flags> ####
14# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
15# 17#
16#### replace-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
17# Replace a flag by another one 19# Replace a flag by another one
18# 20#
19#### is-flag <flag> #### 21#### is-flag <flag> ####
20# Returns "true" if flag is set in C[XX]FLAGS 22# Returns "true" if flag is set in C[XX]FLAGS
21# Matches only complete flag 23# Matches only complete a flag
22# 24#
23#### strip-flags #### 25#### strip-flags ####
24# Strip C[XX]FLAGS of everything except known 26# Strip C[XX]FLAGS of everything except known
25# good options. 27# good options.
26# 28#
27#### get-flag <flag> #### 29#### get-flag <flag> ####
28# Find and echo the value for a particular flag 30# Find and echo the value for a particular flag
29# 31#
32#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value
34# as mtune if none specified.
35#
30 36
31filter-flags () {
32 37
38# C[XX]FLAGS that we allow in strip-flags
39ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
40case "${ARCH}" in
41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
42 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
43esac
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} "
33 for x in $1 54 for x in $@ ; do
34 do
35 export CFLAGS="${CFLAGS/${x}}" 55 export CFLAGS="${CFLAGS/ ${x} / }"
36 export CXXFLAGS="${CXXFLAGS/${x}}" 56 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
37 done 57 done
38 58 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
59 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
39} 60}
40 61
41append-flags () { 62append-flags() {
42
43 CFLAGS="${CFLAGS} $1" 63 CFLAGS="${CFLAGS} $@"
44 CXXFLAGS="${CXXFLAGS} $1" 64 CXXFLAGS="${CXXFLAGS} $@"
45
46} 65}
47 66
48replace-flags () { 67replace-flags() {
49
50 CFLAGS="${CFLAGS/${1}/${2} }" 68 CFLAGS="${CFLAGS/${1}/${2} }"
51 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 69 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
52
53} 70}
54 71
55is-flag() { 72is-flag() {
56
57 for x in ${CFLAGS} ${CXXFLAGS} 73 for x in ${CFLAGS} ${CXXFLAGS} ; do
58 do
59 if [ "${x}" = "$1" ] 74 if [ "${x}" == "$1" ] ; then
60 then
61 echo true 75 echo true
62 break 76 return 0
63 fi 77 fi
64 done 78 done
65 79 return 1
66} 80}
67 81
68strip-flags() { 82strip-flags() {
69
70 local NEW_CFLAGS="" 83 local NEW_CFLAGS=""
71 local NEW_CXXFLAGS="" 84 local NEW_CXXFLAGS=""
72 85
73 local ALLOWED_FLAGS="-O -mcpu -march -pipe -g" 86 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
87 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
88 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
89 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
90 fi
74 91
75 set -f 92 set -f
76 93
77 for x in ${CFLAGS} 94 for x in ${CFLAGS}
78 do 95 do
79 for y in ${ALLOWED_FLAGS} 96 for y in ${ALLOWED_FLAGS}
80 do 97 do
98 flag=${x%%=*}
81 if [ "${x/${y}}" != "${x}" ] 99 if [ "${flag%%${y}}" = "" ]
82 then 100 then
83 if [ -z "${NEW_CFLAGS}" ]
84 then
85 NEW_CFLAGS="${x}"
86 else
87 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 101 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
88 fi 102 break
89 fi 103 fi
90 done 104 done
91 done 105 done
92 106
93 for x in ${CXXFLAGS} 107 for x in ${CXXFLAGS}
94 do 108 do
95 for y in ${ALLOWED_FLAGS} 109 for y in ${ALLOWED_FLAGS}
96 do 110 do
111 flag=${x%%=*}
97 if [ "${x/${y}}" != "${x}" ] 112 if [ "${flag%%${y}}" = "" ]
98 then 113 then
99 if [ -z "${NEW_CXXFLAGS}" ]
100 then
101 NEW_CXXFLAGS="${x}"
102 else
103 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 114 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
104 fi 115 break
105 fi 116 fi
106 done 117 done
107 done 118 done
108 119
109 set +f 120 set +f
121
122 [ `use debug` ] \
123 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
124 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
110 125
111 export CFLAGS="${NEW_CFLAGS}" 126 export CFLAGS="${NEW_CFLAGS}"
112 export CXXFLAGS="${NEW_CXXFLAGS}" 127 export CXXFLAGS="${NEW_CXXFLAGS}"
113} 128}
114 129
120 echo "${f/-${findflag}=}" 135 echo "${f/-${findflag}=}"
121 return 136 return
122 fi 137 fi
123 done 138 done
124} 139}
140
141replace-sparc64-flags() {
142 local SPARC64_CPUS="ultrasparc v9"
143
144 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
145 then
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
169}

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