/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.11 Revision 1.19
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 1.19 2003/06/19 13:23:41 vapier 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"
40
41# C[XX]FLAGS that we are think is ok, but needs testing
42# NOTE: currently -Os have issues with gcc3 and K6* arch's
43UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
44
45filter-flags() {
46 # we do this fancy spacing stuff so as to not filter
47 # out part of a flag ... we want flag atoms ! :D
48 export CFLAGS=" ${CFLAGS} "
49 export CXXFLAGS=" ${CXXFLAGS} "
33 for x in $1 50 for x in $@ ; do
34 do
35 export CFLAGS="${CFLAGS/${x}}" 51 export CFLAGS="${CFLAGS/ ${x} / }"
36 export CXXFLAGS="${CXXFLAGS/${x}}" 52 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
37 done 53 done
38 54 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
55 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
39} 56}
40 57
41append-flags () { 58append-flags() {
42
43 CFLAGS="${CFLAGS} $1" 59 CFLAGS="${CFLAGS} $@"
44 CXXFLAGS="${CXXFLAGS} $1" 60 CXXFLAGS="${CXXFLAGS} $@"
45
46} 61}
47 62
48replace-flags () { 63replace-flags() {
49
50 CFLAGS="${CFLAGS/${1}/${2} }" 64 CFLAGS="${CFLAGS/${1}/${2} }"
51 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 65 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
52
53} 66}
54 67
55is-flag() { 68is-flag() {
56
57 for x in ${CFLAGS} ${CXXFLAGS} 69 for x in ${CFLAGS} ${CXXFLAGS} ; do
58 do
59 if [ "${x}" = "$1" ] 70 if [ "${x}" == "$1" ] ; then
60 then
61 echo true 71 echo true
62 break 72 return 0
63 fi 73 fi
64 done 74 done
65 75 return 1
66} 76}
67 77
68strip-flags() { 78strip-flags() {
69
70 local NEW_CFLAGS="" 79 local NEW_CFLAGS=""
71 local NEW_CXXFLAGS="" 80 local NEW_CXXFLAGS=""
72 81
73 local ALLOWED_FLAGS="-O -mcpu -march -pipe -g" 82 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
83 if [ "${ACCEPT_KEYWORDS/~/}" != "${ACCEPT_KEYWORDS}" -a \
84 "${ACCEPT_KEYWORDS/-~/}" = "${ACCEPT_KEYWORDS}" ]
85 then
86 if use debug &> /dev/null
87 then
88 einfo "Enabling the use of some unstable flags"
89 fi
90
91 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
92 fi
74 93
75 set -f 94 set -f
76 95
77 for x in ${CFLAGS} 96 for x in ${CFLAGS}
78 do 97 do
79 for y in ${ALLOWED_FLAGS} 98 for y in ${ALLOWED_FLAGS}
80 do 99 do
100 flag=${x%%=*}
81 if [ "${x/${y}}" != "${x}" ] 101 if [ "${flag%%${y}}" = "" ]
82 then 102 then
83 if [ -z "${NEW_CFLAGS}" ]
84 then
85 NEW_CFLAGS="${x}"
86 else
87 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 103 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
88 fi 104 break
89 fi 105 fi
90 done 106 done
91 done 107 done
92 108
93 for x in ${CXXFLAGS} 109 for x in ${CXXFLAGS}
94 do 110 do
95 for y in ${ALLOWED_FLAGS} 111 for y in ${ALLOWED_FLAGS}
96 do 112 do
113 flag=${x%%=*}
97 if [ "${x/${y}}" != "${x}" ] 114 if [ "${flag%%${y}}" = "" ]
98 then 115 then
99 if [ -z "${NEW_CXXFLAGS}" ]
100 then
101 NEW_CXXFLAGS="${x}"
102 else
103 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 116 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
104 fi 117 break
105 fi 118 fi
106 done 119 done
107 done 120 done
108 121
109 set +f 122 set +f
110 123
124 use debug &>/dev/null && einfo "CFLAGS=\"${NEW_CFLAGS}\""
125 use debug &>/dev/null && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
126
111 export CFLAGS="${NEW_CFLAGS}" 127 export CFLAGS="${NEW_CFLAGS}"
112 export CXXFLAGS="${NEW_CXXFLAGS}" 128 export CXXFLAGS="${NEW_CXXFLAGS}"
113} 129}
114 130
115get-flag() { 131get-flag() {
120 echo "${f/-${findflag}=}" 136 echo "${f/-${findflag}=}"
121 return 137 return
122 fi 138 fi
123 done 139 done
124} 140}
141
142replace-sparc64-flags() {
143 local SPARC64_CPUS="ultrasparc v9"
144
145 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
146 then
147 for x in ${SPARC64_CPUS}
148 do
149 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
150 done
151 else
152 for x in ${SPARC64_CPUS}
153 do
154 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
155 done
156 fi
157
158 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
159 then
160 for x in ${SPARC64_CPUS}
161 do
162 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
163 done
164 else
165 for x in ${SPARC64_CPUS}
166 do
167 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
168 done
169 fi
170}

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