/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.22 - (show annotations) (download)
Wed Jun 25 19:27:33 2003 UTC (11 years ago) by vapier
Branch: MAIN
Changes since 1.21: +5 -2 lines
ARCH specific support in ALLOWED_FLAGS

1 # Copyright 1999-2003 Gentoo Technologies, Inc.
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.21 2003/06/25 05:56:40 kumba Exp $
4 #
5 # Author Bart Verwilst <verwilst@gentoo.org>
6
7 ECLASS=flag-o-matic
8 INHERITED="$INHERITED $ECLASS"
9
10 #
11 #### filter-flags <flags> ####
12 # Remove particular flags from C[XX]FLAGS
13 # Matches only complete flags
14 #
15 #### append-flags <flags> ####
16 # Add extra flags to your current C[XX]FLAGS
17 #
18 #### replace-flags <orig.flag> <new.flag> ###
19 # Replace a flag by another one
20 #
21 #### is-flag <flag> ####
22 # Returns "true" if flag is set in C[XX]FLAGS
23 # Matches only complete a flag
24 #
25 #### strip-flags ####
26 # Strip C[XX]FLAGS of everything except known
27 # good options.
28 #
29 #### get-flag <flag> ####
30 # Find and echo the value for a particular flag
31 #
32 #### replace-sparc64-flags ####
33 # Sets mcpu to v8 and uses the original value
34 # as mtune if none specified.
35 #
36
37
38 # C[XX]FLAGS that we allow in strip-flags
39 ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
40 case "${ARCH}" in
41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
42 esac
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
46 UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
47
48 filter-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} "
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:${#CXXFLAGS}-2}"
59 }
60
61 append-flags() {
62 CFLAGS="${CFLAGS} $@"
63 CXXFLAGS="${CXXFLAGS} $@"
64 }
65
66 replace-flags() {
67 CFLAGS="${CFLAGS/${1}/${2} }"
68 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
69 }
70
71 is-flag() {
72 for x in ${CFLAGS} ${CXXFLAGS} ; do
73 if [ "${x}" == "$1" ] ; then
74 echo true
75 return 0
76 fi
77 done
78 return 1
79 }
80
81 strip-flags() {
82 local NEW_CFLAGS=""
83 local NEW_CXXFLAGS=""
84
85 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
86 if [ `has ~${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
104 done
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}"
127 }
128
129 get-flag() {
130 local findflag="$1"
131
132 for f in ${CFLAGS} ${CXXFLAGS} ; do
133 if [ "${f/${findflag}}" != "${f}" ] ; then
134 echo "${f/-${findflag}=}"
135 return
136 fi
137 done
138 }
139
140 replace-sparc64-flags() {
141 local SPARC64_CPUS="ultrasparc v9"
142
143 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
144 then
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
168 }

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