/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.18 - (show annotations) (download)
Tue Jun 17 14:38:32 2003 UTC (11 years, 3 months ago) by vapier
Branch: MAIN
Changes since 1.17: +23 -29 lines
filter-flag = atomic + handle more 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 1.17 2003/04/27 20:57:46 azarah 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
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
43 UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
44
45 filter-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} "
50 for x in $@ ; do
51 export CFLAGS="${CFLAGS/ ${x} / }"
52 export CXXFLAGS="${CXXFLAGS/ ${x} / }"
53 done
54 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
55 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
56 }
57
58 append-flags() {
59 CFLAGS="${CFLAGS} $1"
60 CXXFLAGS="${CXXFLAGS} $1"
61 }
62
63 replace-flags() {
64 CFLAGS="${CFLAGS/${1}/${2} }"
65 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
66 }
67
68 is-flag() {
69 for x in ${CFLAGS} ${CXXFLAGS} ; do
70 if [ "${x}" == "$1" ] ; then
71 echo true
72 return 0
73 fi
74 done
75 return 1
76 }
77
78 strip-flags() {
79 local NEW_CFLAGS=""
80 local NEW_CXXFLAGS=""
81
82 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
83 if [ "${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
93
94 set -f
95
96 for x in ${CFLAGS}
97 do
98 for y in ${ALLOWED_FLAGS}
99 do
100 flag=${x%%=*}
101 if [ "${flag%%${y}}" = "" ]
102 then
103 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
104 break
105 fi
106 done
107 done
108
109 for x in ${CXXFLAGS}
110 do
111 for y in ${ALLOWED_FLAGS}
112 do
113 flag=${x%%=*}
114 if [ "${flag%%${y}}" = "" ]
115 then
116 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
117 break
118 fi
119 done
120 done
121
122 set +f
123
124 use debug &>/dev/null && einfo "CFLAGS=\"${NEW_CFLAGS}\""
125 use debug &>/dev/null && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
126
127 export CFLAGS="${NEW_CFLAGS}"
128 export CXXFLAGS="${NEW_CXXFLAGS}"
129 }
130
131 get-flag() {
132 local findflag="$1"
133
134 for f in ${CFLAGS} ${CXXFLAGS} ; do
135 if [ "${f/${findflag}}" != "${f}" ] ; then
136 echo "${f/-${findflag}=}"
137 return
138 fi
139 done
140 }
141
142 replace-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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