/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.21 - (show annotations) (download)
Wed Jun 25 05:56:40 2003 UTC (11 years, 2 months ago) by kumba
Branch: MAIN
Changes since 1.20: +2 -2 lines

Added 5 MIPS-specific flags to ALLOWED_FLAGS.  -mips[1-4] specifies the
ISA Level while -mabi specifies which MIPS ABI to use.

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 1.20 2003/06/25 03:27:43 vapier 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 -mips1 -mips2 -mips3 -mips4 -mabi"
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} $@"
60 CXXFLAGS="${CXXFLAGS} $@"
61 }
62
63 replace-flags() {
64 CFLAGS="${CFLAGS/${1}/${2} }"
65 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
66 }
67
68 is-flag() {
69 for x in ${CFLAGS} ${CXXFLAGS} ; do
70 if [ "${x}" == "$1" ] ; then
71 echo true
72 return 0
73 fi
74 done
75 return 1
76 }
77
78 strip-flags() {
79 local NEW_CFLAGS=""
80 local NEW_CXXFLAGS=""
81
82 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
83 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
84 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
85 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
86 fi
87
88 set -f
89
90 for x in ${CFLAGS}
91 do
92 for y in ${ALLOWED_FLAGS}
93 do
94 flag=${x%%=*}
95 if [ "${flag%%${y}}" = "" ]
96 then
97 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
98 break
99 fi
100 done
101 done
102
103 for x in ${CXXFLAGS}
104 do
105 for y in ${ALLOWED_FLAGS}
106 do
107 flag=${x%%=*}
108 if [ "${flag%%${y}}" = "" ]
109 then
110 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
111 break
112 fi
113 done
114 done
115
116 set +f
117
118 [ `use debug` ] \
119 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
120 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
121
122 export CFLAGS="${NEW_CFLAGS}"
123 export CXXFLAGS="${NEW_CXXFLAGS}"
124 }
125
126 get-flag() {
127 local findflag="$1"
128
129 for f in ${CFLAGS} ${CXXFLAGS} ; do
130 if [ "${f/${findflag}}" != "${f}" ] ; then
131 echo "${f/-${findflag}=}"
132 return
133 fi
134 done
135 }
136
137 replace-sparc64-flags() {
138 local SPARC64_CPUS="ultrasparc v9"
139
140 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
141 then
142 for x in ${SPARC64_CPUS}
143 do
144 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
145 done
146 else
147 for x in ${SPARC64_CPUS}
148 do
149 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
150 done
151 fi
152
153 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
154 then
155 for x in ${SPARC64_CPUS}
156 do
157 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
158 done
159 else
160 for x in ${SPARC64_CPUS}
161 do
162 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
163 done
164 fi
165 }

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