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Revision 1.26 - (hide annotations) (download)
Mon Sep 15 15:21:04 2003 UTC (11 years, 3 months ago) by vapier
Branch: MAIN
Changes since 1.25: +5 -2 lines
add explanation of filter mfpmath

1 vapier 1.12 # Copyright 1999-2003 Gentoo Technologies, Inc.
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.26 # $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.25 2003/08/20 04:11:27 agriffis Exp $
4 vapier 1.12 #
5 verwilst 1.1 # Author Bart Verwilst <verwilst@gentoo.org>
6 azarah 1.8
7 verwilst 1.1 ECLASS=flag-o-matic
8 danarmak 1.6 INHERITED="$INHERITED $ECLASS"
9 azarah 1.8
10 verwilst 1.2 #
11 vapier 1.18 #### filter-flags <flags> ####
12 verwilst 1.3 # Remove particular flags from C[XX]FLAGS
13 vapier 1.18 # Matches only complete flags
14 verwilst 1.2 #
15 vapier 1.18 #### append-flags <flags> ####
16 verwilst 1.3 # Add extra flags to your current C[XX]FLAGS
17     #
18 verwilst 1.4 #### replace-flags <orig.flag> <new.flag> ###
19 verwilst 1.3 # Replace a flag by another one
20     #
21 danarmak 1.7 #### is-flag <flag> ####
22     # Returns "true" if flag is set in C[XX]FLAGS
23 vapier 1.18 # Matches only complete a flag
24 danarmak 1.7 #
25 azarah 1.8 #### strip-flags ####
26     # Strip C[XX]FLAGS of everything except known
27     # good options.
28     #
29 vapier 1.10 #### get-flag <flag> ####
30     # Find and echo the value for a particular flag
31     #
32 joker 1.16 #### replace-sparc64-flags ####
33     # Sets mcpu to v8 and uses the original value
34     # as mtune if none specified.
35     #
36 vapier 1.26 #### filter-mfpmath <math types> ####
37     # Remove specified math types from the fpmath specification
38     # If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
39     # will leave the user with -mfpmath=386
40 verwilst 1.3
41 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
42 vapier 1.22 ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
43     case "${ARCH}" in
44     mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
45 tester 1.23 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
46 agriffis 1.25 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
47 vapier 1.22 esac
48 verwilst 1.13
49 azarah 1.17 # C[XX]FLAGS that we are think is ok, but needs testing
50     # NOTE: currently -Os have issues with gcc3 and K6* arch's
51     UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
52 aliz 1.24
53     filter-mfpmath() {
54     for a in $CFLAGS; do
55     if [ "${a:0:8}" == "-mfpmath" ]; then
56     orig_mfpmath=$a
57     fi
58     done
59    
60     mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
61     for b in $@; do
62     mfpmath="${mfpmath/$b}"
63     done
64    
65     if [ -z "${mfpmath/ }" ]; then
66     filter-flags "$orig_mfpmath"
67     else
68     new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
69     replace-flags "$orig_mfpmath" "$new_mfpmath"
70     fi
71     }
72 verwilst 1.13
73 vapier 1.18 filter-flags() {
74     # we do this fancy spacing stuff so as to not filter
75     # out part of a flag ... we want flag atoms ! :D
76 agriffis 1.25 CFLAGS=" ${CFLAGS} "
77     CXXFLAGS=" ${CXXFLAGS} "
78 vapier 1.18 for x in $@ ; do
79 agriffis 1.25 CFLAGS="${CFLAGS/ ${x} / }"
80     CXXFLAGS="${CXXFLAGS/ ${x} / }"
81 verwilst 1.1 done
82 agriffis 1.25 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
83     CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
84 verwilst 1.2 }
85    
86 vapier 1.18 append-flags() {
87 vapier 1.19 CFLAGS="${CFLAGS} $@"
88     CXXFLAGS="${CXXFLAGS} $@"
89 verwilst 1.1 }
90    
91 vapier 1.18 replace-flags() {
92 seemant 1.9 CFLAGS="${CFLAGS/${1}/${2} }"
93     CXXFLAGS="${CXXFLAGS/${1}/${2} }"
94 danarmak 1.7 }
95    
96     is-flag() {
97 vapier 1.18 for x in ${CFLAGS} ${CXXFLAGS} ; do
98     if [ "${x}" == "$1" ] ; then
99 azarah 1.8 echo true
100 vapier 1.18 return 0
101     fi
102 danarmak 1.7 done
103 vapier 1.18 return 1
104 verwilst 1.1 }
105 azarah 1.8
106     strip-flags() {
107     local NEW_CFLAGS=""
108     local NEW_CXXFLAGS=""
109    
110 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
111 vapier 1.20 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
112     [ `use debug` ] && einfo "Enabling the use of some unstable flags"
113 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
114     fi
115    
116 azarah 1.8 set -f
117    
118     for x in ${CFLAGS}
119     do
120     for y in ${ALLOWED_FLAGS}
121     do
122 lostlogic 1.14 flag=${x%%=*}
123     if [ "${flag%%${y}}" = "" ]
124 azarah 1.8 then
125 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
126     break
127 azarah 1.8 fi
128     done
129     done
130    
131     for x in ${CXXFLAGS}
132     do
133     for y in ${ALLOWED_FLAGS}
134     do
135 lostlogic 1.14 flag=${x%%=*}
136     if [ "${flag%%${y}}" = "" ]
137 azarah 1.8 then
138 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
139     break
140 azarah 1.8 fi
141     done
142     done
143    
144     set +f
145    
146 vapier 1.20 [ `use debug` ] \
147     && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
148     && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
149    
150 azarah 1.8 export CFLAGS="${NEW_CFLAGS}"
151     export CXXFLAGS="${NEW_CXXFLAGS}"
152     }
153    
154 vapier 1.10 get-flag() {
155     local findflag="$1"
156    
157     for f in ${CFLAGS} ${CXXFLAGS} ; do
158     if [ "${f/${findflag}}" != "${f}" ] ; then
159     echo "${f/-${findflag}=}"
160     return
161     fi
162     done
163 joker 1.16 }
164    
165 vapier 1.18 replace-sparc64-flags() {
166 joker 1.16 local SPARC64_CPUS="ultrasparc v9"
167    
168     if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
169     then
170     for x in ${SPARC64_CPUS}
171     do
172     CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
173     done
174     else
175     for x in ${SPARC64_CPUS}
176     do
177     CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
178     done
179     fi
180    
181     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
182     then
183     for x in ${SPARC64_CPUS}
184     do
185     CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
186     done
187     else
188     for x in ${SPARC64_CPUS}
189     do
190     CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
191     done
192     fi
193 vapier 1.10 }

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