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Revision 1.24 - (hide annotations) (download)
Tue Jul 22 12:48:11 2003 UTC (11 years, 5 months ago) by aliz
Branch: MAIN
Branch point for: RELEASE-1_4
Changes since 1.23: +21 -1 lines
added filter-mfpmath function

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 aliz 1.24 # $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.23 2003/07/18 20:11:22 tester 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 $ECLASS"
9 azarah 1.8
10 verwilst 1.2 #
11 vapier 1.18 #### filter-flags <flags> ####
12 verwilst 1.3 # Remove particular flags from C[XX]FLAGS
13 vapier 1.18 # Matches only complete flags
14 verwilst 1.2 #
15 vapier 1.18 #### append-flags <flags> ####
16 verwilst 1.3 # Add extra flags to your current C[XX]FLAGS
17     #
18 verwilst 1.4 #### replace-flags <orig.flag> <new.flag> ###
19 verwilst 1.3 # Replace a flag by another one
20     #
21 danarmak 1.7 #### is-flag <flag> ####
22     # Returns "true" if flag is set in C[XX]FLAGS
23 vapier 1.18 # Matches only complete a flag
24 danarmak 1.7 #
25 azarah 1.8 #### strip-flags ####
26     # Strip C[XX]FLAGS of everything except known
27     # good options.
28     #
29 vapier 1.10 #### get-flag <flag> ####
30     # Find and echo the value for a particular flag
31     #
32 joker 1.16 #### replace-sparc64-flags ####
33     # Sets mcpu to v8 and uses the original value
34     # as mtune if none specified.
35     #
36    
37 verwilst 1.3
38 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
39 vapier 1.22 ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
40     case "${ARCH}" in
41     mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
42 tester 1.23 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
43 vapier 1.22 esac
44 verwilst 1.13
45 azarah 1.17 # C[XX]FLAGS that we are think is ok, but needs testing
46     # NOTE: currently -Os have issues with gcc3 and K6* arch's
47     UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
48 aliz 1.24
49     filter-mfpmath() {
50     for a in $CFLAGS; do
51     if [ "${a:0:8}" == "-mfpmath" ]; then
52     orig_mfpmath=$a
53     fi
54     done
55    
56     mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
57     for b in $@; do
58     mfpmath="${mfpmath/$b}"
59     done
60    
61     if [ -z "${mfpmath/ }" ]; then
62     filter-flags "$orig_mfpmath"
63     else
64     new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
65     replace-flags "$orig_mfpmath" "$new_mfpmath"
66     fi
67     }
68 verwilst 1.13
69 vapier 1.18 filter-flags() {
70     # we do this fancy spacing stuff so as to not filter
71     # out part of a flag ... we want flag atoms ! :D
72     export CFLAGS=" ${CFLAGS} "
73     export CXXFLAGS=" ${CXXFLAGS} "
74     for x in $@ ; do
75     export CFLAGS="${CFLAGS/ ${x} / }"
76     export CXXFLAGS="${CXXFLAGS/ ${x} / }"
77 verwilst 1.1 done
78 vapier 1.18 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
79     export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
80 verwilst 1.2 }
81    
82 vapier 1.18 append-flags() {
83 vapier 1.19 CFLAGS="${CFLAGS} $@"
84     CXXFLAGS="${CXXFLAGS} $@"
85 verwilst 1.1 }
86    
87 vapier 1.18 replace-flags() {
88 seemant 1.9 CFLAGS="${CFLAGS/${1}/${2} }"
89     CXXFLAGS="${CXXFLAGS/${1}/${2} }"
90 danarmak 1.7 }
91    
92     is-flag() {
93 vapier 1.18 for x in ${CFLAGS} ${CXXFLAGS} ; do
94     if [ "${x}" == "$1" ] ; then
95 azarah 1.8 echo true
96 vapier 1.18 return 0
97     fi
98 danarmak 1.7 done
99 vapier 1.18 return 1
100 verwilst 1.1 }
101 azarah 1.8
102     strip-flags() {
103     local NEW_CFLAGS=""
104     local NEW_CXXFLAGS=""
105    
106 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
107 vapier 1.20 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
108     [ `use debug` ] && einfo "Enabling the use of some unstable flags"
109 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
110     fi
111    
112 azarah 1.8 set -f
113    
114     for x in ${CFLAGS}
115     do
116     for y in ${ALLOWED_FLAGS}
117     do
118 lostlogic 1.14 flag=${x%%=*}
119     if [ "${flag%%${y}}" = "" ]
120 azarah 1.8 then
121 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
122     break
123 azarah 1.8 fi
124     done
125     done
126    
127     for x in ${CXXFLAGS}
128     do
129     for y in ${ALLOWED_FLAGS}
130     do
131 lostlogic 1.14 flag=${x%%=*}
132     if [ "${flag%%${y}}" = "" ]
133 azarah 1.8 then
134 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
135     break
136 azarah 1.8 fi
137     done
138     done
139    
140     set +f
141    
142 vapier 1.20 [ `use debug` ] \
143     && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
144     && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
145    
146 azarah 1.8 export CFLAGS="${NEW_CFLAGS}"
147     export CXXFLAGS="${NEW_CXXFLAGS}"
148     }
149    
150 vapier 1.10 get-flag() {
151     local findflag="$1"
152    
153     for f in ${CFLAGS} ${CXXFLAGS} ; do
154     if [ "${f/${findflag}}" != "${f}" ] ; then
155     echo "${f/-${findflag}=}"
156     return
157     fi
158     done
159 joker 1.16 }
160    
161 vapier 1.18 replace-sparc64-flags() {
162 joker 1.16 local SPARC64_CPUS="ultrasparc v9"
163    
164     if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
165     then
166     for x in ${SPARC64_CPUS}
167     do
168     CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
169     done
170     else
171     for x in ${SPARC64_CPUS}
172     do
173     CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
174     done
175     fi
176    
177     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
178     then
179     for x in ${SPARC64_CPUS}
180     do
181     CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
182     done
183     else
184     for x in ${SPARC64_CPUS}
185     do
186     CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
187     done
188     fi
189 vapier 1.10 }

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