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Revision 1.38 - (hide annotations) (download)
Thu Feb 26 06:47:23 2004 UTC (10 years, 8 months ago) by vapier
Branch: MAIN
Changes since 1.37: +2 -1 lines
include -mtune in the list

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 1.38 # $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.37 2004/02/21 07:19:29 vapier 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 vapier 1.37 #### replace-cpu-flags <new.cpu> <old.cpus> ###
22     # Replace march/mcpu flags that specify <old.cpus>
23     # with flags that specify <new.cpu>
24     #
25 danarmak 1.7 #### is-flag <flag> ####
26     # Returns "true" if flag is set in C[XX]FLAGS
27 vapier 1.18 # Matches only complete a flag
28 danarmak 1.7 #
29 azarah 1.8 #### strip-flags ####
30     # Strip C[XX]FLAGS of everything except known
31     # good options.
32     #
33 puggy 1.29 #### strip-unsupported-flags ####
34     # Strip C[XX]FLAGS of any flags not supported by
35     # installed version of gcc
36     #
37 vapier 1.10 #### get-flag <flag> ####
38     # Find and echo the value for a particular flag
39     #
40 joker 1.16 #### replace-sparc64-flags ####
41     # Sets mcpu to v8 and uses the original value
42     # as mtune if none specified.
43     #
44 vapier 1.26 #### filter-mfpmath <math types> ####
45     # Remove specified math types from the fpmath specification
46     # If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
47     # will leave the user with -mfpmath=386
48 solar 1.27 #
49     #### append-ldflags ####
50     # Add extra flags to your current LDFLAGS
51     #
52     #### etexec-flags ####
53     # hooked function for hardened-gcc that appends
54     # -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed
55 solar 1.32 # and a package is filtering -fPIC,-fpic, -fPIE, -fpie
56 solar 1.27 #
57     #### fstack-flags ####
58     # hooked function for hardened-gcc that appends
59     # -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed
60 solar 1.32 # and a package is filtering -fstack-protector, -fstack-protector-all
61 solar 1.27 #
62 verwilst 1.3
63 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
64 vapier 1.36 setup-allowed-flags() {
65     export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
66     case "${ARCH}" in
67     mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
68     amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
69     alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
70     ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
71     esac
72    
73     # C[XX]FLAGS that we are think is ok, but needs testing
74     # NOTE: currently -Os have issues with gcc3 and K6* arch's
75     export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76     return 0
77 aliz 1.24 }
78 verwilst 1.13
79 vapier 1.18 filter-flags() {
80 vapier 1.36 for x in "$@" ; do
81 solar 1.27 case "${x}" in
82 solar 1.32 -fPIC|-fpic|-fPIE|-fpie) etexec-flags;;
83     -fstack-protector|-fstack-protector-all) fstack-flags;;
84 solar 1.27 *) ;;
85     esac
86     done
87 vapier 1.36
88 vapier 1.18 # we do this fancy spacing stuff so as to not filter
89     # out part of a flag ... we want flag atoms ! :D
90 agriffis 1.25 CFLAGS=" ${CFLAGS} "
91     CXXFLAGS=" ${CXXFLAGS} "
92 vapier 1.36 for x in "$@" ; do
93 vapier 1.37 CFLAGS="${CFLAGS// ${x} / }"
94     CXXFLAGS="${CXXFLAGS// ${x} / }"
95 verwilst 1.1 done
96 agriffis 1.25 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
97     CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
98 vapier 1.36 return 0
99 verwilst 1.2 }
100    
101 vapier 1.18 append-flags() {
102 vapier 1.36 export CFLAGS="${CFLAGS} $@"
103     export CXXFLAGS="${CXXFLAGS} $@"
104 vapier 1.33 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags
105 vapier 1.28 return 0
106 verwilst 1.1 }
107    
108 vapier 1.18 replace-flags() {
109 vapier 1.36 # we do this fancy spacing stuff so as to not filter
110     # out part of a flag ... we want flag atoms ! :D
111     CFLAGS=" ${CFLAGS} "
112     CXXFLAGS=" ${CXXFLAGS} "
113 vapier 1.37 CFLAGS="${CFLAGS// ${1} / ${2} }"
114     CXXFLAGS="${CXXFLAGS// ${1} / ${2} }"
115 vapier 1.36 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
116     CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
117 vapier 1.28 return 0
118 danarmak 1.7 }
119    
120 vapier 1.37 replace-cpu-flags() {
121     local newcpu="$1" ; shift
122     local oldcpu=""
123     for oldcpu in "$@" ; do
124     replace-flags -march=${oldcpu} -march=${newcpu}
125     replace-flags -mcpu=${oldcpu} -mcpu=${newcpu}
126 vapier 1.38 replace-flags -mtune=${oldcpu} -mtune=${newcpu}
127 vapier 1.37 done
128     return 0
129     }
130    
131 danarmak 1.7 is-flag() {
132 vapier 1.18 for x in ${CFLAGS} ${CXXFLAGS} ; do
133     if [ "${x}" == "$1" ] ; then
134 azarah 1.8 echo true
135 vapier 1.18 return 0
136     fi
137 danarmak 1.7 done
138 vapier 1.18 return 1
139 verwilst 1.1 }
140 azarah 1.8
141 vapier 1.36 filter-mfpmath() {
142     # save the original -mfpmath flag
143     local orig_mfpmath="`get-flag -mfpmath`"
144     # get the value of the current -mfpmath flag
145     local new_math=" `get-flag mfpmath | tr , ' '` "
146     # figure out which math values are to be removed
147     local prune_math=""
148     for prune_math in "$@" ; do
149     new_math="${new_math/ ${prune_math} / }"
150     done
151     new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
152    
153     if [ -z "${new_math}" ] ; then
154     # if we're removing all user specified math values are
155     # slated for removal, then we just filter the flag
156     filter-flags ${orig_mfpmath}
157     else
158     # if we only want to filter some of the user specified
159     # math values, then we replace the current flag
160     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
161     fi
162     return 0
163     }
164    
165 azarah 1.8 strip-flags() {
166 vapier 1.36 setup-allowed-flags
167    
168 azarah 1.8 local NEW_CFLAGS=""
169     local NEW_CXXFLAGS=""
170    
171 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
172 vapier 1.20 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
173     [ `use debug` ] && einfo "Enabling the use of some unstable flags"
174 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
175     fi
176    
177 azarah 1.8 set -f
178    
179     for x in ${CFLAGS}
180     do
181     for y in ${ALLOWED_FLAGS}
182     do
183 lostlogic 1.14 flag=${x%%=*}
184     if [ "${flag%%${y}}" = "" ]
185 azarah 1.8 then
186 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
187     break
188 azarah 1.8 fi
189     done
190     done
191    
192     for x in ${CXXFLAGS}
193     do
194     for y in ${ALLOWED_FLAGS}
195     do
196 lostlogic 1.14 flag=${x%%=*}
197     if [ "${flag%%${y}}" = "" ]
198 azarah 1.8 then
199 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
200     break
201 azarah 1.8 fi
202     done
203     done
204 azarah 1.30
205     # In case we filtered out all optimization flags fallback to -O2
206     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
207     NEW_CFLAGS="${NEW_CFLAGS} -O2"
208     fi
209     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
210     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
211     fi
212 azarah 1.8
213     set +f
214    
215 vapier 1.20 [ `use debug` ] \
216     && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
217     && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
218    
219 azarah 1.8 export CFLAGS="${NEW_CFLAGS}"
220     export CXXFLAGS="${NEW_CXXFLAGS}"
221 vapier 1.36 return 0
222 puggy 1.29 }
223    
224 vapier 1.36 test_flag() {
225     if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then
226     echo "$@"
227     return 0
228 puggy 1.29 fi
229 vapier 1.36 return 1
230 puggy 1.29 }
231    
232     strip-unsupported-flags() {
233 vapier 1.36 for x in ${CFLAGS} ; do
234 puggy 1.29 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`"
235     done
236 vapier 1.36 for x in ${CXXFLAGS} ; do
237 puggy 1.29 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`"
238     done
239    
240 vapier 1.36 export CFLAGS="${NEW_CFLAGS}"
241     export CXXFLAGS="${NEW_CXXFLAGS}"
242 azarah 1.8 }
243    
244 vapier 1.10 get-flag() {
245 vapier 1.36 # this code looks a little flaky but seems to work for
246     # everything we want ...
247     # for example, if CFLAGS="-march=i686":
248     # `get-flags -march` == "-march=i686"
249     # `get-flags march` == "i686"
250 vapier 1.10 local findflag="$1"
251     for f in ${CFLAGS} ${CXXFLAGS} ; do
252     if [ "${f/${findflag}}" != "${f}" ] ; then
253     echo "${f/-${findflag}=}"
254 vapier 1.28 return 0
255 vapier 1.10 fi
256     done
257 vapier 1.28 return 1
258 joker 1.16 }
259    
260 vapier 1.18 replace-sparc64-flags() {
261 joker 1.16 local SPARC64_CPUS="ultrasparc v9"
262    
263     if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
264     then
265     for x in ${SPARC64_CPUS}
266     do
267     CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
268     done
269     else
270     for x in ${SPARC64_CPUS}
271     do
272     CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
273     done
274     fi
275    
276     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
277     then
278     for x in ${SPARC64_CPUS}
279     do
280     CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
281     done
282     else
283     for x in ${SPARC64_CPUS}
284     do
285     CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
286     done
287     fi
288 solar 1.27 }
289    
290     append-ldflags() {
291     LDFLAGS="${LDFLAGS} $@"
292 vapier 1.28 return 0
293 solar 1.27 }
294    
295 vapier 1.36 etexec-flags() {
296 solar 1.35 has_version sys-devel/hardened-gcc
297 vapier 1.36 if [ $? == 0 ] ; then
298 solar 1.35 if [ "`is-flag -yet_exec`" != "true" ]; then
299 vapier 1.36 debug-print ">>> appending flags -yet_exec"
300 solar 1.34 append-flags -yet_exec
301     append-ldflags -yet_exec
302     fi
303 solar 1.35 fi
304 solar 1.27 }
305    
306     fstack-flags() {
307 solar 1.35 has_version sys-devel/hardened-gcc
308 vapier 1.36 if [ $? == 0 ] ; then
309 solar 1.35 if [ "`is-flag -yno_propolice`" != "true" ]; then
310 solar 1.34 debug-print ">>> appending flags -yno_propolice"
311     append-flags -yno_propolice
312     append-ldflags -yno_propolice
313     fi
314 solar 1.35 fi
315 vapier 1.10 }

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