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Revision 1.79 - (hide annotations) (download)
Sat Dec 25 18:45:56 2004 UTC (9 years, 3 months ago) by chriswhite
Branch: MAIN
Changes since 1.78: +2 -1 lines
Setting up ppc specific ALLOWED_FLAGS with the first being -mabi.

1 vapier 1.60 # Copyright 1999-2004 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 chriswhite 1.79 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.78 2004/12/22 21:18:35 eradicator 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 vapier 1.63
10 vapier 1.75 IUSE="debug"
11 azarah 1.8
12 vapier 1.72 # need access to emktemp()
13 kugelfang 1.74 inherit eutils toolchain-funcs
14 vapier 1.72
15 verwilst 1.2 #
16 vapier 1.18 #### filter-flags <flags> ####
17 verwilst 1.3 # Remove particular flags from C[XX]FLAGS
18 vapier 1.18 # Matches only complete flags
19 verwilst 1.2 #
20 vapier 1.18 #### append-flags <flags> ####
21 verwilst 1.3 # Add extra flags to your current C[XX]FLAGS
22     #
23 verwilst 1.4 #### replace-flags <orig.flag> <new.flag> ###
24 verwilst 1.3 # Replace a flag by another one
25     #
26 vapier 1.70 #### replace-cpu-flags <old.cpus> <new.cpu> ###
27 vapier 1.37 # Replace march/mcpu flags that specify <old.cpus>
28     # with flags that specify <new.cpu>
29     #
30 danarmak 1.7 #### is-flag <flag> ####
31     # Returns "true" if flag is set in C[XX]FLAGS
32 vapier 1.18 # Matches only complete a flag
33 danarmak 1.7 #
34 azarah 1.8 #### strip-flags ####
35     # Strip C[XX]FLAGS of everything except known
36     # good options.
37     #
38 puggy 1.29 #### strip-unsupported-flags ####
39     # Strip C[XX]FLAGS of any flags not supported by
40     # installed version of gcc
41     #
42 vapier 1.10 #### get-flag <flag> ####
43     # Find and echo the value for a particular flag
44     #
45 joker 1.16 #### replace-sparc64-flags ####
46     # Sets mcpu to v8 and uses the original value
47     # as mtune if none specified.
48     #
49 vapier 1.26 #### filter-mfpmath <math types> ####
50     # Remove specified math types from the fpmath specification
51     # If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
52     # will leave the user with -mfpmath=386
53 solar 1.27 #
54     #### append-ldflags ####
55     # Add extra flags to your current LDFLAGS
56     #
57 solar 1.41 #### filter-ldflags <flags> ####
58     # Remove particular flags from LDFLAGS
59     # Matches only complete flags
60     #
61 solar 1.27 #### etexec-flags ####
62 pappy 1.50 # hooked function for hardened gcc that appends
63     # -fno-pic to {C,CXX,LD}FLAGS
64     # when a package is filtering -fpic, -fPIC, -fpie, -fPIE
65 solar 1.27 #
66     #### fstack-flags ####
67 pappy 1.50 # hooked function for hardened gcc that appends
68     # -fno-stack-protector to {C,CXX,LD}FLAGS
69     # when a package is filtering -fstack-protector, -fstack-protector-all
70     # notice: modern automatic specs files will also suppress -fstack-protector-all
71     # when only -fno-stack-protector is given
72 solar 1.27 #
73 verwilst 1.3
74 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
75 vapier 1.36 setup-allowed-flags() {
76 vapier 1.44 if [ -z "${ALLOWED_FLAGS}" ] ; then
77 vapier 1.76 export ALLOWED_FLAGS="-pipe"
78     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
79     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector"
80     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
81     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
82 vapier 1.44 case "${ARCH}" in
83 robbat2 1.71 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
84 lv 1.51 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
85     x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
86 vapier 1.44 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
87 vapier 1.65 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
88 eradicator 1.78 sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;;
89 chriswhite 1.79 ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;;
90 vapier 1.44 esac
91     fi
92 vapier 1.65 # allow a bunch of flags that negate features / control ABI
93     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
94     case "${ARCH}" in
95     x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;;
96     esac
97     ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias"
98 vapier 1.36
99     # C[XX]FLAGS that we are think is ok, but needs testing
100     # NOTE: currently -Os have issues with gcc3 and K6* arch's
101     export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
102     return 0
103 aliz 1.24 }
104 verwilst 1.13
105 vapier 1.18 filter-flags() {
106 agriffis 1.61 local x f fset
107     declare -a new_CFLAGS new_CXXFLAGS
108 agriffis 1.58
109 vapier 1.36 for x in "$@" ; do
110 solar 1.27 case "${x}" in
111 solar 1.39 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
112 solar 1.32 -fstack-protector|-fstack-protector-all) fstack-flags;;
113 solar 1.27 esac
114     done
115 vapier 1.36
116 agriffis 1.61 for fset in CFLAGS CXXFLAGS; do
117 agriffis 1.64 # Looping over the flags instead of using a global
118     # substitution ensures that we're working with flag atoms.
119     # Otherwise globs like -O* have the potential to wipe out the
120     # list of flags.
121 agriffis 1.61 for f in ${!fset}; do
122     for x in "$@"; do
123     # Note this should work with globs like -O*
124     [[ ${f} == ${x} ]] && continue 2
125     done
126     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
127     done
128     eval export ${fset}=\${new_${fset}\[*]}
129 verwilst 1.1 done
130 agriffis 1.61
131 vapier 1.36 return 0
132 verwilst 1.2 }
133    
134 vapier 1.40 filter-lfs-flags() {
135     filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
136     }
137    
138 vapier 1.48 append-lfs-flags() {
139     append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
140     }
141    
142 vapier 1.18 append-flags() {
143 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
144     export CXXFLAGS="${CXXFLAGS} $*"
145     [ -n "`is-flag -fno-stack-protector`" -o \
146     -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
147 vapier 1.28 return 0
148 verwilst 1.1 }
149    
150 vapier 1.18 replace-flags() {
151 agriffis 1.64 local f fset
152     declare -a new_CFLAGS new_CXXFLAGS
153    
154     for fset in CFLAGS CXXFLAGS; do
155     # Looping over the flags instead of using a global
156     # substitution ensures that we're working with flag atoms.
157     # Otherwise globs like -O* have the potential to wipe out the
158     # list of flags.
159     for f in ${!fset}; do
160     # Note this should work with globs like -O*
161     [[ ${f} == ${1} ]] && f=${2}
162     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
163     done
164     eval export ${fset}=\${new_${fset}\[*]}
165     done
166    
167 vapier 1.28 return 0
168 danarmak 1.7 }
169    
170 vapier 1.37 replace-cpu-flags() {
171 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
172     while [ $# -gt 1 ] ; do
173 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
174     # ${oldcpu} prior to calling replace-flags
175 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
176     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
177     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
178     shift
179 vapier 1.37 done
180     return 0
181     }
182    
183 danarmak 1.7 is-flag() {
184 agriffis 1.58 local x
185    
186 vapier 1.18 for x in ${CFLAGS} ${CXXFLAGS} ; do
187 agriffis 1.67 # Note this should work with globs like -mcpu=ultrasparc*
188     if [[ ${x} == ${1} ]]; then
189 azarah 1.8 echo true
190 vapier 1.18 return 0
191     fi
192 danarmak 1.7 done
193 vapier 1.18 return 1
194 verwilst 1.1 }
195 azarah 1.8
196 vapier 1.36 filter-mfpmath() {
197 agriffis 1.58 local orig_mfpmath new_math prune_math
198    
199 vapier 1.36 # save the original -mfpmath flag
200 agriffis 1.58 orig_mfpmath="`get-flag -mfpmath`"
201 vapier 1.36 # get the value of the current -mfpmath flag
202 agriffis 1.58 new_math=" `get-flag mfpmath | tr , ' '` "
203 vapier 1.36 # figure out which math values are to be removed
204 agriffis 1.58 prune_math=""
205 vapier 1.36 for prune_math in "$@" ; do
206     new_math="${new_math/ ${prune_math} / }"
207     done
208     new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
209    
210     if [ -z "${new_math}" ] ; then
211     # if we're removing all user specified math values are
212     # slated for removal, then we just filter the flag
213     filter-flags ${orig_mfpmath}
214     else
215     # if we only want to filter some of the user specified
216     # math values, then we replace the current flag
217     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
218     fi
219     return 0
220     }
221    
222 azarah 1.8 strip-flags() {
223 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
224    
225 vapier 1.36 setup-allowed-flags
226    
227 azarah 1.8 local NEW_CFLAGS=""
228     local NEW_CXXFLAGS=""
229    
230 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
231 vapier 1.49 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then
232     use debug && einfo "Enabling the use of some unstable flags"
233 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
234     fi
235    
236 agriffis 1.58 set -f # disable pathname expansion
237 azarah 1.8
238 agriffis 1.58 for x in ${CFLAGS}; do
239     for y in ${ALLOWED_FLAGS}; do
240 lostlogic 1.14 flag=${x%%=*}
241 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
242 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
243     break
244 azarah 1.8 fi
245     done
246     done
247    
248 agriffis 1.58 for x in ${CXXFLAGS}; do
249     for y in ${ALLOWED_FLAGS}; do
250 lostlogic 1.14 flag=${x%%=*}
251 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
252 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
253     break
254 azarah 1.8 fi
255     done
256     done
257 azarah 1.30
258     # In case we filtered out all optimization flags fallback to -O2
259     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
260     NEW_CFLAGS="${NEW_CFLAGS} -O2"
261     fi
262     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
263     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
264     fi
265 azarah 1.8
266 agriffis 1.58 set +f # re-enable pathname expansion
267 azarah 1.8
268     export CFLAGS="${NEW_CFLAGS}"
269     export CXXFLAGS="${NEW_CXXFLAGS}"
270 vapier 1.36 return 0
271 puggy 1.29 }
272    
273 vapier 1.36 test_flag() {
274 vapier 1.75 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
275 agriffis 1.58 printf "%s\n" "$*"
276 vapier 1.36 return 0
277 puggy 1.29 fi
278 vapier 1.36 return 1
279 puggy 1.29 }
280    
281 agriffis 1.58 test_version_info() {
282 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
283 agriffis 1.58 return 0
284     else
285     return 1
286     fi
287     }
288    
289 puggy 1.29 strip-unsupported-flags() {
290 agriffis 1.58 local NEW_CFLAGS NEW_CXXFLAGS
291    
292 vapier 1.36 for x in ${CFLAGS} ; do
293 agriffis 1.58 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
294 puggy 1.29 done
295 vapier 1.36 for x in ${CXXFLAGS} ; do
296 agriffis 1.58 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
297 puggy 1.29 done
298    
299 vapier 1.36 export CFLAGS="${NEW_CFLAGS}"
300     export CXXFLAGS="${NEW_CXXFLAGS}"
301 azarah 1.8 }
302    
303 vapier 1.10 get-flag() {
304 agriffis 1.58 local f findflag="$1"
305    
306 vapier 1.36 # this code looks a little flaky but seems to work for
307     # everything we want ...
308     # for example, if CFLAGS="-march=i686":
309 agriffis 1.58 # `get-flag -march` == "-march=i686"
310     # `get-flag march` == "i686"
311 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
312     if [ "${f/${findflag}}" != "${f}" ] ; then
313 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
314 vapier 1.28 return 0
315 vapier 1.10 fi
316     done
317 vapier 1.28 return 1
318 joker 1.16 }
319    
320 solar 1.53 has_hardened() {
321 lv 1.69 test_version_info Hardened && return 0
322     # the specs file wont exist unless gcc has GCC_SPECS support
323     [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
324     return 0
325     return 1
326 solar 1.53 }
327    
328 tseng 1.42 has_pic() {
329     [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
330     [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
331 agriffis 1.58 test_version_info pie && return 0
332 tseng 1.42 return 1
333     }
334    
335     has_pie() {
336 tseng 1.43 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
337     [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
338 agriffis 1.58 test_version_info pie && return 0
339 tseng 1.42 return 1
340     }
341    
342     has_ssp() {
343     [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
344 agriffis 1.58 test_version_info ssp && return 0
345 tseng 1.42 return 1
346     }
347    
348 lv 1.56 has_m64() {
349 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
350     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
351     # please dont replace this function with test_flag in some future
352     # clean-up!
353 vapier 1.72 local temp="$(emktemp)"
354 lv 1.62 echo "int main() { return(0); }" > ${temp}.c
355 kugelfang 1.74 MY_CC=$(tc-getCC)
356     ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
357 vapier 1.72 local ret=$?
358 lv 1.62 rm -f ${temp}.c
359     [ "$ret" != "1" ] && return 0
360     return 1
361 lv 1.56 }
362    
363     has_m32() {
364 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
365     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
366     # please dont replace this function with test_flag in some future
367     # clean-up!
368 vapier 1.72 local temp="$(emktemp)"
369 lv 1.62 echo "int main() { return(0); }" > ${temp}.c
370 kugelfang 1.74 MY_CC=$(tc-getCC)
371     ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
372 vapier 1.72 local ret=$?
373 lv 1.62 rm -f ${temp}.c
374     [ "$ret" != "1" ] && return 0
375     return 1
376 lv 1.56 }
377    
378 vapier 1.18 replace-sparc64-flags() {
379 joker 1.16 local SPARC64_CPUS="ultrasparc v9"
380    
381 agriffis 1.58 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
382     for x in ${SPARC64_CPUS}; do
383 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
384     done
385     else
386 agriffis 1.58 for x in ${SPARC64_CPUS}; do
387 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
388     done
389     fi
390    
391 agriffis 1.58 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
392     for x in ${SPARC64_CPUS}; do
393 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
394     done
395     else
396 agriffis 1.58 for x in ${SPARC64_CPUS}; do
397 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
398     done
399     fi
400 vapier 1.59
401     export CFLAGS CXXFLAGS
402 solar 1.27 }
403    
404     append-ldflags() {
405 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
406 vapier 1.28 return 0
407 solar 1.27 }
408    
409 solar 1.41 filter-ldflags() {
410 agriffis 1.58 local x
411    
412 solar 1.41 # we do this fancy spacing stuff so as to not filter
413     # out part of a flag ... we want flag atoms ! :D
414     LDFLAGS=" ${LDFLAGS} "
415     for x in "$@" ; do
416     LDFLAGS="${LDFLAGS// ${x} / }"
417     done
418     LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
419 vapier 1.59 export LDFLAGS
420 solar 1.41 return 0
421     }
422    
423 vapier 1.36 etexec-flags() {
424 agriffis 1.58 # if you're not using a hardened compiler you wont need this
425 solar 1.53 # PIC/no-pic kludge in the first place.
426 agriffis 1.58 has_hardened || return 0
427 lv 1.66 use amd64 && return 0
428 solar 1.77 use mips && return 0
429 pappy 1.50
430 agriffis 1.58 if has_pie || has_pic; then
431     [ -z "`is-flag -fno-pic`" ] &&
432     export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
433     [ -z "`is-flag -nopie`" ] &&
434     export CFLAGS="${CFLAGS} `test_flag -nopie`"
435 solar 1.35 fi
436 agriffis 1.58 return 0
437 solar 1.27 }
438    
439     fstack-flags() {
440 agriffis 1.58 if has_ssp; then
441     [ -z "`is-flag -fno-stack-protector`" ] &&
442     export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
443 solar 1.35 fi
444 agriffis 1.58 return 0
445 vapier 1.10 }
446 vapier 1.73
447     # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
448     # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
449     # fixes.
450     #
451     # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
452     gcc2-flags() {
453     CFLAGS=${CFLAGS//pentium-mmx/i586}
454     CFLAGS=${CFLAGS//pentium[234]/i686}
455     CFLAGS=${CFLAGS//k6-[23]/k6}
456     CFLAGS=${CFLAGS//athlon-tbird/i686}
457     CFLAGS=${CFLAGS//athlon-4/i686}
458     CFLAGS=${CFLAGS//athlon-[xm]p/i686}
459     CFLAGS=${CFLAGS//athlon/i686}
460    
461     CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
462     CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
463     CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
464     CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
465     CXXFLAGS=${CXXFLAGS//athlon-4/i686}
466     CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
467     CXXFLAGS=${CXXFLAGS//athlon/i686}
468    
469     if [ "$ARCH" = alpha ]; then
470     CHOST=${CHOST/#alphaev6[78]/alphaev6}
471     CFLAGS=${CFLAGS//ev6[78]/ev6}
472     CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
473     fi
474    
475     export CFLAGS CXXFLAGS
476     }

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