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Revision 1.78 - (hide annotations) (download)
Wed Dec 22 21:18:35 2004 UTC (9 years, 10 months ago) by eradicator
Branch: MAIN
Changes since 1.77: +2 -1 lines
Added -m{32,64} to allowed flags on sparc.

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 eradicator 1.78 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.77 2004/11/13 07:07:08 solar 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="${ALLOWED_FLAGS} -m32 -m64" ;;
89 vapier 1.44 esac
90     fi
91 vapier 1.65 # allow a bunch of flags that negate features / control ABI
92     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
93     case "${ARCH}" in
94     x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;;
95     esac
96     ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias"
97 vapier 1.36
98     # C[XX]FLAGS that we are think is ok, but needs testing
99     # NOTE: currently -Os have issues with gcc3 and K6* arch's
100     export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
101     return 0
102 aliz 1.24 }
103 verwilst 1.13
104 vapier 1.18 filter-flags() {
105 agriffis 1.61 local x f fset
106     declare -a new_CFLAGS new_CXXFLAGS
107 agriffis 1.58
108 vapier 1.36 for x in "$@" ; do
109 solar 1.27 case "${x}" in
110 solar 1.39 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
111 solar 1.32 -fstack-protector|-fstack-protector-all) fstack-flags;;
112 solar 1.27 esac
113     done
114 vapier 1.36
115 agriffis 1.61 for fset in CFLAGS CXXFLAGS; do
116 agriffis 1.64 # Looping over the flags instead of using a global
117     # substitution ensures that we're working with flag atoms.
118     # Otherwise globs like -O* have the potential to wipe out the
119     # list of flags.
120 agriffis 1.61 for f in ${!fset}; do
121     for x in "$@"; do
122     # Note this should work with globs like -O*
123     [[ ${f} == ${x} ]] && continue 2
124     done
125     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
126     done
127     eval export ${fset}=\${new_${fset}\[*]}
128 verwilst 1.1 done
129 agriffis 1.61
130 vapier 1.36 return 0
131 verwilst 1.2 }
132    
133 vapier 1.40 filter-lfs-flags() {
134     filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
135     }
136    
137 vapier 1.48 append-lfs-flags() {
138     append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
139     }
140    
141 vapier 1.18 append-flags() {
142 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
143     export CXXFLAGS="${CXXFLAGS} $*"
144     [ -n "`is-flag -fno-stack-protector`" -o \
145     -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
146 vapier 1.28 return 0
147 verwilst 1.1 }
148    
149 vapier 1.18 replace-flags() {
150 agriffis 1.64 local f fset
151     declare -a new_CFLAGS new_CXXFLAGS
152    
153     for fset in CFLAGS CXXFLAGS; do
154     # Looping over the flags instead of using a global
155     # substitution ensures that we're working with flag atoms.
156     # Otherwise globs like -O* have the potential to wipe out the
157     # list of flags.
158     for f in ${!fset}; do
159     # Note this should work with globs like -O*
160     [[ ${f} == ${1} ]] && f=${2}
161     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
162     done
163     eval export ${fset}=\${new_${fset}\[*]}
164     done
165    
166 vapier 1.28 return 0
167 danarmak 1.7 }
168    
169 vapier 1.37 replace-cpu-flags() {
170 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
171     while [ $# -gt 1 ] ; do
172 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
173     # ${oldcpu} prior to calling replace-flags
174 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
175     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
176     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
177     shift
178 vapier 1.37 done
179     return 0
180     }
181    
182 danarmak 1.7 is-flag() {
183 agriffis 1.58 local x
184    
185 vapier 1.18 for x in ${CFLAGS} ${CXXFLAGS} ; do
186 agriffis 1.67 # Note this should work with globs like -mcpu=ultrasparc*
187     if [[ ${x} == ${1} ]]; then
188 azarah 1.8 echo true
189 vapier 1.18 return 0
190     fi
191 danarmak 1.7 done
192 vapier 1.18 return 1
193 verwilst 1.1 }
194 azarah 1.8
195 vapier 1.36 filter-mfpmath() {
196 agriffis 1.58 local orig_mfpmath new_math prune_math
197    
198 vapier 1.36 # save the original -mfpmath flag
199 agriffis 1.58 orig_mfpmath="`get-flag -mfpmath`"
200 vapier 1.36 # get the value of the current -mfpmath flag
201 agriffis 1.58 new_math=" `get-flag mfpmath | tr , ' '` "
202 vapier 1.36 # figure out which math values are to be removed
203 agriffis 1.58 prune_math=""
204 vapier 1.36 for prune_math in "$@" ; do
205     new_math="${new_math/ ${prune_math} / }"
206     done
207     new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
208    
209     if [ -z "${new_math}" ] ; then
210     # if we're removing all user specified math values are
211     # slated for removal, then we just filter the flag
212     filter-flags ${orig_mfpmath}
213     else
214     # if we only want to filter some of the user specified
215     # math values, then we replace the current flag
216     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
217     fi
218     return 0
219     }
220    
221 azarah 1.8 strip-flags() {
222 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
223    
224 vapier 1.36 setup-allowed-flags
225    
226 azarah 1.8 local NEW_CFLAGS=""
227     local NEW_CXXFLAGS=""
228    
229 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
230 vapier 1.49 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then
231     use debug && einfo "Enabling the use of some unstable flags"
232 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
233     fi
234    
235 agriffis 1.58 set -f # disable pathname expansion
236 azarah 1.8
237 agriffis 1.58 for x in ${CFLAGS}; do
238     for y in ${ALLOWED_FLAGS}; do
239 lostlogic 1.14 flag=${x%%=*}
240 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
241 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
242     break
243 azarah 1.8 fi
244     done
245     done
246    
247 agriffis 1.58 for x in ${CXXFLAGS}; do
248     for y in ${ALLOWED_FLAGS}; do
249 lostlogic 1.14 flag=${x%%=*}
250 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
251 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
252     break
253 azarah 1.8 fi
254     done
255     done
256 azarah 1.30
257     # In case we filtered out all optimization flags fallback to -O2
258     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
259     NEW_CFLAGS="${NEW_CFLAGS} -O2"
260     fi
261     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
262     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
263     fi
264 azarah 1.8
265 agriffis 1.58 set +f # re-enable pathname expansion
266 azarah 1.8
267     export CFLAGS="${NEW_CFLAGS}"
268     export CXXFLAGS="${NEW_CXXFLAGS}"
269 vapier 1.36 return 0
270 puggy 1.29 }
271    
272 vapier 1.36 test_flag() {
273 vapier 1.75 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
274 agriffis 1.58 printf "%s\n" "$*"
275 vapier 1.36 return 0
276 puggy 1.29 fi
277 vapier 1.36 return 1
278 puggy 1.29 }
279    
280 agriffis 1.58 test_version_info() {
281 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
282 agriffis 1.58 return 0
283     else
284     return 1
285     fi
286     }
287    
288 puggy 1.29 strip-unsupported-flags() {
289 agriffis 1.58 local NEW_CFLAGS NEW_CXXFLAGS
290    
291 vapier 1.36 for x in ${CFLAGS} ; do
292 agriffis 1.58 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
293 puggy 1.29 done
294 vapier 1.36 for x in ${CXXFLAGS} ; do
295 agriffis 1.58 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
296 puggy 1.29 done
297    
298 vapier 1.36 export CFLAGS="${NEW_CFLAGS}"
299     export CXXFLAGS="${NEW_CXXFLAGS}"
300 azarah 1.8 }
301    
302 vapier 1.10 get-flag() {
303 agriffis 1.58 local f findflag="$1"
304    
305 vapier 1.36 # this code looks a little flaky but seems to work for
306     # everything we want ...
307     # for example, if CFLAGS="-march=i686":
308 agriffis 1.58 # `get-flag -march` == "-march=i686"
309     # `get-flag march` == "i686"
310 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
311     if [ "${f/${findflag}}" != "${f}" ] ; then
312 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
313 vapier 1.28 return 0
314 vapier 1.10 fi
315     done
316 vapier 1.28 return 1
317 joker 1.16 }
318    
319 solar 1.53 has_hardened() {
320 lv 1.69 test_version_info Hardened && return 0
321     # the specs file wont exist unless gcc has GCC_SPECS support
322     [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
323     return 0
324     return 1
325 solar 1.53 }
326    
327 tseng 1.42 has_pic() {
328     [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
329     [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
330 agriffis 1.58 test_version_info pie && return 0
331 tseng 1.42 return 1
332     }
333    
334     has_pie() {
335 tseng 1.43 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
336     [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
337 agriffis 1.58 test_version_info pie && return 0
338 tseng 1.42 return 1
339     }
340    
341     has_ssp() {
342     [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
343 agriffis 1.58 test_version_info ssp && return 0
344 tseng 1.42 return 1
345     }
346    
347 lv 1.56 has_m64() {
348 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
349     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
350     # please dont replace this function with test_flag in some future
351     # clean-up!
352 vapier 1.72 local temp="$(emktemp)"
353 lv 1.62 echo "int main() { return(0); }" > ${temp}.c
354 kugelfang 1.74 MY_CC=$(tc-getCC)
355     ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
356 vapier 1.72 local ret=$?
357 lv 1.62 rm -f ${temp}.c
358     [ "$ret" != "1" ] && return 0
359     return 1
360 lv 1.56 }
361    
362     has_m32() {
363 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
364     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
365     # please dont replace this function with test_flag in some future
366     # clean-up!
367 vapier 1.72 local temp="$(emktemp)"
368 lv 1.62 echo "int main() { return(0); }" > ${temp}.c
369 kugelfang 1.74 MY_CC=$(tc-getCC)
370     ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
371 vapier 1.72 local ret=$?
372 lv 1.62 rm -f ${temp}.c
373     [ "$ret" != "1" ] && return 0
374     return 1
375 lv 1.56 }
376    
377 vapier 1.18 replace-sparc64-flags() {
378 joker 1.16 local SPARC64_CPUS="ultrasparc v9"
379    
380 agriffis 1.58 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
381     for x in ${SPARC64_CPUS}; do
382 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
383     done
384     else
385 agriffis 1.58 for x in ${SPARC64_CPUS}; do
386 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
387     done
388     fi
389    
390 agriffis 1.58 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
391     for x in ${SPARC64_CPUS}; do
392 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
393     done
394     else
395 agriffis 1.58 for x in ${SPARC64_CPUS}; do
396 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
397     done
398     fi
399 vapier 1.59
400     export CFLAGS CXXFLAGS
401 solar 1.27 }
402    
403     append-ldflags() {
404 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
405 vapier 1.28 return 0
406 solar 1.27 }
407    
408 solar 1.41 filter-ldflags() {
409 agriffis 1.58 local x
410    
411 solar 1.41 # we do this fancy spacing stuff so as to not filter
412     # out part of a flag ... we want flag atoms ! :D
413     LDFLAGS=" ${LDFLAGS} "
414     for x in "$@" ; do
415     LDFLAGS="${LDFLAGS// ${x} / }"
416     done
417     LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
418 vapier 1.59 export LDFLAGS
419 solar 1.41 return 0
420     }
421    
422 vapier 1.36 etexec-flags() {
423 agriffis 1.58 # if you're not using a hardened compiler you wont need this
424 solar 1.53 # PIC/no-pic kludge in the first place.
425 agriffis 1.58 has_hardened || return 0
426 lv 1.66 use amd64 && return 0
427 solar 1.77 use mips && return 0
428 pappy 1.50
429 agriffis 1.58 if has_pie || has_pic; then
430     [ -z "`is-flag -fno-pic`" ] &&
431     export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
432     [ -z "`is-flag -nopie`" ] &&
433     export CFLAGS="${CFLAGS} `test_flag -nopie`"
434 solar 1.35 fi
435 agriffis 1.58 return 0
436 solar 1.27 }
437    
438     fstack-flags() {
439 agriffis 1.58 if has_ssp; then
440     [ -z "`is-flag -fno-stack-protector`" ] &&
441     export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
442 solar 1.35 fi
443 agriffis 1.58 return 0
444 vapier 1.10 }
445 vapier 1.73
446     # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
447     # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
448     # fixes.
449     #
450     # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
451     gcc2-flags() {
452     CFLAGS=${CFLAGS//pentium-mmx/i586}
453     CFLAGS=${CFLAGS//pentium[234]/i686}
454     CFLAGS=${CFLAGS//k6-[23]/k6}
455     CFLAGS=${CFLAGS//athlon-tbird/i686}
456     CFLAGS=${CFLAGS//athlon-4/i686}
457     CFLAGS=${CFLAGS//athlon-[xm]p/i686}
458     CFLAGS=${CFLAGS//athlon/i686}
459    
460     CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
461     CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
462     CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
463     CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
464     CXXFLAGS=${CXXFLAGS//athlon-4/i686}
465     CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
466     CXXFLAGS=${CXXFLAGS//athlon/i686}
467    
468     if [ "$ARCH" = alpha ]; then
469     CHOST=${CHOST/#alphaev6[78]/alphaev6}
470     CFLAGS=${CFLAGS//ev6[78]/ev6}
471     CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
472     fi
473    
474     export CFLAGS CXXFLAGS
475     }

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