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Revision 1.85 - (hide annotations) (download)
Wed Apr 6 23:29:23 2005 UTC (9 years, 6 months ago) by vapier
Branch: MAIN
Changes since 1.84: +12 -21 lines
filter mtune -> mcpu with gcc2 #88147

1 vapier 1.84 # Copyright 1999-2005 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.85 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.84 2005/03/18 03:48:14 vapier Exp $
4 azarah 1.8
5 verwilst 1.1 ECLASS=flag-o-matic
6 danarmak 1.6 INHERITED="$INHERITED $ECLASS"
7 vapier 1.63
8 vapier 1.75 IUSE="debug"
9 azarah 1.8
10 vapier 1.72 # need access to emktemp()
11 eradicator 1.80 inherit eutils toolchain-funcs multilib
12 vapier 1.72
13 verwilst 1.2 #
14 vapier 1.18 #### filter-flags <flags> ####
15 verwilst 1.3 # Remove particular flags from C[XX]FLAGS
16 vapier 1.18 # Matches only complete flags
17 verwilst 1.2 #
18 vapier 1.18 #### append-flags <flags> ####
19 verwilst 1.3 # Add extra flags to your current C[XX]FLAGS
20     #
21 verwilst 1.4 #### replace-flags <orig.flag> <new.flag> ###
22 verwilst 1.3 # Replace a flag by another one
23     #
24 vapier 1.70 #### replace-cpu-flags <old.cpus> <new.cpu> ###
25 vapier 1.37 # Replace march/mcpu flags that specify <old.cpus>
26     # with flags that specify <new.cpu>
27     #
28 danarmak 1.7 #### is-flag <flag> ####
29     # Returns "true" if flag is set in C[XX]FLAGS
30 vapier 1.18 # Matches only complete a flag
31 danarmak 1.7 #
32 azarah 1.8 #### strip-flags ####
33     # Strip C[XX]FLAGS of everything except known
34     # good options.
35     #
36 puggy 1.29 #### strip-unsupported-flags ####
37     # Strip C[XX]FLAGS of any flags not supported by
38     # installed version of gcc
39     #
40 vapier 1.10 #### get-flag <flag> ####
41     # Find and echo the value for a particular flag
42     #
43 joker 1.16 #### replace-sparc64-flags ####
44     # Sets mcpu to v8 and uses the original value
45     # as mtune if none specified.
46     #
47 vapier 1.26 #### filter-mfpmath <math types> ####
48     # Remove specified math types from the fpmath specification
49     # If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
50     # will leave the user with -mfpmath=386
51 solar 1.27 #
52     #### append-ldflags ####
53     # Add extra flags to your current LDFLAGS
54     #
55 solar 1.41 #### filter-ldflags <flags> ####
56     # Remove particular flags from LDFLAGS
57     # Matches only complete flags
58     #
59 solar 1.27 #### fstack-flags ####
60 pappy 1.50 # hooked function for hardened gcc that appends
61     # -fno-stack-protector to {C,CXX,LD}FLAGS
62     # when a package is filtering -fstack-protector, -fstack-protector-all
63     # notice: modern automatic specs files will also suppress -fstack-protector-all
64     # when only -fno-stack-protector is given
65 solar 1.27 #
66 verwilst 1.3
67 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
68 vapier 1.36 setup-allowed-flags() {
69 vapier 1.84 if [[ -z ${ALLOWED_FLAGS} ]] ; then
70 vapier 1.76 export ALLOWED_FLAGS="-pipe"
71     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
72     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector"
73     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
74     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
75 vapier 1.84 case $(tc-arch) in
76 robbat2 1.71 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
77 lv 1.51 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
78     x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
79 vapier 1.44 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
80 vapier 1.65 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
81 vapier 1.84 sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;;
82 chriswhite 1.79 ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;;
83 vapier 1.44 esac
84     fi
85 vapier 1.65 # allow a bunch of flags that negate features / control ABI
86     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
87 vapier 1.84 case $(tc-arch) in
88 vapier 1.65 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;;
89     esac
90     ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias"
91 vapier 1.36
92     # C[XX]FLAGS that we are think is ok, but needs testing
93     # NOTE: currently -Os have issues with gcc3 and K6* arch's
94     export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
95     return 0
96 aliz 1.24 }
97 verwilst 1.13
98 vapier 1.18 filter-flags() {
99 mr_bones_ 1.83 local x f fset
100 agriffis 1.61 declare -a new_CFLAGS new_CXXFLAGS
101 agriffis 1.58
102 vapier 1.36 for x in "$@" ; do
103 solar 1.27 case "${x}" in
104 solar 1.82 -fPIC|-fpic|-fPIE|-fpie|-pie)
105     append-flags `test_flag -fno-pie`;;
106     -fstack-protector|-fstack-protector-all)
107     fstack-flags;;
108 solar 1.27 esac
109     done
110 vapier 1.36
111 agriffis 1.61 for fset in CFLAGS CXXFLAGS; do
112 agriffis 1.64 # Looping over the flags instead of using a global
113     # substitution ensures that we're working with flag atoms.
114     # Otherwise globs like -O* have the potential to wipe out the
115     # list of flags.
116 agriffis 1.61 for f in ${!fset}; do
117     for x in "$@"; do
118     # Note this should work with globs like -O*
119     [[ ${f} == ${x} ]] && continue 2
120     done
121     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
122     done
123     eval export ${fset}=\${new_${fset}\[*]}
124 verwilst 1.1 done
125 agriffis 1.61
126 vapier 1.36 return 0
127 verwilst 1.2 }
128    
129 vapier 1.40 filter-lfs-flags() {
130     filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
131     }
132    
133 vapier 1.48 append-lfs-flags() {
134     append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
135     }
136    
137 vapier 1.18 append-flags() {
138 solar 1.82 [[ -z $* ]] && return 0
139 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
140     export CXXFLAGS="${CXXFLAGS} $*"
141     [ -n "`is-flag -fno-stack-protector`" -o \
142     -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
143 vapier 1.28 return 0
144 verwilst 1.1 }
145    
146 vapier 1.18 replace-flags() {
147 mr_bones_ 1.83 local f fset
148 agriffis 1.64 declare -a new_CFLAGS new_CXXFLAGS
149    
150     for fset in CFLAGS CXXFLAGS; do
151     # Looping over the flags instead of using a global
152     # substitution ensures that we're working with flag atoms.
153     # Otherwise globs like -O* have the potential to wipe out the
154     # list of flags.
155     for f in ${!fset}; do
156     # Note this should work with globs like -O*
157     [[ ${f} == ${1} ]] && f=${2}
158     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
159     done
160     eval export ${fset}=\${new_${fset}\[*]}
161     done
162    
163 vapier 1.28 return 0
164 danarmak 1.7 }
165    
166 vapier 1.37 replace-cpu-flags() {
167 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
168     while [ $# -gt 1 ] ; do
169 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
170     # ${oldcpu} prior to calling replace-flags
171 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
172     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
173     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
174     shift
175 vapier 1.37 done
176     return 0
177     }
178    
179 danarmak 1.7 is-flag() {
180 agriffis 1.58 local x
181    
182 vapier 1.18 for x in ${CFLAGS} ${CXXFLAGS} ; do
183 agriffis 1.67 # Note this should work with globs like -mcpu=ultrasparc*
184     if [[ ${x} == ${1} ]]; then
185 azarah 1.8 echo true
186 vapier 1.18 return 0
187     fi
188 danarmak 1.7 done
189 vapier 1.18 return 1
190 verwilst 1.1 }
191 azarah 1.8
192 vapier 1.36 filter-mfpmath() {
193 agriffis 1.58 local orig_mfpmath new_math prune_math
194    
195 vapier 1.36 # save the original -mfpmath flag
196 agriffis 1.58 orig_mfpmath="`get-flag -mfpmath`"
197 vapier 1.36 # get the value of the current -mfpmath flag
198 agriffis 1.58 new_math=" `get-flag mfpmath | tr , ' '` "
199 vapier 1.36 # figure out which math values are to be removed
200 agriffis 1.58 prune_math=""
201 vapier 1.36 for prune_math in "$@" ; do
202     new_math="${new_math/ ${prune_math} / }"
203     done
204     new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
205    
206     if [ -z "${new_math}" ] ; then
207     # if we're removing all user specified math values are
208     # slated for removal, then we just filter the flag
209     filter-flags ${orig_mfpmath}
210     else
211     # if we only want to filter some of the user specified
212     # math values, then we replace the current flag
213     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
214     fi
215     return 0
216     }
217    
218 azarah 1.8 strip-flags() {
219 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
220    
221 vapier 1.36 setup-allowed-flags
222    
223 azarah 1.8 local NEW_CFLAGS=""
224     local NEW_CXXFLAGS=""
225    
226 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
227 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
228 vapier 1.49 use debug && einfo "Enabling the use of some unstable flags"
229 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
230     fi
231    
232 agriffis 1.58 set -f # disable pathname expansion
233 azarah 1.8
234 agriffis 1.58 for x in ${CFLAGS}; do
235     for y in ${ALLOWED_FLAGS}; do
236 lostlogic 1.14 flag=${x%%=*}
237 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
238 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
239     break
240 azarah 1.8 fi
241     done
242     done
243    
244 agriffis 1.58 for x in ${CXXFLAGS}; do
245     for y in ${ALLOWED_FLAGS}; do
246 lostlogic 1.14 flag=${x%%=*}
247 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
248 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
249     break
250 azarah 1.8 fi
251     done
252     done
253 azarah 1.30
254     # In case we filtered out all optimization flags fallback to -O2
255     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
256     NEW_CFLAGS="${NEW_CFLAGS} -O2"
257     fi
258     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
259     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
260     fi
261 azarah 1.8
262 agriffis 1.58 set +f # re-enable pathname expansion
263 azarah 1.8
264     export CFLAGS="${NEW_CFLAGS}"
265     export CXXFLAGS="${NEW_CXXFLAGS}"
266 vapier 1.36 return 0
267 puggy 1.29 }
268    
269 vapier 1.36 test_flag() {
270 vapier 1.75 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
271 agriffis 1.58 printf "%s\n" "$*"
272 vapier 1.36 return 0
273 puggy 1.29 fi
274 vapier 1.36 return 1
275 puggy 1.29 }
276    
277 agriffis 1.58 test_version_info() {
278 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
279 agriffis 1.58 return 0
280     else
281     return 1
282     fi
283     }
284    
285 puggy 1.29 strip-unsupported-flags() {
286 agriffis 1.58 local NEW_CFLAGS NEW_CXXFLAGS
287    
288 vapier 1.36 for x in ${CFLAGS} ; do
289 agriffis 1.58 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
290 puggy 1.29 done
291 vapier 1.36 for x in ${CXXFLAGS} ; do
292 agriffis 1.58 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
293 puggy 1.29 done
294    
295 vapier 1.36 export CFLAGS="${NEW_CFLAGS}"
296     export CXXFLAGS="${NEW_CXXFLAGS}"
297 azarah 1.8 }
298    
299 vapier 1.10 get-flag() {
300 agriffis 1.58 local f findflag="$1"
301    
302 vapier 1.36 # this code looks a little flaky but seems to work for
303     # everything we want ...
304     # for example, if CFLAGS="-march=i686":
305 agriffis 1.58 # `get-flag -march` == "-march=i686"
306     # `get-flag march` == "i686"
307 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
308     if [ "${f/${findflag}}" != "${f}" ] ; then
309 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
310 vapier 1.28 return 0
311 vapier 1.10 fi
312     done
313 vapier 1.28 return 1
314 joker 1.16 }
315    
316 solar 1.53 has_hardened() {
317 lv 1.69 test_version_info Hardened && return 0
318     # the specs file wont exist unless gcc has GCC_SPECS support
319     [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
320     return 0
321     return 1
322 solar 1.53 }
323    
324 solar 1.81 # indicate whether PIC is set
325 tseng 1.42 has_pic() {
326     [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
327     [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
328 solar 1.81 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
329 agriffis 1.58 test_version_info pie && return 0
330 tseng 1.42 return 1
331     }
332    
333 solar 1.81 # indicate whether PIE is set
334 mr_bones_ 1.83 has_pie() {
335 tseng 1.43 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
336     [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
337 solar 1.81 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
338     # test PIC while waiting for specs to be updated to generate __PIE__
339     [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
340 tseng 1.42 return 1
341     }
342 mr_bones_ 1.83
343 solar 1.81 # indicate whether code for SSP is being generated
344 tseng 1.42 has_ssp() {
345 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
346 tseng 1.42 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
347 solar 1.81 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
348 tseng 1.42 return 1
349     }
350    
351 lv 1.56 has_m64() {
352 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
353     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
354     # please dont replace this function with test_flag in some future
355     # clean-up!
356 vapier 1.72 local temp="$(emktemp)"
357 lv 1.62 echo "int main() { return(0); }" > ${temp}.c
358 kugelfang 1.74 MY_CC=$(tc-getCC)
359     ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
360 vapier 1.72 local ret=$?
361 lv 1.62 rm -f ${temp}.c
362     [ "$ret" != "1" ] && return 0
363     return 1
364 lv 1.56 }
365    
366     has_m32() {
367 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
368     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
369     # please dont replace this function with test_flag in some future
370     # clean-up!
371 eradicator 1.80
372     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
373    
374 vapier 1.72 local temp="$(emktemp)"
375 lv 1.62 echo "int main() { return(0); }" > ${temp}.c
376 kugelfang 1.74 MY_CC=$(tc-getCC)
377     ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
378 vapier 1.72 local ret=$?
379 lv 1.62 rm -f ${temp}.c
380     [ "$ret" != "1" ] && return 0
381     return 1
382 lv 1.56 }
383    
384 vapier 1.18 replace-sparc64-flags() {
385 joker 1.16 local SPARC64_CPUS="ultrasparc v9"
386    
387 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
388 agriffis 1.58 for x in ${SPARC64_CPUS}; do
389 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
390     done
391 mr_bones_ 1.83 else
392 agriffis 1.58 for x in ${SPARC64_CPUS}; do
393 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
394     done
395     fi
396 mr_bones_ 1.83
397     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
398 agriffis 1.58 for x in ${SPARC64_CPUS}; do
399 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
400     done
401     else
402 agriffis 1.58 for x in ${SPARC64_CPUS}; do
403 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
404     done
405     fi
406 vapier 1.59
407     export CFLAGS CXXFLAGS
408 solar 1.27 }
409    
410     append-ldflags() {
411 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
412 vapier 1.28 return 0
413 solar 1.27 }
414    
415 solar 1.41 filter-ldflags() {
416 agriffis 1.58 local x
417    
418 solar 1.41 # we do this fancy spacing stuff so as to not filter
419     # out part of a flag ... we want flag atoms ! :D
420     LDFLAGS=" ${LDFLAGS} "
421     for x in "$@" ; do
422 vapier 1.84 LDFLAGS=${LDFLAGS// ${x} / }
423 solar 1.41 done
424 vapier 1.84 [[ -z ${LDFLAGS// } ]] \
425     && LDFLAGS="" \
426     || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
427 vapier 1.59 export LDFLAGS
428 solar 1.41 return 0
429     }
430    
431 solar 1.27 fstack-flags() {
432 agriffis 1.58 if has_ssp; then
433 mr_bones_ 1.83 [ -z "`is-flag -fno-stack-protector`" ] &&
434 agriffis 1.58 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
435 solar 1.35 fi
436 agriffis 1.58 return 0
437 vapier 1.10 }
438 vapier 1.73
439     # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
440     # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
441     # fixes.
442     #
443     # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
444     gcc2-flags() {
445 vapier 1.85 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
446     CFLAGS=${CFLAGS//-mtune=/-mcpu=}
447     CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
448 vapier 1.73 fi
449    
450 vapier 1.85 replace-cpu-flags k6-{2,3} k6
451     replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
452    
453     replace-cpu-flags pentium-mmx i586
454     replace-cpu-flags pentium{2,3,4} i686
455    
456     replace-cpu-flags ev6{7,8} ev6
457    
458 vapier 1.73 export CFLAGS CXXFLAGS
459     }

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