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Revision 1.110 - (hide annotations) (download)
Tue Aug 1 00:49:16 2006 UTC (7 years, 11 months ago) by vapier
Branch: MAIN
Changes since 1.109: +2 -2 lines
allow -mschedule for hppa

1 vapier 1.108 # Copyright 1999-2006 Gentoo Foundation
2 verwilst 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.110 # $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.109 2006/07/16 05:49:47 vapier Exp $
4 vapier 1.108 #
5     # Maintainer: base-system@gentoo.org
6 vapier 1.63
7 vapier 1.72 # need access to emktemp()
8 eradicator 1.80 inherit eutils toolchain-funcs multilib
9 vapier 1.72
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 1.70 #### replace-cpu-flags <old.cpus> <new.cpu> ###
22 vapier 1.37 # Replace march/mcpu flags that specify <old.cpus>
23     # with flags that specify <new.cpu>
24     #
25 kevquinn 1.105 #### is-flag[q] <flag> ####
26 danarmak 1.7 # Returns "true" if flag is set in C[XX]FLAGS
27 vapier 1.18 # Matches only complete a flag
28 kevquinn 1.105 # q version sets return code but doesn't echo
29     #
30     #### is-ldflag[q] <flag> ####
31     # Returns "true" if flag is set in LDFLAGS
32     # Matches only complete a flag
33     # q version sets return code but doesn't echo
34 danarmak 1.7 #
35 azarah 1.8 #### strip-flags ####
36     # Strip C[XX]FLAGS of everything except known
37     # good options.
38     #
39 puggy 1.29 #### strip-unsupported-flags ####
40     # Strip C[XX]FLAGS of any flags not supported by
41     # installed version of gcc
42     #
43 vapier 1.10 #### get-flag <flag> ####
44     # Find and echo the value for a particular flag
45     #
46 joker 1.16 #### replace-sparc64-flags ####
47     # Sets mcpu to v8 and uses the original value
48     # as mtune if none specified.
49     #
50 vapier 1.26 #### filter-mfpmath <math types> ####
51     # Remove specified math types from the fpmath specification
52     # If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
53     # will leave the user with -mfpmath=386
54 solar 1.27 #
55     #### append-ldflags ####
56     # Add extra flags to your current LDFLAGS
57     #
58 solar 1.41 #### filter-ldflags <flags> ####
59     # Remove particular flags from LDFLAGS
60     # Matches only complete flags
61     #
62 flameeyes 1.94 #### bindnow-flags ####
63     # Returns the flags to enable "now" binding in the current selected linker.
64 kevquinn 1.92 #
65     ################ DEPRECATED functions ################
66     # The following are still present to avoid breaking existing
67     # code more than necessary; however they are deprecated. Please
68     # use gcc-specs-* from toolchain-funcs.eclass instead, if you
69     # need to know which hardened techs are active in the compiler.
70     # See bug #100974
71     #
72     #### has_hardened ####
73     # Returns true if the compiler has 'Hardened' in its version string,
74     # (note; switched-spec vanilla compilers satisfy this condition) or
75     # the specs file name contains 'hardened'.
76     #
77     #### has_pie ####
78     # Returns true if the compiler by default or with current CFLAGS
79     # builds position-independent code.
80     #
81 solar 1.86 #### has_pic ####
82     # Returns true if the compiler by default or with current CFLAGS
83     # builds position-independent code.
84     #
85     #### has_ssp_all ####
86     # Returns true if the compiler by default or with current CFLAGS
87     # generates stack smash protections for all functions
88     #
89     #### has_ssp ####
90     # Returns true if the compiler by default or with current CFLAGS
91     # generates stack smash protections for most vulnerable functions
92     #
93 verwilst 1.3
94 azarah 1.17 # C[XX]FLAGS that we allow in strip-flags
95 vapier 1.36 setup-allowed-flags() {
96 vapier 1.84 if [[ -z ${ALLOWED_FLAGS} ]] ; then
97 vapier 1.76 export ALLOWED_FLAGS="-pipe"
98     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
99 vapier 1.87 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
100     export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
101 kevquinn 1.105 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
102 vapier 1.76 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
103 vapier 1.107 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
104 vapier 1.44 fi
105 vapier 1.65 # allow a bunch of flags that negate features / control ABI
106     ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
107 vapier 1.87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
108     -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
109     -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
110     -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
111 vapier 1.110 -mieee -mieee-with-inexact -mschedule \
112 vapier 1.91 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
113 vapier 1.87 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
114     -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
115     -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
116 vapier 1.36
117     # C[XX]FLAGS that we are think is ok, but needs testing
118     # NOTE: currently -Os have issues with gcc3 and K6* arch's
119 vapier 1.106 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
120 vapier 1.36 return 0
121 aliz 1.24 }
122 verwilst 1.13
123 kevquinn 1.105 # inverted filters for hardened compiler. This is trying to unpick
124     # the hardened compiler defaults.
125     _filter-hardened() {
126     local f
127     for f in "$@" ; do
128     case "${f}" in
129     # Ideally we should only concern ourselves with PIE flags,
130     # not -fPIC or -fpic, but too many places filter -fPIC without
131     # thinking about -fPIE.
132     -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
133     gcc-specs-pie || continue
134     is-flagq -nopie || append-flags -nopie;;
135     -fstack-protector)
136     gcc-specs-ssp || continue
137     is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
138     -fstack-protector-all)
139     gcc-specs-ssp-to-all || continue
140     is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
141 solar 1.27 esac
142     done
143 kevquinn 1.105 }
144    
145     # Remove occurrences of strings from variable given in $1
146     # Strings removed are matched as globs, so for example
147     # '-O*' would remove -O1, -O2 etc.
148     _filter-var() {
149     local f x VAR VAL
150     declare -a new
151 vapier 1.36
152 kevquinn 1.105 VAR=$1
153     shift
154     eval VAL=\${${VAR}}
155     for f in ${VAL}; do
156     for x in "$@"; do
157     # Note this should work with globs like -O*
158     [[ ${f} == ${x} ]] && continue 2
159 agriffis 1.61 done
160 kevquinn 1.105 eval new\[\${\#new\[@]}]=\${f}
161 verwilst 1.1 done
162 kevquinn 1.105 eval export ${VAR}=\${new\[*]}
163     }
164 agriffis 1.61
165 kevquinn 1.105 filter-flags() {
166     _filter-hardened "$@"
167     _filter-var CFLAGS "$@"
168     _filter-var CXXFLAGS "$@"
169 vapier 1.36 return 0
170 verwilst 1.2 }
171    
172 vapier 1.40 filter-lfs-flags() {
173 vapier 1.93 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
174 vapier 1.40 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
175     }
176    
177 vapier 1.48 append-lfs-flags() {
178 vapier 1.93 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
179 vapier 1.48 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
180     }
181    
182 vapier 1.18 append-flags() {
183 solar 1.82 [[ -z $* ]] && return 0
184 agriffis 1.58 export CFLAGS="${CFLAGS} $*"
185     export CXXFLAGS="${CXXFLAGS} $*"
186 vapier 1.28 return 0
187 verwilst 1.1 }
188    
189 vapier 1.18 replace-flags() {
190 vapier 1.93 [[ $# != 2 ]] \
191     && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
192     && die "replace-flags takes 2 arguments, not $#"
193    
194 mr_bones_ 1.83 local f fset
195 agriffis 1.64 declare -a new_CFLAGS new_CXXFLAGS
196    
197     for fset in CFLAGS CXXFLAGS; do
198     # Looping over the flags instead of using a global
199     # substitution ensures that we're working with flag atoms.
200     # Otherwise globs like -O* have the potential to wipe out the
201     # list of flags.
202     for f in ${!fset}; do
203     # Note this should work with globs like -O*
204     [[ ${f} == ${1} ]] && f=${2}
205     eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
206     done
207     eval export ${fset}=\${new_${fset}\[*]}
208     done
209    
210 vapier 1.28 return 0
211 danarmak 1.7 }
212    
213 vapier 1.37 replace-cpu-flags() {
214 vapier 1.70 local newcpu="$#" ; newcpu="${!newcpu}"
215     while [ $# -gt 1 ] ; do
216 agriffis 1.64 # quote to make sure that no globbing is done (particularly on
217     # ${oldcpu} prior to calling replace-flags
218 vapier 1.70 replace-flags "-march=${1}" "-march=${newcpu}"
219     replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
220     replace-flags "-mtune=${1}" "-mtune=${newcpu}"
221     shift
222 vapier 1.37 done
223     return 0
224     }
225    
226 kevquinn 1.105 is-flagq() {
227     local x
228    
229     for x in ${CFLAGS} ${CXXFLAGS} ; do
230     # Note this should work with globs like -mcpu=ultrasparc*
231     if [[ ${x} == ${1} ]]; then
232     return 0
233     fi
234     done
235     return 1
236     }
237    
238 danarmak 1.7 is-flag() {
239 kevquinn 1.105 if is-flagq ${1}; then
240     echo true
241     return 0
242     fi
243     return 1
244     }
245    
246     is-ldflagq() {
247 agriffis 1.58 local x
248    
249 kevquinn 1.105 for x in ${LDFLAGS} ; do
250 agriffis 1.67 # Note this should work with globs like -mcpu=ultrasparc*
251     if [[ ${x} == ${1} ]]; then
252 vapier 1.18 return 0
253     fi
254 danarmak 1.7 done
255 vapier 1.18 return 1
256 verwilst 1.1 }
257 azarah 1.8
258 kevquinn 1.105 is-ldflag() {
259     if is-ldflagq ${1}; then
260     echo true
261     return 0
262     fi
263     return 1
264     }
265    
266 vapier 1.36 filter-mfpmath() {
267 agriffis 1.58 local orig_mfpmath new_math prune_math
268    
269 vapier 1.36 # save the original -mfpmath flag
270 vapier 1.109 orig_mfpmath=$(get-flag -mfpmath)
271 vapier 1.36 # get the value of the current -mfpmath flag
272 vapier 1.109 new_math=$(get-flag mfpmath)
273     new_math=" ${new_math//,/ } "
274 vapier 1.36 # figure out which math values are to be removed
275 agriffis 1.58 prune_math=""
276 vapier 1.36 for prune_math in "$@" ; do
277 vapier 1.109 new_math=${new_math/ ${prune_math} / }
278 vapier 1.36 done
279 vapier 1.109 new_math=$(echo ${new_math})
280     new_math=${new_math// /,}
281 vapier 1.36
282 vapier 1.109 if [[ -z ${new_math} ]] ; then
283 vapier 1.36 # if we're removing all user specified math values are
284     # slated for removal, then we just filter the flag
285     filter-flags ${orig_mfpmath}
286     else
287     # if we only want to filter some of the user specified
288     # math values, then we replace the current flag
289     replace-flags ${orig_mfpmath} -mfpmath=${new_math}
290     fi
291     return 0
292     }
293    
294 azarah 1.8 strip-flags() {
295 agriffis 1.58 local x y flag NEW_CFLAGS NEW_CXXFLAGS
296    
297 vapier 1.36 setup-allowed-flags
298    
299 azarah 1.8 local NEW_CFLAGS=""
300     local NEW_CXXFLAGS=""
301    
302 azarah 1.17 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
303 vapier 1.84 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
304 azarah 1.17 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
305     fi
306    
307 agriffis 1.58 set -f # disable pathname expansion
308 azarah 1.8
309 agriffis 1.58 for x in ${CFLAGS}; do
310     for y in ${ALLOWED_FLAGS}; do
311 lostlogic 1.14 flag=${x%%=*}
312 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
313 lostlogic 1.14 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
314     break
315 azarah 1.8 fi
316     done
317     done
318    
319 agriffis 1.58 for x in ${CXXFLAGS}; do
320     for y in ${ALLOWED_FLAGS}; do
321 lostlogic 1.14 flag=${x%%=*}
322 vapier 1.65 if [ "${flag%%${y}}" = "" ] ; then
323 lostlogic 1.14 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
324     break
325 azarah 1.8 fi
326     done
327     done
328 azarah 1.30
329     # In case we filtered out all optimization flags fallback to -O2
330     if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
331     NEW_CFLAGS="${NEW_CFLAGS} -O2"
332     fi
333     if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
334     NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
335     fi
336 azarah 1.8
337 agriffis 1.58 set +f # re-enable pathname expansion
338 azarah 1.8
339     export CFLAGS="${NEW_CFLAGS}"
340     export CXXFLAGS="${NEW_CXXFLAGS}"
341 vapier 1.36 return 0
342 puggy 1.29 }
343    
344 azarah 1.96 test-flag-PROG() {
345     local comp=$1
346     local flags="$2"
347    
348     [[ -z ${comp} || -z ${flags} ]] && \
349     return 1
350    
351     local PROG=$(tc-get${comp})
352     ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
353     > /dev/null 2>&1
354     }
355    
356     # Returns true if C compiler support given flag
357     test-flag-CC() { test-flag-PROG "CC" "$1"; }
358    
359     # Returns true if C++ compiler support given flag
360     test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
361    
362 azarah 1.99 test-flags-PROG() {
363     local comp=$1
364     local flags
365 azarah 1.96 local x
366 azarah 1.99
367     shift
368    
369     [[ -z ${comp} ]] && \
370     return 1
371 swegener 1.101
372 azarah 1.96 for x in "$@" ; do
373 azarah 1.99 test-flag-${comp} "${x}" && flags="${flags} ${x}"
374 azarah 1.96 done
375    
376 azarah 1.99 echo "${flags}"
377 azarah 1.96
378 azarah 1.99 # Just bail if we dont have any flags
379     [[ -n ${flags} ]]
380 azarah 1.96 }
381    
382 azarah 1.99 # Returns (echo's) the given flags supported by the C compiler
383     test-flags-CC() { test-flags-PROG "CC" "$@"; }
384    
385     # Returns (echo's) the given flags supported by the C++ compiler
386     test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
387    
388     # Short-hand that should hopefully work for both C and C++ compiler, but
389 azarah 1.100 # its really only present due to the append-flags() abomination.
390 azarah 1.99 test-flags() { test-flags-CC "$@"; }
391    
392 kevquinn 1.105 # Depriciated, use test-flags()
393 vapier 1.36 test_flag() {
394 kevquinn 1.104 ewarn "test_flag: deprecated, please use test-flags()!" >&2
395 azarah 1.96
396 azarah 1.99 test-flags-CC "$@"
397 puggy 1.29 }
398    
399 agriffis 1.58 test_version_info() {
400 vapier 1.75 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
401 agriffis 1.58 return 0
402     else
403     return 1
404     fi
405     }
406    
407 puggy 1.29 strip-unsupported-flags() {
408 vapier 1.95 local x NEW_CFLAGS NEW_CXXFLAGS
409 agriffis 1.58
410 vapier 1.36 for x in ${CFLAGS} ; do
411 azarah 1.96 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
412 puggy 1.29 done
413 vapier 1.36 for x in ${CXXFLAGS} ; do
414 azarah 1.96 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
415 puggy 1.29 done
416    
417 vapier 1.95 export CFLAGS=${NEW_CFLAGS}
418     export CXXFLAGS=${NEW_CXXFLAGS}
419 azarah 1.8 }
420    
421 vapier 1.10 get-flag() {
422 agriffis 1.58 local f findflag="$1"
423    
424 vapier 1.36 # this code looks a little flaky but seems to work for
425     # everything we want ...
426     # for example, if CFLAGS="-march=i686":
427 agriffis 1.58 # `get-flag -march` == "-march=i686"
428     # `get-flag march` == "i686"
429 vapier 1.10 for f in ${CFLAGS} ${CXXFLAGS} ; do
430     if [ "${f/${findflag}}" != "${f}" ] ; then
431 agriffis 1.58 printf "%s\n" "${f/-${findflag}=}"
432 vapier 1.28 return 0
433 vapier 1.10 fi
434     done
435 vapier 1.28 return 1
436 joker 1.16 }
437    
438 kevquinn 1.92 # DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
439 solar 1.53 has_hardened() {
440 kevquinn 1.104 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
441 swegener 1.101
442 lv 1.69 test_version_info Hardened && return 0
443 azarah 1.96 # The specs file wont exist unless gcc has GCC_SPECS support
444     [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
445 solar 1.53 }
446    
447 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
448 solar 1.81 # indicate whether PIC is set
449 tseng 1.42 has_pic() {
450 kevquinn 1.104 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
451 swegener 1.101
452 azarah 1.96 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
453 kevquinn 1.105 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
454     gcc-specs-pie
455 tseng 1.42 }
456    
457 kevquinn 1.92 # DEPRECATED - use gcc-specs-pie from toolchain-funcs
458 solar 1.81 # indicate whether PIE is set
459 mr_bones_ 1.83 has_pie() {
460 kevquinn 1.104 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
461 swegener 1.101
462 azarah 1.96 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
463 kevquinn 1.105 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
464     gcc-specs-pie
465 tseng 1.42 }
466 mr_bones_ 1.83
467 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
468 solar 1.86 # indicate whether code for SSP is being generated for all functions
469     has_ssp_all() {
470 kevquinn 1.104 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
471 swegener 1.101
472 solar 1.86 # note; this matches only -fstack-protector-all
473 azarah 1.96 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
474     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
475 kevquinn 1.105 gcc-specs-ssp-all
476 solar 1.86 }
477    
478 kevquinn 1.92 # DEPRECATED - use gcc-specs-ssp from toolchain-funcs
479 solar 1.81 # indicate whether code for SSP is being generated
480 tseng 1.42 has_ssp() {
481 kevquinn 1.104 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
482 swegener 1.101
483 solar 1.81 # note; this matches both -fstack-protector and -fstack-protector-all
484 azarah 1.96 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
485     -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
486     gcc-specs-ssp
487 tseng 1.42 }
488    
489 lv 1.56 has_m64() {
490 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
491     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
492     # please dont replace this function with test_flag in some future
493     # clean-up!
494 swegener 1.101
495 vapier 1.72 local temp="$(emktemp)"
496 azarah 1.96 echo "int main() { return(0); }" > "${temp}".c
497 kugelfang 1.74 MY_CC=$(tc-getCC)
498 azarah 1.96 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
499 vapier 1.72 local ret=$?
500 azarah 1.96 rm -f "${temp}".c
501     [[ ${ret} != 1 ]] && return 0
502 lv 1.62 return 1
503 lv 1.56 }
504    
505     has_m32() {
506 lv 1.62 # this doesnt test if the flag is accepted, it tests if the flag
507     # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
508     # please dont replace this function with test_flag in some future
509     # clean-up!
510 eradicator 1.80
511     [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
512    
513 vapier 1.95 local temp=$(emktemp)
514     echo "int main() { return(0); }" > "${temp}".c
515 kugelfang 1.74 MY_CC=$(tc-getCC)
516 vapier 1.95 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
517 vapier 1.72 local ret=$?
518 vapier 1.95 rm -f "${temp}".c
519 azarah 1.96 [[ ${ret} != 1 ]] && return 0
520 lv 1.62 return 1
521 lv 1.56 }
522    
523 vapier 1.18 replace-sparc64-flags() {
524 fmccor 1.98 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
525 joker 1.16
526 mr_bones_ 1.83 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
527 agriffis 1.58 for x in ${SPARC64_CPUS}; do
528 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
529     done
530 mr_bones_ 1.83 else
531 agriffis 1.58 for x in ${SPARC64_CPUS}; do
532 joker 1.16 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
533     done
534     fi
535 mr_bones_ 1.83
536     if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
537 agriffis 1.58 for x in ${SPARC64_CPUS}; do
538 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
539     done
540     else
541 agriffis 1.58 for x in ${SPARC64_CPUS}; do
542 joker 1.16 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
543     done
544     fi
545 vapier 1.59
546     export CFLAGS CXXFLAGS
547 solar 1.27 }
548    
549     append-ldflags() {
550 kevquinn 1.105 [[ -z $* ]] && return 0
551 vapier 1.59 export LDFLAGS="${LDFLAGS} $*"
552 vapier 1.28 return 0
553 solar 1.27 }
554    
555 kevquinn 1.105 # Remove flags from LDFLAGS - it's up to the ebuild to filter
556     # CFLAGS and CXXFLAGS via filter-flags if they need to.
557 solar 1.41 filter-ldflags() {
558 kevquinn 1.105 _filter-var LDFLAGS "$@"
559 solar 1.41 return 0
560     }
561    
562 kevquinn 1.105 # Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
563     # are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
564     # to gcc where it needs the '-Wl,'.
565 vapier 1.102 raw-ldflags() {
566     local x input="$@"
567     [[ -z ${input} ]] && input=${LDFLAGS}
568     set --
569     for x in ${input} ; do
570 vapier 1.103 x=${x#-Wl,}
571     set -- "$@" ${x//,/ }
572 vapier 1.102 done
573     echo "$@"
574     }
575    
576 vapier 1.73 # This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
577     # bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
578     # fixes.
579     #
580     # Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
581     gcc2-flags() {
582 vapier 1.85 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
583     CFLAGS=${CFLAGS//-mtune=/-mcpu=}
584     CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
585 vapier 1.73 fi
586    
587 vapier 1.85 replace-cpu-flags k6-{2,3} k6
588     replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
589    
590     replace-cpu-flags pentium-mmx i586
591     replace-cpu-flags pentium{2,3,4} i686
592    
593     replace-cpu-flags ev6{7,8} ev6
594    
595 vapier 1.73 export CFLAGS CXXFLAGS
596     }
597 flameeyes 1.94
598     # Gets the flags needed for "NOW" binding
599     bindnow-flags() {
600     case $($(tc-getLD) -v 2>&1 </dev/null) in
601     *GNU* | *'with BFD'*) # GNU ld
602     echo "-Wl,-z,now" ;;
603     *Apple*) # Darwin ld
604     echo "-bind_at_load" ;;
605     *)
606     # Some linkers just recognize -V instead of -v
607     case $($(tc-getLD) -V 2>&1 </dev/null) in
608     *Solaris*) # Solaris accept almost the same GNU options
609     echo "-Wl,-z,now" ;;
610     esac
611     ;;
612     esac
613     }

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