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Revision 1.11 Revision 1.109
1# Copyright 1999-2002 Gentoo Technologies, Inc. 1# Copyright 1999-2006 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# Author Bart Verwilst <verwilst@gentoo.org>
4# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.11 2002/12/22 12:11:56 cretin Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.109 2006/07/16 05:49:47 vapier Exp $
5
6ECLASS=flag-o-matic
7INHERITED="$INHERITED $ECLASS"
8
9# 4#
5# Maintainer: base-system@gentoo.org
6
7# need access to emktemp()
8inherit eutils toolchain-funcs multilib
9
10#
10#### filter-flags <flag> #### 11#### filter-flags <flags> ####
11# Remove particular flags from C[XX]FLAGS 12# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags
12# 14#
13#### append-flags <flag> #### 15#### append-flags <flags> ####
14# Add extra flags to your current C[XX]FLAGS 16# Add extra flags to your current C[XX]FLAGS
15# 17#
16#### replace-flags <orig.flag> <new.flag> ### 18#### replace-flags <orig.flag> <new.flag> ###
17# Replace a flag by another one 19# Replace a flag by another one
18# 20#
21#### replace-cpu-flags <old.cpus> <new.cpu> ###
22# Replace march/mcpu flags that specify <old.cpus>
23# with flags that specify <new.cpu>
24#
19#### is-flag <flag> #### 25#### is-flag[q] <flag> ####
20# Returns "true" if flag is set in C[XX]FLAGS 26# Returns "true" if flag is set in C[XX]FLAGS
21# Matches only complete flag 27# Matches only complete a flag
28# 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
22# 34#
23#### strip-flags #### 35#### strip-flags ####
24# Strip C[XX]FLAGS of everything except known 36# Strip C[XX]FLAGS of everything except known
25# good options. 37# good options.
26# 38#
39#### strip-unsupported-flags ####
40# Strip C[XX]FLAGS of any flags not supported by
41# installed version of gcc
42#
27#### get-flag <flag> #### 43#### get-flag <flag> ####
28# Find and echo the value for a particular flag 44# Find and echo the value for a particular flag
29# 45#
46#### replace-sparc64-flags ####
47# Sets mcpu to v8 and uses the original value
48# as mtune if none specified.
49#
50#### 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#
55#### append-ldflags ####
56# Add extra flags to your current LDFLAGS
57#
58#### filter-ldflags <flags> ####
59# Remove particular flags from LDFLAGS
60# Matches only complete flags
61#
62#### bindnow-flags ####
63# Returns the flags to enable "now" binding in the current selected linker.
64#
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#### 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#
30 93
94# C[XX]FLAGS that we allow in strip-flags
95setup-allowed-flags() {
96 if [[ -z ${ALLOWED_FLAGS} ]] ; then
97 export ALLOWED_FLAGS="-pipe"
98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-PIE -fno-pie -fno-unit-at-a-time"
102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
103 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
104 fi
105 # allow a bunch of flags that negate features / control ABI
106 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
107 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
108 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
109 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
110 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
111 -mieee -mieee-with-inexact \
112 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
113 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
114 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
115 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
116
117 # C[XX]FLAGS that we are think is ok, but needs testing
118 # NOTE: currently -Os have issues with gcc3 and K6* arch's
119 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
120 return 0
121}
122
123# inverted filters for hardened compiler. This is trying to unpick
124# the hardened compiler defaults.
125_filter-hardened() {
126 local f
127 for f in "$@" ; 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 esac
142 done
143}
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
152 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 done
160 eval new\[\${\#new\[@]}]=\${f}
161 done
162 eval export ${VAR}=\${new\[*]}
163}
164
31filter-flags () { 165filter-flags() {
32 166 _filter-hardened "$@"
33 for x in $1 167 _filter-var CFLAGS "$@"
34 do 168 _filter-var CXXFLAGS "$@"
35 export CFLAGS="${CFLAGS/${x}}" 169 return 0
36 export CXXFLAGS="${CXXFLAGS/${x}}"
37 done
38
39} 170}
40 171
172filter-lfs-flags() {
173 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
174 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
175}
176
177append-lfs-flags() {
178 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
179 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
180}
181
41append-flags () { 182append-flags() {
42 183 [[ -z $* ]] && return 0
43 CFLAGS="${CFLAGS} $1" 184 export CFLAGS="${CFLAGS} $*"
44 CXXFLAGS="${CXXFLAGS} $1" 185 export CXXFLAGS="${CXXFLAGS} $*"
45 186 return 0
46} 187}
47 188
48replace-flags () { 189replace-flags() {
190 [[ $# != 2 ]] \
191 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
192 && die "replace-flags takes 2 arguments, not $#"
49 193
50 CFLAGS="${CFLAGS/${1}/${2} }" 194 local f fset
51 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 195 declare -a new_CFLAGS new_CXXFLAGS
52 196
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 return 0
211}
212
213replace-cpu-flags() {
214 local newcpu="$#" ; newcpu="${!newcpu}"
215 while [ $# -gt 1 ] ; do
216 # quote to make sure that no globbing is done (particularly on
217 # ${oldcpu} prior to calling replace-flags
218 replace-flags "-march=${1}" "-march=${newcpu}"
219 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
220 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
221 shift
222 done
223 return 0
224}
225
226is-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
53} 236}
54 237
55is-flag() { 238is-flag() {
56 239 if is-flagq ${1}; then
57 for x in ${CFLAGS} ${CXXFLAGS}
58 do
59 if [ "${x}" = "$1" ]
60 then
61 echo true 240 echo true
62 break 241 return 0
63 fi 242 fi
64 done 243 return 1
244}
65 245
246is-ldflagq() {
247 local x
248
249 for x in ${LDFLAGS} ; do
250 # Note this should work with globs like -mcpu=ultrasparc*
251 if [[ ${x} == ${1} ]]; then
252 return 0
253 fi
254 done
255 return 1
256}
257
258is-ldflag() {
259 if is-ldflagq ${1}; then
260 echo true
261 return 0
262 fi
263 return 1
264}
265
266filter-mfpmath() {
267 local orig_mfpmath new_math prune_math
268
269 # save the original -mfpmath flag
270 orig_mfpmath=$(get-flag -mfpmath)
271 # get the value of the current -mfpmath flag
272 new_math=$(get-flag mfpmath)
273 new_math=" ${new_math//,/ } "
274 # figure out which math values are to be removed
275 prune_math=""
276 for prune_math in "$@" ; do
277 new_math=${new_math/ ${prune_math} / }
278 done
279 new_math=$(echo ${new_math})
280 new_math=${new_math// /,}
281
282 if [[ -z ${new_math} ]] ; then
283 # 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
66} 292}
67 293
68strip-flags() { 294strip-flags() {
295 local x y flag NEW_CFLAGS NEW_CXXFLAGS
296
297 setup-allowed-flags
69 298
70 local NEW_CFLAGS="" 299 local NEW_CFLAGS=""
71 local NEW_CXXFLAGS="" 300 local NEW_CXXFLAGS=""
72 301
73 local ALLOWED_FLAGS="-O -mcpu -march -pipe -g" 302 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
303 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
304 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
305 fi
74 306
75 set -f 307 set -f # disable pathname expansion
76 308
77 for x in ${CFLAGS} 309 for x in ${CFLAGS}; do
78 do
79 for y in ${ALLOWED_FLAGS} 310 for y in ${ALLOWED_FLAGS}; do
80 do 311 flag=${x%%=*}
81 if [ "${x/${y}}" != "${x}" ] 312 if [ "${flag%%${y}}" = "" ] ; then
82 then
83 if [ -z "${NEW_CFLAGS}" ]
84 then
85 NEW_CFLAGS="${x}"
86 else
87 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 313 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
88 fi 314 break
89 fi 315 fi
90 done 316 done
91 done 317 done
92 318
93 for x in ${CXXFLAGS} 319 for x in ${CXXFLAGS}; do
94 do
95 for y in ${ALLOWED_FLAGS} 320 for y in ${ALLOWED_FLAGS}; do
96 do 321 flag=${x%%=*}
97 if [ "${x/${y}}" != "${x}" ] 322 if [ "${flag%%${y}}" = "" ] ; then
98 then
99 if [ -z "${NEW_CXXFLAGS}" ]
100 then
101 NEW_CXXFLAGS="${x}"
102 else
103 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 323 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
104 fi 324 break
105 fi 325 fi
106 done 326 done
107 done 327 done
108 328
109 set +f 329 # In case we filtered out all optimization flags fallback to -O2
330 if [ "${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="${NEW_CXXFLAGS} -O2"
335 fi
336
337 set +f # re-enable pathname expansion
110 338
111 export CFLAGS="${NEW_CFLAGS}" 339 export CFLAGS="${NEW_CFLAGS}"
112 export CXXFLAGS="${NEW_CXXFLAGS}" 340 export CXXFLAGS="${NEW_CXXFLAGS}"
341 return 0
342}
343
344test-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
357test-flag-CC() { test-flag-PROG "CC" "$1"; }
358
359# Returns true if C++ compiler support given flag
360test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
361
362test-flags-PROG() {
363 local comp=$1
364 local flags
365 local x
366
367 shift
368
369 [[ -z ${comp} ]] && \
370 return 1
371
372 for x in "$@" ; do
373 test-flag-${comp} "${x}" && flags="${flags} ${x}"
374 done
375
376 echo "${flags}"
377
378 # Just bail if we dont have any flags
379 [[ -n ${flags} ]]
380}
381
382# Returns (echo's) the given flags supported by the C compiler
383test-flags-CC() { test-flags-PROG "CC" "$@"; }
384
385# Returns (echo's) the given flags supported by the C++ compiler
386test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
387
388# Short-hand that should hopefully work for both C and C++ compiler, but
389# its really only present due to the append-flags() abomination.
390test-flags() { test-flags-CC "$@"; }
391
392# Depriciated, use test-flags()
393test_flag() {
394 ewarn "test_flag: deprecated, please use test-flags()!" >&2
395
396 test-flags-CC "$@"
397}
398
399test_version_info() {
400 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
401 return 0
402 else
403 return 1
404 fi
405}
406
407strip-unsupported-flags() {
408 local x NEW_CFLAGS NEW_CXXFLAGS
409
410 for x in ${CFLAGS} ; do
411 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
412 done
413 for x in ${CXXFLAGS} ; do
414 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
415 done
416
417 export CFLAGS=${NEW_CFLAGS}
418 export CXXFLAGS=${NEW_CXXFLAGS}
113} 419}
114 420
115get-flag() { 421get-flag() {
116 local findflag="$1" 422 local f findflag="$1"
117 423
424 # this code looks a little flaky but seems to work for
425 # everything we want ...
426 # for example, if CFLAGS="-march=i686":
427 # `get-flag -march` == "-march=i686"
428 # `get-flag march` == "i686"
118 for f in ${CFLAGS} ${CXXFLAGS} ; do 429 for f in ${CFLAGS} ${CXXFLAGS} ; do
119 if [ "${f/${findflag}}" != "${f}" ] ; then 430 if [ "${f/${findflag}}" != "${f}" ] ; then
120 echo "${f/-${findflag}=}" 431 printf "%s\n" "${f/-${findflag}=}"
121 return 432 return 0
122 fi 433 fi
123 done 434 done
435 return 1
124} 436}
437
438# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
439has_hardened() {
440 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" >&2
441
442 test_version_info Hardened && return 0
443 # The specs file wont exist unless gcc has GCC_SPECS support
444 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
445}
446
447# DEPRECATED - use gcc-specs-pie from toolchain-funcs
448# indicate whether PIC is set
449has_pic() {
450 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
451
452 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
453 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
454 gcc-specs-pie
455}
456
457# DEPRECATED - use gcc-specs-pie from toolchain-funcs
458# indicate whether PIE is set
459has_pie() {
460 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
461
462 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
463 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
464 gcc-specs-pie
465}
466
467# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
468# indicate whether code for SSP is being generated for all functions
469has_ssp_all() {
470 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
471
472 # note; this matches only -fstack-protector-all
473 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
474 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
475 gcc-specs-ssp-all
476}
477
478# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
479# indicate whether code for SSP is being generated
480has_ssp() {
481 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >&2
482
483 # note; this matches both -fstack-protector and -fstack-protector-all
484 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
485 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
486 gcc-specs-ssp
487}
488
489has_m64() {
490 # this doesnt test if the flag is accepted, it tests if the flag
491 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
492 # please dont replace this function with test_flag in some future
493 # clean-up!
494
495 local temp="$(emktemp)"
496 echo "int main() { return(0); }" > "${temp}".c
497 MY_CC=$(tc-getCC)
498 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
499 local ret=$?
500 rm -f "${temp}".c
501 [[ ${ret} != 1 ]] && return 0
502 return 1
503}
504
505has_m32() {
506 # this doesnt test if the flag is accepted, it tests if the flag
507 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
508 # please dont replace this function with test_flag in some future
509 # clean-up!
510
511 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
512
513 local temp=$(emktemp)
514 echo "int main() { return(0); }" > "${temp}".c
515 MY_CC=$(tc-getCC)
516 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
517 local ret=$?
518 rm -f "${temp}".c
519 [[ ${ret} != 1 ]] && return 0
520 return 1
521}
522
523replace-sparc64-flags() {
524 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
525
526 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
527 for x in ${SPARC64_CPUS}; do
528 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
529 done
530 else
531 for x in ${SPARC64_CPUS}; do
532 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
533 done
534 fi
535
536 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
537 for x in ${SPARC64_CPUS}; do
538 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
539 done
540 else
541 for x in ${SPARC64_CPUS}; do
542 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
543 done
544 fi
545
546 export CFLAGS CXXFLAGS
547}
548
549append-ldflags() {
550 [[ -z $* ]] && return 0
551 export LDFLAGS="${LDFLAGS} $*"
552 return 0
553}
554
555# Remove flags from LDFLAGS - it's up to the ebuild to filter
556# CFLAGS and CXXFLAGS via filter-flags if they need to.
557filter-ldflags() {
558 _filter-var LDFLAGS "$@"
559 return 0
560}
561
562# 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,'.
565raw-ldflags() {
566 local x input="$@"
567 [[ -z ${input} ]] && input=${LDFLAGS}
568 set --
569 for x in ${input} ; do
570 x=${x#-Wl,}
571 set -- "$@" ${x//,/ }
572 done
573 echo "$@"
574}
575
576# 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
581gcc2-flags() {
582 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
583 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
584 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
585 fi
586
587 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 export CFLAGS CXXFLAGS
596}
597
598# Gets the flags needed for "NOW" binding
599bindnow-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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