/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.82 Revision 1.96
1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2005 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# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.82 2005/02/07 17:50:24 solar Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.96 2005/12/08 12:16:12 azarah Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
6 4
7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS"
9
10IUSE="debug"
11 5
12# need access to emktemp() 6# need access to emktemp()
13inherit eutils toolchain-funcs multilib 7inherit eutils toolchain-funcs multilib
14 8
15# 9#
63# -fno-stack-protector to {C,CXX,LD}FLAGS 57# -fno-stack-protector to {C,CXX,LD}FLAGS
64# when a package is filtering -fstack-protector, -fstack-protector-all 58# when a package is filtering -fstack-protector, -fstack-protector-all
65# notice: modern automatic specs files will also suppress -fstack-protector-all 59# notice: modern automatic specs files will also suppress -fstack-protector-all
66# when only -fno-stack-protector is given 60# when only -fno-stack-protector is given
67# 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#
68 93
69# C[XX]FLAGS that we allow in strip-flags 94# C[XX]FLAGS that we allow in strip-flags
70setup-allowed-flags() { 95setup-allowed-flags() {
71 if [ -z "${ALLOWED_FLAGS}" ] ; then 96 if [[ -z ${ALLOWED_FLAGS} ]] ; then
72 export ALLOWED_FLAGS="-pipe" 97 export ALLOWED_FLAGS="-pipe"
73 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
74 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector" 99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
75 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" 101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
76 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3" 102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
77 case "${ARCH}" in
78 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
79 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
80 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
81 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
82 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
83 sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;;
84 ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;;
85 esac
86 fi 103 fi
87 # allow a bunch of flags that negate features / control ABI 104 # allow a bunch of flags that negate features / control ABI
88 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" 105 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
89 case "${ARCH}" in 106 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
90 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; 107 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
91 esac 108 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
92 ALLOWED_FLAGS="${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" 109 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
110 -mieee -mieee-with-inexact \
111 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
112 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
113 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
93 115
94 # C[XX]FLAGS that we are think is ok, but needs testing 116 # C[XX]FLAGS that we are think is ok, but needs testing
95 # NOTE: currently -Os have issues with gcc3 and K6* arch's 117 # NOTE: currently -Os have issues with gcc3 and K6* arch's
96 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 118 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
97 return 0 119 return 0
98} 120}
99 121
100filter-flags() { 122filter-flags() {
101 local x f fset 123 local x f fset
102 declare -a new_CFLAGS new_CXXFLAGS 124 declare -a new_CFLAGS new_CXXFLAGS
103 125
104 for x in "$@" ; do 126 for x in "$@" ; do
105 case "${x}" in 127 case "${x}" in
106 -fPIC|-fpic|-fPIE|-fpie|-pie) 128 -fPIC|-fpic|-fPIE|-fpie|-pie)
127 149
128 return 0 150 return 0
129} 151}
130 152
131filter-lfs-flags() { 153filter-lfs-flags() {
154 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
132 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 155 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
133} 156}
134 157
135append-lfs-flags() { 158append-lfs-flags() {
159 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
136 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 160 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
137} 161}
138 162
139append-flags() { 163append-flags() {
140 [[ -z $* ]] && return 0 164 [[ -z $* ]] && return 0
144 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags 168 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
145 return 0 169 return 0
146} 170}
147 171
148replace-flags() { 172replace-flags() {
173 [[ $# != 2 ]] \
174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
175 && die "replace-flags takes 2 arguments, not $#"
176
149 local f fset 177 local f fset
150 declare -a new_CFLAGS new_CXXFLAGS 178 declare -a new_CFLAGS new_CXXFLAGS
151 179
152 for fset in CFLAGS CXXFLAGS; do 180 for fset in CFLAGS CXXFLAGS; do
153 # Looping over the flags instead of using a global 181 # Looping over the flags instead of using a global
154 # substitution ensures that we're working with flag atoms. 182 # substitution ensures that we're working with flag atoms.
224 252
225 local NEW_CFLAGS="" 253 local NEW_CFLAGS=""
226 local NEW_CXXFLAGS="" 254 local NEW_CXXFLAGS=""
227 255
228 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 256 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
229 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then 257 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
230 use debug && einfo "Enabling the use of some unstable flags"
231 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 258 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
232 fi 259 fi
233 260
234 set -f # disable pathname expansion 261 set -f # disable pathname expansion
235 262
266 export CFLAGS="${NEW_CFLAGS}" 293 export CFLAGS="${NEW_CFLAGS}"
267 export CXXFLAGS="${NEW_CXXFLAGS}" 294 export CXXFLAGS="${NEW_CXXFLAGS}"
268 return 0 295 return 0
269} 296}
270 297
298test-flag-PROG() {
299 local comp=$1
300 local flags="$2"
301
302 [[ -z ${comp} || -z ${flags} ]] && \
303 return 1
304
305 local PROG=$(tc-get${comp})
306 ${PROG} ${flags} -S -o /dev/null -xc /dev/null \
307 > /dev/null 2>&1
308}
309
310# Returns true if C compiler support given flag
311test-flag-CC() { test-flag-PROG "CC" "$1"; }
312
313# Returns true if C++ compiler support given flag
314test-flag-CXX() { test-flag-PROG "CXX" "$1"; }
315
316test-flags() {
317 local x
318
319 for x in "$@" ; do
320 test-flag-CC "${x}" || return 1
321 done
322
323 echo "$@"
324
325 return 0
326}
327
328# Depriciated, use test-flags()
271test_flag() { 329test_flag() {
272 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then 330 ewarn "test_flag: deprecated, please use test-flags()!" >/dev/stderr
273 printf "%s\n" "$*" 331
274 return 0 332 test-flags "$@"
275 fi
276 return 1
277} 333}
278 334
279test_version_info() { 335test_version_info() {
280 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then 336 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
281 return 0 337 return 0
283 return 1 339 return 1
284 fi 340 fi
285} 341}
286 342
287strip-unsupported-flags() { 343strip-unsupported-flags() {
288 local NEW_CFLAGS NEW_CXXFLAGS 344 local x NEW_CFLAGS NEW_CXXFLAGS
289 345
290 for x in ${CFLAGS} ; do 346 for x in ${CFLAGS} ; do
291 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" 347 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
292 done 348 done
293 for x in ${CXXFLAGS} ; do 349 for x in ${CXXFLAGS} ; do
294 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" 350 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
295 done 351 done
296 352
297 export CFLAGS="${NEW_CFLAGS}" 353 export CFLAGS=${NEW_CFLAGS}
298 export CXXFLAGS="${NEW_CXXFLAGS}" 354 export CXXFLAGS=${NEW_CXXFLAGS}
299} 355}
300 356
301get-flag() { 357get-flag() {
302 local f findflag="$1" 358 local f findflag="$1"
303 359
313 fi 369 fi
314 done 370 done
315 return 1 371 return 1
316} 372}
317 373
374# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
318has_hardened() { 375has_hardened() {
376 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" \
377 >/dev/stderr
378
319 test_version_info Hardened && return 0 379 test_version_info Hardened && return 0
320 # the specs file wont exist unless gcc has GCC_SPECS support 380 # The specs file wont exist unless gcc has GCC_SPECS support
321 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ 381 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
322 return 0
323 return 1
324} 382}
325 383
384# DEPRECATED - use gcc-specs-pie from toolchain-funcs
326# indicate whether PIC is set 385# indicate whether PIC is set
327has_pic() { 386has_pic() {
328 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 387 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >/dev/stderr
329 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 388
389 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
390 ${CFLAGS/-fpic} != ${CFLAGS} || \
330 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 391 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
331 test_version_info pie && return 0
332 return 1
333} 392}
334 393
394# DEPRECATED - use gcc-specs-pie from toolchain-funcs
335# indicate whether PIE is set 395# indicate whether PIE is set
336has_pie() { 396has_pie() {
337 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 397 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >/dev/stderr
338 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 398
399 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
400 ${CFLAGS/-fpie} != ${CFLAGS} || \
401 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \
339 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0 402 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
340 # test PIC while waiting for specs to be updated to generate __PIE__ 403 # test PIC while waiting for specs to be updated to generate __PIE__
404}
405
406# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
407# indicate whether code for SSP is being generated for all functions
408has_ssp_all() {
409 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
410
411 # note; this matches only -fstack-protector-all
412 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
341 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0 413 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
342 return 1 414 gcc-specs-ssp
343} 415}
344 416
417# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
345# indicate whether code for SSP is being generated 418# indicate whether code for SSP is being generated
346has_ssp() { 419has_ssp() {
420 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
421
347 # note; this matches both -fstack-protector and -fstack-protector-all 422 # note; this matches both -fstack-protector and -fstack-protector-all
348 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 423 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
349 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0 424 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
350 return 1 425 gcc-specs-ssp
351} 426}
352 427
353has_m64() { 428has_m64() {
354 # this doesnt test if the flag is accepted, it tests if the flag 429 # this doesnt test if the flag is accepted, it tests if the flag
355 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 430 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
356 # please dont replace this function with test_flag in some future 431 # please dont replace this function with test_flag in some future
357 # clean-up! 432 # clean-up!
433
358 local temp="$(emktemp)" 434 local temp="$(emktemp)"
359 echo "int main() { return(0); }" > ${temp}.c 435 echo "int main() { return(0); }" > "${temp}".c
360 MY_CC=$(tc-getCC) 436 MY_CC=$(tc-getCC)
361 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 437 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
362 local ret=$? 438 local ret=$?
363 rm -f ${temp}.c 439 rm -f "${temp}".c
364 [ "$ret" != "1" ] && return 0 440 [[ ${ret} != 1 ]] && return 0
365 return 1 441 return 1
366} 442}
367 443
368has_m32() { 444has_m32() {
369 # this doesnt test if the flag is accepted, it tests if the flag 445 # this doesnt test if the flag is accepted, it tests if the flag
371 # please dont replace this function with test_flag in some future 447 # please dont replace this function with test_flag in some future
372 # clean-up! 448 # clean-up!
373 449
374 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0 450 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
375 451
376 local temp="$(emktemp)" 452 local temp=$(emktemp)
377 echo "int main() { return(0); }" > ${temp}.c 453 echo "int main() { return(0); }" > "${temp}".c
378 MY_CC=$(tc-getCC) 454 MY_CC=$(tc-getCC)
379 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1 455 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
380 local ret=$? 456 local ret=$?
381 rm -f ${temp}.c 457 rm -f "${temp}".c
382 [ "$ret" != "1" ] && return 0 458 [[ ${ret} != 1 ]] && return 0
383 return 1 459 return 1
384} 460}
385 461
386replace-sparc64-flags() { 462replace-sparc64-flags() {
387 local SPARC64_CPUS="ultrasparc v9" 463 local SPARC64_CPUS="ultrasparc v9"
388 464
389 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 465 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
390 for x in ${SPARC64_CPUS}; do 466 for x in ${SPARC64_CPUS}; do
391 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 467 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
392 done 468 done
393 else 469 else
394 for x in ${SPARC64_CPUS}; do 470 for x in ${SPARC64_CPUS}; do
395 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 471 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
396 done 472 done
397 fi 473 fi
398 474
399 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 475 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
400 for x in ${SPARC64_CPUS}; do 476 for x in ${SPARC64_CPUS}; do
401 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 477 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
402 done 478 done
403 else 479 else
404 for x in ${SPARC64_CPUS}; do 480 for x in ${SPARC64_CPUS}; do
419 495
420 # we do this fancy spacing stuff so as to not filter 496 # we do this fancy spacing stuff so as to not filter
421 # out part of a flag ... we want flag atoms ! :D 497 # out part of a flag ... we want flag atoms ! :D
422 LDFLAGS=" ${LDFLAGS} " 498 LDFLAGS=" ${LDFLAGS} "
423 for x in "$@" ; do 499 for x in "$@" ; do
424 LDFLAGS="${LDFLAGS// ${x} / }" 500 LDFLAGS=${LDFLAGS// ${x} / }
425 done 501 done
502 [[ -z ${LDFLAGS// } ]] \
503 && LDFLAGS="" \
426 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 504 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
427 export LDFLAGS 505 export LDFLAGS
428 return 0 506 return 0
429} 507}
430 508
431fstack-flags() { 509fstack-flags() {
432 if has_ssp; then 510 if gcc-specs-ssp; then
433 [ -z "`is-flag -fno-stack-protector`" ] && 511 [ -z "`is-flag -fno-stack-protector`" ] &&
434 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 512 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
435 fi 513 fi
436 return 0 514 return 0
437} 515}
438 516
440# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more 518# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
441# fixes. 519# fixes.
442# 520#
443# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3 521# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
444gcc2-flags() { 522gcc2-flags() {
445 CFLAGS=${CFLAGS//pentium-mmx/i586} 523 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
446 CFLAGS=${CFLAGS//pentium[234]/i686} 524 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
447 CFLAGS=${CFLAGS//k6-[23]/k6} 525 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
448 CFLAGS=${CFLAGS//athlon-tbird/i686}
449 CFLAGS=${CFLAGS//athlon-4/i686}
450 CFLAGS=${CFLAGS//athlon-[xm]p/i686}
451 CFLAGS=${CFLAGS//athlon/i686}
452
453 CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
454 CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
455 CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
456 CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
457 CXXFLAGS=${CXXFLAGS//athlon-4/i686}
458 CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
459 CXXFLAGS=${CXXFLAGS//athlon/i686}
460
461 if [ "$ARCH" = alpha ]; then
462 CHOST=${CHOST/#alphaev6[78]/alphaev6}
463 CFLAGS=${CFLAGS//ev6[78]/ev6}
464 CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
465 fi 526 fi
527
528 replace-cpu-flags k6-{2,3} k6
529 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
530
531 replace-cpu-flags pentium-mmx i586
532 replace-cpu-flags pentium{2,3,4} i686
533
534 replace-cpu-flags ev6{7,8} ev6
466 535
467 export CFLAGS CXXFLAGS 536 export CFLAGS CXXFLAGS
468} 537}
538
539# Gets the flags needed for "NOW" binding
540bindnow-flags() {
541 case $($(tc-getLD) -v 2>&1 </dev/null) in
542 *GNU* | *'with BFD'*) # GNU ld
543 echo "-Wl,-z,now" ;;
544 *Apple*) # Darwin ld
545 echo "-bind_at_load" ;;
546 *)
547 # Some linkers just recognize -V instead of -v
548 case $($(tc-getLD) -V 2>&1 </dev/null) in
549 *Solaris*) # Solaris accept almost the same GNU options
550 echo "-Wl,-z,now" ;;
551 esac
552 ;;
553 esac
554}

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