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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 1.65 2004/07/27 19:25:49 vapier 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 5
10# Please leave ${IUSE} in this until portage .51 is stable, otherwise 6# need access to emktemp()
11# IUSE gets clobbered. 7inherit eutils toolchain-funcs multilib
12IUSE="${IUSE} debug"
13 8
14# 9#
15#### filter-flags <flags> #### 10#### filter-flags <flags> ####
16# Remove particular flags from C[XX]FLAGS 11# Remove particular flags from C[XX]FLAGS
17# Matches only complete flags 12# Matches only complete flags
20# Add extra flags to your current C[XX]FLAGS 15# Add extra flags to your current C[XX]FLAGS
21# 16#
22#### replace-flags <orig.flag> <new.flag> ### 17#### replace-flags <orig.flag> <new.flag> ###
23# Replace a flag by another one 18# Replace a flag by another one
24# 19#
25#### replace-cpu-flags <new.cpu> <old.cpus> ### 20#### replace-cpu-flags <old.cpus> <new.cpu> ###
26# Replace march/mcpu flags that specify <old.cpus> 21# Replace march/mcpu flags that specify <old.cpus>
27# with flags that specify <new.cpu> 22# with flags that specify <new.cpu>
28# 23#
29#### is-flag <flag> #### 24#### is-flag <flag> ####
30# Returns "true" if flag is set in C[XX]FLAGS 25# Returns "true" if flag is set in C[XX]FLAGS
54# Add extra flags to your current LDFLAGS 49# Add extra flags to your current LDFLAGS
55# 50#
56#### filter-ldflags <flags> #### 51#### filter-ldflags <flags> ####
57# Remove particular flags from LDFLAGS 52# Remove particular flags from LDFLAGS
58# Matches only complete flags 53# Matches only complete flags
59#
60#### etexec-flags ####
61# hooked function for hardened gcc that appends
62# -fno-pic to {C,CXX,LD}FLAGS
63# when a package is filtering -fpic, -fPIC, -fpie, -fPIE
64# 54#
65#### fstack-flags #### 55#### fstack-flags ####
66# hooked function for hardened gcc that appends 56# hooked function for hardened gcc that appends
67# -fno-stack-protector to {C,CXX,LD}FLAGS 57# -fno-stack-protector to {C,CXX,LD}FLAGS
68# when a package is filtering -fstack-protector, -fstack-protector-all 58# when a package is filtering -fstack-protector, -fstack-protector-all
69# notice: modern automatic specs files will also suppress -fstack-protector-all 59# notice: modern automatic specs files will also suppress -fstack-protector-all
70# when only -fno-stack-protector is given 60# when only -fno-stack-protector is given
71# 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#
72 93
73# C[XX]FLAGS that we allow in strip-flags 94# C[XX]FLAGS that we allow in strip-flags
74setup-allowed-flags() { 95setup-allowed-flags() {
75 if [ -z "${ALLOWED_FLAGS}" ] ; then 96 if [[ -z ${ALLOWED_FLAGS} ]] ; then
76 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-unit-at-a-time -pipe -g" 97 export ALLOWED_FLAGS="-pipe"
77 case "${ARCH}" in 98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
78 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
79 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;; 100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
80 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;; 101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
81 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 102 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
82 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
83 esac
84 fi 103 fi
85 # allow a bunch of flags that negate features / control ABI 104 # allow a bunch of flags that negate features / control ABI
86 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" 105 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
87 case "${ARCH}" in 106 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
88 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;; 107 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
89 esac 108 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
90 ALLOWED_FLAGS="${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" 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"
91 115
92 # 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
93 # NOTE: currently -Os have issues with gcc3 and K6* arch's 117 # NOTE: currently -Os have issues with gcc3 and K6* arch's
94 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 118 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
95 return 0 119 return 0
96} 120}
97 121
98filter-flags() { 122filter-flags() {
99 local x f fset 123 local x f fset
100 declare -a new_CFLAGS new_CXXFLAGS 124 declare -a new_CFLAGS new_CXXFLAGS
101 125
102 for x in "$@" ; do 126 for x in "$@" ; do
103 case "${x}" in 127 case "${x}" in
104 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 128 -fPIC|-fpic|-fPIE|-fpie|-pie)
129 append-flags `test_flag -fno-pie`;;
105 -fstack-protector|-fstack-protector-all) fstack-flags;; 130 -fstack-protector|-fstack-protector-all)
131 fstack-flags;;
106 esac 132 esac
107 done 133 done
108 134
109 for fset in CFLAGS CXXFLAGS; do 135 for fset in CFLAGS CXXFLAGS; do
110 # Looping over the flags instead of using a global 136 # Looping over the flags instead of using a global
123 149
124 return 0 150 return 0
125} 151}
126 152
127filter-lfs-flags() { 153filter-lfs-flags() {
154 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
128 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
129} 156}
130 157
131append-lfs-flags() { 158append-lfs-flags() {
159 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
132 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
133} 161}
134 162
135append-flags() { 163append-flags() {
164 [[ -z $* ]] && return 0
136 export CFLAGS="${CFLAGS} $*" 165 export CFLAGS="${CFLAGS} $*"
137 export CXXFLAGS="${CXXFLAGS} $*" 166 export CXXFLAGS="${CXXFLAGS} $*"
138 [ -n "`is-flag -fno-stack-protector`" -o \ 167 [ -n "`is-flag -fno-stack-protector`" -o \
139 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags 168 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
140 return 0 169 return 0
141} 170}
142 171
143replace-flags() { 172replace-flags() {
173 [[ $# != 2 ]] \
174 && echo && eerror "Usage: replace-flags <old flag> <new flag>" \
175 && die "replace-flags takes 2 arguments, not $#"
176
144 local f fset 177 local f fset
145 declare -a new_CFLAGS new_CXXFLAGS 178 declare -a new_CFLAGS new_CXXFLAGS
146 179
147 for fset in CFLAGS CXXFLAGS; do 180 for fset in CFLAGS CXXFLAGS; do
148 # Looping over the flags instead of using a global 181 # Looping over the flags instead of using a global
149 # substitution ensures that we're working with flag atoms. 182 # substitution ensures that we're working with flag atoms.
159 192
160 return 0 193 return 0
161} 194}
162 195
163replace-cpu-flags() { 196replace-cpu-flags() {
164 local oldcpu newcpu="$1" ; shift 197 local newcpu="$#" ; newcpu="${!newcpu}"
165 for oldcpu in "$@" ; do 198 while [ $# -gt 1 ] ; do
166 # quote to make sure that no globbing is done (particularly on 199 # quote to make sure that no globbing is done (particularly on
167 # ${oldcpu} prior to calling replace-flags 200 # ${oldcpu} prior to calling replace-flags
168 replace-flags "-march=${oldcpu}" "-march=${newcpu}" 201 replace-flags "-march=${1}" "-march=${newcpu}"
169 replace-flags "-mcpu=${oldcpu}" "-mcpu=${newcpu}" 202 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
170 replace-flags "-mtune=${oldcpu}" "-mtune=${newcpu}" 203 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
204 shift
171 done 205 done
172 return 0 206 return 0
173} 207}
174 208
175is-flag() { 209is-flag() {
176 local x 210 local x
177 211
178 for x in ${CFLAGS} ${CXXFLAGS} ; do 212 for x in ${CFLAGS} ${CXXFLAGS} ; do
213 # Note this should work with globs like -mcpu=ultrasparc*
179 if [ "${x}" == "$1" ] ; then 214 if [[ ${x} == ${1} ]]; then
180 echo true 215 echo true
181 return 0 216 return 0
182 fi 217 fi
183 done 218 done
184 return 1 219 return 1
217 252
218 local NEW_CFLAGS="" 253 local NEW_CFLAGS=""
219 local NEW_CXXFLAGS="" 254 local NEW_CXXFLAGS=""
220 255
221 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 256 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
222 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then 257 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
223 use debug && einfo "Enabling the use of some unstable flags"
224 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 258 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
225 fi 259 fi
226 260
227 set -f # disable pathname expansion 261 set -f # disable pathname expansion
228 262
259 export CFLAGS="${NEW_CFLAGS}" 293 export CFLAGS="${NEW_CFLAGS}"
260 export CXXFLAGS="${NEW_CXXFLAGS}" 294 export CXXFLAGS="${NEW_CXXFLAGS}"
261 return 0 295 return 0
262} 296}
263 297
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()
264test_flag() { 329test_flag() {
265 local cc=${CC:-gcc} ; cc=${cc%% *} 330 ewarn "test_flag: deprecated, please use test-flags()!" >/dev/stderr
266 if ${cc} -S -xc "$@" -o /dev/null /dev/null &>/dev/null; then 331
267 printf "%s\n" "$*" 332 test-flags "$@"
268 return 0
269 fi
270 return 1
271} 333}
272 334
273test_version_info() { 335test_version_info() {
274 local cc=${CC:-gcc} ; cc=${cc%% *}
275 if [[ $(${cc} --version 2>&1) == *$1* ]]; then 336 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
276 return 0 337 return 0
277 else 338 else
278 return 1 339 return 1
279 fi 340 fi
280} 341}
281 342
282strip-unsupported-flags() { 343strip-unsupported-flags() {
283 local NEW_CFLAGS NEW_CXXFLAGS 344 local x NEW_CFLAGS NEW_CXXFLAGS
284 345
285 for x in ${CFLAGS} ; do 346 for x in ${CFLAGS} ; do
286 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" 347 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
287 done 348 done
288 for x in ${CXXFLAGS} ; do 349 for x in ${CXXFLAGS} ; do
289 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" 350 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
290 done 351 done
291 352
292 export CFLAGS="${NEW_CFLAGS}" 353 export CFLAGS=${NEW_CFLAGS}
293 export CXXFLAGS="${NEW_CXXFLAGS}" 354 export CXXFLAGS=${NEW_CXXFLAGS}
294} 355}
295 356
296get-flag() { 357get-flag() {
297 local f findflag="$1" 358 local f findflag="$1"
298 359
308 fi 369 fi
309 done 370 done
310 return 1 371 return 1
311} 372}
312 373
374# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
313has_hardened() { 375has_hardened() {
376 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" \
377 >/dev/stderr
378
314 test_version_info Hardened 379 test_version_info Hardened && return 0
315 return $? 380 # The specs file wont exist unless gcc has GCC_SPECS support
381 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
316} 382}
317 383
384# DEPRECATED - use gcc-specs-pie from toolchain-funcs
385# indicate whether PIC is set
318has_pic() { 386has_pic() {
319 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 387 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >/dev/stderr
320 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 388
321 test_version_info pie && return 0 389 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
322 return 1 390 ${CFLAGS/-fpic} != ${CFLAGS} || \
391 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
323} 392}
324 393
394# DEPRECATED - use gcc-specs-pie from toolchain-funcs
395# indicate whether PIE is set
325has_pie() { 396has_pie() {
326 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 397 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >/dev/stderr
327 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
328 test_version_info pie && return 0
329 return 1
330}
331 398
399 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
400 ${CFLAGS/-fpie} != ${CFLAGS} || \
401 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \
402 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
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} || \
413 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
414 gcc-specs-ssp
415}
416
417# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
418# indicate whether code for SSP is being generated
332has_ssp() { 419has_ssp() {
420 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
421
422 # note; this matches both -fstack-protector and -fstack-protector-all
333 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 423 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
334 test_version_info ssp && return 0 424 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
335 return 1 425 gcc-specs-ssp
336} 426}
337 427
338has_m64() { 428has_m64() {
339 # this doesnt test if the flag is accepted, it tests if the flag 429 # this doesnt test if the flag is accepted, it tests if the flag
340 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 430 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
341 # please dont replace this function with test_flag in some future 431 # please dont replace this function with test_flag in some future
342 # clean-up! 432 # clean-up!
343 temp=`mktemp` 433
434 local temp="$(emktemp)"
344 echo "int main() { return(0); }" > ${temp}.c 435 echo "int main() { return(0); }" > "${temp}".c
345 ${CC/ .*/} -m64 -o /dev/null ${temp}.c > /dev/null 2>&1 436 MY_CC=$(tc-getCC)
346 ret=$? 437 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
438 local ret=$?
347 rm -f ${temp}.c 439 rm -f "${temp}".c
348 [ "$ret" != "1" ] && return 0 440 [[ ${ret} != 1 ]] && return 0
349 return 1 441 return 1
350} 442}
351 443
352has_m32() { 444has_m32() {
353 # this doesnt test if the flag is accepted, it tests if the flag 445 # this doesnt test if the flag is accepted, it tests if the flag
354 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 446 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
355 # please dont replace this function with test_flag in some future 447 # please dont replace this function with test_flag in some future
356 # clean-up! 448 # clean-up!
357 temp=`mktemp` 449
450 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
451
452 local temp=$(emktemp)
358 echo "int main() { return(0); }" > ${temp}.c 453 echo "int main() { return(0); }" > "${temp}".c
359 ${CC/ .*/} -m32 -o /dev/null ${temp}.c > /dev/null 2>&1 454 MY_CC=$(tc-getCC)
360 ret=$? 455 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
456 local ret=$?
361 rm -f ${temp}.c 457 rm -f "${temp}".c
362 [ "$ret" != "1" ] && return 0 458 [[ ${ret} != 1 ]] && return 0
363 return 1 459 return 1
364} 460}
365 461
366replace-sparc64-flags() { 462replace-sparc64-flags() {
367 local SPARC64_CPUS="ultrasparc v9" 463 local SPARC64_CPUS="ultrasparc v9"
368 464
369 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 465 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
370 for x in ${SPARC64_CPUS}; do 466 for x in ${SPARC64_CPUS}; do
371 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 467 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
372 done 468 done
373 else 469 else
374 for x in ${SPARC64_CPUS}; do 470 for x in ${SPARC64_CPUS}; do
375 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 471 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
376 done 472 done
377 fi 473 fi
378 474
379 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 475 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
380 for x in ${SPARC64_CPUS}; do 476 for x in ${SPARC64_CPUS}; do
381 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 477 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
382 done 478 done
383 else 479 else
384 for x in ${SPARC64_CPUS}; do 480 for x in ${SPARC64_CPUS}; do
399 495
400 # we do this fancy spacing stuff so as to not filter 496 # we do this fancy spacing stuff so as to not filter
401 # out part of a flag ... we want flag atoms ! :D 497 # out part of a flag ... we want flag atoms ! :D
402 LDFLAGS=" ${LDFLAGS} " 498 LDFLAGS=" ${LDFLAGS} "
403 for x in "$@" ; do 499 for x in "$@" ; do
404 LDFLAGS="${LDFLAGS// ${x} / }" 500 LDFLAGS=${LDFLAGS// ${x} / }
405 done 501 done
502 [[ -z ${LDFLAGS// } ]] \
503 && LDFLAGS="" \
406 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 504 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
407 export LDFLAGS 505 export LDFLAGS
408 return 0 506 return 0
409} 507}
410 508
411etexec-flags() {
412 # if you're not using a hardened compiler you wont need this
413 # PIC/no-pic kludge in the first place.
414 has_hardened || return 0
415
416 if has_pie || has_pic; then
417 [ -z "`is-flag -fno-pic`" ] &&
418 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
419 [ -z "`is-flag -nopie`" ] &&
420 export CFLAGS="${CFLAGS} `test_flag -nopie`"
421 fi
422 return 0
423}
424
425fstack-flags() { 509fstack-flags() {
426 if has_ssp; then 510 if gcc-specs-ssp; then
427 [ -z "`is-flag -fno-stack-protector`" ] && 511 [ -z "`is-flag -fno-stack-protector`" ] &&
428 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 512 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
429 fi 513 fi
430 return 0 514 return 0
431} 515}
516
517# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
518# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
519# fixes.
520#
521# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
522gcc2-flags() {
523 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
524 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
525 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
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
535
536 export CFLAGS CXXFLAGS
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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