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1# Copyright 1999-2005 Gentoo Foundation 1# Copyright 1999-2007 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 1.104 2006/01/14 10:52:12 kevquinn Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.120 2007/07/22 08:21:09 dberkholz Exp $
4 4#
5# Maintainer: toolchain@gentoo.org
5 6
6# need access to emktemp() 7# need access to emktemp()
7inherit eutils toolchain-funcs multilib 8inherit eutils toolchain-funcs multilib
8 9
9# 10#
19# 20#
20#### replace-cpu-flags <old.cpus> <new.cpu> ### 21#### replace-cpu-flags <old.cpus> <new.cpu> ###
21# Replace march/mcpu flags that specify <old.cpus> 22# Replace march/mcpu flags that specify <old.cpus>
22# with flags that specify <new.cpu> 23# with flags that specify <new.cpu>
23# 24#
24#### is-flag <flag> #### 25#### is-flag[q] <flag> ####
25# Returns "true" if flag is set in C[XX]FLAGS 26# Returns "true" if flag is set in C[XX]FLAGS
26# Matches only complete a 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
27# 34#
28#### strip-flags #### 35#### strip-flags ####
29# Strip C[XX]FLAGS of everything except known 36# Strip C[XX]FLAGS of everything except known
30# good options. 37# good options.
31# 38#
49# Add extra flags to your current LDFLAGS 56# Add extra flags to your current LDFLAGS
50# 57#
51#### filter-ldflags <flags> #### 58#### filter-ldflags <flags> ####
52# Remove particular flags from LDFLAGS 59# Remove particular flags from LDFLAGS
53# Matches only complete flags 60# Matches only complete flags
54#
55#### fstack-flags ####
56# hooked function for hardened gcc that appends
57# -fno-stack-protector to {C,CXX,LD}FLAGS
58# when a package is filtering -fstack-protector, -fstack-protector-all
59# notice: modern automatic specs files will also suppress -fstack-protector-all
60# when only -fno-stack-protector is given
61# 61#
62#### bindnow-flags #### 62#### bindnow-flags ####
63# Returns the flags to enable "now" binding in the current selected linker. 63# Returns the flags to enable "now" binding in the current selected linker.
64# 64#
65################ DEPRECATED functions ################ 65################ DEPRECATED functions ################
90# Returns true if the compiler by default or with current CFLAGS 90# Returns true if the compiler by default or with current CFLAGS
91# generates stack smash protections for most vulnerable functions 91# generates stack smash protections for most vulnerable functions
92# 92#
93 93
94# C[XX]FLAGS that we allow in strip-flags 94# C[XX]FLAGS that we allow in strip-flags
95# Note: shell globs and character lists are allowed
95setup-allowed-flags() { 96setup-allowed-flags() {
96 if [[ -z ${ALLOWED_FLAGS} ]] ; then 97 if [[ -z ${ALLOWED_FLAGS} ]] ; then
97 export ALLOWED_FLAGS="-pipe" 98 export ALLOWED_FLAGS="-pipe"
98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune" 99 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="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking" 101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking"
101 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time" 102 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="${ALLOWED_FLAGS} -g -g[0-9] -ggdb -ggdb[0-9] -gstabs -gstabs+"
104 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-ident"
105 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -W* -w"
103 fi 106 fi
104 # allow a bunch of flags that negate features / control ABI 107 # allow a bunch of flags that negate features / control ABI
105 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all" 108 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all \
109 -fno-strict-aliasing -fno-bounds-checking"
106 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \ 110 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
107 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \ 111 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
108 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \ 112 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
109 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \ 113 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
110 -mieee -mieee-with-inexact \ 114 -mieee -mieee-with-inexact -mschedule \
111 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \ 115 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
112 -mflat -mno-flat -mno-faster-structs -mfaster-structs \ 116 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
113 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \ 117 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
114 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias" 118 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias \
119 -msecure-plt -D*"
115 120
116 # C[XX]FLAGS that we are think is ok, but needs testing 121 # C[XX]FLAGS that we are think is ok, but needs testing
117 # NOTE: currently -Os have issues with gcc3 and K6* arch's 122 # NOTE: currently -Os have issues with gcc3 and K6* arch's
118 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 123 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks"
119 return 0 124 return 0
125}
126
127# inverted filters for hardened compiler. This is trying to unpick
128# the hardened compiler defaults.
129_filter-hardened() {
130 local f
131 for f in "$@" ; do
132 case "${f}" in
133 # Ideally we should only concern ourselves with PIE flags,
134 # not -fPIC or -fpic, but too many places filter -fPIC without
135 # thinking about -fPIE.
136 -fPIC|-fpic|-fPIE|-fpie|-Wl,pie|-pie)
137 gcc-specs-pie || continue
138 is-flagq -nopie || append-flags -nopie;;
139 -fstack-protector)
140 gcc-specs-ssp || continue
141 is-flagq -fno-stack-protector || append-flags -fno-stack-protector;;
142 -fstack-protector-all)
143 gcc-specs-ssp-to-all || continue
144 is-flagq -fno-stack-protector-all || append-flags -fno-stack-protector-all;;
145 esac
146 done
147}
148
149# Remove occurrences of strings from variable given in $1
150# Strings removed are matched as globs, so for example
151# '-O*' would remove -O1, -O2 etc.
152_filter-var() {
153 local f x VAR VAL
154 declare -a new
155
156 VAR=$1
157 shift
158 eval VAL=\${${VAR}}
159 for f in ${VAL}; do
160 for x in "$@"; do
161 # Note this should work with globs like -O*
162 [[ ${f} == ${x} ]] && continue 2
163 done
164 eval new\[\${\#new\[@]}]=\${f}
165 done
166 eval export ${VAR}=\${new\[*]}
120} 167}
121 168
122filter-flags() { 169filter-flags() {
123 local x f fset 170 _filter-hardened "$@"
124 declare -a new_CFLAGS new_CXXFLAGS 171 _filter-var CFLAGS "$@"
125 172 _filter-var CPPFLAGS "$@"
126 for x in "$@" ; do 173 _filter-var CXXFLAGS "$@"
127 case "${x}" in
128 -fPIC|-fpic|-fPIE|-fpie|-pie)
129 append-flags `test_flag -fno-pie`;;
130 -fstack-protector|-fstack-protector-all)
131 fstack-flags;;
132 esac
133 done
134
135 for fset in CFLAGS CXXFLAGS; do
136 # Looping over the flags instead of using a global
137 # substitution ensures that we're working with flag atoms.
138 # Otherwise globs like -O* have the potential to wipe out the
139 # list of flags.
140 for f in ${!fset}; do
141 for x in "$@"; do
142 # Note this should work with globs like -O*
143 [[ ${f} == ${x} ]] && continue 2
144 done
145 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
146 done
147 eval export ${fset}=\${new_${fset}\[*]}
148 done
149
150 return 0 174 return 0
151} 175}
152 176
153filter-lfs-flags() { 177filter-lfs-flags() {
154 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments" 178 [[ -n $@ ]] && die "filter-lfs-flags takes no arguments"
155 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 179 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
156} 180}
157 181
182append-cppflags() {
183 [[ -z $* ]] && return 0
184 export CPPFLAGS="${CPPFLAGS} $*"
185 return 0
186}
187
158append-lfs-flags() { 188append-lfs-flags() {
159 [[ -n $@ ]] && die "append-lfs-flags takes no arguments" 189 [[ -n $@ ]] && die "append-lfs-flags takes no arguments"
160 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 190 append-cppflags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
161} 191}
162 192
163append-flags() { 193append-flags() {
164 [[ -z $* ]] && return 0 194 [[ -z $* ]] && return 0
165 export CFLAGS="${CFLAGS} $*" 195 export CFLAGS="${CFLAGS} $*"
166 export CXXFLAGS="${CXXFLAGS} $*" 196 export CXXFLAGS="${CXXFLAGS} $*"
167 [ -n "`is-flag -fno-stack-protector`" -o \
168 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
169 return 0 197 return 0
170} 198}
171 199
172replace-flags() { 200replace-flags() {
173 [[ $# != 2 ]] \ 201 [[ $# != 2 ]] \
195 223
196replace-cpu-flags() { 224replace-cpu-flags() {
197 local newcpu="$#" ; newcpu="${!newcpu}" 225 local newcpu="$#" ; newcpu="${!newcpu}"
198 while [ $# -gt 1 ] ; do 226 while [ $# -gt 1 ] ; do
199 # quote to make sure that no globbing is done (particularly on 227 # quote to make sure that no globbing is done (particularly on
200 # ${oldcpu} prior to calling replace-flags 228 # ${oldcpu}) prior to calling replace-flags
201 replace-flags "-march=${1}" "-march=${newcpu}" 229 replace-flags "-march=${1}" "-march=${newcpu}"
202 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}" 230 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
203 replace-flags "-mtune=${1}" "-mtune=${newcpu}" 231 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
204 shift 232 shift
205 done 233 done
206 return 0 234 return 0
207} 235}
208 236
237_is_flagq() {
238 local x
239 for x in ${!1} ; do
240 [[ ${x} == $2 ]] && return 0
241 done
242 return 1
243}
244
245is-flagq() {
246 [[ -n $2 ]] && die "Usage: is-flag <flag>"
247 _is_flagq CFLAGS $1 || _is_flagq CXXFLAGS $1
248}
249
209is-flag() { 250is-flag() {
210 local x 251 is-flagq "$@" && echo true
252}
211 253
212 for x in ${CFLAGS} ${CXXFLAGS} ; do 254is-ldflagq() {
213 # Note this should work with globs like -mcpu=ultrasparc* 255 [[ -n $2 ]] && die "Usage: is-ldflag <flag>"
214 if [[ ${x} == ${1} ]]; then 256 _is_flagq LDFLAGS $1
215 echo true 257}
216 return 0 258
217 fi 259is-ldflag() {
218 done 260 is-ldflagq "$@" && echo true
219 return 1
220} 261}
221 262
222filter-mfpmath() { 263filter-mfpmath() {
223 local orig_mfpmath new_math prune_math 264 local orig_mfpmath new_math prune_math
224 265
225 # save the original -mfpmath flag 266 # save the original -mfpmath flag
226 orig_mfpmath="`get-flag -mfpmath`" 267 orig_mfpmath=$(get-flag -mfpmath)
227 # get the value of the current -mfpmath flag 268 # get the value of the current -mfpmath flag
228 new_math=" `get-flag mfpmath | tr , ' '` " 269 new_math=$(get-flag mfpmath)
270 new_math=" ${new_math//,/ } "
229 # figure out which math values are to be removed 271 # figure out which math values are to be removed
230 prune_math="" 272 prune_math=""
231 for prune_math in "$@" ; do 273 for prune_math in "$@" ; do
232 new_math="${new_math/ ${prune_math} / }" 274 new_math=${new_math/ ${prune_math} / }
233 done 275 done
234 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 276 new_math=$(echo ${new_math})
277 new_math=${new_math// /,}
235 278
236 if [ -z "${new_math}" ] ; then 279 if [[ -z ${new_math} ]] ; then
237 # if we're removing all user specified math values are 280 # if we're removing all user specified math values are
238 # slated for removal, then we just filter the flag 281 # slated for removal, then we just filter the flag
239 filter-flags ${orig_mfpmath} 282 filter-flags ${orig_mfpmath}
240 else 283 else
241 # if we only want to filter some of the user specified 284 # if we only want to filter some of the user specified
318 local flags 361 local flags
319 local x 362 local x
320 363
321 shift 364 shift
322 365
323 [[ -z ${comp} ]] && \ 366 [[ -z ${comp} ]] && return 1
324 return 1
325 367
368 x=""
326 for x in "$@" ; do 369 for x in "$@" ; do
327 test-flag-${comp} "${x}" && flags="${flags} ${x}" 370 test-flag-${comp} "${x}" && flags="${flags}${flags:+ }${x}"
328 done 371 done
329 372
330 echo "${flags}" 373 echo "${flags}"
331 374
332 # Just bail if we dont have any flags 375 # Just bail if we dont have any flags
341 384
342# Short-hand that should hopefully work for both C and C++ compiler, but 385# Short-hand that should hopefully work for both C and C++ compiler, but
343# its really only present due to the append-flags() abomination. 386# its really only present due to the append-flags() abomination.
344test-flags() { test-flags-CC "$@"; } 387test-flags() { test-flags-CC "$@"; }
345 388
346# Deprecated, use test-flags() 389# Depriciated, use test-flags()
347test_flag() { 390test_flag() {
348 ewarn "test_flag: deprecated, please use test-flags()!" >&2 391 ewarn "test_flag: deprecated, please use test-flags()!" >&2
349 392
350 test-flags-CC "$@" 393 test-flags-CC "$@"
351} 394}
357 return 1 400 return 1
358 fi 401 fi
359} 402}
360 403
361strip-unsupported-flags() { 404strip-unsupported-flags() {
362 local x NEW_CFLAGS NEW_CXXFLAGS 405 export CFLAGS=$(test-flags-CC ${CFLAGS})
363 406 export CXXFLAGS=$(test-flags-CXX ${CXXFLAGS})
364 for x in ${CFLAGS} ; do
365 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
366 done
367 for x in ${CXXFLAGS} ; do
368 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
369 done
370
371 export CFLAGS=${NEW_CFLAGS}
372 export CXXFLAGS=${NEW_CXXFLAGS}
373} 407}
374 408
375get-flag() { 409get-flag() {
376 local f findflag="$1" 410 local f findflag="$1"
377 411
402# indicate whether PIC is set 436# indicate whether PIC is set
403has_pic() { 437has_pic() {
404 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2 438 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >&2
405 439
406 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \ 440 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
407 ${CFLAGS/-fpic} != ${CFLAGS} || \ 441 ${CFLAGS/-fpic} != ${CFLAGS} ]] || \
408 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]] 442 gcc-specs-pie
409} 443}
410 444
411# DEPRECATED - use gcc-specs-pie from toolchain-funcs 445# DEPRECATED - use gcc-specs-pie from toolchain-funcs
412# indicate whether PIE is set 446# indicate whether PIE is set
413has_pie() { 447has_pie() {
414 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2 448 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >&2
415 449
416 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \ 450 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
417 ${CFLAGS/-fpie} != ${CFLAGS} || \ 451 ${CFLAGS/-fpie} != ${CFLAGS} ]] || \
418 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \ 452 gcc-specs-pie
419 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
420 # test PIC while waiting for specs to be updated to generate __PIE__
421} 453}
422 454
423# DEPRECATED - use gcc-specs-ssp from toolchain-funcs 455# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
424# indicate whether code for SSP is being generated for all functions 456# indicate whether code for SSP is being generated for all functions
425has_ssp_all() { 457has_ssp_all() {
426 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2 458 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >&2
427 459
428 # note; this matches only -fstack-protector-all 460 # note; this matches only -fstack-protector-all
429 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \ 461 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
430 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \ 462 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
431 gcc-specs-ssp 463 gcc-specs-ssp-all
432} 464}
433 465
434# DEPRECATED - use gcc-specs-ssp from toolchain-funcs 466# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
435# indicate whether code for SSP is being generated 467# indicate whether code for SSP is being generated
436has_ssp() { 468has_ssp() {
482 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 514 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
483 for x in ${SPARC64_CPUS}; do 515 for x in ${SPARC64_CPUS}; do
484 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 516 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
485 done 517 done
486 else 518 else
487 for x in ${SPARC64_CPUS}; do 519 for x in ${SPARC64_CPUS}; do
488 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 520 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
489 done 521 done
490 fi 522 fi
491 523
492 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 524 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
493 for x in ${SPARC64_CPUS}; do 525 for x in ${SPARC64_CPUS}; do
494 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 526 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
495 done 527 done
496 else 528 else
497 for x in ${SPARC64_CPUS}; do 529 for x in ${SPARC64_CPUS}; do
498 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 530 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
499 done 531 done
500 fi 532 fi
501 533
502 export CFLAGS CXXFLAGS 534 export CFLAGS CXXFLAGS
503} 535}
504 536
505append-ldflags() { 537append-ldflags() {
538 [[ -z $* ]] && return 0
506 export LDFLAGS="${LDFLAGS} $*" 539 export LDFLAGS="${LDFLAGS} $*"
507 return 0 540 return 0
508} 541}
509 542
543# Remove flags from LDFLAGS - it's up to the ebuild to filter
544# CFLAGS and CXXFLAGS via filter-flags if they need to.
510filter-ldflags() { 545filter-ldflags() {
511 local x 546 _filter-var LDFLAGS "$@"
512
513 # we do this fancy spacing stuff so as to not filter
514 # out part of a flag ... we want flag atoms ! :D
515 LDFLAGS=" ${LDFLAGS} "
516 for x in "$@" ; do
517 LDFLAGS=${LDFLAGS// ${x} / }
518 done
519 [[ -z ${LDFLAGS// } ]] \
520 && LDFLAGS="" \
521 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
522 export LDFLAGS
523 return 0 547 return 0
524} 548}
525 549
526# Turn C style ldflags (-Wl,-foo) into straight ldflags 550# Turn C style ldflags (-Wl,-foo) into straight ldflags - the results
551# are suitable for passing directly to 'ld'; note LDFLAGS is usually passed
552# to gcc where it needs the '-Wl,'.
527raw-ldflags() { 553raw-ldflags() {
528 local x input="$@" 554 local x input="$@"
529 [[ -z ${input} ]] && input=${LDFLAGS} 555 [[ -z ${input} ]] && input=${LDFLAGS}
530 set -- 556 set --
531 for x in ${input} ; do 557 for x in ${input} ; do
532 x=${x#-Wl,} 558 x=${x#-Wl,}
533 set -- "$@" ${x//,/ } 559 set -- "$@" ${x//,/ }
534 done 560 done
535 echo "$@" 561 echo "$@"
536}
537
538fstack-flags() {
539 if gcc-specs-ssp; then
540 [ -z "`is-flag -fno-stack-protector`" ] &&
541 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
542 fi
543 return 0
544}
545
546# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
547# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
548# fixes.
549#
550# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
551gcc2-flags() {
552 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
553 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
554 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
555 fi
556
557 replace-cpu-flags k6-{2,3} k6
558 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
559
560 replace-cpu-flags pentium-mmx i586
561 replace-cpu-flags pentium{2,3,4} i686
562
563 replace-cpu-flags ev6{7,8} ev6
564
565 export CFLAGS CXXFLAGS
566} 562}
567 563
568# Gets the flags needed for "NOW" binding 564# Gets the flags needed for "NOW" binding
569bindnow-flags() { 565bindnow-flags() {
570 case $($(tc-getLD) -v 2>&1 </dev/null) in 566 case $($(tc-getLD) -v 2>&1 </dev/null) in
579 echo "-Wl,-z,now" ;; 575 echo "-Wl,-z,now" ;;
580 esac 576 esac
581 ;; 577 ;;
582 esac 578 esac
583} 579}
580
581
582# Some tests for when we screw with things and want to make
583# sure we didn't break anything
584#TESTS() {
585# CFLAGS="-a -b -c=1"
586# CXXFLAGS="-x -y -z=2"
587# LDFLAGS="-l -m -n=3"
588#
589# die() { exit 1; }
590# (is-flag 1 2 3) && die
591# (is-ldflag 1 2 3) && die
592#
593# is-flagq -l && die
594# is-ldflagq -a && die
595# is-flagq -a || die
596# is-flagq -x || die
597# is-ldflagq -n=* || die
598# is-ldflagq -n && die
599#
600# strip-unsupported-flags
601# [[ ${CFLAGS} == "-c=1" ]] || die
602# [[ ${CXXFLAGS} == "-y -z=2" ]] || die
603#
604# echo "All tests pass"
605#}
606#TESTS

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