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Revision 1.69 Revision 1.101
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 1.69 2004/09/14 02:06:36 lv Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.101 2006/01/01 01:14:59 swegener 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 ${ALLOWED_FLAGS} ]] ; then
76 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-stack-protector -fno-pie -fno-unit-at-a-time -pipe -g" 97 export ALLOWED_FLAGS="-pipe"
77 case "${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=${newcpu}"
204 shift
171 done 205 done
172 return 0 206 return 0
173} 207}
174 208
175is-flag() { 209is-flag() {
218 252
219 local NEW_CFLAGS="" 253 local NEW_CFLAGS=""
220 local NEW_CXXFLAGS="" 254 local NEW_CXXFLAGS=""
221 255
222 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 256 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
223 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then 257 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
224 use debug && einfo "Enabling the use of some unstable flags"
225 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 258 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
226 fi 259 fi
227 260
228 set -f # disable pathname expansion 261 set -f # disable pathname expansion
229 262
260 export CFLAGS="${NEW_CFLAGS}" 293 export CFLAGS="${NEW_CFLAGS}"
261 export CXXFLAGS="${NEW_CXXFLAGS}" 294 export CXXFLAGS="${NEW_CXXFLAGS}"
262 return 0 295 return 0
263} 296}
264 297
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-PROG() {
317 local comp=$1
318 local flags
319 local x
320
321 shift
322
323 [[ -z ${comp} ]] && \
324 return 1
325
326 for x in "$@" ; do
327 test-flag-${comp} "${x}" && flags="${flags} ${x}"
328 done
329
330 echo "${flags}"
331
332 # Just bail if we dont have any flags
333 [[ -n ${flags} ]]
334}
335
336# Returns (echo's) the given flags supported by the C compiler
337test-flags-CC() { test-flags-PROG "CC" "$@"; }
338
339# Returns (echo's) the given flags supported by the C++ compiler
340test-flags-CXX() { test-flags-PROG "CXX" "$@"; }
341
342# Short-hand that should hopefully work for both C and C++ compiler, but
343# its really only present due to the append-flags() abomination.
344test-flags() { test-flags-CC "$@"; }
345
346# Depriciated, use test-flags()
265test_flag() { 347test_flag() {
266 local cc=${CC:-gcc} ; cc=${cc%% *} 348 addwrite "/dev/stderr"
267 if ${cc} -S -xc "$@" -o /dev/null /dev/null &>/dev/null; then 349 ewarn "test_flag: deprecated, please use test-flags()!" >/dev/stderr
268 printf "%s\n" "$*" 350
269 return 0 351 test-flags-CC "$@"
270 fi
271 return 1
272} 352}
273 353
274test_version_info() { 354test_version_info() {
275 local cc=${CC:-gcc} ; cc=${cc%% *}
276 if [[ $(${cc} --version 2>&1) == *$1* ]]; then 355 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
277 return 0 356 return 0
278 else 357 else
279 return 1 358 return 1
280 fi 359 fi
281} 360}
282 361
283strip-unsupported-flags() { 362strip-unsupported-flags() {
284 local NEW_CFLAGS NEW_CXXFLAGS 363 local x NEW_CFLAGS NEW_CXXFLAGS
285 364
286 for x in ${CFLAGS} ; do 365 for x in ${CFLAGS} ; do
287 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`" 366 NEW_CFLAGS="${NEW_CFLAGS} $(test-flags ${x})"
288 done 367 done
289 for x in ${CXXFLAGS} ; do 368 for x in ${CXXFLAGS} ; do
290 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`" 369 NEW_CXXFLAGS="${NEW_CXXFLAGS} $(test-flags ${x})"
291 done 370 done
292 371
293 export CFLAGS="${NEW_CFLAGS}" 372 export CFLAGS=${NEW_CFLAGS}
294 export CXXFLAGS="${NEW_CXXFLAGS}" 373 export CXXFLAGS=${NEW_CXXFLAGS}
295} 374}
296 375
297get-flag() { 376get-flag() {
298 local f findflag="$1" 377 local f findflag="$1"
299 378
309 fi 388 fi
310 done 389 done
311 return 1 390 return 1
312} 391}
313 392
393# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
314has_hardened() { 394has_hardened() {
395 addwrite "/dev/stderr"
396 ewarn "has_hardened: deprecated, please use gcc-specs-{relro,now}()!" \
397 >/dev/stderr
398
315 test_version_info Hardened && return 0 399 test_version_info Hardened && return 0
316 # the specs file wont exist unless gcc has GCC_SPECS support 400 # The specs file wont exist unless gcc has GCC_SPECS support
317 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \ 401 [[ -f ${GCC_SPECS} && ${GCC_SPECS} != ${GCC_SPECS/hardened/} ]]
318 return 0
319 return 1
320} 402}
321 403
404# DEPRECATED - use gcc-specs-pie from toolchain-funcs
405# indicate whether PIC is set
322has_pic() { 406has_pic() {
323 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0 407 addwrite "/dev/stderr"
324 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0 408 ewarn "has_pic: deprecated, please use gcc-specs-pie()!" >/dev/stderr
325 test_version_info pie && return 0
326 return 1
327}
328 409
410 [[ ${CFLAGS/-fPIC} != ${CFLAGS} || \
411 ${CFLAGS/-fpic} != ${CFLAGS} || \
412 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
413}
414
415# DEPRECATED - use gcc-specs-pie from toolchain-funcs
416# indicate whether PIE is set
329has_pie() { 417has_pie() {
330 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0 418 addwrite "/dev/stderr"
331 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0 419 ewarn "has_pie: deprecated, please use gcc-specs-pie()!" >/dev/stderr
332 test_version_info pie && return 0 420
333 return 1 421 [[ ${CFLAGS/-fPIE} != ${CFLAGS} || \
422 ${CFLAGS/-fpie} != ${CFLAGS} || \
423 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__) || \
424 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__) ]]
425 # test PIC while waiting for specs to be updated to generate __PIE__
334} 426}
335 427
428# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
429# indicate whether code for SSP is being generated for all functions
430has_ssp_all() {
431 addwrite "/dev/stderr"
432 ewarn "has_ssp_all: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
433
434 # note; this matches only -fstack-protector-all
435 [[ ${CFLAGS/-fstack-protector-all} != ${CFLAGS} || \
436 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__) ]] || \
437 gcc-specs-ssp
438}
439
440# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
441# indicate whether code for SSP is being generated
336has_ssp() { 442has_ssp() {
443 addwrite "/dev/stderr"
444 ewarn "has_ssp: deprecated, please use gcc-specs-ssp()!" >/dev/stderr
445
446 # note; this matches both -fstack-protector and -fstack-protector-all
337 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0 447 [[ ${CFLAGS/-fstack-protector} != ${CFLAGS} || \
338 test_version_info ssp && return 0 448 -n $(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__) ]] || \
339 return 1 449 gcc-specs-ssp
340} 450}
341 451
342has_m64() { 452has_m64() {
343 # this doesnt test if the flag is accepted, it tests if the flag 453 # this doesnt test if the flag is accepted, it tests if the flag
344 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 454 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
345 # please dont replace this function with test_flag in some future 455 # please dont replace this function with test_flag in some future
346 # clean-up! 456 # clean-up!
347 temp=`mktemp` 457
458 local temp="$(emktemp)"
348 echo "int main() { return(0); }" > ${temp}.c 459 echo "int main() { return(0); }" > "${temp}".c
349 ${CC/ .*/} -m64 -o /dev/null ${temp}.c > /dev/null 2>&1 460 MY_CC=$(tc-getCC)
350 ret=$? 461 ${MY_CC/ .*/} -m64 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
462 local ret=$?
351 rm -f ${temp}.c 463 rm -f "${temp}".c
352 [ "$ret" != "1" ] && return 0 464 [[ ${ret} != 1 ]] && return 0
353 return 1 465 return 1
354} 466}
355 467
356has_m32() { 468has_m32() {
357 # this doesnt test if the flag is accepted, it tests if the flag 469 # this doesnt test if the flag is accepted, it tests if the flag
358 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64! 470 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
359 # please dont replace this function with test_flag in some future 471 # please dont replace this function with test_flag in some future
360 # clean-up! 472 # clean-up!
361 temp=`mktemp` 473
474 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
475
476 local temp=$(emktemp)
362 echo "int main() { return(0); }" > ${temp}.c 477 echo "int main() { return(0); }" > "${temp}".c
363 ${CC/ .*/} -m32 -o /dev/null ${temp}.c > /dev/null 2>&1 478 MY_CC=$(tc-getCC)
364 ret=$? 479 ${MY_CC/ .*/} -m32 -o "$(emktemp)" "${temp}".c > /dev/null 2>&1
480 local ret=$?
365 rm -f ${temp}.c 481 rm -f "${temp}".c
366 [ "$ret" != "1" ] && return 0 482 [[ ${ret} != 1 ]] && return 0
367 return 1 483 return 1
368} 484}
369 485
370replace-sparc64-flags() { 486replace-sparc64-flags() {
371 local SPARC64_CPUS="ultrasparc v9" 487 local SPARC64_CPUS="ultrasparc3 ultrasparc v9"
372 488
373 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then 489 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
374 for x in ${SPARC64_CPUS}; do 490 for x in ${SPARC64_CPUS}; do
375 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 491 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
376 done 492 done
377 else 493 else
378 for x in ${SPARC64_CPUS}; do 494 for x in ${SPARC64_CPUS}; do
379 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 495 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
380 done 496 done
381 fi 497 fi
382 498
383 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then 499 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
384 for x in ${SPARC64_CPUS}; do 500 for x in ${SPARC64_CPUS}; do
385 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 501 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
386 done 502 done
387 else 503 else
388 for x in ${SPARC64_CPUS}; do 504 for x in ${SPARC64_CPUS}; do
403 519
404 # we do this fancy spacing stuff so as to not filter 520 # we do this fancy spacing stuff so as to not filter
405 # out part of a flag ... we want flag atoms ! :D 521 # out part of a flag ... we want flag atoms ! :D
406 LDFLAGS=" ${LDFLAGS} " 522 LDFLAGS=" ${LDFLAGS} "
407 for x in "$@" ; do 523 for x in "$@" ; do
408 LDFLAGS="${LDFLAGS// ${x} / }" 524 LDFLAGS=${LDFLAGS// ${x} / }
409 done 525 done
526 [[ -z ${LDFLAGS// } ]] \
527 && LDFLAGS="" \
410 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}" 528 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
411 export LDFLAGS 529 export LDFLAGS
412 return 0 530 return 0
413} 531}
414 532
415etexec-flags() {
416 # if you're not using a hardened compiler you wont need this
417 # PIC/no-pic kludge in the first place.
418 has_hardened || return 0
419 # this kludge breaks on amd64, and probably other -fPIC dependant
420 # archs.
421 use amd64 && return 0
422
423 if has_pie || has_pic; then
424 [ -z "`is-flag -fno-pic`" ] &&
425 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
426 [ -z "`is-flag -nopie`" ] &&
427 export CFLAGS="${CFLAGS} `test_flag -nopie`"
428 fi
429 return 0
430}
431
432fstack-flags() { 533fstack-flags() {
433 if has_ssp; then 534 if gcc-specs-ssp; then
434 [ -z "`is-flag -fno-stack-protector`" ] && 535 [ -z "`is-flag -fno-stack-protector`" ] &&
435 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`" 536 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
436 fi 537 fi
437 return 0 538 return 0
438} 539}
540
541# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
542# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
543# fixes.
544#
545# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
546gcc2-flags() {
547 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
548 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
549 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
550 fi
551
552 replace-cpu-flags k6-{2,3} k6
553 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
554
555 replace-cpu-flags pentium-mmx i586
556 replace-cpu-flags pentium{2,3,4} i686
557
558 replace-cpu-flags ev6{7,8} ev6
559
560 export CFLAGS CXXFLAGS
561}
562
563# Gets the flags needed for "NOW" binding
564bindnow-flags() {
565 case $($(tc-getLD) -v 2>&1 </dev/null) in
566 *GNU* | *'with BFD'*) # GNU ld
567 echo "-Wl,-z,now" ;;
568 *Apple*) # Darwin ld
569 echo "-bind_at_load" ;;
570 *)
571 # Some linkers just recognize -V instead of -v
572 case $($(tc-getLD) -V 2>&1 </dev/null) in
573 *Solaris*) # Solaris accept almost the same GNU options
574 echo "-Wl,-z,now" ;;
575 esac
576 ;;
577 esac
578}

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