/[gentoo-x86]/eclass/flag-o-matic.eclass
Gentoo

Diff of /eclass/flag-o-matic.eclass

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

Revision 1.24 Revision 1.92
1# Copyright 1999-2003 Gentoo Technologies, Inc. 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 1.24 2003/07/22 12:48:11 aliz Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.92 2005/08/01 10:50:55 kevquinn Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
6 4
7ECLASS=flag-o-matic 5
8INHERITED="$INHERITED $ECLASS" 6# need access to emktemp()
7inherit eutils toolchain-funcs multilib
9 8
10# 9#
11#### filter-flags <flags> #### 10#### filter-flags <flags> ####
12# Remove particular flags from C[XX]FLAGS 11# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags 12# Matches only complete flags
… …
16# Add extra flags to your current C[XX]FLAGS 15# Add extra flags to your current C[XX]FLAGS
17# 16#
18#### replace-flags <orig.flag> <new.flag> ### 17#### replace-flags <orig.flag> <new.flag> ###
19# Replace a flag by another one 18# Replace a flag by another one
20# 19#
20#### replace-cpu-flags <old.cpus> <new.cpu> ###
21# Replace march/mcpu flags that specify <old.cpus>
22# with flags that specify <new.cpu>
23#
21#### is-flag <flag> #### 24#### is-flag <flag> ####
22# Returns "true" if flag is set in C[XX]FLAGS 25# Returns "true" if flag is set in C[XX]FLAGS
23# Matches only complete a flag 26# Matches only complete a flag
24# 27#
25#### strip-flags #### 28#### strip-flags ####
26# Strip C[XX]FLAGS of everything except known 29# Strip C[XX]FLAGS of everything except known
27# good options. 30# good options.
28# 31#
32#### strip-unsupported-flags ####
33# Strip C[XX]FLAGS of any flags not supported by
34# installed version of gcc
35#
29#### get-flag <flag> #### 36#### get-flag <flag> ####
30# Find and echo the value for a particular flag 37# Find and echo the value for a particular flag
31# 38#
32#### replace-sparc64-flags #### 39#### replace-sparc64-flags ####
33# Sets mcpu to v8 and uses the original value 40# Sets mcpu to v8 and uses the original value
34# as mtune if none specified. 41# as mtune if none specified.
35# 42#
36 43#### filter-mfpmath <math types> ####
44# Remove specified math types from the fpmath specification
45# If the user has -mfpmath=sse,386, running `filter-mfpmath sse`
46# will leave the user with -mfpmath=386
47#
48#### append-ldflags ####
49# Add extra flags to your current LDFLAGS
50#
51#### filter-ldflags <flags> ####
52# Remove particular flags from LDFLAGS
53# 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#
62#
63################ DEPRECATED functions ################
64# The following are still present to avoid breaking existing
65# code more than necessary; however they are deprecated. Please
66# use gcc-specs-* from toolchain-funcs.eclass instead, if you
67# need to know which hardened techs are active in the compiler.
68# See bug #100974
69#
70#### has_hardened ####
71# Returns true if the compiler has 'Hardened' in its version string,
72# (note; switched-spec vanilla compilers satisfy this condition) or
73# the specs file name contains 'hardened'.
74#
75#### has_pie ####
76# Returns true if the compiler by default or with current CFLAGS
77# builds position-independent code.
78#
79#### has_pic ####
80# Returns true if the compiler by default or with current CFLAGS
81# builds position-independent code.
82#
83#### has_ssp_all ####
84# Returns true if the compiler by default or with current CFLAGS
85# generates stack smash protections for all functions
86#
87#### has_ssp ####
88# Returns true if the compiler by default or with current CFLAGS
89# generates stack smash protections for most vulnerable functions
90#
37 91
38# C[XX]FLAGS that we allow in strip-flags 92# C[XX]FLAGS that we allow in strip-flags
39ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 93setup-allowed-flags() {
40case "${ARCH}" in 94 if [[ -z ${ALLOWED_FLAGS} ]] ; then
41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 95 export ALLOWED_FLAGS="-pipe"
42 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 96 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
43esac 97 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fstack-protector-all"
98 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fbounds-checking -fno-bounds-checking"
99 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
100 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
101 fi
102 # allow a bunch of flags that negate features / control ABI
103 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
104 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs \
105 -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow \
106 -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 \
107 -msoft-float -mno-soft-float -mhard-float -mno-hard-float -mfpu \
108 -mieee -mieee-with-inexact \
109 -mtls-direct-seg-refs -mno-tls-direct-seg-refs \
110 -mflat -mno-flat -mno-faster-structs -mfaster-structs \
111 -m32 -m64 -mabi -mlittle-endian -mbig-endian -EL -EB -fPIC \
112 -mlive-g0 -mcmodel -mstack-bias -mno-stack-bias"
44 113
45# C[XX]FLAGS that we are think is ok, but needs testing 114 # C[XX]FLAGS that we are think is ok, but needs testing
46# NOTE: currently -Os have issues with gcc3 and K6* arch's 115 # NOTE: currently -Os have issues with gcc3 and K6* arch's
47UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 116 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
48 117 return 0
49filter-mfpmath() {
50 for a in $CFLAGS; do
51 if [ "${a:0:8}" == "-mfpmath" ]; then
52 orig_mfpmath=$a
53 fi
54 done
55
56 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
57 for b in $@; do
58 mfpmath="${mfpmath/$b}"
59 done
60
61 if [ -z "${mfpmath/ }" ]; then
62 filter-flags "$orig_mfpmath"
63 else
64 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
65 replace-flags "$orig_mfpmath" "$new_mfpmath"
66 fi
67} 118}
68 119
69filter-flags() { 120filter-flags() {
70 # we do this fancy spacing stuff so as to not filter 121 local x f fset
71 # out part of a flag ... we want flag atoms ! :D 122 declare -a new_CFLAGS new_CXXFLAGS
72 export CFLAGS=" ${CFLAGS} " 123
73 export CXXFLAGS=" ${CXXFLAGS} "
74 for x in $@ ; do 124 for x in "$@" ; do
75 export CFLAGS="${CFLAGS/ ${x} / }" 125 case "${x}" in
76 export CXXFLAGS="${CXXFLAGS/ ${x} / }" 126 -fPIC|-fpic|-fPIE|-fpie|-pie)
127 append-flags `test_flag -fno-pie`;;
128 -fstack-protector|-fstack-protector-all)
129 fstack-flags;;
130 esac
131 done
132
133 for fset in CFLAGS CXXFLAGS; do
134 # Looping over the flags instead of using a global
135 # substitution ensures that we're working with flag atoms.
136 # Otherwise globs like -O* have the potential to wipe out the
137 # list of flags.
138 for f in ${!fset}; do
139 for x in "$@"; do
140 # Note this should work with globs like -O*
141 [[ ${f} == ${x} ]] && continue 2
142 done
143 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
77 done 144 done
78 export CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 145 eval export ${fset}=\${new_${fset}\[*]}
79 export CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 146 done
147
148 return 0
149}
150
151filter-lfs-flags() {
152 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
153}
154
155append-lfs-flags() {
156 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
80} 157}
81 158
82append-flags() { 159append-flags() {
160 [[ -z $* ]] && return 0
83 CFLAGS="${CFLAGS} $@" 161 export CFLAGS="${CFLAGS} $*"
84 CXXFLAGS="${CXXFLAGS} $@" 162 export CXXFLAGS="${CXXFLAGS} $*"
163 [ -n "`is-flag -fno-stack-protector`" -o \
164 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
165 return 0
85} 166}
86 167
87replace-flags() { 168replace-flags() {
88 CFLAGS="${CFLAGS/${1}/${2} }" 169 local f fset
89 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 170 declare -a new_CFLAGS new_CXXFLAGS
171
172 for fset in CFLAGS CXXFLAGS; do
173 # Looping over the flags instead of using a global
174 # substitution ensures that we're working with flag atoms.
175 # Otherwise globs like -O* have the potential to wipe out the
176 # list of flags.
177 for f in ${!fset}; do
178 # Note this should work with globs like -O*
179 [[ ${f} == ${1} ]] && f=${2}
180 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
181 done
182 eval export ${fset}=\${new_${fset}\[*]}
183 done
184
185 return 0
186}
187
188replace-cpu-flags() {
189 local newcpu="$#" ; newcpu="${!newcpu}"
190 while [ $# -gt 1 ] ; do
191 # quote to make sure that no globbing is done (particularly on
192 # ${oldcpu} prior to calling replace-flags
193 replace-flags "-march=${1}" "-march=${newcpu}"
194 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
195 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
196 shift
197 done
198 return 0
90} 199}
91 200
92is-flag() { 201is-flag() {
202 local x
203
93 for x in ${CFLAGS} ${CXXFLAGS} ; do 204 for x in ${CFLAGS} ${CXXFLAGS} ; do
205 # Note this should work with globs like -mcpu=ultrasparc*
94 if [ "${x}" == "$1" ] ; then 206 if [[ ${x} == ${1} ]]; then
95 echo true 207 echo true
96 return 0 208 return 0
97 fi 209 fi
98 done 210 done
99 return 1 211 return 1
100} 212}
101 213
214filter-mfpmath() {
215 local orig_mfpmath new_math prune_math
216
217 # save the original -mfpmath flag
218 orig_mfpmath="`get-flag -mfpmath`"
219 # get the value of the current -mfpmath flag
220 new_math=" `get-flag mfpmath | tr , ' '` "
221 # figure out which math values are to be removed
222 prune_math=""
223 for prune_math in "$@" ; do
224 new_math="${new_math/ ${prune_math} / }"
225 done
226 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
227
228 if [ -z "${new_math}" ] ; then
229 # if we're removing all user specified math values are
230 # slated for removal, then we just filter the flag
231 filter-flags ${orig_mfpmath}
232 else
233 # if we only want to filter some of the user specified
234 # math values, then we replace the current flag
235 replace-flags ${orig_mfpmath} -mfpmath=${new_math}
236 fi
237 return 0
238}
239
102strip-flags() { 240strip-flags() {
241 local x y flag NEW_CFLAGS NEW_CXXFLAGS
242
243 setup-allowed-flags
244
103 local NEW_CFLAGS="" 245 local NEW_CFLAGS=""
104 local NEW_CXXFLAGS="" 246 local NEW_CXXFLAGS=""
105 247
106 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 248 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
107 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 249 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
108 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
109 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 250 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
110 fi 251 fi
111 252
112 set -f 253 set -f # disable pathname expansion
113 254
114 for x in ${CFLAGS} 255 for x in ${CFLAGS}; do
115 do
116 for y in ${ALLOWED_FLAGS} 256 for y in ${ALLOWED_FLAGS}; do
117 do
118 flag=${x%%=*} 257 flag=${x%%=*}
119 if [ "${flag%%${y}}" = "" ] 258 if [ "${flag%%${y}}" = "" ] ; then
120 then
121 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 259 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
122 break 260 break
123 fi 261 fi
124 done 262 done
125 done 263 done
126 264
127 for x in ${CXXFLAGS} 265 for x in ${CXXFLAGS}; do
128 do
129 for y in ${ALLOWED_FLAGS} 266 for y in ${ALLOWED_FLAGS}; do
130 do
131 flag=${x%%=*} 267 flag=${x%%=*}
132 if [ "${flag%%${y}}" = "" ] 268 if [ "${flag%%${y}}" = "" ] ; then
133 then
134 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 269 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
135 break 270 break
136 fi 271 fi
137 done 272 done
138 done 273 done
139 274
140 set +f 275 # In case we filtered out all optimization flags fallback to -O2
276 if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
277 NEW_CFLAGS="${NEW_CFLAGS} -O2"
278 fi
279 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
280 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
281 fi
141 282
142 [ `use debug` ] \ 283 set +f # re-enable pathname expansion
143 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
144 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
145 284
146 export CFLAGS="${NEW_CFLAGS}" 285 export CFLAGS="${NEW_CFLAGS}"
147 export CXXFLAGS="${NEW_CXXFLAGS}" 286 export CXXFLAGS="${NEW_CXXFLAGS}"
287 return 0
288}
289
290test_flag() {
291 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
292 printf "%s\n" "$*"
293 return 0
294 fi
295 return 1
296}
297
298test_version_info() {
299 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
300 return 0
301 else
302 return 1
303 fi
304}
305
306strip-unsupported-flags() {
307 local NEW_CFLAGS NEW_CXXFLAGS
308
309 for x in ${CFLAGS} ; do
310 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
311 done
312 for x in ${CXXFLAGS} ; do
313 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
314 done
315
316 export CFLAGS="${NEW_CFLAGS}"
317 export CXXFLAGS="${NEW_CXXFLAGS}"
148} 318}
149 319
150get-flag() { 320get-flag() {
151 local findflag="$1" 321 local f findflag="$1"
152 322
323 # this code looks a little flaky but seems to work for
324 # everything we want ...
325 # for example, if CFLAGS="-march=i686":
326 # `get-flag -march` == "-march=i686"
327 # `get-flag march` == "i686"
153 for f in ${CFLAGS} ${CXXFLAGS} ; do 328 for f in ${CFLAGS} ${CXXFLAGS} ; do
154 if [ "${f/${findflag}}" != "${f}" ] ; then 329 if [ "${f/${findflag}}" != "${f}" ] ; then
155 echo "${f/-${findflag}=}" 330 printf "%s\n" "${f/-${findflag}=}"
156 return 331 return 0
157 fi 332 fi
158 done 333 done
334 return 1
335}
336
337# DEPRECATED - use gcc-specs-relro or gcc-specs-now from toolchain-funcs
338has_hardened() {
339 test_version_info Hardened && return 0
340 # the specs file wont exist unless gcc has GCC_SPECS support
341 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
342 return 0
343 return 1
344}
345
346# DEPRECATED - use gcc-specs-pie from toolchain-funcs
347# indicate whether PIC is set
348has_pic() {
349 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
350 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
351 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
352 return 1
353}
354
355# DEPRECATED - use gcc-specs-pie from toolchain-funcs
356# indicate whether PIE is set
357has_pie() {
358 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
359 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
360 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
361 # test PIC while waiting for specs to be updated to generate __PIE__
362 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
363 return 1
364}
365
366# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
367# indicate whether code for SSP is being generated for all functions
368has_ssp_all() {
369 # note; this matches only -fstack-protector-all
370 [ "${CFLAGS/-fstack-protector-all}" != "${CFLAGS}" ] && return 0
371 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP_ALL__)" ] && return 0
372 gcc-specs-ssp && return 0
373 return 1
374}
375
376# DEPRECATED - use gcc-specs-ssp from toolchain-funcs
377# indicate whether code for SSP is being generated
378has_ssp() {
379 # note; this matches both -fstack-protector and -fstack-protector-all
380 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
381 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
382 gcc-specs-ssp && return 0
383 return 1
384}
385
386has_m64() {
387 # this doesnt test if the flag is accepted, it tests if the flag
388 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
389 # please dont replace this function with test_flag in some future
390 # clean-up!
391 local temp="$(emktemp)"
392 echo "int main() { return(0); }" > ${temp}.c
393 MY_CC=$(tc-getCC)
394 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
395 local ret=$?
396 rm -f ${temp}.c
397 [ "$ret" != "1" ] && return 0
398 return 1
399}
400
401has_m32() {
402 # this doesnt test if the flag is accepted, it tests if the flag
403 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
404 # please dont replace this function with test_flag in some future
405 # clean-up!
406
407 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
408
409 local temp="$(emktemp)"
410 echo "int main() { return(0); }" > ${temp}.c
411 MY_CC=$(tc-getCC)
412 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
413 local ret=$?
414 rm -f ${temp}.c
415 [ "$ret" != "1" ] && return 0
416 return 1
159} 417}
160 418
161replace-sparc64-flags() { 419replace-sparc64-flags() {
162 local SPARC64_CPUS="ultrasparc v9" 420 local SPARC64_CPUS="ultrasparc v9"
163 421
164 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 422 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
165 then
166 for x in ${SPARC64_CPUS} 423 for x in ${SPARC64_CPUS}; do
167 do
168 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 424 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
169 done 425 done
170 else 426 else
171 for x in ${SPARC64_CPUS} 427 for x in ${SPARC64_CPUS}; do
172 do
173 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 428 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
174 done 429 done
175 fi 430 fi
176 431
177 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 432 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
178 then
179 for x in ${SPARC64_CPUS} 433 for x in ${SPARC64_CPUS}; do
180 do
181 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 434 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
182 done 435 done
183 else 436 else
184 for x in ${SPARC64_CPUS} 437 for x in ${SPARC64_CPUS}; do
185 do
186 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 438 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
187 done 439 done
188 fi 440 fi
441
442 export CFLAGS CXXFLAGS
189} 443}
444
445append-ldflags() {
446 export LDFLAGS="${LDFLAGS} $*"
447 return 0
448}
449
450filter-ldflags() {
451 local x
452
453 # we do this fancy spacing stuff so as to not filter
454 # out part of a flag ... we want flag atoms ! :D
455 LDFLAGS=" ${LDFLAGS} "
456 for x in "$@" ; do
457 LDFLAGS=${LDFLAGS// ${x} / }
458 done
459 [[ -z ${LDFLAGS// } ]] \
460 && LDFLAGS="" \
461 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
462 export LDFLAGS
463 return 0
464}
465
466fstack-flags() {
467 if gcc-specs-ssp; then
468 [ -z "`is-flag -fno-stack-protector`" ] &&
469 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
470 fi
471 return 0
472}
473
474# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
475# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
476# fixes.
477#
478# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
479gcc2-flags() {
480 if [[ $(tc-arch) == "x86" || $(tc-arch) == "amd64" ]] ; then
481 CFLAGS=${CFLAGS//-mtune=/-mcpu=}
482 CXXFLAGS=${CXXFLAGS//-mtune=/-mcpu=}
483 fi
484
485 replace-cpu-flags k6-{2,3} k6
486 replace-cpu-flags athlon{,-{tbird,4,xp,mp}} i686
487
488 replace-cpu-flags pentium-mmx i586
489 replace-cpu-flags pentium{2,3,4} i686
490
491 replace-cpu-flags ev6{7,8} ev6
492
493 export CFLAGS CXXFLAGS
494}
Legend:
Removed from v.1.24  
changed lines
  Added in v.1.92
  ViewVC Help
Powered by ViewVC 1.1.13