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Revision 1.27 Revision 1.82
1# Copyright 1999-2003 Gentoo Technologies, Inc. 1# Copyright 1999-2004 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 1.27 2003/09/24 05:51:32 solar Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.82 2005/02/07 17:50:24 solar Exp $
4# 4#
5# Author Bart Verwilst <verwilst@gentoo.org> 5# Author Bart Verwilst <verwilst@gentoo.org>
6 6
7ECLASS=flag-o-matic 7ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS" 8INHERITED="$INHERITED $ECLASS"
9
10IUSE="debug"
11
12# need access to emktemp()
13inherit eutils toolchain-funcs multilib
9 14
10# 15#
11#### filter-flags <flags> #### 16#### filter-flags <flags> ####
12# Remove particular flags from C[XX]FLAGS 17# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags 18# Matches only complete flags
16# Add extra flags to your current C[XX]FLAGS 21# Add extra flags to your current C[XX]FLAGS
17# 22#
18#### replace-flags <orig.flag> <new.flag> ### 23#### replace-flags <orig.flag> <new.flag> ###
19# Replace a flag by another one 24# Replace a flag by another one
20# 25#
26#### replace-cpu-flags <old.cpus> <new.cpu> ###
27# Replace march/mcpu flags that specify <old.cpus>
28# with flags that specify <new.cpu>
29#
21#### is-flag <flag> #### 30#### is-flag <flag> ####
22# Returns "true" if flag is set in C[XX]FLAGS 31# Returns "true" if flag is set in C[XX]FLAGS
23# Matches only complete a flag 32# Matches only complete a flag
24# 33#
25#### strip-flags #### 34#### strip-flags ####
26# Strip C[XX]FLAGS of everything except known 35# Strip C[XX]FLAGS of everything except known
27# good options. 36# good options.
37#
38#### strip-unsupported-flags ####
39# Strip C[XX]FLAGS of any flags not supported by
40# installed version of gcc
28# 41#
29#### get-flag <flag> #### 42#### get-flag <flag> ####
30# Find and echo the value for a particular flag 43# Find and echo the value for a particular flag
31# 44#
32#### replace-sparc64-flags #### 45#### replace-sparc64-flags ####
39# will leave the user with -mfpmath=386 52# will leave the user with -mfpmath=386
40# 53#
41#### append-ldflags #### 54#### append-ldflags ####
42# Add extra flags to your current LDFLAGS 55# Add extra flags to your current LDFLAGS
43# 56#
44#### etexec-flags #### 57#### filter-ldflags <flags> ####
45# hooked function for hardened-gcc that appends 58# Remove particular flags from LDFLAGS
46# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed 59# Matches only complete flags
47# and a package is filtering -fPIC
48# 60#
49#### fstack-flags #### 61#### fstack-flags ####
50# hooked function for hardened-gcc that appends 62# hooked function for hardened gcc that appends
51# -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed 63# -fno-stack-protector to {C,CXX,LD}FLAGS
52# and a package is filtering -fstack-protector 64# when a package is filtering -fstack-protector, -fstack-protector-all
65# notice: modern automatic specs files will also suppress -fstack-protector-all
66# when only -fno-stack-protector is given
53# 67#
54 68
55# C[XX]FLAGS that we allow in strip-flags 69# C[XX]FLAGS that we allow in strip-flags
56ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 70setup-allowed-flags() {
71 if [ -z "${ALLOWED_FLAGS}" ] ; then
72 export ALLOWED_FLAGS="-pipe"
73 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
74 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector"
75 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"
57case "${ARCH}" in 77 case "${ARCH}" in
58 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 78 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
59 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 79 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
80 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
60 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 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
87 # allow a bunch of flags that negate features / control ABI
88 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
89 case "${ARCH}" in
90 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;;
61esac 91 esac
92 ALLOWED_FLAGS="${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"
62 93
63# C[XX]FLAGS that we are think is ok, but needs testing 94 # C[XX]FLAGS that we are think is ok, but needs testing
64# NOTE: currently -Os have issues with gcc3 and K6* arch's 95 # NOTE: currently -Os have issues with gcc3 and K6* arch's
65UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 96 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
66 97 return 0
67filter-mfpmath() {
68 for a in $CFLAGS; do
69 if [ "${a:0:8}" == "-mfpmath" ]; then
70 orig_mfpmath=$a
71 fi
72 done
73
74 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
75 for b in $@; do
76 mfpmath="${mfpmath/$b}"
77 done
78
79 if [ -z "${mfpmath/ }" ]; then
80 filter-flags "$orig_mfpmath"
81 else
82 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
83 replace-flags "$orig_mfpmath" "$new_mfpmath"
84 fi
85} 98}
86 99
87filter-flags() { 100filter-flags() {
88 # we do two loops to avoid the first and last char from being chomped. 101 local x f fset
102 declare -a new_CFLAGS new_CXXFLAGS
103
89 for x in $@ ; do 104 for x in "$@" ; do
90 case "${x}" in 105 case "${x}" in
91 -fPIC) etexec-flags;; 106 -fPIC|-fpic|-fPIE|-fpie|-pie)
92 -fstack-protector) fstack-flags;; 107 append-flags `test_flag -fno-pie`;;
93 *) ;; 108 -fstack-protector|-fstack-protector-all)
109 fstack-flags;;
94 esac 110 esac
95 done 111 done
96 # we do this fancy spacing stuff so as to not filter 112
97 # out part of a flag ... we want flag atoms ! :D 113 for fset in CFLAGS CXXFLAGS; do
98 CFLAGS=" ${CFLAGS} " 114 # Looping over the flags instead of using a global
99 CXXFLAGS=" ${CXXFLAGS} " 115 # substitution ensures that we're working with flag atoms.
116 # Otherwise globs like -O* have the potential to wipe out the
117 # list of flags.
118 for f in ${!fset}; do
100 for x in $@ ; do 119 for x in "$@"; do
101 CFLAGS="${CFLAGS/ ${x} / }" 120 # Note this should work with globs like -O*
102 CXXFLAGS="${CXXFLAGS/ ${x} / }" 121 [[ ${f} == ${x} ]] && continue 2
122 done
123 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
103 done 124 done
104 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 125 eval export ${fset}=\${new_${fset}\[*]}
105 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 126 done
127
128 return 0
129}
130
131filter-lfs-flags() {
132 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
133}
134
135append-lfs-flags() {
136 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
106} 137}
107 138
108append-flags() { 139append-flags() {
140 [[ -z $* ]] && return 0
109 CFLAGS="${CFLAGS} $@" 141 export CFLAGS="${CFLAGS} $*"
110 CXXFLAGS="${CXXFLAGS} $@" 142 export CXXFLAGS="${CXXFLAGS} $*"
111 for x in $@; do 143 [ -n "`is-flag -fno-stack-protector`" -o \
112 [ "${x}" = "-fno-stack-protector" ] && 144 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
113 fstack-flags 145 return 0
114 done
115} 146}
116 147
117replace-flags() { 148replace-flags() {
118 CFLAGS="${CFLAGS/${1}/${2} }" 149 local f fset
119 CXXFLAGS="${CXXFLAGS/${1}/${2} }" 150 declare -a new_CFLAGS new_CXXFLAGS
151
152 for fset in CFLAGS CXXFLAGS; do
153 # Looping over the flags instead of using a global
154 # substitution ensures that we're working with flag atoms.
155 # Otherwise globs like -O* have the potential to wipe out the
156 # list of flags.
157 for f in ${!fset}; do
158 # Note this should work with globs like -O*
159 [[ ${f} == ${1} ]] && f=${2}
160 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
161 done
162 eval export ${fset}=\${new_${fset}\[*]}
163 done
164
165 return 0
166}
167
168replace-cpu-flags() {
169 local newcpu="$#" ; newcpu="${!newcpu}"
170 while [ $# -gt 1 ] ; do
171 # quote to make sure that no globbing is done (particularly on
172 # ${oldcpu} prior to calling replace-flags
173 replace-flags "-march=${1}" "-march=${newcpu}"
174 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
175 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
176 shift
177 done
178 return 0
120} 179}
121 180
122is-flag() { 181is-flag() {
182 local x
183
123 for x in ${CFLAGS} ${CXXFLAGS} ; do 184 for x in ${CFLAGS} ${CXXFLAGS} ; do
185 # Note this should work with globs like -mcpu=ultrasparc*
124 if [ "${x}" == "$1" ] ; then 186 if [[ ${x} == ${1} ]]; then
125 echo true 187 echo true
126 return 0 188 return 0
127 fi 189 fi
128 done 190 done
129 return 1 191 return 1
130} 192}
131 193
194filter-mfpmath() {
195 local orig_mfpmath new_math prune_math
196
197 # save the original -mfpmath flag
198 orig_mfpmath="`get-flag -mfpmath`"
199 # get the value of the current -mfpmath flag
200 new_math=" `get-flag mfpmath | tr , ' '` "
201 # figure out which math values are to be removed
202 prune_math=""
203 for prune_math in "$@" ; do
204 new_math="${new_math/ ${prune_math} / }"
205 done
206 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
207
208 if [ -z "${new_math}" ] ; then
209 # if we're removing all user specified math values are
210 # slated for removal, then we just filter the flag
211 filter-flags ${orig_mfpmath}
212 else
213 # if we only want to filter some of the user specified
214 # math values, then we replace the current flag
215 replace-flags ${orig_mfpmath} -mfpmath=${new_math}
216 fi
217 return 0
218}
219
132strip-flags() { 220strip-flags() {
221 local x y flag NEW_CFLAGS NEW_CXXFLAGS
222
223 setup-allowed-flags
224
133 local NEW_CFLAGS="" 225 local NEW_CFLAGS=""
134 local NEW_CXXFLAGS="" 226 local NEW_CXXFLAGS=""
135 227
136 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 228 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
137 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 229 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then
138 [ `use debug` ] && einfo "Enabling the use of some unstable flags" 230 use debug && einfo "Enabling the use of some unstable flags"
139 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 231 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
140 fi 232 fi
141 233
142 set -f 234 set -f # disable pathname expansion
143 235
144 for x in ${CFLAGS} 236 for x in ${CFLAGS}; do
145 do
146 for y in ${ALLOWED_FLAGS} 237 for y in ${ALLOWED_FLAGS}; do
147 do
148 flag=${x%%=*} 238 flag=${x%%=*}
149 if [ "${flag%%${y}}" = "" ] 239 if [ "${flag%%${y}}" = "" ] ; then
150 then
151 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 240 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
152 break 241 break
153 fi 242 fi
154 done 243 done
155 done 244 done
156 245
157 for x in ${CXXFLAGS} 246 for x in ${CXXFLAGS}; do
158 do
159 for y in ${ALLOWED_FLAGS} 247 for y in ${ALLOWED_FLAGS}; do
160 do
161 flag=${x%%=*} 248 flag=${x%%=*}
162 if [ "${flag%%${y}}" = "" ] 249 if [ "${flag%%${y}}" = "" ] ; then
163 then
164 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 250 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
165 break 251 break
166 fi 252 fi
167 done 253 done
168 done 254 done
169 255
170 set +f 256 # In case we filtered out all optimization flags fallback to -O2
257 if [ "${CFLAGS/-O}" != "${CFLAGS}" -a "${NEW_CFLAGS/-O}" = "${NEW_CFLAGS}" ]; then
258 NEW_CFLAGS="${NEW_CFLAGS} -O2"
259 fi
260 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
261 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
262 fi
171 263
172 [ `use debug` ] \ 264 set +f # re-enable pathname expansion
173 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
174 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
175 265
176 export CFLAGS="${NEW_CFLAGS}" 266 export CFLAGS="${NEW_CFLAGS}"
177 export CXXFLAGS="${NEW_CXXFLAGS}" 267 export CXXFLAGS="${NEW_CXXFLAGS}"
268 return 0
269}
270
271test_flag() {
272 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
273 printf "%s\n" "$*"
274 return 0
275 fi
276 return 1
277}
278
279test_version_info() {
280 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
281 return 0
282 else
283 return 1
284 fi
285}
286
287strip-unsupported-flags() {
288 local NEW_CFLAGS NEW_CXXFLAGS
289
290 for x in ${CFLAGS} ; do
291 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
292 done
293 for x in ${CXXFLAGS} ; do
294 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
295 done
296
297 export CFLAGS="${NEW_CFLAGS}"
298 export CXXFLAGS="${NEW_CXXFLAGS}"
178} 299}
179 300
180get-flag() { 301get-flag() {
181 local findflag="$1" 302 local f findflag="$1"
182 303
304 # this code looks a little flaky but seems to work for
305 # everything we want ...
306 # for example, if CFLAGS="-march=i686":
307 # `get-flag -march` == "-march=i686"
308 # `get-flag march` == "i686"
183 for f in ${CFLAGS} ${CXXFLAGS} ; do 309 for f in ${CFLAGS} ${CXXFLAGS} ; do
184 if [ "${f/${findflag}}" != "${f}" ] ; then 310 if [ "${f/${findflag}}" != "${f}" ] ; then
185 echo "${f/-${findflag}=}" 311 printf "%s\n" "${f/-${findflag}=}"
186 return 312 return 0
187 fi 313 fi
188 done 314 done
315 return 1
316}
317
318has_hardened() {
319 test_version_info Hardened && return 0
320 # the specs file wont exist unless gcc has GCC_SPECS support
321 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
322 return 0
323 return 1
324}
325
326# indicate whether PIC is set
327has_pic() {
328 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
329 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
330 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
331 test_version_info pie && return 0
332 return 1
333}
334
335# indicate whether PIE is set
336has_pie() {
337 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
338 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
339 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
340 # test PIC while waiting for specs to be updated to generate __PIE__
341 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
342 return 1
343}
344
345# indicate whether code for SSP is being generated
346has_ssp() {
347 # note; this matches both -fstack-protector and -fstack-protector-all
348 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
349 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
350 return 1
351}
352
353has_m64() {
354 # this doesnt test if the flag is accepted, it tests if the flag
355 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
356 # please dont replace this function with test_flag in some future
357 # clean-up!
358 local temp="$(emktemp)"
359 echo "int main() { return(0); }" > ${temp}.c
360 MY_CC=$(tc-getCC)
361 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
362 local ret=$?
363 rm -f ${temp}.c
364 [ "$ret" != "1" ] && return 0
365 return 1
366}
367
368has_m32() {
369 # this doesnt test if the flag is accepted, it tests if the flag
370 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
371 # please dont replace this function with test_flag in some future
372 # clean-up!
373
374 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
375
376 local temp="$(emktemp)"
377 echo "int main() { return(0); }" > ${temp}.c
378 MY_CC=$(tc-getCC)
379 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
380 local ret=$?
381 rm -f ${temp}.c
382 [ "$ret" != "1" ] && return 0
383 return 1
189} 384}
190 385
191replace-sparc64-flags() { 386replace-sparc64-flags() {
192 local SPARC64_CPUS="ultrasparc v9" 387 local SPARC64_CPUS="ultrasparc v9"
193 388
194 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 389 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
195 then
196 for x in ${SPARC64_CPUS} 390 for x in ${SPARC64_CPUS}; do
197 do
198 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 391 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
199 done 392 done
200 else 393 else
201 for x in ${SPARC64_CPUS} 394 for x in ${SPARC64_CPUS}; do
202 do
203 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 395 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
204 done 396 done
205 fi 397 fi
206 398
207 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 399 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
208 then
209 for x in ${SPARC64_CPUS} 400 for x in ${SPARC64_CPUS}; do
210 do
211 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 401 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
212 done 402 done
213 else 403 else
214 for x in ${SPARC64_CPUS} 404 for x in ${SPARC64_CPUS}; do
215 do
216 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 405 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
217 done 406 done
218 fi 407 fi
408
409 export CFLAGS CXXFLAGS
219} 410}
220 411
221append-ldflags() { 412append-ldflags() {
413 export LDFLAGS="${LDFLAGS} $*"
414 return 0
415}
416
417filter-ldflags() {
418 local x
419
420 # we do this fancy spacing stuff so as to not filter
421 # out part of a flag ... we want flag atoms ! :D
222 LDFLAGS="${LDFLAGS} $@" 422 LDFLAGS=" ${LDFLAGS} "
223} 423 for x in "$@" ; do
224 424 LDFLAGS="${LDFLAGS// ${x} / }"
225etexec-flags() { 425 done
226 has_version 'sys-devel/hardened-gcc' && { 426 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
227 debug-print ">>> appending flags -yet_exec" 427 export LDFLAGS
228 append-flags -yet_exec 428 return 0
229 append-ldflags -yet_exec
230 }
231} 429}
232 430
233fstack-flags() { 431fstack-flags() {
234 has_version 'sys-devel/hardened-gcc' && { 432 if has_ssp; then
235 debug-print ">>> appending flags -yno_propolice" 433 [ -z "`is-flag -fno-stack-protector`" ] &&
236 append-flags -yno_propolice 434 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
237 append-ldflags -yno_propolice 435 fi
238 } 436 return 0
239} 437}
438
439# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
440# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
441# fixes.
442#
443# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
444gcc2-flags() {
445 CFLAGS=${CFLAGS//pentium-mmx/i586}
446 CFLAGS=${CFLAGS//pentium[234]/i686}
447 CFLAGS=${CFLAGS//k6-[23]/k6}
448 CFLAGS=${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
466
467 export CFLAGS CXXFLAGS
468}

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