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Revision 1.37 Revision 1.75
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 1.37 2004/02/21 07:19:29 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.75 2004/10/28 01:38:31 vapier 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
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#
21#### replace-cpu-flags <new.cpu> <old.cpus> ### 26#### replace-cpu-flags <old.cpus> <new.cpu> ###
22# Replace march/mcpu flags that specify <old.cpus> 27# Replace march/mcpu flags that specify <old.cpus>
23# with flags that specify <new.cpu> 28# with flags that specify <new.cpu>
24# 29#
25#### is-flag <flag> #### 30#### is-flag <flag> ####
26# Returns "true" if flag is set in C[XX]FLAGS 31# Returns "true" if flag is set in C[XX]FLAGS
47# will leave the user with -mfpmath=386 52# will leave the user with -mfpmath=386
48# 53#
49#### append-ldflags #### 54#### append-ldflags ####
50# Add extra flags to your current LDFLAGS 55# Add extra flags to your current LDFLAGS
51# 56#
57#### filter-ldflags <flags> ####
58# Remove particular flags from LDFLAGS
59# Matches only complete flags
60#
52#### etexec-flags #### 61#### etexec-flags ####
53# hooked function for hardened-gcc that appends 62# hooked function for hardened gcc that appends
54# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed 63# -fno-pic to {C,CXX,LD}FLAGS
55# and a package is filtering -fPIC,-fpic, -fPIE, -fpie 64# when a package is filtering -fpic, -fPIC, -fpie, -fPIE
56# 65#
57#### fstack-flags #### 66#### fstack-flags ####
58# hooked function for hardened-gcc that appends 67# hooked function for hardened gcc that appends
59# -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed 68# -fno-stack-protector to {C,CXX,LD}FLAGS
60# and a package is filtering -fstack-protector, -fstack-protector-all 69# when a package is filtering -fstack-protector, -fstack-protector-all
70# notice: modern automatic specs files will also suppress -fstack-protector-all
71# when only -fno-stack-protector is given
61# 72#
62 73
63# C[XX]FLAGS that we allow in strip-flags 74# C[XX]FLAGS that we allow in strip-flags
64setup-allowed-flags() { 75setup-allowed-flags() {
76 if [ -z "${ALLOWED_FLAGS}" ] ; then
65 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 77 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -fno-stack-protector -fno-pie -fno-unit-at-a-time -pipe -g"
78 case "${ARCH}" in
79 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
80 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
81 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
82 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
83 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
84 esac
85 fi
86 # allow a bunch of flags that negate features / control ABI
87 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
66 case "${ARCH}" in 88 case "${ARCH}" in
67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 89 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;;
68 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
69 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
70 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
71 esac 90 esac
91 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias"
72 92
73 # C[XX]FLAGS that we are think is ok, but needs testing 93 # C[XX]FLAGS that we are think is ok, but needs testing
74 # NOTE: currently -Os have issues with gcc3 and K6* arch's 94 # NOTE: currently -Os have issues with gcc3 and K6* arch's
75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 95 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76 return 0 96 return 0
77} 97}
78 98
79filter-flags() { 99filter-flags() {
100 local x f fset
101 declare -a new_CFLAGS new_CXXFLAGS
102
80 for x in "$@" ; do 103 for x in "$@" ; do
81 case "${x}" in 104 case "${x}" in
82 -fPIC|-fpic|-fPIE|-fpie) etexec-flags;; 105 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
83 -fstack-protector|-fstack-protector-all) fstack-flags;; 106 -fstack-protector|-fstack-protector-all) fstack-flags;;
84 *) ;;
85 esac 107 esac
86 done 108 done
87 109
88 # we do this fancy spacing stuff so as to not filter 110 for fset in CFLAGS CXXFLAGS; do
89 # out part of a flag ... we want flag atoms ! :D 111 # Looping over the flags instead of using a global
90 CFLAGS=" ${CFLAGS} " 112 # substitution ensures that we're working with flag atoms.
91 CXXFLAGS=" ${CXXFLAGS} " 113 # Otherwise globs like -O* have the potential to wipe out the
114 # list of flags.
115 for f in ${!fset}; do
92 for x in "$@" ; do 116 for x in "$@"; do
93 CFLAGS="${CFLAGS// ${x} / }" 117 # Note this should work with globs like -O*
94 CXXFLAGS="${CXXFLAGS// ${x} / }" 118 [[ ${f} == ${x} ]] && continue 2
119 done
120 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
95 done 121 done
96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 122 eval export ${fset}=\${new_${fset}\[*]}
97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 123 done
124
98 return 0 125 return 0
126}
127
128filter-lfs-flags() {
129 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
130}
131
132append-lfs-flags() {
133 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
99} 134}
100 135
101append-flags() { 136append-flags() {
102 export CFLAGS="${CFLAGS} $@" 137 export CFLAGS="${CFLAGS} $*"
103 export CXXFLAGS="${CXXFLAGS} $@" 138 export CXXFLAGS="${CXXFLAGS} $*"
104 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags 139 [ -n "`is-flag -fno-stack-protector`" -o \
140 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
105 return 0 141 return 0
106} 142}
107 143
108replace-flags() { 144replace-flags() {
109 # we do this fancy spacing stuff so as to not filter 145 local f fset
110 # out part of a flag ... we want flag atoms ! :D 146 declare -a new_CFLAGS new_CXXFLAGS
111 CFLAGS=" ${CFLAGS} " 147
112 CXXFLAGS=" ${CXXFLAGS} " 148 for fset in CFLAGS CXXFLAGS; do
113 CFLAGS="${CFLAGS// ${1} / ${2} }" 149 # Looping over the flags instead of using a global
114 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 150 # substitution ensures that we're working with flag atoms.
115 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 151 # Otherwise globs like -O* have the potential to wipe out the
116 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 152 # list of flags.
153 for f in ${!fset}; do
154 # Note this should work with globs like -O*
155 [[ ${f} == ${1} ]] && f=${2}
156 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
157 done
158 eval export ${fset}=\${new_${fset}\[*]}
159 done
160
117 return 0 161 return 0
118} 162}
119 163
120replace-cpu-flags() { 164replace-cpu-flags() {
121 local newcpu="$1" ; shift 165 local newcpu="$#" ; newcpu="${!newcpu}"
122 local oldcpu="" 166 while [ $# -gt 1 ] ; do
123 for oldcpu in "$@" ; do 167 # quote to make sure that no globbing is done (particularly on
168 # ${oldcpu} prior to calling replace-flags
124 replace-flags -march=${oldcpu} -march=${newcpu} 169 replace-flags "-march=${1}" "-march=${newcpu}"
125 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 170 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
171 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
172 shift
126 done 173 done
127 return 0 174 return 0
128} 175}
129 176
130is-flag() { 177is-flag() {
178 local x
179
131 for x in ${CFLAGS} ${CXXFLAGS} ; do 180 for x in ${CFLAGS} ${CXXFLAGS} ; do
181 # Note this should work with globs like -mcpu=ultrasparc*
132 if [ "${x}" == "$1" ] ; then 182 if [[ ${x} == ${1} ]]; then
133 echo true 183 echo true
134 return 0 184 return 0
135 fi 185 fi
136 done 186 done
137 return 1 187 return 1
138} 188}
139 189
140filter-mfpmath() { 190filter-mfpmath() {
191 local orig_mfpmath new_math prune_math
192
141 # save the original -mfpmath flag 193 # save the original -mfpmath flag
142 local orig_mfpmath="`get-flag -mfpmath`" 194 orig_mfpmath="`get-flag -mfpmath`"
143 # get the value of the current -mfpmath flag 195 # get the value of the current -mfpmath flag
144 local new_math=" `get-flag mfpmath | tr , ' '` " 196 new_math=" `get-flag mfpmath | tr , ' '` "
145 # figure out which math values are to be removed 197 # figure out which math values are to be removed
146 local prune_math="" 198 prune_math=""
147 for prune_math in "$@" ; do 199 for prune_math in "$@" ; do
148 new_math="${new_math/ ${prune_math} / }" 200 new_math="${new_math/ ${prune_math} / }"
149 done 201 done
150 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 202 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
151 203
160 fi 212 fi
161 return 0 213 return 0
162} 214}
163 215
164strip-flags() { 216strip-flags() {
217 local x y flag NEW_CFLAGS NEW_CXXFLAGS
218
165 setup-allowed-flags 219 setup-allowed-flags
166 220
167 local NEW_CFLAGS="" 221 local NEW_CFLAGS=""
168 local NEW_CXXFLAGS="" 222 local NEW_CXXFLAGS=""
169 223
170 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 224 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
171 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 225 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then
172 [ `use debug` ] && einfo "Enabling the use of some unstable flags" 226 use debug && einfo "Enabling the use of some unstable flags"
173 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 227 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
174 fi 228 fi
175 229
176 set -f 230 set -f # disable pathname expansion
177 231
178 for x in ${CFLAGS} 232 for x in ${CFLAGS}; do
179 do
180 for y in ${ALLOWED_FLAGS} 233 for y in ${ALLOWED_FLAGS}; do
181 do
182 flag=${x%%=*} 234 flag=${x%%=*}
183 if [ "${flag%%${y}}" = "" ] 235 if [ "${flag%%${y}}" = "" ] ; then
184 then
185 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 236 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
186 break 237 break
187 fi 238 fi
188 done 239 done
189 done 240 done
190 241
191 for x in ${CXXFLAGS} 242 for x in ${CXXFLAGS}; do
192 do
193 for y in ${ALLOWED_FLAGS} 243 for y in ${ALLOWED_FLAGS}; do
194 do
195 flag=${x%%=*} 244 flag=${x%%=*}
196 if [ "${flag%%${y}}" = "" ] 245 if [ "${flag%%${y}}" = "" ] ; then
197 then
198 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 246 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
199 break 247 break
200 fi 248 fi
201 done 249 done
202 done 250 done
207 fi 255 fi
208 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 256 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
209 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 257 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
210 fi 258 fi
211 259
212 set +f 260 set +f # re-enable pathname expansion
213
214 [ `use debug` ] \
215 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
216 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
217 261
218 export CFLAGS="${NEW_CFLAGS}" 262 export CFLAGS="${NEW_CFLAGS}"
219 export CXXFLAGS="${NEW_CXXFLAGS}" 263 export CXXFLAGS="${NEW_CXXFLAGS}"
220 return 0 264 return 0
221} 265}
222 266
223test_flag() { 267test_flag() {
224 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then 268 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
225 echo "$@" 269 printf "%s\n" "$*"
226 return 0 270 return 0
227 fi 271 fi
228 return 1 272 return 1
229} 273}
230 274
275test_version_info() {
276 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
277 return 0
278 else
279 return 1
280 fi
281}
282
231strip-unsupported-flags() { 283strip-unsupported-flags() {
284 local NEW_CFLAGS NEW_CXXFLAGS
285
232 for x in ${CFLAGS} ; do 286 for x in ${CFLAGS} ; do
233 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" 287 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
234 done 288 done
235 for x in ${CXXFLAGS} ; do 289 for x in ${CXXFLAGS} ; do
236 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" 290 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
237 done 291 done
238 292
239 export CFLAGS="${NEW_CFLAGS}" 293 export CFLAGS="${NEW_CFLAGS}"
240 export CXXFLAGS="${NEW_CXXFLAGS}" 294 export CXXFLAGS="${NEW_CXXFLAGS}"
241} 295}
242 296
243get-flag() { 297get-flag() {
298 local f findflag="$1"
299
244 # this code looks a little flaky but seems to work for 300 # this code looks a little flaky but seems to work for
245 # everything we want ... 301 # everything we want ...
246 # for example, if CFLAGS="-march=i686": 302 # for example, if CFLAGS="-march=i686":
247 # `get-flags -march` == "-march=i686" 303 # `get-flag -march` == "-march=i686"
248 # `get-flags march` == "i686" 304 # `get-flag march` == "i686"
249 local findflag="$1"
250 for f in ${CFLAGS} ${CXXFLAGS} ; do 305 for f in ${CFLAGS} ${CXXFLAGS} ; do
251 if [ "${f/${findflag}}" != "${f}" ] ; then 306 if [ "${f/${findflag}}" != "${f}" ] ; then
252 echo "${f/-${findflag}=}" 307 printf "%s\n" "${f/-${findflag}=}"
253 return 0 308 return 0
254 fi 309 fi
255 done 310 done
256 return 1 311 return 1
257} 312}
258 313
314has_hardened() {
315 test_version_info Hardened && return 0
316 # the specs file wont exist unless gcc has GCC_SPECS support
317 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
318 return 0
319 return 1
320}
321
322has_pic() {
323 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
324 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
325 test_version_info pie && return 0
326 return 1
327}
328
329has_pie() {
330 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
331 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
332 test_version_info pie && return 0
333 return 1
334}
335
336has_ssp() {
337 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
338 test_version_info ssp && return 0
339 return 1
340}
341
342has_m64() {
343 # 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!
345 # please dont replace this function with test_flag in some future
346 # clean-up!
347 local temp="$(emktemp)"
348 echo "int main() { return(0); }" > ${temp}.c
349 MY_CC=$(tc-getCC)
350 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
351 local ret=$?
352 rm -f ${temp}.c
353 [ "$ret" != "1" ] && return 0
354 return 1
355}
356
357has_m32() {
358 # this doesnt test if the flag is accepted, it tests if the flag
359 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
360 # please dont replace this function with test_flag in some future
361 # clean-up!
362 local temp="$(emktemp)"
363 echo "int main() { return(0); }" > ${temp}.c
364 MY_CC=$(tc-getCC)
365 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
366 local ret=$?
367 rm -f ${temp}.c
368 [ "$ret" != "1" ] && return 0
369 return 1
370}
371
259replace-sparc64-flags() { 372replace-sparc64-flags() {
260 local SPARC64_CPUS="ultrasparc v9" 373 local SPARC64_CPUS="ultrasparc v9"
261 374
262 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 375 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
263 then
264 for x in ${SPARC64_CPUS} 376 for x in ${SPARC64_CPUS}; do
265 do
266 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 377 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
267 done 378 done
268 else 379 else
269 for x in ${SPARC64_CPUS} 380 for x in ${SPARC64_CPUS}; do
270 do
271 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 381 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
272 done 382 done
273 fi 383 fi
274 384
275 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 385 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
276 then
277 for x in ${SPARC64_CPUS} 386 for x in ${SPARC64_CPUS}; do
278 do
279 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 387 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
280 done 388 done
281 else 389 else
282 for x in ${SPARC64_CPUS} 390 for x in ${SPARC64_CPUS}; do
283 do
284 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 391 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
285 done 392 done
286 fi 393 fi
394
395 export CFLAGS CXXFLAGS
287} 396}
288 397
289append-ldflags() { 398append-ldflags() {
399 export LDFLAGS="${LDFLAGS} $*"
400 return 0
401}
402
403filter-ldflags() {
404 local x
405
406 # we do this fancy spacing stuff so as to not filter
407 # out part of a flag ... we want flag atoms ! :D
290 LDFLAGS="${LDFLAGS} $@" 408 LDFLAGS=" ${LDFLAGS} "
409 for x in "$@" ; do
410 LDFLAGS="${LDFLAGS// ${x} / }"
411 done
412 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
413 export LDFLAGS
291 return 0 414 return 0
292} 415}
293 416
294etexec-flags() { 417etexec-flags() {
295 has_version sys-devel/hardened-gcc 418 # if you're not using a hardened compiler you wont need this
296 if [ $? == 0 ] ; then 419 # PIC/no-pic kludge in the first place.
297 if [ "`is-flag -yet_exec`" != "true" ]; then 420 has_hardened || return 0
298 debug-print ">>> appending flags -yet_exec" 421 # this kludge breaks on amd64, and probably other -fPIC dependant
299 append-flags -yet_exec 422 # archs.
300 append-ldflags -yet_exec 423 use amd64 && return 0
424
425 if has_pie || has_pic; then
426 [ -z "`is-flag -fno-pic`" ] &&
427 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
428 [ -z "`is-flag -nopie`" ] &&
429 export CFLAGS="${CFLAGS} `test_flag -nopie`"
301 fi 430 fi
302 fi 431 return 0
303} 432}
304 433
305fstack-flags() { 434fstack-flags() {
306 has_version sys-devel/hardened-gcc 435 if has_ssp; then
307 if [ $? == 0 ] ; then 436 [ -z "`is-flag -fno-stack-protector`" ] &&
308 if [ "`is-flag -yno_propolice`" != "true" ]; then 437 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
309 debug-print ">>> appending flags -yno_propolice"
310 append-flags -yno_propolice
311 append-ldflags -yno_propolice
312 fi 438 fi
313 fi 439 return 0
314} 440}
441
442# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
443# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
444# fixes.
445#
446# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
447gcc2-flags() {
448 CFLAGS=${CFLAGS//pentium-mmx/i586}
449 CFLAGS=${CFLAGS//pentium[234]/i686}
450 CFLAGS=${CFLAGS//k6-[23]/k6}
451 CFLAGS=${CFLAGS//athlon-tbird/i686}
452 CFLAGS=${CFLAGS//athlon-4/i686}
453 CFLAGS=${CFLAGS//athlon-[xm]p/i686}
454 CFLAGS=${CFLAGS//athlon/i686}
455
456 CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
457 CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
458 CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
459 CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
460 CXXFLAGS=${CXXFLAGS//athlon-4/i686}
461 CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
462 CXXFLAGS=${CXXFLAGS//athlon/i686}
463
464 if [ "$ARCH" = alpha ]; then
465 CHOST=${CHOST/#alphaev6[78]/alphaev6}
466 CFLAGS=${CFLAGS//ev6[78]/ev6}
467 CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
468 fi
469
470 export CFLAGS CXXFLAGS
471}

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