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Revision 1.37 Revision 1.79
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 1.79 2004/12/25 18:45:56 chriswhite 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() {
65 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 76 if [ -z "${ALLOWED_FLAGS}" ] ; then
77 export ALLOWED_FLAGS="-pipe"
78 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
79 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector"
80 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
81 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
82 case "${ARCH}" in
83 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
84 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
85 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
86 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
87 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
88 sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;;
89 ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;;
90 esac
91 fi
92 # allow a bunch of flags that negate features / control ABI
93 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
66 case "${ARCH}" in 94 case "${ARCH}" in
67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 95 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 96 esac
97 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias"
72 98
73 # C[XX]FLAGS that we are think is ok, but needs testing 99 # C[XX]FLAGS that we are think is ok, but needs testing
74 # NOTE: currently -Os have issues with gcc3 and K6* arch's 100 # NOTE: currently -Os have issues with gcc3 and K6* arch's
75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 101 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76 return 0 102 return 0
77} 103}
78 104
79filter-flags() { 105filter-flags() {
106 local x f fset
107 declare -a new_CFLAGS new_CXXFLAGS
108
80 for x in "$@" ; do 109 for x in "$@" ; do
81 case "${x}" in 110 case "${x}" in
82 -fPIC|-fpic|-fPIE|-fpie) etexec-flags;; 111 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
83 -fstack-protector|-fstack-protector-all) fstack-flags;; 112 -fstack-protector|-fstack-protector-all) fstack-flags;;
84 *) ;;
85 esac 113 esac
86 done 114 done
87 115
88 # we do this fancy spacing stuff so as to not filter 116 for fset in CFLAGS CXXFLAGS; do
89 # out part of a flag ... we want flag atoms ! :D 117 # Looping over the flags instead of using a global
90 CFLAGS=" ${CFLAGS} " 118 # substitution ensures that we're working with flag atoms.
91 CXXFLAGS=" ${CXXFLAGS} " 119 # Otherwise globs like -O* have the potential to wipe out the
120 # list of flags.
121 for f in ${!fset}; do
92 for x in "$@" ; do 122 for x in "$@"; do
93 CFLAGS="${CFLAGS// ${x} / }" 123 # Note this should work with globs like -O*
94 CXXFLAGS="${CXXFLAGS// ${x} / }" 124 [[ ${f} == ${x} ]] && continue 2
125 done
126 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
95 done 127 done
96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 128 eval export ${fset}=\${new_${fset}\[*]}
97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 129 done
130
98 return 0 131 return 0
132}
133
134filter-lfs-flags() {
135 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
136}
137
138append-lfs-flags() {
139 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
99} 140}
100 141
101append-flags() { 142append-flags() {
102 export CFLAGS="${CFLAGS} $@" 143 export CFLAGS="${CFLAGS} $*"
103 export CXXFLAGS="${CXXFLAGS} $@" 144 export CXXFLAGS="${CXXFLAGS} $*"
104 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags 145 [ -n "`is-flag -fno-stack-protector`" -o \
146 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
105 return 0 147 return 0
106} 148}
107 149
108replace-flags() { 150replace-flags() {
109 # we do this fancy spacing stuff so as to not filter 151 local f fset
110 # out part of a flag ... we want flag atoms ! :D 152 declare -a new_CFLAGS new_CXXFLAGS
111 CFLAGS=" ${CFLAGS} " 153
112 CXXFLAGS=" ${CXXFLAGS} " 154 for fset in CFLAGS CXXFLAGS; do
113 CFLAGS="${CFLAGS// ${1} / ${2} }" 155 # Looping over the flags instead of using a global
114 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 156 # substitution ensures that we're working with flag atoms.
115 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 157 # Otherwise globs like -O* have the potential to wipe out the
116 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 158 # list of flags.
159 for f in ${!fset}; do
160 # Note this should work with globs like -O*
161 [[ ${f} == ${1} ]] && f=${2}
162 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
163 done
164 eval export ${fset}=\${new_${fset}\[*]}
165 done
166
117 return 0 167 return 0
118} 168}
119 169
120replace-cpu-flags() { 170replace-cpu-flags() {
121 local newcpu="$1" ; shift 171 local newcpu="$#" ; newcpu="${!newcpu}"
122 local oldcpu="" 172 while [ $# -gt 1 ] ; do
123 for oldcpu in "$@" ; do 173 # quote to make sure that no globbing is done (particularly on
174 # ${oldcpu} prior to calling replace-flags
124 replace-flags -march=${oldcpu} -march=${newcpu} 175 replace-flags "-march=${1}" "-march=${newcpu}"
125 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 176 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
177 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
178 shift
126 done 179 done
127 return 0 180 return 0
128} 181}
129 182
130is-flag() { 183is-flag() {
184 local x
185
131 for x in ${CFLAGS} ${CXXFLAGS} ; do 186 for x in ${CFLAGS} ${CXXFLAGS} ; do
187 # Note this should work with globs like -mcpu=ultrasparc*
132 if [ "${x}" == "$1" ] ; then 188 if [[ ${x} == ${1} ]]; then
133 echo true 189 echo true
134 return 0 190 return 0
135 fi 191 fi
136 done 192 done
137 return 1 193 return 1
138} 194}
139 195
140filter-mfpmath() { 196filter-mfpmath() {
197 local orig_mfpmath new_math prune_math
198
141 # save the original -mfpmath flag 199 # save the original -mfpmath flag
142 local orig_mfpmath="`get-flag -mfpmath`" 200 orig_mfpmath="`get-flag -mfpmath`"
143 # get the value of the current -mfpmath flag 201 # get the value of the current -mfpmath flag
144 local new_math=" `get-flag mfpmath | tr , ' '` " 202 new_math=" `get-flag mfpmath | tr , ' '` "
145 # figure out which math values are to be removed 203 # figure out which math values are to be removed
146 local prune_math="" 204 prune_math=""
147 for prune_math in "$@" ; do 205 for prune_math in "$@" ; do
148 new_math="${new_math/ ${prune_math} / }" 206 new_math="${new_math/ ${prune_math} / }"
149 done 207 done
150 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 208 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
151 209
160 fi 218 fi
161 return 0 219 return 0
162} 220}
163 221
164strip-flags() { 222strip-flags() {
223 local x y flag NEW_CFLAGS NEW_CXXFLAGS
224
165 setup-allowed-flags 225 setup-allowed-flags
166 226
167 local NEW_CFLAGS="" 227 local NEW_CFLAGS=""
168 local NEW_CXXFLAGS="" 228 local NEW_CXXFLAGS=""
169 229
170 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 230 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
171 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 231 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then
172 [ `use debug` ] && einfo "Enabling the use of some unstable flags" 232 use debug && einfo "Enabling the use of some unstable flags"
173 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 233 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
174 fi 234 fi
175 235
176 set -f 236 set -f # disable pathname expansion
177 237
178 for x in ${CFLAGS} 238 for x in ${CFLAGS}; do
179 do
180 for y in ${ALLOWED_FLAGS} 239 for y in ${ALLOWED_FLAGS}; do
181 do
182 flag=${x%%=*} 240 flag=${x%%=*}
183 if [ "${flag%%${y}}" = "" ] 241 if [ "${flag%%${y}}" = "" ] ; then
184 then
185 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 242 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
186 break 243 break
187 fi 244 fi
188 done 245 done
189 done 246 done
190 247
191 for x in ${CXXFLAGS} 248 for x in ${CXXFLAGS}; do
192 do
193 for y in ${ALLOWED_FLAGS} 249 for y in ${ALLOWED_FLAGS}; do
194 do
195 flag=${x%%=*} 250 flag=${x%%=*}
196 if [ "${flag%%${y}}" = "" ] 251 if [ "${flag%%${y}}" = "" ] ; then
197 then
198 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 252 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
199 break 253 break
200 fi 254 fi
201 done 255 done
202 done 256 done
207 fi 261 fi
208 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 262 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
209 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 263 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
210 fi 264 fi
211 265
212 set +f 266 set +f # re-enable pathname expansion
213
214 [ `use debug` ] \
215 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
216 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
217 267
218 export CFLAGS="${NEW_CFLAGS}" 268 export CFLAGS="${NEW_CFLAGS}"
219 export CXXFLAGS="${NEW_CXXFLAGS}" 269 export CXXFLAGS="${NEW_CXXFLAGS}"
220 return 0 270 return 0
221} 271}
222 272
223test_flag() { 273test_flag() {
224 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then 274 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
225 echo "$@" 275 printf "%s\n" "$*"
226 return 0 276 return 0
227 fi 277 fi
228 return 1 278 return 1
229} 279}
230 280
281test_version_info() {
282 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
283 return 0
284 else
285 return 1
286 fi
287}
288
231strip-unsupported-flags() { 289strip-unsupported-flags() {
290 local NEW_CFLAGS NEW_CXXFLAGS
291
232 for x in ${CFLAGS} ; do 292 for x in ${CFLAGS} ; do
233 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" 293 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
234 done 294 done
235 for x in ${CXXFLAGS} ; do 295 for x in ${CXXFLAGS} ; do
236 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" 296 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
237 done 297 done
238 298
239 export CFLAGS="${NEW_CFLAGS}" 299 export CFLAGS="${NEW_CFLAGS}"
240 export CXXFLAGS="${NEW_CXXFLAGS}" 300 export CXXFLAGS="${NEW_CXXFLAGS}"
241} 301}
242 302
243get-flag() { 303get-flag() {
304 local f findflag="$1"
305
244 # this code looks a little flaky but seems to work for 306 # this code looks a little flaky but seems to work for
245 # everything we want ... 307 # everything we want ...
246 # for example, if CFLAGS="-march=i686": 308 # for example, if CFLAGS="-march=i686":
247 # `get-flags -march` == "-march=i686" 309 # `get-flag -march` == "-march=i686"
248 # `get-flags march` == "i686" 310 # `get-flag march` == "i686"
249 local findflag="$1"
250 for f in ${CFLAGS} ${CXXFLAGS} ; do 311 for f in ${CFLAGS} ${CXXFLAGS} ; do
251 if [ "${f/${findflag}}" != "${f}" ] ; then 312 if [ "${f/${findflag}}" != "${f}" ] ; then
252 echo "${f/-${findflag}=}" 313 printf "%s\n" "${f/-${findflag}=}"
253 return 0 314 return 0
254 fi 315 fi
255 done 316 done
256 return 1 317 return 1
257} 318}
258 319
320has_hardened() {
321 test_version_info Hardened && return 0
322 # the specs file wont exist unless gcc has GCC_SPECS support
323 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
324 return 0
325 return 1
326}
327
328has_pic() {
329 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
330 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
331 test_version_info pie && return 0
332 return 1
333}
334
335has_pie() {
336 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
337 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
338 test_version_info pie && return 0
339 return 1
340}
341
342has_ssp() {
343 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
344 test_version_info ssp && return 0
345 return 1
346}
347
348has_m64() {
349 # this doesnt test if the flag is accepted, it tests if the flag
350 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
351 # please dont replace this function with test_flag in some future
352 # clean-up!
353 local temp="$(emktemp)"
354 echo "int main() { return(0); }" > ${temp}.c
355 MY_CC=$(tc-getCC)
356 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
357 local ret=$?
358 rm -f ${temp}.c
359 [ "$ret" != "1" ] && return 0
360 return 1
361}
362
363has_m32() {
364 # this doesnt test if the flag is accepted, it tests if the flag
365 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
366 # please dont replace this function with test_flag in some future
367 # clean-up!
368 local temp="$(emktemp)"
369 echo "int main() { return(0); }" > ${temp}.c
370 MY_CC=$(tc-getCC)
371 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
372 local ret=$?
373 rm -f ${temp}.c
374 [ "$ret" != "1" ] && return 0
375 return 1
376}
377
259replace-sparc64-flags() { 378replace-sparc64-flags() {
260 local SPARC64_CPUS="ultrasparc v9" 379 local SPARC64_CPUS="ultrasparc v9"
261 380
262 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 381 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
263 then
264 for x in ${SPARC64_CPUS} 382 for x in ${SPARC64_CPUS}; do
265 do
266 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 383 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
267 done 384 done
268 else 385 else
269 for x in ${SPARC64_CPUS} 386 for x in ${SPARC64_CPUS}; do
270 do
271 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 387 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
272 done 388 done
273 fi 389 fi
274 390
275 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 391 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
276 then
277 for x in ${SPARC64_CPUS} 392 for x in ${SPARC64_CPUS}; do
278 do
279 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 393 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
280 done 394 done
281 else 395 else
282 for x in ${SPARC64_CPUS} 396 for x in ${SPARC64_CPUS}; do
283 do
284 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 397 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
285 done 398 done
286 fi 399 fi
400
401 export CFLAGS CXXFLAGS
287} 402}
288 403
289append-ldflags() { 404append-ldflags() {
405 export LDFLAGS="${LDFLAGS} $*"
406 return 0
407}
408
409filter-ldflags() {
410 local x
411
412 # we do this fancy spacing stuff so as to not filter
413 # out part of a flag ... we want flag atoms ! :D
290 LDFLAGS="${LDFLAGS} $@" 414 LDFLAGS=" ${LDFLAGS} "
415 for x in "$@" ; do
416 LDFLAGS="${LDFLAGS// ${x} / }"
417 done
418 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
419 export LDFLAGS
291 return 0 420 return 0
292} 421}
293 422
294etexec-flags() { 423etexec-flags() {
295 has_version sys-devel/hardened-gcc 424 # if you're not using a hardened compiler you wont need this
296 if [ $? == 0 ] ; then 425 # PIC/no-pic kludge in the first place.
297 if [ "`is-flag -yet_exec`" != "true" ]; then 426 has_hardened || return 0
298 debug-print ">>> appending flags -yet_exec" 427 use amd64 && return 0
299 append-flags -yet_exec 428 use mips && return 0
300 append-ldflags -yet_exec 429
430 if has_pie || has_pic; then
431 [ -z "`is-flag -fno-pic`" ] &&
432 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
433 [ -z "`is-flag -nopie`" ] &&
434 export CFLAGS="${CFLAGS} `test_flag -nopie`"
301 fi 435 fi
302 fi 436 return 0
303} 437}
304 438
305fstack-flags() { 439fstack-flags() {
306 has_version sys-devel/hardened-gcc 440 if has_ssp; then
307 if [ $? == 0 ] ; then 441 [ -z "`is-flag -fno-stack-protector`" ] &&
308 if [ "`is-flag -yno_propolice`" != "true" ]; then 442 export CFLAGS="${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 443 fi
313 fi 444 return 0
314} 445}
446
447# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
448# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
449# fixes.
450#
451# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
452gcc2-flags() {
453 CFLAGS=${CFLAGS//pentium-mmx/i586}
454 CFLAGS=${CFLAGS//pentium[234]/i686}
455 CFLAGS=${CFLAGS//k6-[23]/k6}
456 CFLAGS=${CFLAGS//athlon-tbird/i686}
457 CFLAGS=${CFLAGS//athlon-4/i686}
458 CFLAGS=${CFLAGS//athlon-[xm]p/i686}
459 CFLAGS=${CFLAGS//athlon/i686}
460
461 CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
462 CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
463 CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
464 CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
465 CXXFLAGS=${CXXFLAGS//athlon-4/i686}
466 CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
467 CXXFLAGS=${CXXFLAGS//athlon/i686}
468
469 if [ "$ARCH" = alpha ]; then
470 CHOST=${CHOST/#alphaev6[78]/alphaev6}
471 CFLAGS=${CFLAGS//ev6[78]/ev6}
472 CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
473 fi
474
475 export CFLAGS CXXFLAGS
476}

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