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Revision 1.40 Revision 1.77
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 1.40 2004/03/12 11:21:15 vapier Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.77 2004/11/13 07:07:08 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
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 esac
89 fi
90 # allow a bunch of flags that negate features / control ABI
91 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
66 case "${ARCH}" in 92 case "${ARCH}" in
67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 93 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 94 esac
95 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias"
72 96
73 # C[XX]FLAGS that we are think is ok, but needs testing 97 # C[XX]FLAGS that we are think is ok, but needs testing
74 # NOTE: currently -Os have issues with gcc3 and K6* arch's 98 # NOTE: currently -Os have issues with gcc3 and K6* arch's
75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 99 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76 return 0 100 return 0
77} 101}
78 102
79filter-flags() { 103filter-flags() {
104 local x f fset
105 declare -a new_CFLAGS new_CXXFLAGS
106
80 for x in "$@" ; do 107 for x in "$@" ; do
81 case "${x}" in 108 case "${x}" in
82 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 109 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
83 -fstack-protector|-fstack-protector-all) fstack-flags;; 110 -fstack-protector|-fstack-protector-all) fstack-flags;;
84 *) ;;
85 esac 111 esac
86 done 112 done
87 113
88 # we do this fancy spacing stuff so as to not filter 114 for fset in CFLAGS CXXFLAGS; do
89 # out part of a flag ... we want flag atoms ! :D 115 # Looping over the flags instead of using a global
90 CFLAGS=" ${CFLAGS} " 116 # substitution ensures that we're working with flag atoms.
91 CXXFLAGS=" ${CXXFLAGS} " 117 # Otherwise globs like -O* have the potential to wipe out the
118 # list of flags.
119 for f in ${!fset}; do
92 for x in "$@" ; do 120 for x in "$@"; do
93 CFLAGS="${CFLAGS// ${x} / }" 121 # Note this should work with globs like -O*
94 CXXFLAGS="${CXXFLAGS// ${x} / }" 122 [[ ${f} == ${x} ]] && continue 2
123 done
124 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
95 done 125 done
96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 126 eval export ${fset}=\${new_${fset}\[*]}
97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 127 done
128
98 return 0 129 return 0
99} 130}
100 131
101filter-lfs-flags() { 132filter-lfs-flags() {
102 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 133 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
103} 134}
104 135
136append-lfs-flags() {
137 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
138}
139
105append-flags() { 140append-flags() {
106 export CFLAGS="${CFLAGS} $@" 141 export CFLAGS="${CFLAGS} $*"
107 export CXXFLAGS="${CXXFLAGS} $@" 142 export CXXFLAGS="${CXXFLAGS} $*"
108 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags 143 [ -n "`is-flag -fno-stack-protector`" -o \
144 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
109 return 0 145 return 0
110} 146}
111 147
112replace-flags() { 148replace-flags() {
113 # we do this fancy spacing stuff so as to not filter 149 local f fset
114 # out part of a flag ... we want flag atoms ! :D 150 declare -a new_CFLAGS new_CXXFLAGS
115 CFLAGS=" ${CFLAGS} " 151
116 CXXFLAGS=" ${CXXFLAGS} " 152 for fset in CFLAGS CXXFLAGS; do
117 CFLAGS="${CFLAGS// ${1} / ${2} }" 153 # Looping over the flags instead of using a global
118 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 154 # substitution ensures that we're working with flag atoms.
119 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 155 # Otherwise globs like -O* have the potential to wipe out the
120 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 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
121 return 0 165 return 0
122} 166}
123 167
124replace-cpu-flags() { 168replace-cpu-flags() {
125 local newcpu="$1" ; shift 169 local newcpu="$#" ; newcpu="${!newcpu}"
126 local oldcpu="" 170 while [ $# -gt 1 ] ; do
127 for oldcpu in "$@" ; do 171 # quote to make sure that no globbing is done (particularly on
172 # ${oldcpu} prior to calling replace-flags
128 replace-flags -march=${oldcpu} -march=${newcpu} 173 replace-flags "-march=${1}" "-march=${newcpu}"
129 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 174 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
130 replace-flags -mtune=${oldcpu} -mtune=${newcpu} 175 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
176 shift
131 done 177 done
132 return 0 178 return 0
133} 179}
134 180
135is-flag() { 181is-flag() {
182 local x
183
136 for x in ${CFLAGS} ${CXXFLAGS} ; do 184 for x in ${CFLAGS} ${CXXFLAGS} ; do
185 # Note this should work with globs like -mcpu=ultrasparc*
137 if [ "${x}" == "$1" ] ; then 186 if [[ ${x} == ${1} ]]; then
138 echo true 187 echo true
139 return 0 188 return 0
140 fi 189 fi
141 done 190 done
142 return 1 191 return 1
143} 192}
144 193
145filter-mfpmath() { 194filter-mfpmath() {
195 local orig_mfpmath new_math prune_math
196
146 # save the original -mfpmath flag 197 # save the original -mfpmath flag
147 local orig_mfpmath="`get-flag -mfpmath`" 198 orig_mfpmath="`get-flag -mfpmath`"
148 # get the value of the current -mfpmath flag 199 # get the value of the current -mfpmath flag
149 local new_math=" `get-flag mfpmath | tr , ' '` " 200 new_math=" `get-flag mfpmath | tr , ' '` "
150 # figure out which math values are to be removed 201 # figure out which math values are to be removed
151 local prune_math="" 202 prune_math=""
152 for prune_math in "$@" ; do 203 for prune_math in "$@" ; do
153 new_math="${new_math/ ${prune_math} / }" 204 new_math="${new_math/ ${prune_math} / }"
154 done 205 done
155 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 206 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
156 207
165 fi 216 fi
166 return 0 217 return 0
167} 218}
168 219
169strip-flags() { 220strip-flags() {
221 local x y flag NEW_CFLAGS NEW_CXXFLAGS
222
170 setup-allowed-flags 223 setup-allowed-flags
171 224
172 local NEW_CFLAGS="" 225 local NEW_CFLAGS=""
173 local NEW_CXXFLAGS="" 226 local NEW_CXXFLAGS=""
174 227
175 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 228 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
176 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 229 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then
177 [ `use debug` ] && einfo "Enabling the use of some unstable flags" 230 use debug && einfo "Enabling the use of some unstable flags"
178 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 231 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
179 fi 232 fi
180 233
181 set -f 234 set -f # disable pathname expansion
182 235
183 for x in ${CFLAGS} 236 for x in ${CFLAGS}; do
184 do
185 for y in ${ALLOWED_FLAGS} 237 for y in ${ALLOWED_FLAGS}; do
186 do
187 flag=${x%%=*} 238 flag=${x%%=*}
188 if [ "${flag%%${y}}" = "" ] 239 if [ "${flag%%${y}}" = "" ] ; then
189 then
190 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 240 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
191 break 241 break
192 fi 242 fi
193 done 243 done
194 done 244 done
195 245
196 for x in ${CXXFLAGS} 246 for x in ${CXXFLAGS}; do
197 do
198 for y in ${ALLOWED_FLAGS} 247 for y in ${ALLOWED_FLAGS}; do
199 do
200 flag=${x%%=*} 248 flag=${x%%=*}
201 if [ "${flag%%${y}}" = "" ] 249 if [ "${flag%%${y}}" = "" ] ; then
202 then
203 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 250 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
204 break 251 break
205 fi 252 fi
206 done 253 done
207 done 254 done
212 fi 259 fi
213 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 260 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
214 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 261 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
215 fi 262 fi
216 263
217 set +f 264 set +f # re-enable pathname expansion
218
219 [ `use debug` ] \
220 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
221 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
222 265
223 export CFLAGS="${NEW_CFLAGS}" 266 export CFLAGS="${NEW_CFLAGS}"
224 export CXXFLAGS="${NEW_CXXFLAGS}" 267 export CXXFLAGS="${NEW_CXXFLAGS}"
225 return 0 268 return 0
226} 269}
227 270
228test_flag() { 271test_flag() {
229 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then 272 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
230 echo "$@" 273 printf "%s\n" "$*"
231 return 0 274 return 0
232 fi 275 fi
233 return 1 276 return 1
234} 277}
235 278
279test_version_info() {
280 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
281 return 0
282 else
283 return 1
284 fi
285}
286
236strip-unsupported-flags() { 287strip-unsupported-flags() {
288 local NEW_CFLAGS NEW_CXXFLAGS
289
237 for x in ${CFLAGS} ; do 290 for x in ${CFLAGS} ; do
238 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" 291 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
239 done 292 done
240 for x in ${CXXFLAGS} ; do 293 for x in ${CXXFLAGS} ; do
241 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" 294 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
242 done 295 done
243 296
244 export CFLAGS="${NEW_CFLAGS}" 297 export CFLAGS="${NEW_CFLAGS}"
245 export CXXFLAGS="${NEW_CXXFLAGS}" 298 export CXXFLAGS="${NEW_CXXFLAGS}"
246} 299}
247 300
248get-flag() { 301get-flag() {
302 local f findflag="$1"
303
249 # this code looks a little flaky but seems to work for 304 # this code looks a little flaky but seems to work for
250 # everything we want ... 305 # everything we want ...
251 # for example, if CFLAGS="-march=i686": 306 # for example, if CFLAGS="-march=i686":
252 # `get-flags -march` == "-march=i686" 307 # `get-flag -march` == "-march=i686"
253 # `get-flags march` == "i686" 308 # `get-flag march` == "i686"
254 local findflag="$1"
255 for f in ${CFLAGS} ${CXXFLAGS} ; do 309 for f in ${CFLAGS} ${CXXFLAGS} ; do
256 if [ "${f/${findflag}}" != "${f}" ] ; then 310 if [ "${f/${findflag}}" != "${f}" ] ; then
257 echo "${f/-${findflag}=}" 311 printf "%s\n" "${f/-${findflag}=}"
258 return 0 312 return 0
259 fi 313 fi
260 done 314 done
261 return 1 315 return 1
262} 316}
263 317
318has_hardened() {
319 test_version_info Hardened && return 0
320 # the specs file wont exist unless gcc has GCC_SPECS support
321 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
322 return 0
323 return 1
324}
325
326has_pic() {
327 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
328 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
329 test_version_info pie && return 0
330 return 1
331}
332
333has_pie() {
334 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
335 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
336 test_version_info pie && return 0
337 return 1
338}
339
340has_ssp() {
341 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
342 test_version_info ssp && return 0
343 return 1
344}
345
346has_m64() {
347 # this doesnt test if the flag is accepted, it tests if the flag
348 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
349 # please dont replace this function with test_flag in some future
350 # clean-up!
351 local temp="$(emktemp)"
352 echo "int main() { return(0); }" > ${temp}.c
353 MY_CC=$(tc-getCC)
354 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
355 local ret=$?
356 rm -f ${temp}.c
357 [ "$ret" != "1" ] && return 0
358 return 1
359}
360
361has_m32() {
362 # this doesnt test if the flag is accepted, it tests if the flag
363 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
364 # please dont replace this function with test_flag in some future
365 # clean-up!
366 local temp="$(emktemp)"
367 echo "int main() { return(0); }" > ${temp}.c
368 MY_CC=$(tc-getCC)
369 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
370 local ret=$?
371 rm -f ${temp}.c
372 [ "$ret" != "1" ] && return 0
373 return 1
374}
375
264replace-sparc64-flags() { 376replace-sparc64-flags() {
265 local SPARC64_CPUS="ultrasparc v9" 377 local SPARC64_CPUS="ultrasparc v9"
266 378
267 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 379 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
268 then
269 for x in ${SPARC64_CPUS} 380 for x in ${SPARC64_CPUS}; do
270 do
271 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 381 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
272 done 382 done
273 else 383 else
274 for x in ${SPARC64_CPUS} 384 for x in ${SPARC64_CPUS}; do
275 do
276 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 385 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
277 done 386 done
278 fi 387 fi
279 388
280 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 389 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
281 then
282 for x in ${SPARC64_CPUS} 390 for x in ${SPARC64_CPUS}; do
283 do
284 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 391 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
285 done 392 done
286 else 393 else
287 for x in ${SPARC64_CPUS} 394 for x in ${SPARC64_CPUS}; do
288 do
289 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 395 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
290 done 396 done
291 fi 397 fi
398
399 export CFLAGS CXXFLAGS
292} 400}
293 401
294append-ldflags() { 402append-ldflags() {
403 export LDFLAGS="${LDFLAGS} $*"
404 return 0
405}
406
407filter-ldflags() {
408 local x
409
410 # we do this fancy spacing stuff so as to not filter
411 # out part of a flag ... we want flag atoms ! :D
295 LDFLAGS="${LDFLAGS} $@" 412 LDFLAGS=" ${LDFLAGS} "
413 for x in "$@" ; do
414 LDFLAGS="${LDFLAGS// ${x} / }"
415 done
416 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
417 export LDFLAGS
296 return 0 418 return 0
297} 419}
298 420
299etexec-flags() { 421etexec-flags() {
300 has_version sys-devel/hardened-gcc 422 # if you're not using a hardened compiler you wont need this
301 if [ $? == 0 ] ; then 423 # PIC/no-pic kludge in the first place.
302 if [ "`is-flag -yet_exec`" != "true" ]; then 424 has_hardened || return 0
303 debug-print ">>> appending flags -yet_exec" 425 use amd64 && return 0
304 append-flags -yet_exec 426 use mips && return 0
305 append-ldflags -yet_exec 427
428 if has_pie || has_pic; then
429 [ -z "`is-flag -fno-pic`" ] &&
430 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
431 [ -z "`is-flag -nopie`" ] &&
432 export CFLAGS="${CFLAGS} `test_flag -nopie`"
306 fi 433 fi
307 fi 434 return 0
308} 435}
309 436
310fstack-flags() { 437fstack-flags() {
311 has_version sys-devel/hardened-gcc 438 if has_ssp; then
312 if [ $? == 0 ] ; then 439 [ -z "`is-flag -fno-stack-protector`" ] &&
313 if [ "`is-flag -yno_propolice`" != "true" ]; then 440 export CFLAGS="${CFLAGS} `test_flag -fno-stack-protector`"
314 debug-print ">>> appending flags -yno_propolice"
315 append-flags -yno_propolice
316 append-ldflags -yno_propolice
317 fi 441 fi
318 fi 442 return 0
319} 443}
444
445# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
446# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
447# fixes.
448#
449# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
450gcc2-flags() {
451 CFLAGS=${CFLAGS//pentium-mmx/i586}
452 CFLAGS=${CFLAGS//pentium[234]/i686}
453 CFLAGS=${CFLAGS//k6-[23]/k6}
454 CFLAGS=${CFLAGS//athlon-tbird/i686}
455 CFLAGS=${CFLAGS//athlon-4/i686}
456 CFLAGS=${CFLAGS//athlon-[xm]p/i686}
457 CFLAGS=${CFLAGS//athlon/i686}
458
459 CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
460 CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
461 CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
462 CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
463 CXXFLAGS=${CXXFLAGS//athlon-4/i686}
464 CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
465 CXXFLAGS=${CXXFLAGS//athlon/i686}
466
467 if [ "$ARCH" = alpha ]; then
468 CHOST=${CHOST/#alphaev6[78]/alphaev6}
469 CFLAGS=${CFLAGS//ev6[78]/ev6}
470 CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
471 fi
472
473 export CFLAGS CXXFLAGS
474}

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