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Revision 1.40 Revision 1.78
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 1.78 2004/12/22 21:18:35 eradicator 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="${ALLOWED_FLAGS} -m32 -m64" ;;
89 esac
90 fi
91 # allow a bunch of flags that negate features / control ABI
92 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
66 case "${ARCH}" in 93 case "${ARCH}" in
67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 94 x86|amd64|ia64) ALLOWED_FLAGS="${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="${ALLOWED_FLAGS} -fPIC" ;;
71 esac 95 esac
96 ALLOWED_FLAGS="${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 97
73 # C[XX]FLAGS that we are think is ok, but needs testing 98 # C[XX]FLAGS that we are think is ok, but needs testing
74 # NOTE: currently -Os have issues with gcc3 and K6* arch's 99 # NOTE: currently -Os have issues with gcc3 and K6* arch's
75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 100 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76 return 0 101 return 0
77} 102}
78 103
79filter-flags() { 104filter-flags() {
105 local x f fset
106 declare -a new_CFLAGS new_CXXFLAGS
107
80 for x in "$@" ; do 108 for x in "$@" ; do
81 case "${x}" in 109 case "${x}" in
82 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 110 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;;
83 -fstack-protector|-fstack-protector-all) fstack-flags;; 111 -fstack-protector|-fstack-protector-all) fstack-flags;;
84 *) ;;
85 esac 112 esac
86 done 113 done
87 114
88 # we do this fancy spacing stuff so as to not filter 115 for fset in CFLAGS CXXFLAGS; do
89 # out part of a flag ... we want flag atoms ! :D 116 # Looping over the flags instead of using a global
90 CFLAGS=" ${CFLAGS} " 117 # substitution ensures that we're working with flag atoms.
91 CXXFLAGS=" ${CXXFLAGS} " 118 # Otherwise globs like -O* have the potential to wipe out the
119 # list of flags.
120 for f in ${!fset}; do
92 for x in "$@" ; do 121 for x in "$@"; do
93 CFLAGS="${CFLAGS// ${x} / }" 122 # Note this should work with globs like -O*
94 CXXFLAGS="${CXXFLAGS// ${x} / }" 123 [[ ${f} == ${x} ]] && continue 2
124 done
125 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
95 done 126 done
96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 127 eval export ${fset}=\${new_${fset}\[*]}
97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 128 done
129
98 return 0 130 return 0
99} 131}
100 132
101filter-lfs-flags() { 133filter-lfs-flags() {
102 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 134 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
103} 135}
104 136
137append-lfs-flags() {
138 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
139}
140
105append-flags() { 141append-flags() {
106 export CFLAGS="${CFLAGS} $@" 142 export CFLAGS="${CFLAGS} $*"
107 export CXXFLAGS="${CXXFLAGS} $@" 143 export CXXFLAGS="${CXXFLAGS} $*"
108 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags 144 [ -n "`is-flag -fno-stack-protector`" -o \
145 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
109 return 0 146 return 0
110} 147}
111 148
112replace-flags() { 149replace-flags() {
113 # we do this fancy spacing stuff so as to not filter 150 local f fset
114 # out part of a flag ... we want flag atoms ! :D 151 declare -a new_CFLAGS new_CXXFLAGS
115 CFLAGS=" ${CFLAGS} " 152
116 CXXFLAGS=" ${CXXFLAGS} " 153 for fset in CFLAGS CXXFLAGS; do
117 CFLAGS="${CFLAGS// ${1} / ${2} }" 154 # Looping over the flags instead of using a global
118 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 155 # substitution ensures that we're working with flag atoms.
119 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 156 # Otherwise globs like -O* have the potential to wipe out the
120 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 157 # list of flags.
158 for f in ${!fset}; do
159 # Note this should work with globs like -O*
160 [[ ${f} == ${1} ]] && f=${2}
161 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
162 done
163 eval export ${fset}=\${new_${fset}\[*]}
164 done
165
121 return 0 166 return 0
122} 167}
123 168
124replace-cpu-flags() { 169replace-cpu-flags() {
125 local newcpu="$1" ; shift 170 local newcpu="$#" ; newcpu="${!newcpu}"
126 local oldcpu="" 171 while [ $# -gt 1 ] ; do
127 for oldcpu in "$@" ; do 172 # quote to make sure that no globbing is done (particularly on
173 # ${oldcpu} prior to calling replace-flags
128 replace-flags -march=${oldcpu} -march=${newcpu} 174 replace-flags "-march=${1}" "-march=${newcpu}"
129 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 175 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
130 replace-flags -mtune=${oldcpu} -mtune=${newcpu} 176 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
177 shift
131 done 178 done
132 return 0 179 return 0
133} 180}
134 181
135is-flag() { 182is-flag() {
183 local x
184
136 for x in ${CFLAGS} ${CXXFLAGS} ; do 185 for x in ${CFLAGS} ${CXXFLAGS} ; do
186 # Note this should work with globs like -mcpu=ultrasparc*
137 if [ "${x}" == "$1" ] ; then 187 if [[ ${x} == ${1} ]]; then
138 echo true 188 echo true
139 return 0 189 return 0
140 fi 190 fi
141 done 191 done
142 return 1 192 return 1
143} 193}
144 194
145filter-mfpmath() { 195filter-mfpmath() {
196 local orig_mfpmath new_math prune_math
197
146 # save the original -mfpmath flag 198 # save the original -mfpmath flag
147 local orig_mfpmath="`get-flag -mfpmath`" 199 orig_mfpmath="`get-flag -mfpmath`"
148 # get the value of the current -mfpmath flag 200 # get the value of the current -mfpmath flag
149 local new_math=" `get-flag mfpmath | tr , ' '` " 201 new_math=" `get-flag mfpmath | tr , ' '` "
150 # figure out which math values are to be removed 202 # figure out which math values are to be removed
151 local prune_math="" 203 prune_math=""
152 for prune_math in "$@" ; do 204 for prune_math in "$@" ; do
153 new_math="${new_math/ ${prune_math} / }" 205 new_math="${new_math/ ${prune_math} / }"
154 done 206 done
155 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 207 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
156 208
165 fi 217 fi
166 return 0 218 return 0
167} 219}
168 220
169strip-flags() { 221strip-flags() {
222 local x y flag NEW_CFLAGS NEW_CXXFLAGS
223
170 setup-allowed-flags 224 setup-allowed-flags
171 225
172 local NEW_CFLAGS="" 226 local NEW_CFLAGS=""
173 local NEW_CXXFLAGS="" 227 local NEW_CXXFLAGS=""
174 228
175 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 229 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
176 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 230 if has ~${ARCH} ${ACCEPT_KEYWORDS} ; then
177 [ `use debug` ] && einfo "Enabling the use of some unstable flags" 231 use debug && einfo "Enabling the use of some unstable flags"
178 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 232 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
179 fi 233 fi
180 234
181 set -f 235 set -f # disable pathname expansion
182 236
183 for x in ${CFLAGS} 237 for x in ${CFLAGS}; do
184 do
185 for y in ${ALLOWED_FLAGS} 238 for y in ${ALLOWED_FLAGS}; do
186 do
187 flag=${x%%=*} 239 flag=${x%%=*}
188 if [ "${flag%%${y}}" = "" ] 240 if [ "${flag%%${y}}" = "" ] ; then
189 then
190 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 241 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
191 break 242 break
192 fi 243 fi
193 done 244 done
194 done 245 done
195 246
196 for x in ${CXXFLAGS} 247 for x in ${CXXFLAGS}; do
197 do
198 for y in ${ALLOWED_FLAGS} 248 for y in ${ALLOWED_FLAGS}; do
199 do
200 flag=${x%%=*} 249 flag=${x%%=*}
201 if [ "${flag%%${y}}" = "" ] 250 if [ "${flag%%${y}}" = "" ] ; then
202 then
203 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 251 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
204 break 252 break
205 fi 253 fi
206 done 254 done
207 done 255 done
212 fi 260 fi
213 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 261 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
214 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 262 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
215 fi 263 fi
216 264
217 set +f 265 set +f # re-enable pathname expansion
218
219 [ `use debug` ] \
220 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
221 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
222 266
223 export CFLAGS="${NEW_CFLAGS}" 267 export CFLAGS="${NEW_CFLAGS}"
224 export CXXFLAGS="${NEW_CXXFLAGS}" 268 export CXXFLAGS="${NEW_CXXFLAGS}"
225 return 0 269 return 0
226} 270}
227 271
228test_flag() { 272test_flag() {
229 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then 273 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
230 echo "$@" 274 printf "%s\n" "$*"
231 return 0 275 return 0
232 fi 276 fi
233 return 1 277 return 1
234} 278}
235 279
280test_version_info() {
281 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
282 return 0
283 else
284 return 1
285 fi
286}
287
236strip-unsupported-flags() { 288strip-unsupported-flags() {
289 local NEW_CFLAGS NEW_CXXFLAGS
290
237 for x in ${CFLAGS} ; do 291 for x in ${CFLAGS} ; do
238 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" 292 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
239 done 293 done
240 for x in ${CXXFLAGS} ; do 294 for x in ${CXXFLAGS} ; do
241 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" 295 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
242 done 296 done
243 297
244 export CFLAGS="${NEW_CFLAGS}" 298 export CFLAGS="${NEW_CFLAGS}"
245 export CXXFLAGS="${NEW_CXXFLAGS}" 299 export CXXFLAGS="${NEW_CXXFLAGS}"
246} 300}
247 301
248get-flag() { 302get-flag() {
303 local f findflag="$1"
304
249 # this code looks a little flaky but seems to work for 305 # this code looks a little flaky but seems to work for
250 # everything we want ... 306 # everything we want ...
251 # for example, if CFLAGS="-march=i686": 307 # for example, if CFLAGS="-march=i686":
252 # `get-flags -march` == "-march=i686" 308 # `get-flag -march` == "-march=i686"
253 # `get-flags march` == "i686" 309 # `get-flag march` == "i686"
254 local findflag="$1"
255 for f in ${CFLAGS} ${CXXFLAGS} ; do 310 for f in ${CFLAGS} ${CXXFLAGS} ; do
256 if [ "${f/${findflag}}" != "${f}" ] ; then 311 if [ "${f/${findflag}}" != "${f}" ] ; then
257 echo "${f/-${findflag}=}" 312 printf "%s\n" "${f/-${findflag}=}"
258 return 0 313 return 0
259 fi 314 fi
260 done 315 done
261 return 1 316 return 1
262} 317}
263 318
319has_hardened() {
320 test_version_info Hardened && return 0
321 # the specs file wont exist unless gcc has GCC_SPECS support
322 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
323 return 0
324 return 1
325}
326
327has_pic() {
328 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
329 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
330 test_version_info pie && return 0
331 return 1
332}
333
334has_pie() {
335 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
336 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
337 test_version_info pie && return 0
338 return 1
339}
340
341has_ssp() {
342 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
343 test_version_info ssp && return 0
344 return 1
345}
346
347has_m64() {
348 # this doesnt test if the flag is accepted, it tests if the flag
349 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
350 # please dont replace this function with test_flag in some future
351 # clean-up!
352 local temp="$(emktemp)"
353 echo "int main() { return(0); }" > ${temp}.c
354 MY_CC=$(tc-getCC)
355 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
356 local ret=$?
357 rm -f ${temp}.c
358 [ "$ret" != "1" ] && return 0
359 return 1
360}
361
362has_m32() {
363 # this doesnt test if the flag is accepted, it tests if the flag
364 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
365 # please dont replace this function with test_flag in some future
366 # clean-up!
367 local temp="$(emktemp)"
368 echo "int main() { return(0); }" > ${temp}.c
369 MY_CC=$(tc-getCC)
370 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
371 local ret=$?
372 rm -f ${temp}.c
373 [ "$ret" != "1" ] && return 0
374 return 1
375}
376
264replace-sparc64-flags() { 377replace-sparc64-flags() {
265 local SPARC64_CPUS="ultrasparc v9" 378 local SPARC64_CPUS="ultrasparc v9"
266 379
267 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 380 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
268 then
269 for x in ${SPARC64_CPUS} 381 for x in ${SPARC64_CPUS}; do
270 do
271 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 382 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
272 done 383 done
273 else 384 else
274 for x in ${SPARC64_CPUS} 385 for x in ${SPARC64_CPUS}; do
275 do
276 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 386 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
277 done 387 done
278 fi 388 fi
279 389
280 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 390 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
281 then
282 for x in ${SPARC64_CPUS} 391 for x in ${SPARC64_CPUS}; do
283 do
284 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 392 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
285 done 393 done
286 else 394 else
287 for x in ${SPARC64_CPUS} 395 for x in ${SPARC64_CPUS}; do
288 do
289 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 396 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
290 done 397 done
291 fi 398 fi
399
400 export CFLAGS CXXFLAGS
292} 401}
293 402
294append-ldflags() { 403append-ldflags() {
404 export LDFLAGS="${LDFLAGS} $*"
405 return 0
406}
407
408filter-ldflags() {
409 local x
410
411 # we do this fancy spacing stuff so as to not filter
412 # out part of a flag ... we want flag atoms ! :D
295 LDFLAGS="${LDFLAGS} $@" 413 LDFLAGS=" ${LDFLAGS} "
414 for x in "$@" ; do
415 LDFLAGS="${LDFLAGS// ${x} / }"
416 done
417 LDFLAGS="${LDFLAGS:1:${#LDFLAGS}-2}"
418 export LDFLAGS
296 return 0 419 return 0
297} 420}
298 421
299etexec-flags() { 422etexec-flags() {
300 has_version sys-devel/hardened-gcc 423 # if you're not using a hardened compiler you wont need this
301 if [ $? == 0 ] ; then 424 # PIC/no-pic kludge in the first place.
302 if [ "`is-flag -yet_exec`" != "true" ]; then 425 has_hardened || return 0
303 debug-print ">>> appending flags -yet_exec" 426 use amd64 && return 0
304 append-flags -yet_exec 427 use mips && return 0
305 append-ldflags -yet_exec 428
429 if has_pie || has_pic; then
430 [ -z "`is-flag -fno-pic`" ] &&
431 export CFLAGS="${CFLAGS} `test_flag -fno-pic`"
432 [ -z "`is-flag -nopie`" ] &&
433 export CFLAGS="${CFLAGS} `test_flag -nopie`"
306 fi 434 fi
307 fi 435 return 0
308} 436}
309 437
310fstack-flags() { 438fstack-flags() {
311 has_version sys-devel/hardened-gcc 439 if has_ssp; then
312 if [ $? == 0 ] ; then 440 [ -z "`is-flag -fno-stack-protector`" ] &&
313 if [ "`is-flag -yno_propolice`" != "true" ]; then 441 export CFLAGS="${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 442 fi
318 fi 443 return 0
319} 444}
445
446# This is thanks to great work from Paul de Vrieze <gentoo-user@devrieze.net>,
447# bug #9016. Also thanks to Jukka Salmi <salmi@gmx.net> (bug #13907) for more
448# fixes.
449#
450# Export CFLAGS and CXXFLAGS that are compadible with gcc-2.95.3
451gcc2-flags() {
452 CFLAGS=${CFLAGS//pentium-mmx/i586}
453 CFLAGS=${CFLAGS//pentium[234]/i686}
454 CFLAGS=${CFLAGS//k6-[23]/k6}
455 CFLAGS=${CFLAGS//athlon-tbird/i686}
456 CFLAGS=${CFLAGS//athlon-4/i686}
457 CFLAGS=${CFLAGS//athlon-[xm]p/i686}
458 CFLAGS=${CFLAGS//athlon/i686}
459
460 CXXFLAGS=${CXXFLAGS//pentium-mmx/i586}
461 CXXFLAGS=${CXXFLAGS//pentium[234]/i686}
462 CXXFLAGS=${CXXFLAGS//k6-[23]/k6}
463 CXXFLAGS=${CXXFLAGS//athlon-tbird/i686}
464 CXXFLAGS=${CXXFLAGS//athlon-4/i686}
465 CXXFLAGS=${CXXFLAGS//athlon-[xm]p/i686}
466 CXXFLAGS=${CXXFLAGS//athlon/i686}
467
468 if [ "$ARCH" = alpha ]; then
469 CHOST=${CHOST/#alphaev6[78]/alphaev6}
470 CFLAGS=${CFLAGS//ev6[78]/ev6}
471 CXXFLAGS=${CXXFLAGS//ev6[78]/ev6}
472 fi
473
474 export CFLAGS CXXFLAGS
475}

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