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Revision 1.40 Revision 1.84
1# Copyright 1999-2003 Gentoo Technologies, Inc. 1# Copyright 1999-2005 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 1.84 2005/03/18 03:48:14 vapier Exp $
4#
5# Author Bart Verwilst <verwilst@gentoo.org>
6 4
7ECLASS=flag-o-matic 5ECLASS=flag-o-matic
8INHERITED="$INHERITED $ECLASS" 6INHERITED="$INHERITED $ECLASS"
7
8IUSE="debug"
9
10# need access to emktemp()
11inherit eutils toolchain-funcs multilib
9 12
10# 13#
11#### filter-flags <flags> #### 14#### filter-flags <flags> ####
12# Remove particular flags from C[XX]FLAGS 15# Remove particular flags from C[XX]FLAGS
13# Matches only complete flags 16# Matches only complete flags
16# Add extra flags to your current C[XX]FLAGS 19# Add extra flags to your current C[XX]FLAGS
17# 20#
18#### replace-flags <orig.flag> <new.flag> ### 21#### replace-flags <orig.flag> <new.flag> ###
19# Replace a flag by another one 22# Replace a flag by another one
20# 23#
21#### replace-cpu-flags <new.cpu> <old.cpus> ### 24#### replace-cpu-flags <old.cpus> <new.cpu> ###
22# Replace march/mcpu flags that specify <old.cpus> 25# Replace march/mcpu flags that specify <old.cpus>
23# with flags that specify <new.cpu> 26# with flags that specify <new.cpu>
24# 27#
25#### is-flag <flag> #### 28#### is-flag <flag> ####
26# Returns "true" if flag is set in C[XX]FLAGS 29# Returns "true" if flag is set in C[XX]FLAGS
47# will leave the user with -mfpmath=386 50# will leave the user with -mfpmath=386
48# 51#
49#### append-ldflags #### 52#### append-ldflags ####
50# Add extra flags to your current LDFLAGS 53# Add extra flags to your current LDFLAGS
51# 54#
52#### etexec-flags #### 55#### filter-ldflags <flags> ####
53# hooked function for hardened-gcc that appends 56# Remove particular flags from LDFLAGS
54# -yet_exec {C,CXX,LD}FLAGS when hardened-gcc is installed 57# Matches only complete flags
55# and a package is filtering -fPIC,-fpic, -fPIE, -fpie
56# 58#
57#### fstack-flags #### 59#### fstack-flags ####
58# hooked function for hardened-gcc that appends 60# hooked function for hardened gcc that appends
59# -yno_propolice to {C,CXX,LD}FLAGS when hardened-gcc is installed 61# -fno-stack-protector to {C,CXX,LD}FLAGS
60# and a package is filtering -fstack-protector, -fstack-protector-all 62# when a package is filtering -fstack-protector, -fstack-protector-all
63# notice: modern automatic specs files will also suppress -fstack-protector-all
64# when only -fno-stack-protector is given
61# 65#
62 66
63# C[XX]FLAGS that we allow in strip-flags 67# C[XX]FLAGS that we allow in strip-flags
64setup-allowed-flags() { 68setup-allowed-flags() {
65 export ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g" 69 if [[ -z ${ALLOWED_FLAGS} ]] ; then
66 case "${ARCH}" in 70 export ALLOWED_FLAGS="-pipe"
71 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -O -O0 -O1 -O2 -mcpu -march -mtune"
72 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fstack-protector -fno-stack-protector"
73 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-pie -fno-unit-at-a-time"
74 export ALLOWED_FLAGS="${ALLOWED_FLAGS} -g -g0 -g1 -g2 -g3 -ggdb -ggdb0 -ggdb1 -ggdb2 -ggdb3"
75 case $(tc-arch) in
67 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;; 76 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mips32 -mips64 -mips16 -EL -EB -mabi" ;;
68 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 77 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC -m64" ;;
78 x86) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32" ;;
69 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 79 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
70 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;; 80 ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
81 sparc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -m32 -m64" ;;
82 ppc) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mabi" ;;
83 esac
84 fi
85 # allow a bunch of flags that negate features / control ABI
86 ALLOWED_FLAGS="${ALLOWED_FLAGS} -fno-stack-protector -fno-stack-protector-all"
87 case $(tc-arch) in
88 x86|amd64|ia64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow" ;;
71 esac 89 esac
90 ALLOWED_FLAGS="${ALLOWED_FLAGS} -mregparm -mno-app-regs -mapp-regs -msoft-float -mflat -mno-faster-structs -mfaster-structs -mlittle-endian -mbig-endian -mlive-g0 -mcmodel -mno-stack-bias -mstack-bias"
72 91
73 # C[XX]FLAGS that we are think is ok, but needs testing 92 # C[XX]FLAGS that we are think is ok, but needs testing
74 # NOTE: currently -Os have issues with gcc3 and K6* arch's 93 # NOTE: currently -Os have issues with gcc3 and K6* arch's
75 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays" 94 export UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
76 return 0 95 return 0
77} 96}
78 97
79filter-flags() { 98filter-flags() {
99 local x f fset
100 declare -a new_CFLAGS new_CXXFLAGS
101
80 for x in "$@" ; do 102 for x in "$@" ; do
81 case "${x}" in 103 case "${x}" in
82 -fPIC|-fpic|-fPIE|-fpie|-pie) etexec-flags;; 104 -fPIC|-fpic|-fPIE|-fpie|-pie)
105 append-flags `test_flag -fno-pie`;;
83 -fstack-protector|-fstack-protector-all) fstack-flags;; 106 -fstack-protector|-fstack-protector-all)
84 *) ;; 107 fstack-flags;;
85 esac 108 esac
86 done 109 done
87 110
88 # we do this fancy spacing stuff so as to not filter 111 for fset in CFLAGS CXXFLAGS; do
89 # out part of a flag ... we want flag atoms ! :D 112 # Looping over the flags instead of using a global
90 CFLAGS=" ${CFLAGS} " 113 # substitution ensures that we're working with flag atoms.
91 CXXFLAGS=" ${CXXFLAGS} " 114 # Otherwise globs like -O* have the potential to wipe out the
115 # list of flags.
116 for f in ${!fset}; do
92 for x in "$@" ; do 117 for x in "$@"; do
93 CFLAGS="${CFLAGS// ${x} / }" 118 # Note this should work with globs like -O*
94 CXXFLAGS="${CXXFLAGS// ${x} / }" 119 [[ ${f} == ${x} ]] && continue 2
120 done
121 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
95 done 122 done
96 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 123 eval export ${fset}=\${new_${fset}\[*]}
97 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 124 done
125
98 return 0 126 return 0
99} 127}
100 128
101filter-lfs-flags() { 129filter-lfs-flags() {
102 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 130 filter-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
103} 131}
104 132
133append-lfs-flags() {
134 append-flags -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
135}
136
105append-flags() { 137append-flags() {
138 [[ -z $* ]] && return 0
106 export CFLAGS="${CFLAGS} $@" 139 export CFLAGS="${CFLAGS} $*"
107 export CXXFLAGS="${CXXFLAGS} $@" 140 export CXXFLAGS="${CXXFLAGS} $*"
108 [ "`is-flag -fno-stack-protector`" -o "`is-flag -fno-stack-protector-all`" ] && fstack-flags 141 [ -n "`is-flag -fno-stack-protector`" -o \
142 -n "`is-flag -fno-stack-protector-all`" ] && fstack-flags
109 return 0 143 return 0
110} 144}
111 145
112replace-flags() { 146replace-flags() {
113 # we do this fancy spacing stuff so as to not filter 147 local f fset
114 # out part of a flag ... we want flag atoms ! :D 148 declare -a new_CFLAGS new_CXXFLAGS
115 CFLAGS=" ${CFLAGS} " 149
116 CXXFLAGS=" ${CXXFLAGS} " 150 for fset in CFLAGS CXXFLAGS; do
117 CFLAGS="${CFLAGS// ${1} / ${2} }" 151 # Looping over the flags instead of using a global
118 CXXFLAGS="${CXXFLAGS// ${1} / ${2} }" 152 # substitution ensures that we're working with flag atoms.
119 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}" 153 # Otherwise globs like -O* have the potential to wipe out the
120 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}" 154 # list of flags.
155 for f in ${!fset}; do
156 # Note this should work with globs like -O*
157 [[ ${f} == ${1} ]] && f=${2}
158 eval new_${fset}\[\${\#new_${fset}\[@]}]=\${f}
159 done
160 eval export ${fset}=\${new_${fset}\[*]}
161 done
162
121 return 0 163 return 0
122} 164}
123 165
124replace-cpu-flags() { 166replace-cpu-flags() {
125 local newcpu="$1" ; shift 167 local newcpu="$#" ; newcpu="${!newcpu}"
126 local oldcpu="" 168 while [ $# -gt 1 ] ; do
127 for oldcpu in "$@" ; do 169 # quote to make sure that no globbing is done (particularly on
170 # ${oldcpu} prior to calling replace-flags
128 replace-flags -march=${oldcpu} -march=${newcpu} 171 replace-flags "-march=${1}" "-march=${newcpu}"
129 replace-flags -mcpu=${oldcpu} -mcpu=${newcpu} 172 replace-flags "-mcpu=${1}" "-mcpu=${newcpu}"
130 replace-flags -mtune=${oldcpu} -mtune=${newcpu} 173 replace-flags "-mtune=${1}" "-mtune=${newcpu}"
174 shift
131 done 175 done
132 return 0 176 return 0
133} 177}
134 178
135is-flag() { 179is-flag() {
180 local x
181
136 for x in ${CFLAGS} ${CXXFLAGS} ; do 182 for x in ${CFLAGS} ${CXXFLAGS} ; do
183 # Note this should work with globs like -mcpu=ultrasparc*
137 if [ "${x}" == "$1" ] ; then 184 if [[ ${x} == ${1} ]]; then
138 echo true 185 echo true
139 return 0 186 return 0
140 fi 187 fi
141 done 188 done
142 return 1 189 return 1
143} 190}
144 191
145filter-mfpmath() { 192filter-mfpmath() {
193 local orig_mfpmath new_math prune_math
194
146 # save the original -mfpmath flag 195 # save the original -mfpmath flag
147 local orig_mfpmath="`get-flag -mfpmath`" 196 orig_mfpmath="`get-flag -mfpmath`"
148 # get the value of the current -mfpmath flag 197 # get the value of the current -mfpmath flag
149 local new_math=" `get-flag mfpmath | tr , ' '` " 198 new_math=" `get-flag mfpmath | tr , ' '` "
150 # figure out which math values are to be removed 199 # figure out which math values are to be removed
151 local prune_math="" 200 prune_math=""
152 for prune_math in "$@" ; do 201 for prune_math in "$@" ; do
153 new_math="${new_math/ ${prune_math} / }" 202 new_math="${new_math/ ${prune_math} / }"
154 done 203 done
155 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`" 204 new_math="`echo ${new_math:1:${#new_math}-2} | tr ' ' ,`"
156 205
165 fi 214 fi
166 return 0 215 return 0
167} 216}
168 217
169strip-flags() { 218strip-flags() {
219 local x y flag NEW_CFLAGS NEW_CXXFLAGS
220
170 setup-allowed-flags 221 setup-allowed-flags
171 222
172 local NEW_CFLAGS="" 223 local NEW_CFLAGS=""
173 local NEW_CXXFLAGS="" 224 local NEW_CXXFLAGS=""
174 225
175 # Allow unstable C[XX]FLAGS if we are using unstable profile ... 226 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
176 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then 227 if has ~$(tc-arch) ${ACCEPT_KEYWORDS} ; then
177 [ `use debug` ] && einfo "Enabling the use of some unstable flags" 228 use debug && einfo "Enabling the use of some unstable flags"
178 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}" 229 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
179 fi 230 fi
180 231
181 set -f 232 set -f # disable pathname expansion
182 233
183 for x in ${CFLAGS} 234 for x in ${CFLAGS}; do
184 do
185 for y in ${ALLOWED_FLAGS} 235 for y in ${ALLOWED_FLAGS}; do
186 do
187 flag=${x%%=*} 236 flag=${x%%=*}
188 if [ "${flag%%${y}}" = "" ] 237 if [ "${flag%%${y}}" = "" ] ; then
189 then
190 NEW_CFLAGS="${NEW_CFLAGS} ${x}" 238 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
191 break 239 break
192 fi 240 fi
193 done 241 done
194 done 242 done
195 243
196 for x in ${CXXFLAGS} 244 for x in ${CXXFLAGS}; do
197 do
198 for y in ${ALLOWED_FLAGS} 245 for y in ${ALLOWED_FLAGS}; do
199 do
200 flag=${x%%=*} 246 flag=${x%%=*}
201 if [ "${flag%%${y}}" = "" ] 247 if [ "${flag%%${y}}" = "" ] ; then
202 then
203 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}" 248 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
204 break 249 break
205 fi 250 fi
206 done 251 done
207 done 252 done
212 fi 257 fi
213 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then 258 if [ "${CXXFLAGS/-O}" != "${CXXFLAGS}" -a "${NEW_CXXFLAGS/-O}" = "${NEW_CXXFLAGS}" ]; then
214 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2" 259 NEW_CXXFLAGS="${NEW_CXXFLAGS} -O2"
215 fi 260 fi
216 261
217 set +f 262 set +f # re-enable pathname expansion
218
219 [ `use debug` ] \
220 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
221 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
222 263
223 export CFLAGS="${NEW_CFLAGS}" 264 export CFLAGS="${NEW_CFLAGS}"
224 export CXXFLAGS="${NEW_CXXFLAGS}" 265 export CXXFLAGS="${NEW_CXXFLAGS}"
225 return 0 266 return 0
226} 267}
227 268
228test_flag() { 269test_flag() {
229 if gcc -S -xc "$@" -o /dev/null /dev/null >/dev/null 2>&1; then 270 if $(tc-getCC) -S -xc "$@" -o "$(emktemp)" /dev/null &>/dev/null; then
230 echo "$@" 271 printf "%s\n" "$*"
231 return 0 272 return 0
232 fi 273 fi
233 return 1 274 return 1
234} 275}
235 276
277test_version_info() {
278 if [[ $($(tc-getCC) --version 2>&1) == *$1* ]]; then
279 return 0
280 else
281 return 1
282 fi
283}
284
236strip-unsupported-flags() { 285strip-unsupported-flags() {
286 local NEW_CFLAGS NEW_CXXFLAGS
287
237 for x in ${CFLAGS} ; do 288 for x in ${CFLAGS} ; do
238 NEW_CFLAGS=${NEW_CFLAGS}" ""`test_flag ${x}`" 289 NEW_CFLAGS="${NEW_CFLAGS} `test_flag ${x}`"
239 done 290 done
240 for x in ${CXXFLAGS} ; do 291 for x in ${CXXFLAGS} ; do
241 NEW_CXXFLAGS=${NEW_CXXFLAGS}" ""`test_flag ${x}`" 292 NEW_CXXFLAGS="${NEW_CXXFLAGS} `test_flag ${x}`"
242 done 293 done
243 294
244 export CFLAGS="${NEW_CFLAGS}" 295 export CFLAGS="${NEW_CFLAGS}"
245 export CXXFLAGS="${NEW_CXXFLAGS}" 296 export CXXFLAGS="${NEW_CXXFLAGS}"
246} 297}
247 298
248get-flag() { 299get-flag() {
300 local f findflag="$1"
301
249 # this code looks a little flaky but seems to work for 302 # this code looks a little flaky but seems to work for
250 # everything we want ... 303 # everything we want ...
251 # for example, if CFLAGS="-march=i686": 304 # for example, if CFLAGS="-march=i686":
252 # `get-flags -march` == "-march=i686" 305 # `get-flag -march` == "-march=i686"
253 # `get-flags march` == "i686" 306 # `get-flag march` == "i686"
254 local findflag="$1"
255 for f in ${CFLAGS} ${CXXFLAGS} ; do 307 for f in ${CFLAGS} ${CXXFLAGS} ; do
256 if [ "${f/${findflag}}" != "${f}" ] ; then 308 if [ "${f/${findflag}}" != "${f}" ] ; then
257 echo "${f/-${findflag}=}" 309 printf "%s\n" "${f/-${findflag}=}"
258 return 0 310 return 0
259 fi 311 fi
260 done 312 done
261 return 1 313 return 1
262} 314}
263 315
316has_hardened() {
317 test_version_info Hardened && return 0
318 # the specs file wont exist unless gcc has GCC_SPECS support
319 [ -f "${GCC_SPECS}" -a "${GCC_SPECS}" != "${GCC_SPECS/hardened/}" ] && \
320 return 0
321 return 1
322}
323
324# indicate whether PIC is set
325has_pic() {
326 [ "${CFLAGS/-fPIC}" != "${CFLAGS}" ] && return 0
327 [ "${CFLAGS/-fpic}" != "${CFLAGS}" ] && return 0
328 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
329 test_version_info pie && return 0
330 return 1
331}
332
333# indicate whether PIE is set
334has_pie() {
335 [ "${CFLAGS/-fPIE}" != "${CFLAGS}" ] && return 0
336 [ "${CFLAGS/-fpie}" != "${CFLAGS}" ] && return 0
337 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIE__)" ] && return 0
338 # test PIC while waiting for specs to be updated to generate __PIE__
339 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __PIC__)" ] && return 0
340 return 1
341}
342
343# indicate whether code for SSP is being generated
344has_ssp() {
345 # note; this matches both -fstack-protector and -fstack-protector-all
346 [ "${CFLAGS/-fstack-protector}" != "${CFLAGS}" ] && return 0
347 [ "$(echo | $(tc-getCC) ${CFLAGS} -E -dM - | grep __SSP__)" ] && return 0
348 return 1
349}
350
351has_m64() {
352 # this doesnt test if the flag is accepted, it tests if the flag
353 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
354 # please dont replace this function with test_flag in some future
355 # clean-up!
356 local temp="$(emktemp)"
357 echo "int main() { return(0); }" > ${temp}.c
358 MY_CC=$(tc-getCC)
359 ${MY_CC/ .*/} -m64 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
360 local ret=$?
361 rm -f ${temp}.c
362 [ "$ret" != "1" ] && return 0
363 return 1
364}
365
366has_m32() {
367 # this doesnt test if the flag is accepted, it tests if the flag
368 # actually -WORKS-. non-multilib gcc will take both -m32 and -m64!
369 # please dont replace this function with test_flag in some future
370 # clean-up!
371
372 [ "$(tc-arch)" = "amd64" ] && has_multilib_profile && return 0
373
374 local temp="$(emktemp)"
375 echo "int main() { return(0); }" > ${temp}.c
376 MY_CC=$(tc-getCC)
377 ${MY_CC/ .*/} -m32 -o "$(emktemp)" ${temp}.c > /dev/null 2>&1
378 local ret=$?
379 rm -f ${temp}.c
380 [ "$ret" != "1" ] && return 0
381 return 1
382}
383
264replace-sparc64-flags() { 384replace-sparc64-flags() {
265 local SPARC64_CPUS="ultrasparc v9" 385 local SPARC64_CPUS="ultrasparc v9"
266 386
267 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ] 387 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]; then
268 then
269 for x in ${SPARC64_CPUS} 388 for x in ${SPARC64_CPUS}; do
270 do
271 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}" 389 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
272 done 390 done
273 else 391 else
274 for x in ${SPARC64_CPUS} 392 for x in ${SPARC64_CPUS}; do
275 do
276 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 393 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
277 done 394 done
278 fi 395 fi
279 396
280 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ] 397 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]; then
281 then
282 for x in ${SPARC64_CPUS} 398 for x in ${SPARC64_CPUS}; do
283 do
284 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}" 399 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
285 done 400 done
286 else 401 else
287 for x in ${SPARC64_CPUS} 402 for x in ${SPARC64_CPUS}; do
288 do
289 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}" 403 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
290 done 404 done
291 fi 405 fi
406
407 export CFLAGS CXXFLAGS
292} 408}
293 409
294append-ldflags() { 410append-ldflags() {
411 export LDFLAGS="${LDFLAGS} $*"
412 return 0
413}
414
415filter-ldflags() {
416 local x
417
418 # we do this fancy spacing stuff so as to not filter
419 # out part of a flag ... we want flag atoms ! :D
295 LDFLAGS="${LDFLAGS} $@" 420 LDFLAGS=" ${LDFLAGS} "
421 for x in "$@" ; do
422 LDFLAGS=${LDFLAGS// ${x} / }
423 done
424 [[ -z ${LDFLAGS// } ]] \
425 && LDFLAGS="" \
426 || LDFLAGS=${LDFLAGS:1:${#LDFLAGS}-2}
427 export LDFLAGS
296 return 0 428 return 0
297}
298
299etexec-flags() {
300 has_version sys-devel/hardened-gcc
301 if [ $? == 0 ] ; then
302 if [ "`is-flag -yet_exec`" != "true" ]; then
303 debug-print ">>> appending flags -yet_exec"
304 append-flags -yet_exec
305 append-ldflags -yet_exec
306 fi
307 fi
308} 429}
309 430
310fstack-flags() { 431fstack-flags() {
311 has_version sys-devel/hardened-gcc 432 if has_ssp; then
312 if [ $? == 0 ] ; then 433 [ -z "`is-flag -fno-stack-protector`" ] &&
313 if [ "`is-flag -yno_propolice`" != "true" ]; then 434 export CFLAGS="${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 435 fi
318 fi 436 return 0
319} 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 [[ $(tc-arch) == "alpha" ]] ; then
462 CHOST=${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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